bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Interaction of Genotype and Night Temperature in Oat and Barley Varieties1
Authors: Grafius J. E. 
Published: July 2010

SynopsisA method is suggested for observing and measuring the genotype‐night temperature interaction in the field. Data indicate that the interaction may be an important factor in the relative yields of a variety of oats or barley. Genotype‐night temperature interaction curves were found to fit the equation y = c10kt where y = yield in percent of the location mean, and t = average daily minimum temperature over a given period. Values for c and k are constant for a given variety.
Pubescence Inheritance and Leafhopper Resistance Relationships in Alfalfa1
Authors: Taylor Norman L. 
Published: July 2010

SynopsisPubescent alfalfa plants (Hairy Arabian) were found more resistant to leafhopper infestation than glabrous plants, although differences in resistance were found among progenies of glabrous plants, indicating that resistance was inherited. Pubescence was inherited as a quantitative character. Data indicate undesirability of using this type of pubescence as a source of leafhopper resistance.
Factors Causing Errors in the Determination of Dry Matter and Nitrogen in Forage Crops1
Authors: Hesse W. H. , Kennedy W. K. 
Published: July 2010

SynopsisGreen forage piled over bagged samples resulted in more accurate measurement of dry matter content of forage samples. The protection decreased moisture loss by evaporation. Weighing on an accurate balance in a building was more accurate than weighing immediately in the field on less sensitive scales. Respiration losses occurred when samples were not oven‐dried until 24 hours after collection. Samples subjected to respiration loss showed greater concentration of total nitrogen than those with no dry matter losses.
Some Applications of the Thermoelectric Method for Measuring Water Flow Rates in Plants1
Authors: Bloodworth M. E. , Page J. B. , Cowley W. R. 
Published: July 2010

SynopsisMaximum transpiration rates for cotton plants were found to occur when relative humidities varied between 42 and 50%, temperatures from 95 to 100 F., and wind velocities between 1 and 4 miles per hour. Soil moisture tension appeared to control absorption and movement of water in plants.
Inter‐relationship of Tillers and Main Stems in Oats1
Authors: Labanauskas C. K. , Dungan G. H. 
Published: July 2010

SynopsisData suggest that the undisturbed main stem of oats is not affected materially by tillers, although translocation of nutrients can take place under certain conditions, viz., when blades are removed from the main stem or tillers, and when panicles are removed and blades remain intact. Defoliated tillers benefited from an undisturbed main stem in order of their age. The performance of any stem appears to be influenced by the favorableness of conditions surrounding other stems of the same plant.
The Distribution of Excreta by Freely Grazing Cattle and Its Effect on Pasture Fertility: II. Effect of Returned Excreta on the Residual Concentration of Some Fertilizer Elements1
Authors: Petersen R. G. , Woodhouse W. W. , Lucas H. L. 
Published: July 2010

SynopsisData indicate that freely grazing animals distribute fertilizers inefficiently, the degree varying with size of the area effectively fertilized by each excretion and with the rate of loss of each element after application. The greatest benefit from excretal return of such elements, as P and K appear to be under conditions of high stocking rate and long periods of grazing time. Reliable values for such factors as effective area fertilizer per excretion and rate of nutrient loss are needed to estimate the effect of grazing animals on the fertility status of a pasture.
Varietal Responses of Soybeans to a Bacterial‐Induced Chlorosis1
Authors: Erdman Lewis W. , Johnson Herbert W. , Clark Francis 
Published: July 2010

SypnosisThe degree of susceptibility of 40 varieties of the soybean (Glycine max L.) to a bacterial‐induced chlorosis is reported. Ten varieties showed no chlorosis when given selected inoculants in greenhouse tests; 7 others proved to be negligibly susceptible; 11 varieties showed a light or variable susceptibility; 6 were moderately susceptible; and 6 were highly susceptible. The results are discussed in relation to nodulation and symbiotic nitrogen fixation and yield.
Availability of Ammoniacal Nitrogen to Lowland Rice as Influenced by Fertilizer Placement1
Authors: Mikkelsen D. S. , Finfrock D. C. 
Published: July 2010

SypnosisSub‐surface (drilled) placement of ammonium nitrogen produced better growth and yields of lowland rice than similar nitrogen applied on the soil surface (broadcast). Nitrogen content of rice plants and percentage recovery of the applied nitrogen also increased. Ammonium nitrogen drilled 2 to 4 inches into the soil, where reducing conditions developed 3 to 5 days after flooding, remained in the soil and was available to lowland rice. Surface nitrogen, applied by broadcast methods, did not promote the best growth of rice. Losses of surface applied nitrogen apparently occurred through processes of nitrification and subsequently denitrification.
Fractionation of Phosphorus in Kansas Soils and Its Significance in Response of Wheat to Phosphate Fertilizers1
Authors: Bhangoo M. S. , Smith F. W. 
Published: July 2010

SynopsisPhosphorus of seven surface soils and corresponding subsoils was fractionated. Iron and aluminum phosphates accounted for more than half of the total P in surface material and about two‐thirds of that in subsoils. Organic P represented about one‐third of the total P in surface soils but only about one‐fifth in subsoils; “adsorbed” P and acid soluble P represented about 10% and 5%, respectively, of the total. Two distinctly different methods were used to measure “chemically available” phosphorus. Each method was satisfactory.
Competitive Relationships in Variable Weed and Soybean Stands1
Authors: Weber Charles R. , Staniforth David W. 
Published: July 2010

SynopsisGrowth of annual weeds increased markedly and bean yield reductions became more severe with soybean stands of less than 9 to 11 plants per foot of row. Bean yield reductions were more severe when weeds were left until or after stage 7 (early August). With moderate weed infestations and moisture deficits during the growing season, soybean yield reductions were less than with adequate moisture. Foxtail and smartweed infestations reduced bean yields about equally. Dry matter yields of above‐ground plant parts of soybeans and weeds together were slightly higher than that of weed‐free beans.
Change in Nutrient Element Accumulation by Corn With Depletion of Soil Moisture1
Authors: Jenne E. A. , Rhoades H. F. , Yien C. H. , Howe O. W. 
Published: July 2010

SynopsisPhosphorus, dry matter, nitrogen, magnesium, potassium and calcium accumulation by the mature corn plant grown under conditions of decreasing soil moisture supply were 40, 44, 50, 65, 71 and 93%, respectively, of the values obtained for the mature corn plant produced with adequate moisture throughout the growing season.
The Influence of Barley Stripe Mosaic on Yield and Other Plant Characters of 8 Spring Wheat Varieties Grown at 4 Nitrogen Levels1
Authors: McNeal F. H. , Berg M. A. , Afanasiev M. M. , Army T. J. 
Published: July 2010

SynopsisBarley stripe mosaic infection caused moderate to severe reduction in plant height, total culms, dry‐matter production, kernel weight, test weight, and grain yield in 8 spring wheat varieties. The average yield reduction attributable to infection was 32.8% in the 8 varieties. Protein percentages were higher in grain from the diseased plots than from the healthy plots. Variety C.I. 13041 was not greatly affected. The application of nitrogen tended to increase symptom development of the disease.
The Effect of Nitrogen Fertilizers on the Relationship Between Increases in Yields and Protein Content of Pastry‐Type Wheats1
Authors: Hunter Albert S. , Gerard Cleveland J. , Waddoups H. Marr , Hall W. E. , Cushman H. E. , Alban L. A. 
Published: July 2010

SynopsisProtein content was not raised to objectionably high values until more nitrogen was applied than that needed to produce “maximum yield.” When applied nitrogen increased the yields significantly, they increased at a greater rate than protein content; for greater applications, protein content increased more rapidly than yield.
Effect of Row Direction on Spring Oat Yields1
Authors: Pendleton J. W. , Dungan G. H. 
Published: July 2010

SynopsisSpring oats drilled in north‐south direction yielded slightly more grain than those seeded in east‐west direction. The advantage for north‐south row direction increased as row spacing increased. Stand counts of inter‐seeded clover varied with oat row spacing and this variation was affected by distance from the oat rows and also the direction of the oat rows. Soil moisture and light intensity data were collected in an attempt to explain this interesting ecological phenomenon.
Effect of Subsoiling and Rotation on Yields of Corn1
Authors: Anderson J. C. , Neal O. R. , Vomocil J. A. , Brill G. D. 
Published: July 2010

SynopsisYields of corn were consistently depressed by sub‐soiling when soil moisture was at field capacity. Rotation substantially corrected this in about 4 years. Yields of corn were closely related to water stability of aggregates and to soil bulk density measurements.
Effectiveness of the Rotary Hoe for Weed Control in Soybeans1
Authors: Lovely W. G. , Weber C. R. , Staniforth D. W. 
Published: July 2010

SynopsisRotary hoeing performed when weeds were germinating but not emerged, and repeated once or twice at approximately 5‐day intervals, reduced weed infestations 70 to 80% and soybean stands about 10% in solid‐seeded and row‐planted soybeans. Bean yields were only slightly less than those from weed‐free plantings. When hoeing was delayed until weeds had emerged, both weed control and bean yield were impaired 50%. Wet soil conditions before or after hoeing reduced its effectiveness.
Nitrogen Fertilization Increases N, P, and K Concentrations in Oats1
Authors: Grunes D. L. , Krantz B. A. 
Published: July 2010

SynopsisTop‐dressings of N in the spring, 2 to 3 weeks before oats were plowed under in the “boot” stage, increased N, P, and K concentrations in oat tops. This effect on P and K absorption was due in part to increased root growth.
The Effects of Continued Use of Heavy Rates of Fertilizers on Forage Production and Quality of Coastal Bermudagrass1
Authors: Fisher F. L. , Caldwell A. G. 
Published: July 2010

SynopsisCoastal Bermudagrass produced an average (1954–57) of 13.0 tons of 13% protein hay per acre when fertilized with 1000 pounds of nitrogen annually. Without nitrogen 2.7 tons of 8% protein hay was produced. Four hundred pounds of N annually produced 8.6 tons of 12% protein hay. Plant and soil analyses suggest a 5–1–2 ratio of N, P2O5, and K2O should be applied to obtain high production. Liming is necessary to control soil acidity.
Yield and Protein Content of Irrigated Napiergrass, Guineagrass and Pangolagrass as Affected by Nitrogen Fertilization1
Authors: Little Samuel , Vicente Jose , Abruna Fernando 
Published: July 2010

SynopsisIrrigated, properly fertilized napiergrass, guineagrass and pangolagrass produced 51,491, 41,714, and 18,907 pounds of dry forage per acre yearly, respectively. Yields of napiergrass and guineagrass increased markedly with nitrogen rates up to 800 pounds of N per acre yearly. Protein content of all the grasses increased with nitrogen fertilization up to the 1,600 pound level at which it approached 12% with all species.
Influence of Gibberellic Acid on the Growth of Kentucky Bluegrass1
Authors: Leben Curt , Alder E. F. , Chichuk Alexander 
Published: July 2010

SynopsisGibberellic acid applied at various times of the year produced an initial increase of growth of established bluegrass, With late fall or early spring applications the initial increase was followed by less growth, resulting in no over‐all gain. Summer plots treated biweekly produced more grass than controls by the end of that season; however, the next spring the ground cover on treated plots was less. A single fall application likewise resulted in less spring cover.
Effectiveness of Various Solutions for Simulating Drouth Conditions as Measured by Germination and Seedling Growth1
Authors: Wiggans S. C. , Gardner F. P. 
Published: July 2010

SynopsisProgressively increasing concentrations of glucose, sucrose, and D‐mannitol solutions decreased the germination percentage and radicle elongation of radish and sorghum seed. Solutions of NaCl and PVP apparently were toxic to seed germination. The use of antibiotics had no effect on germination and radicle elongation.
Corn Yields as Influenced by Nitrogen Level and Drouth Intensity1
Authors: Parks W. L. , Knetsch J. L. 
Published: July 2010

SynopsisCorn yields on a Lintonia soil receiving several rates of nitrogen ranged from 17 to 138 bushels per acre over a 3‐year period. The drouth conditions for each growing season were indexed and the corn yields related to the nitrogen level and drouth index by regression analyses. Such a relationship accounted for 97% of the variability between treatment means.
Stem Rust Resistant Variants in Irradiated Populations Mutations or Field Hybrids?1
Authors: Caldecott Richard S. , Stevens Harland , Roberts Bill J. 
Published: July 2010

SynopsisThe relatively large number of rust‐resistant mutants observed in the N2 coming from N1 plants not isolated in the Aberdeen nursery were not true Markton phenotype and it is suggested they are the result of field hybridization. There were no rust‐resistant mutants in the N2 population grown from isolated N1 plants.
Modification of the Step‐Point Method for Evaluating Species Yield Changes in Fertilizer Trials on Annual Grasslands1
Authors: Jones Milton B. , Evans Raymond A. 
Published: July 2010

SynopsisAverage species height times percentage of the ground covered by the species (HxG) was found to be correlated with the species yield determined by clipping, separating, and weighing. The HxG factor for each species showed more significant differences between treatments and had lower coefficients of variation than the yield data for that species. Much less time was required to obtain the HxG measurement than to get species yields, and the precision of HxG was greater.
Pollen Shedding in Russian Wildrye Grass1
Authors: Dotzenko A. D. , Stegmeier W. D. 
Published: July 2010

SynopsisRussian wildrye grass shed pollen for a nine‐day period. Maximum pollen production occurred between 4:00 p.m. and 5:00 p.m. Temperature not only affected amount of pollen produced but also the length of time and time of day that pollen was produced.
The Availability of Sulfur in Norfolk Loamy Sand and Leadvale Silt Loam as Measured by Cotton Growth1
Authors: Anderson O. E. , Webster R. H. 
Published: July 2010

SynopsisCotton was not adversely affected when grown 5 years without added S on a Leadvale silt loam containing, in the upper 12 inches, 128 ppm of S extractable in Morgan's solution. However, when similarly grown on a Norfolk loamy sand containing one ppm extractable S, deficiency symptoms appeared on the plants by the fourth year, and yields were significantly reduced by the fifth year.
Comparative Response to Gibberellic Acid of Dwarf, Semidwarf, and Standard Short and Tall Winter Wheat Varieties1
Authors: Allan R. E. , Vogel O. A. , Craddock J. C. 
Published: July 2010

SynopsisFour dwarf and semidwarf wheat varieties were not induced to attain a standard height by treatment with gibberellic acid, and they responded less to treatment than the standard‐height varieties. Optimum growth response occurred generally after injections with 100‐ppm of gibberellic acid, whereas inhibition was sometimes observed after treatment with 1000‐ppm. Spike emergence of 3 of the 6 varieties was hastened. Treatment affected internodes of three varieties differently depending on both variety and concentration of gibberellic acid.
Some Effects of Handling on the Growth and Development of Cotton1
Authors: Frizzell J. L. , Brown Lamar C. , Waddle B. A. 
Published: July 2010

SynopsisInternode length, internode number, and height of cotton plants were reduced significantly by handling. Handling treatments did not significantly affect number of bolls set, percent of bolls shed, boll size, earliness, yield, or pollination within individual flowers.
Yield and Mineral Composition of Eight Forage Species Grown at Four Levels of Soil Moisture1
Authors: Kilmer Victor J. , Bennett Orus L. , Stahly Virginia F. , Timmons Donald R. 
Published: July 2010

SynopsisThe effect of soil moisture levels on the concentration of 12 elements was determined in fieldgrown Atlantic and African alfalfa; red, intermediate white, and Ladino clover; fescue, reed canarygrass, and orchardgrass. The phosphorus content in all forage species increased as soil moisture supply increased but other elements were not consistently affected.
Nitrogen Dioxide Production from Silage. I. Field Survey1
Authors: Scaletti J. V. , Gates C. E. , Briggs R. A. , Schuman L. M. 
Published: July 2010

SynopsisOf 332 farm silos studied in detail, 42% showed the presence of nitrogen dioxide in concentrations considered hazardous. The factors of organic matter, available potassium and phosphorus levels in soils, and the use of sodium metabisulfite as a silage preservative were related to production of nitrogen dioxide.
The Mowing of Turfgrass. I. The Effect of Season, Interval, and Height of Mowing on the Growth of Seaside Bentgrass Turf1
Authors: Madison John H. 
Published: July 2010

SynopsisRegrowth of mowed turf consists of two phases, elongation of cut leaves and production of new leaves. “Seaside” bentgrass produced more mean growth as clippings with longer intervals between mowings, at shorter mowing height, and during the spring.
Meristem Development of Winter Barley as Affected by Vernalization and Potassium Gibberellate1
Authors: James Norman I. , Lund Steve 
Published: July 2010

SynopsisFloral initiation and acceleration of meristem development of barley were brought about by treatment with potassium gibberellate. The accelerating effect decreased, however, with increasing age of plant, resulting in delay in heading, fewer heads produced, and induction of male sterility.
Effects of Gibberellic Acid Treatment on Safflower1
Authors: Yermanos D. M. , Knowles P. F. 
Published: July 2010

SynopsisFoliar applications of gibberellic acid on field plantings of safflower depressed seed yields and oil content of the seed. They induced earliness, internode elongation, and sterility, accompanied by chlorosis and susceptibility to Phytophthora root rot. Seed weight and iodine number of the oil were not affected.
Growth and Mineral Content of Carrots and Beans as Related to Varying Osmotic and Ionic‐Composition Effects in Saline‐Sodic Sand Cultures1
Authors: Lagerwerff J. V. , Holland John P. 
Published: July 2010

SynopsisIn salt‐affected agriculture, the tolerance of the crops for sodium depends on the level of salinity, and the tolerance for salinity on the level of sodium in the growth medium.
Effects of Harvesting an Oat Companion Crop at Four Stages of Maturity on the Yield of Oats, on Light Near the Soil Surface, on Soil Moisture, and on the Establishment of Alfalfa1
Authors: Klebesadel L. J. , Smith Dale 
Published: July 2010

SynopsisOats produced highest dry matter yields at near early dough stage, but protein yields were highest at near early dough or from harvests made whenever oats reached 12 to 16 inches. Less soil moisture and light were available to the alfalfa seeding but weeds were less numerous before and after removal of the oats at maturity than when harvested earlier. Slightly thinner alfalfa stands resulted from oats harvested at maturity, but alfalfa forage yields were comparable to other treatments.
Inheritance of Resistance of Soybeans to the Cyst Nematode, Heterodera Glycines1
Authors: Caldwell B. E. , Brim C. A. , Ross J. P. 
Published: July 2010

SynopsisThe F1, F2, and testcross generations from crosses involving resistant ✕ susceptible soybeans were evaluated for ability to inhibit reproduction of the soybean cyst nematode. These data indicate that resistance is the result of three independently inherited recessive genes.
Selecting Green Needlegrass for Low‐Dormacy Seed1
Authors: Schaaf H. M. , Rogler G. A. 
Published: July 2010

SynopsisLow seed dormancy of green needlegrass was transmitted from parent to progeny. In addition, dormancy was greatly influenced by environment and interactions of genotype and environment. Stage of seed maturity at harvest was particularly important. The mechanism conditioning reduced dormancy was expressed in both immature and mature seed.
Plant Competition in Relationship to Nitrogen Economy1
Authors: Peterson Maurice L. , Bendixen Leo E. 
Published: July 2010

SynopsisThe recovery of nitrogen in the top growth of orchardgrass was found to be linearly related to the clover nitrogen plus the fertilizer nitrogen in a ladino clover‐orchardgrass mixture. These studies showed a recovery of 72% and the clover nitrogen was able to completely replace fertilizer nitrogen.
Post‐Harvest Dormancy in Wheat Varieties1
Authors: Ching T. M. , Foote W. H. 
Published: July 2010

SynopsisVarious degrees of post‐harvest dormancy were found in ten wheat varieties as indicated by germination speed and by specificity of germination temperature. The dormancy remained when stored at 3° C. but disappeared within one month when stored at room temperature or at 38° C. The dormancy was not related to impermeable testa or barrier for gas exchange. The presence of growth inhibitors was demonstrated.
Method of Phorate Application and Its Effect on Hessian Fly Control, Germination, and Forage and Grain Yields of Wheat1
Authors: Kerr Eric D. , Poehlman J. M. , Brown H. E. 
Published: July 2010

SynopsisPhorate, an organic phosphate chemical, when seeded with wheat in a granular form controlled the hessian fly and stimulated fall forage growth. Seed treatments with phorate reduced stands and decreased fall forage yields and grain yields. Small reductions in germination and forage yields were obtained when phorate was applied as a fertilizer additive.
Chemical, Physical, and Baking Properties of Preripe Wheat Dried at Varying Temperatures1
Authors: Finney K. F. , Shogren M. D. , Hoseney R. C. , Bolte L. C. , Heyne E. G. 
Published: July 2010

SynopsisLoaf volume, crumb grain, and mixing time of preripe hard red winter wheat were affected adversely when dried at temperatures over 160° F., depending on amount of moisture in the grain.
Mowing of Turfgrass. II. Responses of Three Species of Grass1
Authors: Madison John H. 
Published: July 2010

SynopsisResponses to mowing of Highland and Seaside bentgrasses and Alta tall fescuegrass evaluated by yield were similar. Greatest yield was produced by Aha, in the spring season (Mar), and at longer intervals between mowing. Chlorophyll content of clippings was greatest at mowing intervals of 4 and 10 days. Regrowth on the day following mowing approached the mean growth rate at mowing intervals of 10 or more days.
Preparation of Plant Samples for X‐Ray Emission Spectrography1
Authors: Chesnin Leon , Beavers A. H. 
Published: July 2010

SynopsisBriquets of ground corn leaves were made using a cementing agent called Permount and analyzed for zinc content by X‐ray spectrography. Briquets prepared in this way were uniform in composition and could be stored for long periods without physical or chemical changes.
Spatial Distribution of Net Radiation in a Corn Field1
Authors: Denmead O. T. , Fritschen L. J. , Shaw R. H. 
Published: July 2010

SynopsisOn clear days, after maximum leaf area development, the net radiation at the ground constituted only 25% of the total net radiation measured above the crop, 75% being expended within the crop canopy. Some 73% of the energy expenditure within the crop occurred in its upper half. It is estimated that closer row spacing than 40 inches could increase the energy available to the crop for photosynthesis by 15 to 20%.