bluuebunny/crossref_metadata_2025 huggingface dataset:
PERIODICITIES IN THE INFLUENCES OF AIR IONS ON THE GROWTH OF GARDEN CRESS, LEPIDIUM SATIVUM L.
Authors: Maw M. G.
Published: March 2010

When garden cress was exposed to either positive or negative air ions there was a net increase in the rate of growth, and an apparent periodicity, coincident with lunar phases, in the growth differences between the ion-treated and the control plants. A mechanism is suggested whereby lunar and other geophysical factors influence plant growth and other biotic phenomena.
THE EFFECT OF TWO HERBICIDES, BROMOXYNIL AND DICAMBA, ON THE TRANSPIRATION OF TARTARY BUCKWHEAT AND BARLEY
Authors: Friesen H. A. , Dew D. A.
Published: March 2010

Tartary buckwheat, Fagopyrum tataricum (L.) Gaertn., sprayed with a quick- and a slow-acting herbicide continued to transpire water until the plants were dead. The quick-acting contact herbicide bromoxynil, 3,5-dibromo-4-hydroxy benzonitrile, reduced transpiration by 50% within one day and by over 80% within two days afer spraying. The systemic herbicide dicamba, 2-methoxy-3,6 dichlorobenzoic acid, did not reduce transpiration to near this level until 10 days after spraying. These transpiration differences due to the differential herbicide activity were highly significant. When buckwheat and barley were grown together and harvested 11 days after spraying, removal of the weed with these herbicides resulted in significantly heavier barley seedlings with more tillers per plant than in the untreated check. The differences in barley dry weight and culms per plant between the bromoxynil and dicamba treatments were not significant at this early growth stage. However, when harvested at the fully headed stage, the earlier removal of the buckwheat competition with the bromoxynil treatment resulted in the production of more dry weight of barley and heads per plant than with the slower acting dicamba.
SUSCEPTIBILITY OF COMMON AND DURUM SPRING WHEATS TO BARLEY YELLOW DWARF VIRUS
Authors: Gill C. C.
Published: March 2010

Nine varieties of common wheat (Triticum aestivum L.) and four varieties of durum wheat (T. durum Desf.) were inoculated with three isolates of barley yellow dwarf virus (BYDV) in the greenhouse. All varieties proved susceptible to BYDV, and yields were severely reduced. Yellow discoloration and chlorosis of leaves was slight in most varieties inoculated with the two stronger isolates, though stunting, delay in heading and a reduction in the number of tillers were apparent. In the most susceptible varieties, the rate of growth suffered a marked temporary decrease during the early shock phase of infection.Manitou, one of the varieties of common wheat tested in the greenhouse, was also inoculated with one of the virus isolates in a field plot. The yield from plants inoculated at the three-leaf stage was 64% less than that from uninfected plants. There was a reduction of 40% in yield from plants inoculated when each plant had four to five tillers and the average height was 20.3 cm. Stunting and reduction in the number of tillers and size of heads were apparent in mature plants inoculated at the three-leaf stage. The only symptom on plants inoculated when tillers had developed was a slight yellowing of the leaf tips, first noticeable about 18 days after inoculation.
EFFECT OF A WHEAT COMPANION CROP ON THE SEED YIELD OF RUSSIAN WILD RYEGRASS
Authors: Lawrence T.
Published: March 2010

The influence of a wheat companion crop on the establishment and subsequent seed and dry matter yields of Elymus junceus Fisch. was studied in tests seeded annually from 1959 to 1963. Russian wild ryegrass was seeded in rows spaced 91.4 cm (3 feet) apart and the wheat companion crop was seeded in various spacings parallel with the grass rows and crosswise to them.The companion crop did not affect the establishment of the grass, but it did decrease the vigor of the grass plants as was reflected in lower seed yields in the first two crop years. The higher the plant density of the companion crop, the greater the depression on seedling vigor and production of the grass crop, and the higher the yield of wheat.The production of wheat in the seedling year averaged 969 kg/ha, and in no case compensated for the decreased yield of the grass-seed crop in subsequent years.
SELECTION FOR COOKING QUALITY IN FIELD PEAS
Authors: Gfeller F. , Halstead R. L.
Published: March 2010

In a cross of Weitor 702 (a good cooking pea) and Kapuskasing 3880-4 (a poor cooking pea), grown from the F2 to F5 generations in the field, it was found that cooking quality was weakly related to the Ca/phytin-P ratio and to the phytin-P content of the pea. The desirable cooking quality of the Weitor parent was retained to the F0 generation when selection was made from single F2 plants. The data suggest, however, that selection for good cooking quality may be more efficient if started in the F4 generation. The inheritance of good cooking quality appeared to be controlled by two recessive genes, although there was some indication of a gene–environmental interaction.
ACCELERATION OF BEAN LEAF ABSCISSION BY 2,4-DICHLOROPHENOXYACETIC ACID APPLIED IN DIMETHYLSULFOXIDE
Authors: Mussell Harry W. , Morre′ D. James , Green Jr. Ralph J.
Published: March 2010

Rapid abscission of leaves from 18- to 22-day-old bean plants was induced by 2,4-dichlorophenoxyacetic acid applied in dimethylsulfoxide. The time between treatment and the onset of abscission was 12 hours; 50% defoliation was achieved in less than 120 hours. The effectiveness of the auxin was increased fourfold by application in dimethylsulfoxide when compared with application in water at identical rates.
THE CONFINEMENT PERIOD REQUIRED TO RID HONEYBEES OF FOREIGN SWEETCLOVER POLLEN
Authors: Pankiw P. , Goplen B. P.
Published: March 2010

An investigation was carried out with sweetclover to determine how long honeybees must be confined or isolated before they were free of contaminating pollen. The honeybees rid themselves of all contaminant pollen within 2 days. Hence, honeybees can be used for intermittent pollination of sweetclover in the greenhouse or growth chamber if they are kept in confinement, or forage an unrelated species, for 2 days.
INFLUENCE OF WATER ON WILD RICE (ZIZANIA AQUATICA L.) GROWN IN A PRAIRIE SOIL
Authors: Weber R. P. , Simpson G. M.
Published: March 2010

In a controlled environment, growth of wild rice in a flooded prairie sandy loam appeared normal. Plant size and dry matter at water levels below soil saturation was inferior to that in saturated or flooded sandy loam. Water levels below 10.4 cm of standing water above soil surface decreased the number of plants with floating leaves. Moisture level also affected the emergence of seedlings and type of root development.
IMPROVEMENT OF SOUTHEASTERN ALBERTA RANGE WITH FERTILIZERS
Authors: Johnston A. , Smoliak S. , Smith A. D. , Lutwick L. E.
Published: March 2010

Mixed Prairie vegetation in fair condition was fertilized with various rates of P, N, and NP. Rates of application by an increasing-rate spreader were: low, 10–185 kg/ha N, 10–155 kg/ha P; medium, 375–705 kg/ha N, 300–550 kg/ha P; and high, 870–1095 kg/ha N, and 680–820 kg/ha P. Total yield increased as a result of all fertilizer treatments. Palatability of fertilized vegetation was increased. Character of vegetation, unchanged by low rates, was changed by medium and high rates of N and NP. Bouteloua gracilis (HBK.) Lag., Stipa comata Trin. and Rupr., Koeleria cristata (L.) Pers., and Selaginella densa Rydb. decreased; Agropyron smithii Rydb., A. dasystachyum (Hook.) Scribn., and Artemisia frigida Willd. increased; and fertilized plots were invaded by Descurainia sophia (L.) Webb, Chenopodium leptophyllum Nutt., and Hordeum jubatum L. Fertilizer application increased rangeland production by about 300% at low rates and about 900% at high rates; the latter were accompanied by major vegetation changes. Since long-term effects of vegetation changes are unknown, only low rates of fertilizer application, which had little effect on the vegetation, can be recommended.
MASS SELECTION FOR RESISTANCE TO SELENOPHOMA BROMIGENA IN NORTHERN AND SOUTHERN TYPES OF BROMUS INERMIS
Authors: Smith J. Drew , Knowles R. P.
Published: March 2010

In the epidemic years 1965 and 1966, field ratings confirmed that southern strains of smooth bromegrass, Bromus inermis Leyss, were generally less susceptible to leaf spot caused by Selenophoma bromigena (Sacc.) Sprague & A. G. Johnson than northern strains. The northern/southern hybrid S-6733, developed by mass selection and progeny testing, was found to resist S. bromigena at least as well as the southern strains Lincoln and Redpatch, and better than the southern Saratoga. It was found possible to improve resistance of the susceptible northern strain Carlton by mass selection. Northern strains probably do not have as great a potential for improvement in disease resistance as southern strains or hybrids.
VIRUS ETIOLOGY OF FOLIAR VEIN-FLECKING OR RING PATTERN, AND FRUIT RUSSETING OR BLOTCH ON APPLE
Authors: Welsh Maurice F. , May James
Published: March 2010

Virus isolates were obtained from trees of seven apple varieties, each affected with vein-flecking or ring patterns on the foliage, or ring-russeted, pitted or blotched fruits, or various combinations of these symptoms. When bud-inoculated to seven test varieties of apple, these isolates all differed from one another in the symptoms induced. This is interpreted as evidence that the isolates contained distinct viruses, virus strains or virus composites. All isolates affected varieties other than those in which they had occurred. Symptoms induced on the leaves of test varieties included vein flecking, minute ring patterns, coarse ring and line patterns, and vein-associated coarse blotching; those on the fruit included tenuous, single russet rings, tenuous or coarse ring russet networks, coarse, raised ring russeting, shallow pitting and dimpling. Two isolates induced bark or wood symptoms on test varieties.
INFLUENCE OF DAYLENGTH ON AUXIN PRODUCTION IN FLOWER BUDS OF THE LOWBUSH BLUEBERRY
Authors: Collins W. B. , Irving K. H.
Published: March 2010

not available
CABOT OATS
Authors: Sterling J. D. E. , MacLaken R. B.
Published: March 2010

not available
FIELD CONTROL OF LOOSE SMUT IN BARLEY WITH THE SYSTEMIC FUNGICIDES VITAVAX AND PLANTVAX
Authors: Reinbergs E. , Edgington L. V. , Metcalfe D. R. , Bendelow V. M.
Published: March 2010

Vitavax (2,3-dihydro-5-carboxanilido-6-methyl-1,4-oxathiin) applied as a seed treatment at a rate of 113 g per 45.4 kg of barley seed gave complete control of loose smut under field conditions. The seed treatment increased yield significantly in Parkland where smut in untreated plots was 49%. In York, with 16% smut in plants grown from untreated seed, yield increases were not significant. A higher dosage (227 g) also controlled smut but appeared to cause some toxicity. Seed treatment had no apparent effect on the malting quality of the seed subsequently harvested.Plantvax (2,3-dihydro-5-carboxanilido-6-methyl-1,4-oxathiin-4,4 dioxide) applied as a soil treatment at the rates of 5.6 kg/ha and 11.2 kg/ha also resulted in effective loose smut control in York barley but did not result in increased yield. There were indications that yield was depressed at the higher rate in York and at both rates in the variety Herta.There were also indications that treatments with either chemical had a slight effect on height, date of maturity, weight per hectoliter and 1,000-kernel weight. Seed treatment at planting time did not prevent infection of barley florets by loose smut spores 55 to 60 days after planting.
NITRATE ACCUMULATION IN INTERMEDIATE WHEATGRASS
Authors: Lawrence T. , Warder F. G. , Ashford R.
Published: March 2010

The effects of six rates of N fertilizer and five frequencies of clipping on the nitrate content of forage from intermediate wheatgrass, Agropyron intermedium (Host.) Beauv., were studied throughout the 1965 growing season.The nitrate content of the forage increased with increasing rates of N fertilizer, and varied with date of harvest. Toxic levels of nitrates (> 2,000 ppm) were found during the period June 5 to July 17 in samples harvested from grass which had been fertilized with 300 and 375 kg/ha of N fertilizer in the spring. Toxic levels were not found in samples from grass fertilized at lower rates. There was an interaction between frequency of clipping and fertilizer rates. At low fertilizer rates the nitrate content of the forage increased as the frequency of clipping was increased, but at the 375-kg/ha rate of fertilizer the opposite was true.It is suggested that fertilizer rates’ in excess of 225 kg/ha N (200 lb/ac N) may result in toxic levels of nitrate in intermediate wheatgrass.
A NEW FLAVONOID IN ALFALFA
Authors: Bradner N. K. , Brink V. C.
Published: March 2010

not available
EFFECT OF ALAR ON WINTERHARDINESS OF RASPBERRIES
Authors: Granger R. L. , Hogue E. J.
Published: March 2010

not available
AURORA ALSIKE CLOVER
Authors: Elliott C. R.
Published: March 2010

not available
BOREAL CREEPING RED FESCUE
Authors: Elliott C. R.
Published: March 2010

not available
FRASER OATS
Authors: Taylor D. K.
Published: March 2010

not available
POLLINATION BAGS FOR INDIVIDUAL FLORETS OF BRASSICA
Authors: Kondra Z. P. , Downey R. K.
Published: March 2010

not available
EVALUATION OF REGROWTH POTENTIAL OF PERENNIAL FORAGE CROPS USING TRIPHENYLTETRAZOLIUM CHLORIDE
Authors: Suzuki M.
Published: March 2010

not available
A SURVEY OF WEED LEAF STOMATA AND TRICHOMES
Authors: Ormrod David J. , Renney A. J.
Published: March 2010

Thirty-five species of weeds were grown in a field nursery in order to obtain data on the number, size, and distribution of their stomata. Mature leaves were cleared, stained, and mounted for microscopic examination.The mean numbers of stomata per mm2 of leaf surface ranged from 2.3 to 315.2. The mean lengths of the guard cells varied from 21.6 to 57.0 μ. Twenty species had significantly more stomata/mm2 on the lower than on the upper surface. Only three species had significantly more on the upper surface. Between species, there was negative correlation of stomatal number with guard cell length, but between surfaces within species the lengths remained fairly constant despite differences in numbers. Plants grown in partial shade had slightly more stomata/mm2 than those grown in full sun. The same was true of leaves sampled in July compared with those sampled in June. In neither case could the differences be attributed solely to environmental factors.A series of drawings was made depicting the different stomatal characteristics and types of trichomes. It was estimated that the leaves of nine species had enough pubescence to influence retention or penetration of sprays.
WARM VS. COOL SHORT DAYS AS PRECONDITIONS FOR FLOWERING OF PELARGONIUM DOMESTICUM CULTIVARS
Authors: Crossley J. H.
Published: March 2010

not available
EARLIGOLD MUSKMELON
Authors: Kemp G. A.
Published: March 2010

not available
UNE POULIE VARIABLE POUR REGLER LA LONGUEUR DU SEMIS DES PARCELLES DE CEREALES
Authors: St-Pierre C. A.
Published: March 2010

On a motorized cereal seeder, a double variable-speed pulley has given the opportunity to seed with precision plots of any length between 1.70 m and 12.75 m.
EFFICACY OF TRANSMISSION OF FIRE BLIGHT RESISTANCE IN PYRUS
Authors: Layne R. E. C. , Bailey Catherine H. , Hough L. F.
Published: March 2010

An efficient, reproducible seedling-screening procedure was devised that gave almost 100% infection yet differential levels of resistance to Erwinia amylovora. Seedling segregation for resistance to fire blight was studied for 48 separate progenies with segregation data based on 7,462 seedlings. Sources of high, intermediate or low resistance derived from P. ussuriensis, P. serotina or P. communis were compared for ability to transmit resistance to their offspring. P. communis selections that were most efficient in transmitting resistance to their progeny included: Magness, Purdue 80-51, Maxine and Mich. US 437. Similarly, the most efficient sources in the P. ussuriensis group included: Purdue 77-73, NJ 484338262 and NJ 487601174; and the most efficient in the P. serotina group included: Purdue 110-9 and Kieffer. The breeding value of the most efficient P. communis sources was considered to be superior to the other two species sources in view of the larger size and higher quality of fruit associated with P. communis.Continuous distributions rather than discontinuous segregation were obtained with most progenies, regardless of species source or level of resistance. Some distributions were similar to those associated with quantitative inheritance, others were more representative of qualitative inheritance, with dominance of resistance in each case. No consistent type of segregation distribution characterized progenies having a common species source of resistance.
INFLUENCE OF SOIL pH AND HUMIDITY ON SURVIVAL OF CEPHALOSPORIUM GRAMINEUM IN INFESTED WHEAT STRAW
Authors: Bruehl G. W. , Lai P.
Published: March 2010

Cephalosporium gramineum survived in and sporulated most profusely on wheat straws in soil at pH 3.9 to 5.5. Strongly acid (pH 3.3) and alkaline soil (pH 7.6 or greater) reduced survival. The sporodochial stage (Hymenula cerealis) formed at pH values between 3.9 and 8.4, but most abundantly at pH 4.8 to 5.1. While acidity favored both saprophytic survival and sporulation, the pH’s of most wheat lands of Washington are within the pH range favorable for the pathogen.Saprophytic colonization of straw by Trichoderma spp. was favored by acidity (greatest at pH 3.3 to 3.9), and colonization by saprophytic Fusarium spp. by alkalinity (greatest at pH 8.2 to 8.8).Air-dried soil was brought to various relative humidities (RH) over glycerine and water solutions. Cephalosporium gramineum survived best in straw in contact with soil at the lowest RH tested (ca. 82%) and least well at an RH near 90%. Survival was reduced in soils with relative humidities between 90 and 86%, water levels below those of soil at the permanent wilting point for higher plants. Such humidities exist in surface layers of summerfallow and crop lands during portions of the summer in Washington.Penicillium brevi-compactum and P. steckii were the main colonists of the straws at RH values of 95% or lower.
ASSOCIATION BETWEEN GRAIN YIELD PER PLANT AND PHOTOSYNTHETIC AREA ABOVE THE FLAG-LEAF NODE IN WHEAT
Authors: Simpson G. M.
Published: March 2010

The hypothesis that yield of grain per plant is proportional to the photosynthetic area above the flag-leaf node was tested on 120 varieties of wheat under greenhouse conditions. High, positive correlation coefficients were obtained between grain weight and the components of photosynthetic area above the flag-leaf node, both on a per tiller and per plant basis.
PARATHION, A SELECTIVE RUST FUNGICIDE, COMPARED WITH MANEB IN THE CONTROL OF CEREAL RUSTS
Authors: Fleischmann G. , Martens J. W. , McKenzie R. I. H.
Published: March 2010

Parathion, an organophosphorus insecticide, controlled oat crown rust, Puccinia coronata Corda f. sp. avenae Erikss., in the greenhouse at a concentration of 0.32 g/liter when applied to oats before inoculation with rust urediospores. Slight reductions in the amount of oat stem rust, P. graminis Pers. f. sp. avenae Erikss. and Henn., wheat stem rust, P. graminis Pers. f. sp. tritici Erikss. and Henn., and wheat leaf rust, P. recondita Rob. ex. Desm., were achieved at higher concentrations. In field tests, three applications of parathion gave excellent control of oat crown rust. Late infections of oat stem rust, which caused significant yield reductions, were unaffected by parathion, but were effectively controlled by maneb.
INFLUENCE OF SOIL MOISTURE STRESS APPLIED AT VARIOUS STAGES OF GROWTH ON THE YIELD COMPONENTS OF CHINOOK WHEAT
Authors: Campbell C. A.
Published: March 2010

Two series of moisture treatments were used to determine if there was a specific growth stage at which low soil moisture stress caused poor seed set in Chinook wheat, and also to determine whether grain yield could be maximized by manipulating time of increasing or decreasing moisture stress.Maintaining soil moisture at 25 to 10% (dry) until the shot-blade stage produced 80% seed set, compared with only 30% seed set when moisture was maintained at 25% to 16% (wet) during the same period. Increasing or decreasing the soil moisture stress at different growth stages had little effect on the number of florets per head or the mean kernel weight. Under the conditions of this experiment, the number of heads and percent seed set were the main components influencing grain yield. The highest grain yields were obtained when plants were grown under dry conditions until late shot-blade and under wet conditions thereafter. Conversely, minimum grain yields were realized where plants were grown under wet conditions until late shot-blade and under dry conditions thereafter. Straw yield was closely related to the total moisture used.
FRUIT SET AND BERRY DEVELOPMENT OF LOWBUSH BLUEBERRY AS AFFECTED BY TEMPERATURE
Authors: Hall I. V. , Aalders L. E.
Published: March 2010

not available
EFFECTIVENESS OF THE SYSTEMIC INSECTICIDE OXYDEMETONMETHYL APPLIED IN LIQUID FERTILIZER FOR GREEN PEACH APHID CONTROL ON CHRYSANTHEMUM
Authors: Tonks N. V.
Published: March 2010

not available
CHANGES IN ASCORBIC ACID CONTENT OF MOSAMBI FRUIT INDUCED BY BOTRYODIPLODIA THEOBROMAE
Authors: Srivastava M. P. , Tandon R. N.
Published: March 2010

not available
PARAGON, A NEW VARIETY OF MALTING BARLEY
Authors: Johnston W. H.
Published: March 2010

not available
THE OTTAWA SINGLE-ROW CEREAL HARVESTER FOR EXPERIMENTAL PLOTS
Authors: Kemp J. G. , Hergert G. B.
Published: March 2010

not available
COUMAPHOS AS A BIRD REPELLENT IN GRAIN PLOTS
Authors: Austenson H. M.
Published: March 2010

not available
EFFECT OF TEMPERATURE ON NET CARBON DIOXIDE EXCHANGE RATES OF TWELVE BARLEY VARIETIES
Authors: Ormrod D. P. , Hubbard W. F. , Faris D. G.
Published: March 2010

Seedlings of 12 barley varieties were grown in a controlled environment to 21 days of age and then transferred to an apparatus for measuring net carbon dioxide exchange rates. Rates were measured at temperatures ranging from 4 to 34 °C and the results were plotted to provide a response curve for each variety. The response curves were not clearly different between varieties, but some trends were evident. The varieties Husky, Parkland and Vantmore had response curves of similar shape with marked increases with increasing temperature to 14 to 18 °C. Asa, Olli and Pirkka showed a more gradual rise to about 20 °C. Varieties O.A.C. 21, Vantage and Wolfe showed a very rapid increase in carbon dioxide uptake to about 6 °C followed by very little change to 20 °C, leading into a gradual decline. Stavropol, Trebi and White Gatami had maximum rates at a higher temperature. The patterns presented by the varieties may be related to different areas of origin and production. Varieties were markedly different at low temperatures but differed little in response to temperatures near 34 °C. Absolute rates of net carbon dioxide exchange differed markedly among varieties.
USE OF SIMAZINE AS A PREVENTATIVE WEED CONTROL HERBICIDE FOR BIRDSFOOT TREFOIL
Authors: Winch J. E. , Anderson G. W. , Jones G. E.
Published: March 2010

Simazine at 0.8, 1.1, 1.6 and 2.2 kg/ha (active) was applied in October of each of three years to an established stand of Empire birdsfoot trefoil infested with grass. These rates were used alone and with an original application of each of 1.1 kg/ha paraquat and a mixture of 3.4 kg/ha dalapon + 1.1 kg/ha 2,4-DB (active). In addition, 1.1 kg/ha simazine (active) was applied in October to a new sowing of Empire birdsfoot trefoil. This rate was used alone and where each of 4.5 kg/ha dalapon, 1.1 kg/ha 2,4-DB or their mixture had been applied at the third true leaf stage of trefoil development earlier in the establishment year. The purpose of these trials was to determine the effect of simazine on the yield of birdsfoot trefoil and on the control of grass and broadleaf weeds. Simazine at 0.8, and 1.1 kg/ha applied in the fall of each year had no deleterious effects upon the yield of Empire trefoil. At the 1.6- and 2.2-kg/ha rate, a reduction in yield did occur after the second, but did not occur after the third, annual application of simazine.Although the grass proportion in old stands of trefoil was reduced to 10% or less by initial application of 1.1, 1.6 and 2.2 kg/ha of simazine, an increase up to the 30% level occurred after the second application at the 1.1- and 1.6-kg/ha rates. This grass proportion was maintained by a further application at these rates. Only the 2.2-kg/ha rate of simazine maintained the grass proportion below 10% of the yield. The original reduction in the proportion of grass was improved and subsequently maintained at a level of 25% or below where simazine was used at any rate in conjunction with an initial application of a mixture of dalapon and 2,4-DB. Combination of paraquat and simazine resulted in a trefoil stand reduction and low trefoil yields.A preventative weed control system using simazine is discussed. The program involves the initial use of a mixture of 3.4 kg dalapon and 1.1 kg 2,4-DB per hectare on new seedlings or on established stands. This is followed by an annual October application of 0.8 to 1.1 kg/ha (active) simazine.
EVIDENCE OF INCOMPATIBILITY BETWEEN A HERBICIDE AND INSECTICIDES IN DIRECT-SEEDED CABBAGE
Authors: Freeman Jack A. , Finlayson D. G.
Published: March 2010

not available
CROTCH ANGLE DEVELOPMENT IN PEACH TREES AS INFLUENCED BY SCION AND ROOTSTOCK CULTIVARS
Authors: Weaver G. M.
Published: March 2010

not available
MINERAL CONTENT OF FRUIT AND LEAVES OF SPARTAN APPLE TREES TREATED WITH SUCCINIC ACID 2,2-DIMETHYL HYDRAZIDE
Authors: Ashby D. L. , Looney N. E.
Published: March 2010

not available
EFFECT OF DITHIOCARBAMATE AND OXATHIIN FUNGICIDES ON THE YIELD OF OATS IN THE ABSENCE OF FOLIAR DISEASES
Authors: Martens J. W. , Fleischmann G. , McKenzie R. I. H. , Piening L.
Published: March 2010

not available
SELF-FERTILITY IN THE LOWBUSH BLUEBERRY
Authors: Wood G. W.
Published: March 2010

not available
SIX NEW HARDY CHRYSANTHEMUM CULTIVARS
Authors: Kemp G. A.
Published: March 2010

not available
EFFECT OF NITROGEN, PHOSPHORUS, POTASSIUM, AND MANURE ON TERMINAL, LATERAL, AND TOTAL YIELDS AND MATURITY OF BROCCOLI
Authors: Cutcliffe J. A. , Munro D. C. , MacKay D. C.
Published: March 2010

A factorial experiment was conducted during three successive cropping seasons to investigate the effects of nitrogen, phosphorus, potassium, and manure on the yield and maturity of broccoli (Brassica oleracea L. var. italica Plenck.). Terminal (central inflorescence), lateral (axillary stalk), and total yields were substantially increased by applications of nitrogen and phosphorus. For maximum yields, rates of 175 to 250 kg/ha of N and 100 to 150 kg/ha of P were necessary. Increases in lateral yields and total yields from high rates of nitrogen were obtained only when nitrogen was accompanied by adequate phosphorus. Yields of terminals were increased in only one of three seasons by added potassium. A manure treatment increased lateral and total yields in two seasons, and terminal yields in one season. Maturity was delayed by increasing the rates of nitrogen, and where no phosphorus was applied.
RESPONSE OF RED CLOVER TO KIMBERLEY ELECTRIC FURNACE IRON SL4G AND OTHER LIMING MATERIALS
Authors: Beaton J. D. , Speer R. C. , Harapiak J. T.
Published: March 2010

Yields, together with K, Ca and Mg concentrations and uptake, were determined for 10 consecutive harvests of red clover in growth-chamber experiments comparing electric furnace iron slag with commercially available agricultural lime, marl and dolomite, as well as reagent-grade magnesium carbonate, as liming materials at two rates of application on the acid Alouette silt loam and Pitt silty clay soils.On the Alouette silt loam, slag was the most effective treatment in increasing yield, while on the Pitt silty clay soil, slag was not significantly better than dolomite, marl or agricultural lime. Magnesium carbonate was the least effective liming treatment in increasing yield on both soils.All liming agents except magnesium carbonate increased Ca uptake. With the exception of dolomite on the Pitt soil and magnesium carbonate on both soils, Ca concentration in red clover tissue was increased by the liming materials.Content of Mg in red clover tissue was increased by slag, dolomite and magnesium carbonate on the Alouette soil and by the latter two sources on Pitt soil. Marl reduced Mg concentration in red clover harvested from Alouette soil, and both agricultural lime and marl decreased Mg in tissue from the Pitt soil. On the Alouette soil, all liming materials except marl and agricultural lime resulted in significant increases in uptake of Mg, while all liming treatments increased Mg uptake from the Pitt soil.Concentration of K in red clover was reduced by liming, whereas K uptake was increased by all liming agents.
INHERITANCE OF THATCHER-TYPE RESISTANCE TO COMMON ROOT ROT IN SPRING WHEAT
Authors: McKenzie Hugh , Atkinson T. G.
Published: March 2010

Inheritance of reaction to common root rot, caused chiefly by Cochliobolus sativus, was studied in F3 populations of wheat, Triticum aestivum, from crosses between the root-rot-resistant, hollow-stemmed varieties, Thatcher and Pembina, and the moderately root-rot-susceptible, solid-stemmed variety, CT 733. The results indicated that the resistance of Thatcher and Pembina, which appear to have the same gene complement, is controlled by a major recessive gene and one or two minor genes.No association was found between inheritance of root-rot reaction and the inheritance of stem solidness which determines resistance to the wheat stem sawfly (Cephus cinctus). Therefore, there should be no difficulty in incorporating root-rot resistance into sawfly-resistant varieties.
EFFECT OF DOLOMITIC LIMESTONE TREATMENTS ON YIELD, QUALITY AND CATION CONTENT OF FLUE-CURED TOBACCO
Authors: LeLacheur K. E. , MacKay D. C.
Published: March 2010

The addition of dolomitic limestone at 0.56, 1.12, 1.68, 2.24 and 2.80 metric tons/ha to three Orthic Podzol soil series improved the value per plot and quality of Virginia-type flue-cured tobacco. Applications above 5.04 metric tons/ha reduced dollar value per plot and above 3.36 metric tons dolomitic limestone/ha reduced quality. Calcium, magnesium and potassium content varied with seasons and locations during the three-year test period, but increasing rates of dolomitic limestone generally increased magnesium percentages and reduced calcium and potassium percentages in cured leaf tissue. Ca/Mg ratios ranging from 3.2:1 to 2.2:1 and K/Ca + Mg ratios from 0.63:1 to 1.02:1 were found to be associated with highest yield and quality.
INCIDENCE OF INJURY TO CORN BY RHOPALOSIPHUM PADI
Authors: Foott W. H. , Timmins P. R.
Published: March 2010

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A TRANSPARENT ROOT-OBSERVATION CELL
Authors: Estey R. H.
Published: March 2010

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LATENT EVAPORATION—A MEASURE OF HAY DRYING RATES
Authors: Kemp J. G. , Roach W. S.
Published: March 2010

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RELATIONSHIP BETWEEN BRONZING IN WHITE BEANS AND PHYTOTOXIC LEVELS OF ATMOSPHERIC OZONE IN ONTARIO
Authors: Weaver G. M. , Jackson H. O.
Published: March 2010

Concentrations of ozone as high as 9 pphm (parts per hundred million) have been detected during mid-August in association with the incidence of the "bronzing" disorder of white beans (Phaseolus vulgaris) in southwestern Ontario. The disorder is characterized by the sudden appearance of a bronze-colored necrotic stipple of pods and the upper surface of the leaf, followed by chlorosis and abscission of both leaves and pods. Comparable symptoms were induced by treatment of bean plants with ozone at concentrations as low as 8 pphm for six hours, thereby implicating airborne oxidants as the probable cause of bronzing in white beans.
CHEAM STRAWBERRY
Authors: Daubeny Hugh A.
Published: March 2010

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A COMPARATOR FOR COLOR GRADING OF PROCESSING TOMATOES
Authors: Denby L. G.
Published: March 2010

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YIELD OF DRY MATTER AND NITROGEN FROM TOPS AND ROOTS OF SWEETCLOVER, ALFALFA AND RED CLOVER AT FIVE STAGES OF GROWTH
Authors: Bowren K. E. , Cooke D. A. , Downey R. K.
Published: March 2010

Sweetclover (Melilotus officinalis L.), alfalfa (Medicago sativa L.), and red clover (Trifolium pratense L.) were grown to determine their value for returning nitrogen to the soil at two locations in northeastern Saskatchewan from 1956 to 1960. Yields of dry matter and nitrogen in the top growth and in the roots were determined for each crop at rive stages of growth. The legumes were seeded m association with a fertilized and an unfertilized companion crop of wheat (Triticum aestivum L.).Sweetclover produced the greatest yield of top growth at all harvest dates. The root weights of alfalfa and red clover had surpassed those of sweetclover by July 15 (full-bloom stage) and September 15 (mature-seed stage), respectively. Percent nitrogen in the top growth of the legumes ranged from 1.87 to 2.61% on September 15 of the first year and from 2.58 to 2.89% by June 15 of the second year. After June 15, a sharp decline in percent nitrogen of the top growth occurred, especially in sweetclover. Percent nitrogen of the root growth of sweetclover also declined rapidly after June 15, while that of alfalfa and red clover increased.If sweetclover, alfalfa or red clover were used for green manure in late June or early July of the second year, a return of 70 to 90, 60 to 95 and 50 to 75 kg N/ha, respectively, would have occurred. If a crop of hay or silage was removed and only the stubble used for green manure, the average nitrogen returns to the soil from sweetclover, alfalfa and red clover would have been 10, 20, and 15 kg N/ha, respectively.Fertilizer increased the yield of the companion crop and reduced the yield of the legumes.
LA SEMENCE INFECTEE, SOURCE D’INOCULUM DE LA TACHE ARGENTEE DANS LES SOLS AFFECTES A LA CULTURE DES POMMES DE TERRE
Authors: Santerre Jacquelin
Published: March 2010

This study was carried out during three years on St. Pacôme loamy sand and on organic soil defined as a well-decomposed muck with shoots of healthy seed-potatoes and shoots of tubers infected with silver scurf. The disease-free shoots yielded very few infected potato tubers compared with infected shoots which yielded a high percentage of infected tubers. Results obtained on the loamy sand indicate that growing potatoes in the same field during several years does not induce the development of Helminthosporium atrovirens in the soil to the extent of becoming an important source of infection. Infected potato debris left over in the field from the preceding crops are a negligible source of inoculum compared with infected seed-potatoes which are considered the main source of infection.
DEPTH OF MIGRATION OF MELOIDOGYNE INCOGNITA (NEMATODEA) ASSOCIATED WITH GREENHOUSE TOMATO AND CUCUMBER ROOTS
Authors: Bird G. W.
Published: March 2010

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STIMULATION OF RHIZOME AND SHOOT GROWTH OF THE LOWBUSH BLUEBERRY BY 2-CHLOROETHANEPHOSPHONIC ACID
Authors: Kender W. J. , Hall I. V. , Aalders L. E. , Forsyth F. R.
Published: March 2010

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HYBRID RUGOSA ROSE ’MARTIN FROBISHER’
Authors: Svejda Felicitas
Published: March 2010

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MICROSCOPE TROLLEY FOR RHIZOTRON
Authors: Bhar D. S. , Mason G. F. , Hilton R. J.
Published: March 2010

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INFLUENCE OF AIR TEMPERATURE, LIGHT INTENSITY, SOIL MOISTURE STRESS AND SOIL AERATION ON MOISTURE USE BY WHEAT
Authors: Campbell C. A. , Ferguson W. S.
Published: March 2010

In growth chamber experiments, it was found that total and rate of moisture use by wheat were directly proportional to light intensity, except under conditions which restricted growth.Increasing the day temperature from 21° to 27 °C reduced the total moisture use. This was attributed to the greater vegetative dry matter produced at 21 °C. Under high soil moisture stress, (0.2 to 15 atm), plants used less water at a slower rate than at the lower stress (0.2 to 1.4 atm), but the moisture treatment had little effect on moisture use per gram of dry matter Apparently, under the conditions of this experiment the most important cause of reduced transpiration at high moisture stress was reduced plant growth.At about the late tillering to stem-extension stage, wheat was surprisingly insensitive to changes in moisture stress. An increase in soil moisture stress during this period did not result in the usual reduced rate of moisture consumption.Irrespective of the growth stage at which the stress was changed (increased or decreased), stress had little influence on moisture use per unit of straw dry matter. If the soil was "wet" (0.2 to 1.4 atm) at about the stem-extension stage, poor seed set occurred and thus moisture use per gram of seed was increased. When plants were provided with adequate aeration, moisture use per gram of seed was one-third that of plants grown under poor aeration.
EFFECT OF CULTIVATION AND NITROGEN ON FRUIT QUALITY, YIELD AND COLOR OF McINTOSH APPLES GROWN IN IRRIGATED GRASS SOD COVER CROP
Authors: Mason J. L.
Published: March 2010

Nitrogen treatments from 0.15 to 0.90 kg of nitrogen and cultivation treatments from zero to three shallow rotovations were applied in a split-plot design to 30-year-old McIntosh apple trees growing in irrigated grass sod.Fruit quality was very largely unaffected by the treatments. Pressure test after harvest was reduced from 6.61 to 6.44 kg (P = 0.10) as nitrogen increased. Number of rots increased from 2.7 to 3.9 per 60-fruit sample with increasing nitrogen. Titratable acidity and soluble solids after harvest and pressure test, titratable acidity, soluble solids, stem-cavity browning and core flush in tests after storage were all unchanged. In addition, none of these tests were affected by cultivation except pressure test, which decreased with more cultivation (P = 0.10).Yield was not changed by either the nitrogen or the cultivation treatments, and terminal length increased only slightly with more cultivation. However, nitrogen concentration in the leaf was increased from 1.90 to 1.98% by the nitrogen treatments and from 1.83 to 1.98% by increasing cultivation. Extra Fancy grade was reduced and C grade increased by increasing nitrogen (P = 0.10), but cultivation had no effect.The conclusion is drawn that grass sod can very largely eliminate the effect of widely different nitrogen fertilization levels on McIntosh apple, and that moderate cultivation changes this effect only slightly. In many mature orchards of high initial fertility, nitrogen fertilizer may be required in only small amounts or even not at all for optimum fruit color.
AGRONOMIC SIGNIFICANCE OF SUPERNUMERARY CHROMOSOMES IN CONTROLLED-CROSS PROGENIES AND EXPERIMENTAL SYNTHETICS OF CRESTED WHEATGRASS
Authors: Baenziger H. , Knowles R. P.
Published: March 2010

Effects of supernumerary chromosomes on various agronomic traits were studied in controlled-cross progenies and in 12 experimental synthetics. Controlled-cross progenies indicated average reductions of 5.9% in forage yield, 13.5% in seed yield, and 12.7% in floret fertility due to supernumerary chromosomes. Significant negative relationships between mean numbers of supernumeraries and forage yield (r = − 0.49) and seed yield (r = − 0.80) were observed in experimental synthetics.
THE REACTION OF SWEETCLOVER VARIETIES TO BROWN ROOT ROT
Authors: Berkenkamp B. , Baenziger H.
Published: March 2010

Several varieties of Melilotus alba and M. officinalis were evaluated in the spring of 4 years for their resistance to Plenodomus meliloti. Survival and yield were a reflection of resistance which was related to lesioning of roots and formation of pycnidia. Survival was correlated with lesioning of roots (r = − 0.73) and pycnidial formation (r = − 0.67). There was evidence that the reaction of a variety could vary depending on the geographic origin of the seed. A new host, Lotus corniculatus, is reported.
EFFECTS OF SAMPLE PREPARATION METHODS ON THE ISOFLAVONES OF RED CLOVER
Authors: Dedio W. , Clark K. W.
Published: March 2010

Isoflavone levels in red clover samples, which were oven-dried at temperatures below 80 °C or frozen, did not differ from fresh clover samples. Quantitative estimation of isoflavones can be made on dry red clover samples provided they are first moistened to hydrolyze the isoflavone glycosides. Partial hydrolysis of glycosides resulted from drying at high temperatures or from freezing treatments.
SEEDLING VIGOR STUDIES IN MORSHANSK BIRDSFOOT TREFOIL
Authors: Twamley B. E.
Published: March 2010

Progenies of 60 birdsfoot trefoil plants out of the Russian strain Morshansk which differed in maturity, seed load, and seed size were evaluated for speed of germination, seedling vigor, and rate of tillering.The results indicated that, first, seed load is unlikely to affect greatly the seed size and seedling vigor of the progeny; secondly, late-maturing strains with good seedling vigor can be found; thirdly, in a population of progeny lines, 80% of the lines may be discarded on the basis of seed size without serious danger of discarding much good seedling vigor germplasm; fourthly, plants arising from large seeds had a pronounced tendency to tiller early; and, fifthly, speed of germination may be of considerable value in detecting lines with good seedling vigor in an unselected population, but is of limited value for that purpose within the large-seeded fraction of the population.
HERITABILITY AND INTERRELATIONSHIPS OF SOME AGRONOMIC CHARACTERS IN GRAIN SORGHUM
Authors: Ali-Khan S. T. , Weibel D. K.
Published: March 2010

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ABSORPTION OF MAGNESIUM BY APPLE LEAVES FOLLOWING APPLICATION IN DILUTE AND CONCENTRATE SPRAYS
Authors: Webster D. H. , Crowe A. D.
Published: March 2010

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MATSQUI RED RASPBERRY
Authors: Daubeny Hugh A.
Published: March 2010

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HARBELLE PEACH
Authors: Weaver G. M. , Stroud F. D.
Published: March 2010

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AN INEXPENSIVE SPACE-INTEGRATING LIGHT METER FOR FIELD CROP RESEARCH
Authors: Daynard T. B. , Hunter R. B. , Tanner J. W. , Kannenberg L. W.
Published: March 2010

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AIR-BORNE POLLEN SURVEYS IN EASTERN CANADA
Authors: Bassett I. J. , Crompton C. W.
Published: March 2010

Practically no air-borne pollen was collected until the first of May at any of the seven sites established in eastern Quebec and the Atlantic Provinces. Trees and shrubs such as the alders, birches, pines and spruces produced the greater part of the pollen from May to June. Peak grass pollen periods occurred at most of the stations in the latter part of June and July. Ragweed pollen was collected only m small amounts at all the sites except Ste. Anne de la Pocatière, Quebec. Pollen from other plants known to cause hay fever were recorded in very small amounts. Pollen grains from poplars, birches, pines, spruces, balsam far, hemlocks, juinpers and ragweeds were collected on Sable Island, approximately 175 miles east of Halifax, yet none of these plants is known to grow on the island.
SUPPRESSION OF ROTS ON FOUR VARIETIES OF MATURE GREEN TOMATOES IN CONTROLLED ATMOSPHERE STORAGE
Authors: Lockhart C. L. , Eaves C. A. , Chipman E. W.
Published: March 2010

Tomatoes stored in a controlled atmosphere at 11 °C for 4 to 8 weeks then ripened for 7 days in air at 22 °C during two successive seasons had less rots, better flavor and were firmer than controls stored in air. The varieties Longred and Viscount were better suited for controlled atmosphere storage than Harrow and K65 (an unnamed seedling).
INFLUENCE OF ROW SPACING ON YIELD AND CREEPING ROOT DEVELOPMENT OF RAMBLER ALFALFA IN A SEMIARID REGION
Authors: Kilcher M. R. , Heinrichs D. H.
Published: March 2010

The creeping-rooted alfalfa (Medicago media Pers.) cultivar Rambler was grown in stands for 5–6 years and in rows varying from 30 to 120 cm apart on loam soil at Swift Current, Saskatchewan. This is a semiarid location in the Canadian prairie region.On the average, highest yields were obtained from stands of alfalfa growing in rows spaced 45 to 60 cm apart. Lowest yields were those from alfalfa growing in rows spaced 30 cm apart.New plants originating from creeping roots did not appear between the seeded rows until the third growing year. The number of creeping plants varied between row spacings, increasing numbers occurring with increasing row spacings. After six years, creeping plants made up only 2 to 3% of total stand in the 30-cm spaced rows, but constituted about 20% of stand where row spacings were 90 cm or greater.The significance of row spacings, origin of new plants, and the longevity and productivity of the stands are discussed.
INHERITANCE OF FATTY ACID COMPOSITION IN WINTER FORMS OF RAPESEED, BRASSICA NAPUS
Authors: Krzymanski J. , Downey R. K.
Published: March 2010

The transfer of the zero erucic acid characteristic from spring to winter rapeseed (Brassica napus L.) and the identification of a new allele determining the erucic acid level in rapeseed oil are reported. Fatty acid analysis of F2 seed from the cross zero × low (7%) erucic acid winter rapeseed parents supported the hypothesis that, in these strains, one gene pair governs the level of erucic acid, and that each, allele contributes approximately 3.5% erucic and 6% eicosenoic acid to the seed oil. Gene action is similar to other alleles in this series, in that the genes display no dominance and act in an additive manner. The long-chain fatty acids, erucic and eicosenoic, were each significantly negatively correlated with the 18 carbon fatty acids, oleic and linoleic. Within each of the three F2 genotypes, correlation coefficients between oleic and linoleic were also negative and significant.
EFFECT OF STAGE AND HEIGHT OF CUTTING ON THE DRY MATTER YIELD AND PERSISTENCE OF INTERMEDIATE WHEATGRASS, BROMEGRASS, AND REED CANARYGRASS
Authors: Lawrence T. , Ashford R.
Published: March 2010

The effects of harvesting at three heights of cutting and four stages of development on the dry matter yield and persistency of intermediate wheatgrass, Agropyron intermedium (Host.) Beauv., bromegrass, Bromus inermis Leyss., and reed canarygrass, Phalaris arundinacea L., were studied at two sites on irrigated land.The dry matter yield of all species decreased with increasing heights of cutting, and increased with advancing maturity at the time of taking the initial harvest. Highest yields were obtained from all species when cut at a height of 3.8 cm during the seed stage of development. However, this height of cutting resulted in the highest degree of winter injury and the most rapid stand deterioration. Bromegrass was less sensitive to variation in cutting height than intermediate wheatgrass or reed canarygrass. On well-drained, irrigated land, intermediate wheatgrass yielded significantly more forage than either bromegrass or reed canarygrass.The application of a regression analysis to the study of significant interactions among management factors and species within a single test proved to be a very useful statistical approach.
INFLUENCE OF FORM OF NITROGEN AND pH ON GROWTH AND NUTRIENT LEVELS IN THE LEAVES AND ROOTS OF THE LOWBUSH BLUEBERRY
Authors: Townsend L. R.
Published: March 2010

In a water culture study with lowbush blueberry (Vaccinium angustifolium Ait.), growth was significantly better at pH 4.5 than at pH 6.0 (22.9 g new growth per plant compared with 9.6 g) and with NH4-N than with NO3-N (21.9 g compared with 10.7 g). The absence of a significant pH × form of N interaction suggested that the effects of pH and form of N were independent. Form of N and pH also affected the levels of various nutrients in the leaves and roots.
ADSORPTION OF SOME HERBICIDES BY SOIL AND ROOTS
Authors: Grover R. , Hance K. J.
Published: March 2010

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ETHYLENE ANALYSES BY AUTOMATIC GAS CHROMATOGRAPHY
Authors: Lougheed E. C. , Franklin E. W. , Smith R. B.
Published: March 2010

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