bluuebunny/crossref_metadata_2025_split huggingface dataset:
General vs. Specific Combining Ability in Alfalfa for Seedling Vigor and Fall Growth Habit in the Year of Establishment1
Authors: Carnahan H. L. , Hovin A. W. , Graumann H. O. , Kehr W. R. , Davis R. L. , Elling L. J. , Hanson C. H. 
Published: July 2010

SynopsisSeedling vigor and fall growth habit of the 91 diallel crosses among 14 alfalfa clones were scored in 3 and 4 states, respectively. Estimated, variance components for general (by far the largest component) and specific combining ability and the interaction of these with locations were all highly significant for both characters. Clones differed in their contributions to both additive and nonadditive genetic variances. The two characters were highly correlated (range +0.82 to 0.93), and interlocation correlations for each character were likewise high.
Effect of Plant Spacing, Fertility, and Irrigation Managements on Grain Sorghum Production1
Authors: Grimes D. W. , Musick J. T. 
Published: July 2010

SynopsisPopulations of 100,000 plants per acre produced highest grain yields. Increased row width reduced yields significantly as expressed by the regression Ŷ = 117.11 − 0.72X, where Y is in bushels per acre and ✕ is inches. A significant interaction was found between plant spacing and irrigation water management but not between plant spacing and fertility level. Seasonal moisture use or efficiency was not affected significantly by plant spacing.
The Effect of Soil Sterilants on the Wind Erodibility of Pullman Silty Clay Loam1
Authors: Wiese A. F. , Rea H. E. 
Published: July 2010

SynopsisSterilizing Pullman silty day loam for perennial weed eradication may create a wind erosion hazard for about 2 years. Soil treated with 3‐p‐chlorophenyl‐l,l‐dimethyl urea (monuron) was more susceptible to wind erosion than soil treated with anhydrous borax, a 75% sodium borate plus 25% sodium chlorate mixture, or sodium chlorate. Undisturbed monurontreated soil was more susceptible to wind erosion than monuron soil treatments which were subsequently sweep tilled and planted to sorghum.
Trends of Cold Resistance and Chemical Changes Over Winter in the Roots and Crowns of Alfalfa and Medium Red Clover. II. Changes in Certain Mineral Constituents1
Authors: Jung G. A. , Smith Dale 
Published: July 2010

SynopsisThe contents of K, P, Mg, and Ca were higher in the crowns than in the roots of both legumes, and generally were higher in red clover tissue. The greatest changes from fall to spring in content of each mineral occurred in the crowns. It was not clearly evident whether certain of the minerals were involved in the hardening process or not.
Determining Crop Yield Probabilities on Several Soil Types in the Great Plains1
Authors: Newhall Franklin , Swanson Dwight W. , Army Thomas J. , Johnson Wendell C. 
Published: July 2010

SynopsisAn appropriate statistical distribution for yields of wheat and sorghum at USDA and State stations appears to be a combination of the zeros and a gamma‐distributed, nonzero variable. Using a relatively new method of fitting the gamma distribution, continuous curves of probable yield for predictive purposes are developed for a number of locations.
Effect of Rate and Method of Planting on Several Plant Characters and Yield of Irrigated Corn1
Authors: Colville W. L. , McGill D. P. 
Published: July 2010

SynopsisOptimum yields were obtained from 16,000 to 24,000 plants per acre. Yields of drilled corn were superior to both hill dropped and checked methods of planting. Yield increases due to drilled as compared to hilled corn ranged from 22.4 to 9.8 bushels per acre. Hill‐dropped grain yields were intermediate to the other methods. Lodging and broken stalks increased with increased populations.
Theoretical Carbohydrates Requirement for Alfalfa Silage Production1
Authors: Smith Lawrence H. 
Published: July 2010

SynopsisApproximately 0.13% carbohydrate is required for ensilage production, assuming no buffering action. Buffer systems between inorganic ions and organic acids produced by fermentation increase this requirement to 6 or 7%. The availability of these ions is reduced by wilting of the crop.
Growth and Persistence of Several Varieties of Red Clover at Various Temperature and Moisture Levels1
Authors: Kendall W. A. , Stroube W. H. , Taylor N. L. 
Published: July 2010

SynopsisThe size of red clover plants which grew under laboratory conditions was not directly correlated with persistence of plants of the same variety in the field. The smallest plants obtained in the controlled environment were of the most persistent variety. The varieties did not differ significantly when the plants were subjected to a frequent‐clipping treatment or prolonged incubation in a dark chamber.
Potassium Uptake by Orchardgrass as Affected by Time, Frequency and Rate of Potassium Fertilization1
Authors: Robinson R. R. , Rhykerd C. L. , Gross C. F. 
Published: July 2010

SynopsisFall or spring applications of K fertilizer to orchardgrass resulted in herbage that was high in K in the spring but low in late summer and fall. An annual summer application of K greatly reduced the trend toward luxury consumption in the spring and K starvation in the fall. Calculated K recovery in the herbage plus residual exchangeable soil K accounted for all of the applied K.
Zinc Deficiency and Iron Chlorosis Dependent on the Plant Species and Nutrient‐Element Balance in Tulare Clay
Authors: Brown J. C. , Tiffin L. O. 
Published: July 2010

SynopsisFourteen plant species were grown on Tulare clay: 7 developed zinc deficiency; 2 developed iron deficiency; and 5 had no deficiency. Added phosphate accentuated both zinc and iron deficiencies. Added zinc caused iron deficiency in corn and millet but in no other plants. Nutrient‐element balance is a critical factor in the management of Tulare clay.
Effect of a Rye Winter Cover Crop on Soil Fertility and on the Succeeding Sweet Corn Crop1
Authors: Morgan G. W. , Hanna W. J. 
Published: July 2010

SynopsisThe growth and N, P and K content of a rye winter cover crop were increased by fertilization. Plowing down the rye, fertilized or not, did not improve the NO3‐N and available P and K level of the soil, nor the yield and N, P, and K content of a succeeding sweet corn crop over soil without rye cover.
Root Production and Accumulation of Root Material on Fertilized Annual Range1
Authors: McKell Cyrus M. , Jones Milton B. , Perrier Eugene R. 
Published: July 2010

SynopsisRoot samples were obtained from 7 depth increments of 0 to 24 inches on variously fertilized annual range plots. Production of root material was greatest on N‐fertilized plots. There was no significant accumulation of roots at any particular depth in response to fertilizer.
Comparison of Pelleted Coastal Bermudagrass, and Two Mixed Rations for Animal Gains and Carcass Values1
Authors: Brooks O. L. , Beaty E. R. , McCreery R. A. 
Published: July 2010

SynopsisPelleted Coastal bermudagrass produced rapid steer gains of more than two pounds per day. A concentrate ration produced a similar rate of gain and carcasses with higher finish and dressing percent, and required about the same amount of feed per pound of gain. A third treatment consisting of 1/2 Coastal pellets and 1/2 concentrates produced the fastest gains and a dressing percent comparable to a higher concentrate ration. This treatment required less feed per pound of gain than either of the other two.
Use of 4‐Tert‐Butylpyrocatechol as a Fracturing Aid in Crusting Soils
Authors: Hemwall John B. , Scott Henry H. 
Published: July 2010

SynopsisBetween 150 to 250 ppm of the chemical in the seed row are sufficient to induce fracturing in most soils. The actual amount needed is a direct function of the base exchange capacity and CaCO3 content, and an inverse function of the organic matter content of the soil treated.
Saline Irrigation of Several Vegetable Crops at Various Growth Stages. II. Effect on Cation Composition of Crops and Soils1
Authors: Batchelder A. R. , Lunin J. , Gallatin M. H. 
Published: July 2010

SynopsisThe cation composition of the plant was dependent on the equilibrium composition of the soil solution and the physiological characteristics of each crop, while the stage of growth at which salinization occurred had a lesser effect.
Cotton Growth and Yield as Affected by Taproot Diameter Within a Simulated Restraining Soil Layer1
Authors: Taylor H. M. , Burnett E. , Welch N. H. 
Published: July 2010

SynopsisRadial restraint of cotton taproots was studied using plastic clamps to simulate zones of high soil strength. All treatments affected plant vigor and appearance, plant height, stem diameter, and lint cotton yield. A root diameter of about 0.65 centimeter was necessary to bring plants to full maturity.
Availability of Nitrogen Contained in Certain Condensation Products of Reaction of Urea with Formaldehyde1
Authors: Long F. Leslie , Volk G. M. 
Published: July 2010

SynopsisNitrogen uptake distribution from sources containing up to 62% of the N as water‐insoluble from ureaform was not appreciably improved over watersoluble sources of N. More favorable N uptake distribution was obtained when the water‐insoluble N was used alone, especially a product made with U/F mole ratio of 1.50, when applied at 1,000 pounds N per acre. Total yield was approximately doubled and total N recovery tripled as compared to a 100‐pound application of soluble N.
Reactions of Seven Alfalfa Varieties Under Simulated Moisture Stresses in the Seedling Stage1
Authors: Younis M. A. , Stickler F. C. , Sorensen E. L. 
Published: July 2010

SynopsisAbility to germinate under moisture tension was not related to ability to harden under tension. Significant differences among varieties in uptake of N, P, and K under moisture stress were noted, but they were not related to relative hardiness. Evidence of correlation of relative hardiness in embryo, seedling, and youngplant stages of development was found. Gibberellic acid stimulated seedling growth more at higher than at lower moisture tensions.
Effect of Nitrogen, Phosphorus and Potassium Fertilizer on the Economics of Producing Bluegrass Forage1
Authors: Walker William M. , Pesek John , Heady Earl O. 
Published: July 2010

SynopsisResponses of a native bluegrass sod to topdressed applications of N, P and K fertilizer rates varying jointly were used to fit a forage yield equation and to calculate iso‐yield curves and least cost fertilizer ratios. It was then shown how these data and equations may be used in determining levels of fertilizer for optimum beef production and estimating the price of beef needed to justify fertilization of this type of sod.
Digestibility of Fall Grown Kentucky 31 Fescue
Authors: Brown R. H. , Blaser R. E. , Fontenot J. P. 
Published: July 2010

SynopsisDry matter digestibility did not decrease with advancing age of the plants in the fall of 1960 and 1961; in 1960, there was a significant increase with age. Protein content and apparent digestibility of protein decreased as fescue aged in both years. The reverse was true for the N. F. E. fraction. Digestibility of crude fiber and cellulose decreased with age in 1960 but was unaffected by age of grass in 1961.
A Collaborative Study of the Ethylenediaminetetraacetate (EDTA) Method for Rating Agricultural Limestones. I. Reproductibility of Ratings and Correlations with Chemical and Physical Characteristics of Materials1
Authors: Hunter Albert S. , Kinney Harlin , Whittaker Colin W. , Axley J. H. , Peech Michael , Steckel Joseph E. 
Published: July 2010

SynopsisThe reactivities of 39 liming materials as rated by 12 laboratories indicate that the EDTA procedure holds considerable promise as a means of obtaining a simple numerical rating of limestone reactivity.
Assessing the Utility of Pan Evaporation for Controlling Irrigation of Sugar Cane in Hawaii1
Authors: Robinson F. E. , Campbell R. B. , Chang Jen‐hu 
Published: July 2010

SynopsisThe timing of irrigation applications was determined with reference to the net evaporation from a U.S. Weather Bureau pan. Maximum sugar yields were obtained when 2.5 inches of irrigation water were applied after 2.9 inches had evaporated from the pan. When adjusted to a constant population, the differences in yields of 6 irrigation‐interval treatments reflected differences in stalk length. Decrease in stalk length resulted from soil moisture tensions which exceeded 2 bars.
Some Observations on the Contribution of an Inch of Seeding‐Time Soil Moisture to Wheat Yield in the Great Plains1
Authors: Johnson Wendell C. 
Published: July 2010

SynopsisThe average contribution to yield of an inch increment of stored moisture was estimated at 2.44 and 2.74 bushels per acre for spring and winter wheat, respectively. Allowing for side effects of management practice other than soil moisture reduced the estimate for early‐plowed continuous spring wheat and fallowed spring wheat to 1.40 and 1.48 bushels per acre, respectively. The corresponding estimates for winter wheat were 2.48 and 1.99 bushels per acre.
Salt Tolerance of Safflower1
Authors: Francois L. E. , Bernstein Leon 
Published: July 2010

SynopsisYields of safflower grown in artificially salini/ed plots were reduced by 10% at 7 millimhos per centimeter (ECe) and by 20 to 25% at 11 millimhos per centimeter (ECe). Salt tolerance during germination is only half that at later stages of growth.
Influence of Management Practices on Seed‐Set, Seed Yield, Seed Weight, Germination, and Insects of Black Gramagrass, Bouteloua eriopoda (Torr.) Torr.1
Authors: Wright Neal 
Published: July 2010

SynopsisResults of the studies suggested the desirability of combining treatments for highest seed yield. Growth should be initiated on August 1 with 100 pounds per acre of nitrogen fertilizer applied to obtain highest seed‐set, germination percent, and seed weight.
Technique for Rapid Analyses of Corn Leaves for Eleven Elements1
Authors: Baker Dale E. , Gorsline G. W. , Smith C. B. , Thomas W. I. , Grube W. E. , Ragland J. L. 
Published: July 2010

SynopsisAn investigation was conducted to develop methods for an over‐all analytical technique of corn leaf analysis. Samples were analyzed by use of a spectrometer for Sr, P, K, Ca, Mg, Mn, Cu, B, Al, Fe, and Zn. Computing equipment was used to speed and facilitate data conversion. Procedures for sampling, leaf washing, drying, grinding, mixing, ashing, and analysis were studied and modified, where necessary, to increase precision and accuracy with respect to all elements.
Modification of Alfalfa Root System by Severing the Tap Root1
Authors: Klebesadel L. J. 
Published: July 2010

SynopsisSevering 12‐week old Vernal alfalfa tap roots 5½ inches below the soil surface resulted in a significant increase in the number and total dry weight of lateral roots over 1 mm. in diameter on the upper 4 inches of tap root as counted when plants were 18 weeks old. Severing the tap root had no effect on dry weight of topgrowth or upper tap root nor on diameter of tap root. The significance of these results to studies of frost heaving of plants is discussed.
Effect of Seeding Rate and Row Width on Yield and on Components of Yield in Winter Barley1
Authors: Middleton G. K. , Hebert T. T. , Murphy C. F. 
Published: July 2010

SynopsisWhen planted under near optimum conditions at rates varying from 3 pecks to 6 bushels per acre, 3 varieties of barley showed no significant difference in yield. Decreasing the seeding rate decreased the number of fertile heads per unit area but increased the number of seed per head. The influence on weight of individual seed and weight per bushel were less marked.
Water Losses From Soil and Rubidium Uptake by Adventitious Roots of Sunflower as Related to the Water Content of Soil1
Authors: Stevenson D. S. , Boersma L. 
Published: July 2010

SynopsisWater losses were closely related to the amount of root growth, which in turn was increased almost linearly by increased water contents. Rubidium uptake was not consistently affected by the initial water contents to which the roots were exposed, nor was it related to the amount of root growth. There was some evidence that the uptake of the rubidium may be linked to the active transport of water from the roots to the plants.
Influence of Topping and Side Pruning on Cotton Yield and Other Characteristics1
Authors: Bennett O. L. , Ashley D. A. , Doss B. D. , Scarsbrook C. E. 
Published: July 2010

SynopsisYields were increased and plant lodging was almost eliminated by topping or by using a combination of topping and pruning of side branches of cotton plants. Boll rot was reduced by altering plant geometry. The lint percentage, fiber length, and micronaire were increased by topping plants at 48 inches.
Performance of Tillage Implements in a Stubble Mulch System: III. Effects of Tillage Sequences on Residues, Soil Cloddiness, Weed Control, and Wheat Yield1
Authors: Fenster C. R. , Woodruff N. P. , Chepil W. S. , Siddoway F. H. 
Published: July 2010

SynopsisThe amount and height of crop residue influenced the effectiveness of tillage sequences to conserve residue on the soil surface. Tillage sequences produced no noticeable effect on soil cloddiness at the end of season. Better weed control was obtained with tillage sequences including one one‐way disking. Tillage sequences seem to influence wheat yields more in dry years than wet years.
Foliar, Floral, and Root Absorption of Sr90 by Crops1
Authors: Evans E. J. , Dekker A. J. 
Published: July 2010

SynopsisIn a field experiment carried out to determine the relative Sr90 content of wheat, oats, alfalfa, and timothy grown in the open compared with that of the same crops grown under clear plastic tents, absorption of Sr90 for the uncovered crops exceeded that of the covered for all crops. The Sr90 content of flour and bran milled from wheat grown in the open was considerably greater than that of the same fractions milled from wheat which was covered at the flowering stage. However, the ratios of Sr90 in the flour to that in the bran were similar in the two situations.
Influence of Anions on the Uptake of Calcium and Magnesium by Plants and on Calcium and Magnesium Movement in Soils1
Authors: Gillingham J. T. , Page N. R. 
Published: July 2010

SynopsisThe influence of Cl, NO3, SO4, and PO4 on the uptake of Ca and Mg by sunflowers were studied under greenhouse conditions. Calcium uptake was increased only by Cl and NO3. Magnesium uptake was increased by all anions except Cl. In a lysimeter experiment, the vertical movement of Ca and Mg through the profile and into the leachate by the various anions was in the order of their solubility: NO3 > Cl > SO4 > PO4.
Longevity of Soil Reaction Effects Following Lime and Alum Additions1
Authors: Hutcheson T. B. , Freeman J. F. 
Published: July 2010

SynopsisEffects of lime and aluminum sulfate on pH were quite pronounced 6 weeks after application, but had diminished in 12 months and changed little during an additional 24‐month period. Three years after applications, little effect was evident on pH, exchangeable acidity, Al, Ca, or Mg below 8 inches. Exchangeable Al levels were less than 1/100th of those actually applied, indicating that hydrolysis and precipitation of Al as some species of aluminum hydroxide had occurred.
Effects of Subsoiling and Deep Placement of Fertilizer on a Coastal Plain Soil and Vegetables1
Authors: Brill G. D. , Alderfer R. B. , Hanna W. J. 
Published: July 2010

SynopsisSubsoiling to 18 inches with and without deep placement of lime, phosphorus, and potassium on a Collington sandy loam soil did not produce significant yield increases of cabbage, tomatoes, and sweet corn over a 7‐year period even in dry years. Residual effects of subsoiling significantly increased water movement into this soil 3 years after the last deep tillage operation.
Use of In Vitro Rumen Fermentation Techniques for Estimating Forage Digestibility and Intake1
Authors: Barnes R. F. 
Published: July 2010

SynopsisRealistic estimates of digestibility can be obtained by in vitro techniques where forages are compared relative to each other in the same trial, however, a standard method remains to be established before reliable comparisons of in vitro results can be made between laboratories. The estimation of voluntary intake per se does not appear possible, but the prediction of the digestible energy potential of a forage, defined as the product of energy intake and energy digestibility, has shown considerable promise.
Sulphur Dioxide Fumigation of Cotton and Its Effect on Fiber Quality1
Authors: Davis C. R. , Morgan G. W. , Howell D. R. 
Published: July 2010

SynopsisLight to moderate defoliation of cotton plants by sulphur dioxide had no detrimental effect upon fiber grade, staple length, or ginning percentage. A significant increase in grade and staple length due to fumigation was noted on the first picking. There was no significant difference on the second and third pickings.
Effects of Clipping and Nitrogen Fertilization on Seed Production of Creeping Red Fescue
Authors: Sharp W. Curtis 
Published: July 2010

SynopsisSeed production of creeping red fescue (Festuca rubra L.) can be improved by limiting nitrogen fertilization until slight deficiencies appear, and by reducing vegetative growth to three inches after each harvest. A combination of these is necessary to reduce sod binding, a factor in poor yields. Restricting vegetative growth also reduces lodging. Limiting lateral spread does not improve seed yield.
Effect of Rate of Ammonium Nitrate Fertilization and Time of Cutting Upon Selected Chemical Components and the in vitro Rumen Digestion of Bermudagrass Forage1
Authors: Webster J. E. , Hogan J. W. , Elder W. C. 
Published: July 2010

SynopsisHigh applications of nitrogen reduced holocellulose by about 13% and hemicellulose by over 20%. In vitro digestibility was not appreciably affected by nitrogen fertilization. Seasonal changes were noted in all tests. In vitro digestibility was highest in the spring and dropped considerably in mid‐summer. Lignin percentages were highest when digestibility was lowest. The lowered summer digestibility and higher lignin percentages are offered as two reasons why cattle fail to do well when pastured on bermudagrass in the summer.
Some Effects of Water Temperature on the Growth and Development of Rice Seedlings1
Authors: Herath Walter , Ormrod Douglas P. 
Published: July 2010

SynopsisGenerally, shoot lengths and weights, root lengths and weights, leaf lamina and sheath lengths, and stomata number were greater at higher temperatures. Stomata were larger and utilization of seed reserves was slower at lower temperatures. Whether plants were flooded or not flooded, or whether continuous or changing temperatures were used, plants grew better at higher temperatures than lower temperatures. California varieties generally grew more rapidly than Texas varieties at all temperatures.
Influence of Molybdenum Content of Soybean Seed and Other Factors Associated With Seed Source on Progeny Response to Applied Molybdenum1
Authors: Harris H. B. , Parker M. B. , Johnson B. J. 
Published: July 2010

Synopsis‘Hill’ soybean seed obtained from 6 states varied in Mo content from 0.6 to 22.4 ppm. Seed from all sources except Texas contained less than 2.6 ppm and the progeny responded to Mo. Seed grown at Lubbock, Texas, contained 22.4 ppm Mo and progeny from this source did not respond to Mo.High temperatures during the last 45 days of seed maturation of Hill soybeans were associated with poor seedling vigor in the progeny that persisted throughout the growing period and were reflected in bean yield.
Nitrogen, Phosphorus and Potassium Uptake by Lowland Rice and Its Relation to Yields on Some Nigerian Alluvial Soil1
Authors: Bredero Th. J. 
Published: July 2010

SynopsisThe linear part of the yield/N uptake curves plotted for two different soils indicates that N is taken up by rice independently of the pattern and rate of N applications as long as sufficient N is available for uptake by the plant. N uptake determines P and K uptake as long as P and K are sufficiently available in the soil. Surplus applications of P build up considerable soil reserves of total and available P which, above a critical level, become detrimental for yields.