bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of Fertilizers, Age of Stand, and Decomposition on Weight of Grass Roots and of Grass and Alfalfa on Soil Nitrogen and Carbon1
Authors: Haas H. J. 
Published: July 2010

SynopsisNitrogen fertilizer increased root weights of three species of grass. Phosphorus increased root weights at the higher rate, while potassium had no effect. Increase in root yield was greatest the first 3 or 4 years after seeding. From 75 to 95% of the roots in the surface 6 inches had decomposed 2½ years after plowing. Changes in soil nitrogen and carbon content during a 5‐year period after seeding to grass and alfalfa and after plowing the sod were small.
Performance of Alfalfa Varieties, Red Clover, and Alsike Clover Grown Under Irrigation at Approximately 8,800 Feet Above Sea Level in Mexico1
Authors: Buller Roderic E. , González Martín 
Published: July 2010

SynopsisA breeding program to develop alfalfa varieties which are resistant to root, crown, and foliar diseases was shown to be needed in the high‐altitude agricultural area of Mexico. The well‐adapted Mexican alfalfa, Apaseo, and the Spanish alfalfa, Valenciana, are recommended as the basis for this program. The performance of red clover, a new forage legume in the Valley of Toluca, was outstanding. Kenland medium red clover was harvested 14 times during 3 harvest years and produced an average annual yield of 12.19 tons of hay per acre.
Evapotranspiration Rates for Alfalfa and Vegetable Crops in New York State1
Authors: Peck N. H. , Vittum M. T. , Miller R. D. 
Published: July 2010

SynopsisMaximum average evapotranspiration rates in inches per day over 10‐day periods for irrigated peas, alfalfa, tomatoes, sweet corn and cabbage grown on Kendaia and Lima silt loams were 0.19 (late June); 0.19, 0.21, 0.21 (late July) and 0.17 (mid‐August) respectively.
The Inheritance of Weak Stalk in Sorgo1
Authors: Coleman Otto H. , Stokes I. E. 
Published: July 2010

SynopsisIn the sorgo cross, Sart × Iceberg, the erectness of Sart was inherited as a simple dominant (EE) to the weak stalk (ee) of Iceberg. This factor pair was inherited independently of the factor pairs governing anthracnose resistance (Ll) and stalk red rot resistance (Lsls).
A Comparison of Grass‐Legume Mixtures, Legumes, and Grass Under Irrigation as Pasture for Sheep1
Authors: Heinemann W. W. , VanKeuren R. W. 
Published: July 2010

SynopsisIn irrigated pasture studies with sheep, alfalfa and orchardgrass‐alfalfa produced the highest liveweight gains per acre. The average daily gains were higher on legumes and orchardgrass‐legume mixtures than on orchardgrass slope. The ability of alfalfa to persist under grazing was shown by the excellent stands of this legume at the end of 3 years of grazing.
Wheat and Oats Varietal Responses to Applications of Alkanolamine Salt of 2,4‐D1
Authors: Price C. D. , Klingman G. C. 
Published: July 2010

SynopsisTreatment of 27 winter wheat varieties resulted in decreased yields in 2 varieties when treated March 1 with ½ pound per acre of 2,4‐D; in 24 when treated November 26 with ½ pound per acre; in 17 when treated March 1 with 2.0 pounds per acre; and in 26 when treated November 26 with 2.0 pounds per acre. Treatment of 29 winter oat varieties resulted in decreased yields in 3 varieties when treated March 1 with ½ pound per acre; in 26 when treated November 26 with ½ pound per acre; in 26 when treated March 1 with 2.0 pounds per acre; and in 29 when treated November 26 with 2.0 pounds per acre.
Observations on the Lodging Resistance Formula1
Authors: Grafius J. E. 
Published: July 2010

SynopsisThe cLr estimate of lodging resistance works well within groups of morphologically similar varieties of oats. The lack of agreement between groups was shown to be associated with variations in area of heads. In winter barley this factor was not as important as for oats. Data on the torque due to wind on various parts of the shoot appear to explain the aberrant readings.
The Effects of Complementary Epistasis on the Inheritance of a Quantitative Character, Seed Size in Lima Beans1
Authors: Ryder Edward J. 
Published: July 2010

SynopsisThe inheritance of seed size in a lima bean cross was influenced by a form of complementary epistasis. This was evidenced by depression of means with inbreeding, significance of scaling statistics, skewness of frequency distributions and mean arrays, and distortion of other genetic effects. Distortion was most apparent in the results of a variance component analysis and a factorial analysis.
Effect of Nitrogen Sources in Complete Fertilizers on Bluegrass Turf1
Authors: Gilbert F. A. , Bowers A. H. , Sanders M. D. 
Published: July 2010

SynopsisA single spring application of fertilizer containing both quickly and slowly available nitrogen produced a greater summer weight of grass than either regular fertilizer or sewage sludge with equivalent nitrogen contents. The advantage was more pronounced when clippings were removed than when they were retained. Summer grass yields were greatest when a spring fertilizer‐application was supplemented by additional summer treatments.
Mass Hybridization Techniques as Applied to Standard Crested Wheatgrass, Agropyron Desertorum (Fisch.) Shult1
Authors: Hansen James E. , Dewey Douglas R. 
Published: July 2010

SynopsisBagged heads of standard crested wheatgrass cross‐pollinated by circulating air in the bags daily during anthesis produced seed yields comparable to those from open pollination. Detaching male and/or female culms decreased seed set when cross‐pollinated under bags. Seed‐set was reduced 66% by the hot‐water emasculation effect on pollen. Approximately 25% of the ovaries did not function as the result of hot‐water emasculation. Tap water sustained detached culms as well as or better than any of four other solutions.
Irrigation of a Ladino Clover‐Bromegrass Sheep Pasture in Michigan1
Authors: Tesar Milo B. , Blakeslee L. H. , Kidder E. H. 
Published: July 2010

SynopsisLadino clover‐bromegrass sheep pastures irrigated with 4½ inches of water annually during a 4‐year period under a humid climate gave 23% more forage and 22% more lamb gain than nonirrigated postures. Forage production was increased an average of 0.16 ton per inch of applied water. Irrigation helped maintain clover in the pasture.Based on a replacement value of $25.00 per ton of dried forage and an annual irrigation cost of $4.03 per acre‐inch of water, irrigation resulted in a net loss of $13 per acre.
Relation of Fertilizer Placement to Nutrient Uptake and Crop Yield I. Interaction of Row Phosphorus and the Soil Level of Phosphorus1
Authors: Barber Stanley A. 
Published: July 2010

SynopsisBroadcast applications of phosphorus increased the yields of a corn; soybean, wheat, and hay rotation over a 6‐year period. Response to row phosphorus was reduced as the soil level was increased. Corn yields were larger at high soil levels than with row applications alone. Wheat yields decreased at the highest application rates in some years because of lodging.
Comparisons of the Productivity of Permanent and Rotation Pastures on Plowable Cropland. II. Second Six‐Year Cycle and Summary1
Authors: Sund J. M. , Wright M. J. , Zehner C. E. , Ahlgren H. L. 
Published: July 2010

SynopsisIn twelve years of evaluations of continuous bluegrass, periodic renovation, and two six‐year rotations, maximum production of dry matter and T.D.N. was obtained from the rotation of corn, oats, and four years of alfalfa‐bromegrass. The continuous bluegrass area was least productive. The renovated area out‐yielded the clover‐grass rotation area over the second six‐year period.
The Effect of Certain Nutrients Upon the Hydrocyanic Acid Content of Sudangrass Grown in Nutrient Solution1
Authors: Patel C. J. , Wright M. J. 
Published: July 2010

SynopsisLevels of cyanide in Sweet Sudan were positively associated with levels of nitrogen in the nutrient solutions employed, and negatively associated with levels of phosphorus. There was no consistent response to potassium. Line 109, inherently low in cyanide, did not respond to any of the nutrient treatments. Levels of cyanide were higher in seedlings 20 days old than in those 15, 25, 30, or 35 days old.
Magnesium Immobility in the Nodes of Certain Corn Inbreds1
Authors: Schauble C. E. , Barber S. A. 
Published: July 2010

SynopsisOf two inbred lines of corn, Ohio 40B and Ind. WF9, the Ohio 40B accumulated 50% more magnesium in the outer upper portion of the nodes of the plant than did Ind. WF9, yet its leaves contained only half as much magnesium. A large portion of the accumulated magnesium was water soluble. No morphological differences were observed. Differences were attributed to magnesium translocation mechanisms.
Development of Spring Wheat: II. The Effect of Temperature on Responses to Photoperiod1
Authors: Riddell J. A. , Gries George A. 
Published: July 2010

SynopsisTwo varieties of spring wheat, Chinese and White Federation 38, flower earlier as the daylength increases, the former variety being much less sensitive to changes in photoperiod and temperature than the latter. Chinese was earlier under cool‐temperature, short‐day conditions, and White Federation 38 was earlier in a long‐day, warm‐temperature environment.
Greenhouse Studies on Alfalfa With Soil Type, Soil Reaction and Borax Fertilization as Variables1
Authors: Baker A. S. , Cook R. L. 
Published: July 2010

SynopsisBoron extracted by refluxing soils for five minutes in boiling water produces simply a measure of the equilibrium concentration of boron in the soil solution. It is proposed that a measure of the rate of equilibrium establishment may also be required to obtain a better estimate of boron available to growing plants.
Determining Minimum Populations for Initial Evaluation of Breeding Material1
Authors: Graybill Franklin A. , Kneebone William R. 
Published: July 2010

SynopsisTwo procedures are illustrated with examples. Method I uses estimated population variability and is demonstrated by determining minimum samples necessary for average confidence interval lengths to be stated percentages of parameter means with stated probability. Given coefficients of variation, sample sizes necessary for specified degrees of precision are shown graphically.Method II uses variability estimates from initial sampling to determine final sample sizes needed to meet stated standards in evaluation.
Effect of Rate and Frequency of Potash Additions on Pasture Yield and Potassium Uptake1
Authors: Doll E. C. , Hatfield A. L. , Todd J. R. 
Published: July 2010

SynopsisNo differences in total yields for 4 years were obtained when equal amounts of potassium were applied to a grass‐legume pasture as either 1 initial or 4 annual applications, although yields the fourth year were lower when 400 pounds of K2O per acre were applied initially than when the same total amount was applied in 4 annual applications. The effectiveness of the initial applications is thought to be associated with release of initially fixed potassium.
Relative Rates of Mineralization in Soil of Organic Nitrogen from Several Forage Crops1
Authors: Stewart Ernest H. 
Published: July 2010

SynopsisRate of mineralization of root and top‐growth materials of alfalfa, white clover, annual lespedeza, perennial lespedeza, Kudzu, and tall fescue correlated closely with nitrogen content. Early immobilization of nitrogen occurred with organic materials with less, than 2.5% nitrogen. A net release of nitrogen occurred within 6 weeks from materials containing as little as 1% nitrogen. Added ammonium nitrogen was partially immobilized and then slowly released.
Phosphate Sources in Pasture Production on a Bernard Clay Loam1
Authors: Weihing Ralph M. , Caldwell A. G. , Fudge J. F. 
Published: July 2010

SynopsisSuperphosphate, basic slag, and rock phosphate significantly increased the yield of forage as well as the protein and phosphorus contents, but an annual application of P2O5 as superphosphate was superior to the other treatments.
A Comparison of Predicted with Realized Gain from Selection for Leafspot Resistance in Alfalfa1
Authors: Adams M. W. , Semeniuk G. 
Published: July 2010

SynopsisIt was predicted that a combination of family and individual selection for resistance to common leafspot in an alfalfa population would improve the mean score from 3.32 to 2.39. Actually, the new population resulting from intercrossing the selections measured 2.06. Additive genetic variance was virtually exhausted by one generation of selection.
The Effect of Temperature Upon Flowering in Paspalum1
Authors: Bennett Hugh W. 
Published: July 2010

SynopsisLight became the limiting factor for flowering in 3 Paspalum species at 60° and 55° F. temperatures. P. dilatatum, P. malacophyllum, and P. urvillei began blooming within the same 2‐hour period at these temperatures. These temperatures increased the time anthers remained pendent without dehiscing and enabled emasculation.
Generalization of Yield Equations in Two or More Variables: II. Application to Yield Data1
Authors: Jensen Don , Pesek John 
Published: July 2010

SynopsisRestrictive two‐variable quadratic equations defining yield as a function of fertilizer inputs for a given soil fertility level were generalized to forms allowing prediction over a range of initial fertility conditions. Coefficients of equations so generalized from separate restrictive equations were found to estimate parameters of the same equation characteristic of a given soil type. Conclusions were based upon results of statistical methods applied to test the similarity of corresponding coefficients of two and three equations.
Nitrogen Fertilization and Cutting Management of Sudangrasses and Millets1
Authors: Broyles K. R. , Fribourg H. A. 
Published: July 2010

SynopsisGahi‐1 pearl millet outyielded and contained more N than did Piper or Sweet Sudangrasses, both of which outproduced German millet. Cutting at early‐bloom to 4‐inch stubble produced largest yields, followed by cutting at 30 inches to 10‐ or 6‐inch stubble, and at 20 inches to 6‐inch stubble. Nitrogen production decreased in the same order except the early‐bloom cutting was lowest. Nitrogen fertilizer increased yield, N recovered, and N percentage in forage.
Potassium Availability of Fused Potassium Phosphates1
Authors: DeMent Jack D. , Stanford George 
Published: July 2010

SynopsisAvailability to plants of potassium in minus 35‐mesh fused potassium phosphates having low water solubility was equal to that in potassium chloride and sulfate. Increasing the particle size to −6+9 mesh decreased availability of the less soluble materials.
Effect of Row Spacing and Nitrogen Fertilizer on Production of Irrigated Russian Wildrye (Elymus junceus Fisch.): I. Forage Yields1
Authors: Lorenz Russell J. , Rogler George A. 
Published: July 2010

SynopsisAfter the first harvest year, yields tended to increase with increased row spacing, but often the differences were not significant. Fertilizer applied at rates of up to 400 pounds of nitrogen per acre produced highly significant yield increases for each increment of nitrogen added.
Salt Resistance of Protoplasm as a Test for the Salt Tolerance of Agricultural Plants1
Authors: Repp Gertraud I. , McAllister DeVere R. , Wiebe Herman H. 
Published: July 2010

SynopsisThe protoplasmic salt resistance of plants as measured by the effect of NaCl upon the vacuole and cytoplasm was found to be in agreement with field results and leaf succulence determinations.
Wide Corn‐Row Spaces and Wheat Interseedings1
Authors: Stringfield G. H. , Haynes J. L. 
Published: July 2010

SynopsisFull‐season, “wide‐row” (72‐inch) corn yielded 10 to 15 bushels per acre less than earlier (1 week) corn in normally spaced (42‐inch) rows with each at about its own optimum stand, 12,000 and 16,000 plants per acre, respectively. Wheat interseeded in 72‐inch row spaces at Hessian fly‐safe dates yielded more than when conventionally seeded 2 weeks later, by 2 bushels per acre on well drained soil and by 13 bushels where poor drainage led to winterkilling.
Breeding Methods for Pearl Millet (Pennisetum Glaucum) Indicated by Genetic Variance Component Studies1
Authors: Burton Glenn W. 
Published: July 2010

SynopsisEighteen populations of pearl millet singlecrosses (818 in all) tested over an 11‐year period varied greatly in the percentage of nonadditive genetic variance exhibited. On the average, 55.9% of their total genetic variance for forage yield was of the nonadditive type.
Influence of Cropping System‐Treatment Combinations and Climatic Factors on Corn Yields in the Blackland Area of Texas1
Authors: Collier J. W. 
Published: July 2010

SynopsisWithout irrigation, corn after sweetclover produced higher yields than continuous corn every year but one. Responses to nitrogen were small and inconsistent. Irrigation increased yields but responses to nitrogen occurred only in the continuous corn system. Soil nitrates and leaf nitrogen were generally higher from plots following sweetclover. Maximum yields were negatively correlated with the mean maximum temperatures during the 3‐week period after silking.
Influence of Magnesium, Potassium, and Nitrogen Nutrition on Phosphoenolpyruvate‐Stimulated Carbon Dioxide Fixation1
Authors: Thomas G. W. , Coleman N. T. , Jackson W. A. 
Published: July 2010

SynopsisHomogenates from leaves of sweet potato plants grown in solutions low in K, Mg, and N were found to have a reduced capacity to fix CO2 in the presence of phosphoenolpyruvate. Addition of Mg to the assay restored activity to Mg‐deficient leaves, but addition of K to extracts from K‐deficient leaves did not.
Recovery of the Creeping‐Root Habit in F2 Progenies in Alfalfa1
Authors: Jones Alfred , Hanson C. H. 
Published: July 2010

SynopsisRoot proliferations were first noted 10 months after seeding. At 16 months of age, 94% of the creeping‐rooted parents and 2% of the F2 individuals were creeping. The inheritance of the creeping‐root habit was complex with complementary factors indicated. There was a low positive correlation between crown width of F2 families percentage of plants creeping.
Factors Affecting Embryo Development in Crosses of Melilotus officinalis × M. alba1
Authors: Lang R. C. , Gorz H. J. 
Published: July 2010

SynopsisHighly significant differences in hybrid embryo development were found among M. officinalis plants crossed with M. alba. Hybrid embryo length and width were significantly correlated with seed weight of the maternal parent. Selection for cross‐compatibility among parental plants was effective in producing seedgrown hybrids between M. officinalis and M. alba. Embryo development was markedly influenced by date of pollination but the specific environmental factors responsible were not elucidated. Auxin applications were detrimental to embryo development in most cases.
The Interaction of Chloride with Sulfate and Phosphate in the Nutrition of Potato Plants (Solanum tuberosum)1
Authors: Corbett E. G. , Gausman H. W. 
Published: July 2010

SynopsisA highly significant negative correlation existed between Cl in nutrient solution and the uptake of SO4 in the tops of potato plants. Uptake of SO4 by roots was significantly increased by additions of P32 but not by S35 or no radioisotope. Intermediate levels of Cl reduced the uptake of P31 as compared with low and high levels of Cl. Chloride also affected maturity and dry weight relations of potato plants.
Effect of Soil Acidity on Establishment and Growth of Orchardgrass Seedlings in Pot Cultures1
Authors: Sullivan E. F. , Marriott L. F. 
Published: July 2010

SynopsisEstablishment of orchardgrass, as determined by yield of top‐growth, was most rapid at pH 6.7. Herbage quality was improved by the addition of lime to soil testing pH 4.7. Root weights decreased with increasing pH levels above pH 5.3. Pennlate orchardgrass did not become established at pH 4.7; but, the addition of 1 ton of lime per acre (pH 5.3) overcame this adverse condition.
Improvement of Tall Fescue for Palatability by Selection Within Inbred Lines1
Authors: Buckner Robert C. , Fergus E. N. 
Published: July 2010

SynopsisThe data suggest that after three generations of selection, lines become somewhat homozygous for palatability to cattle. Although there was gradual loss in vigor with each generation of inbreeding, a sufficient number of lines were maintained through four generations of selfing to indicate that selection within inbred lines may be used successfully in tall fescue improvement.
The Feasibility of Stockpiling Legume‐Grass Pasturage1
Authors: Mays D. A. , Washko J. B. 
Published: July 2010

SynopsisStockpiled pasturage is lower in quality and palatability than that which is produced under rotation grazing management. However, pastures containing a high percentage of birdsfoot trefoil appear to offer some potential for stockpiling until mid‐July in Pennsylvania, Swards containing a high percentage of grass were found to be unsuitable for stockpiling under the conditions of this experiment.
Results of Deep Fertilization and Subsoiling on a Claypan Soil1
Authors: Jamison V. C. , Thornton J. F. 
Published: July 2010

SynopsisSubsoil shattering alone on Mexico silt loam depressed crop yields. Applications of lime or phosphate to the plow sole before shattering was slightly beneficial, the residual effects for alfalfa lasting several years. Subsoil applications of lime and triple superphosphate in subsoiler clefts or by deep plowing gave significant corn or alfalfa yield increases in some cases. However, if the soil surface was adequately fertilized the increases over surface treatment alone were small and of questionable value.
Vegetative and Reproductive Growth Response of Three Trifolium Species to 2,4‐D1
Authors: Ormrod D. P. , Williams W. A. 
Published: July 2010

SynopsisSubterranean clover was found to be more tolerant to 2,4‐D than were rose clover and crimson clover, as measured by forage production, seed production, percent normally germinating seedlings from seed of treated plants, and stand in the year following treatment. Rose and crimson clovers were similar in their response to 2,4‐D.
Initial and Residual Effects of Rock Phosphate and Superphosphate1
Authors: Doll E. C. , Miller H. F. , Freeman J. F. 
Published: July 2010

SynopsisAfter 26 and 27 years at the Campbellsville and Greenville experiment fields, respectively, yields of corn, wheat, and hay were generally maintained or increased on superphosphate, rock phosphate, and rock phosphate residual plots, but decreased on superphosphate residual plots. Initial availability of rock phosphate tended to be lower than that of concentrated superphosphate.
Effect of Nitrogen, Sulfur, and Lime on Utilization of Rock Phosphate by Alfalfa1
Authors: Nichols J. D. , Phibbs G. M. , Reed L. W. 
Published: July 2010

SynopsisNitrogen and sulfur fertilization did not appreciably affect the uptake of phosphorus by alfalfa from rock phosphate. Alfalfa yield increases due to rock phosphate and superphosphate were not significantly different on unlimed soil. But, on limed soil superphosphate was significantly better than rock phosphate.
Rate, Source, Time, and Method of Applying Phosphates for Alfalfa and Legume‐Grass Hay and Pasture1
Authors: Terman G. L. , Doll E. C. , Lutz J. A. 
Published: July 2010

SynopsisForage yields were higher the first year of harvest after heavy initial broadcast applications of P than after smaller broadcast or topdressed applications. In following years, yields after the initial application only became progressively poorer, as compared to yields after smaller annual topdressings. Time of application affected yields much more than method of application or source of P.
Nicotine and Sugar Contents of Mammoth Flue‐Cured Tobacco Varieties1
Authors: Mann T. J. , Matzinger D. F. , Weybrew J. A. 
Published: July 2010

SynopsisThe nicotine contents of the leaves of the last four primings (harvests) from mammoth selections of flue‐cured tobacco were much lower than those of leaves of comparable stalk positions from standard varieties. There was little evidence of a marked dilution of reducing sugars in the cured leaves of the mammoth selections.