bluuebunny/crossref_metadata_2025_split huggingface dataset:
Water Use from Plastic‐covered and Uncovered Corn Plots1
Authors: Shaw R. H. 
Published: July 2010

SynopsisSoil moisture loss from plots where the ground surface was covered with plastic was 46% of the total loss from an uncovered plot. When intercepted water was included as water loss on the plastic‐covered plot, the loss from the plastic‐covered plot averaged 90% of that from an uncovered plot at low levels of radiation, and 72% at high levels of radiation.
Response of Winter Wheat to Phosphate as Affected by Soil and Climatic Factors1
Authors: Eck Harold V. , Stewart Bobby A. 
Published: July 2010

SynopsisClimatic and agronomic variables are shown to be more closely related to yield response of winter wheat to phosphorus than is NaHCO3‐extractable P2O5. It appears that soil tests alone, or in combination with climatic and agronomic variables, are presently of limited value for predicting yield response of dryland winter wheat to phosphorus in the Southern Great Plains.
Simplified Procedures for Radioassay and Autoradiography of Plant Materials1
Authors: Inselberg Edgar 
Published: July 2010

SynopsisCompared with the conventional end window Geiger tube, the jacketed counter for the radioassay of liquids had higher precision and counting efficiency, eliminated the need for pipetting and evaporating samples prior to radioassay, and was suitable for counting digested plant samples.The autoradiographic technique was considerably simplified through the use of individually packed film, thus eliminating the need for light‐proof equipment. Autoradiograms of corn, soybeans, tobacco, and tomato plants are presented.
Grain Yields, Evapotranspiration, and Water Use Efficiency of Grain Sorghum under Different Cultural Practices1
Authors: Brown Paul L. , Shrader W. D. 
Published: July 2010

SynopsisDryland grain sorghums showed a marked response to plant populations, row spacings, and stored soil moisture under drouth conditions. Under extreme drouth conditions in 1955 there was an inverse relationship between forage and grain production. Water use efficiency for grain production increased as the amount of stored moisture increased.
A Legume for Native Flood Meadows: II. Phosphorus Fertilizer Requirements for Maintaining Stands of White‐Tip Clover (Trifolium variegatum)1
Authors: Cooper C. S. , Hunter A. S. 
Published: July 2010

SynopsisAnnual applications of 40 pounds of P2O5 per acre resulted in nearly maximum yields of mixed clover‐rush‐sedge hay. Residual phosphorus was adequate for plant growth only if 120 pounds of P2O5 per acre or more had been applied in the previous year. Nearly maximum yields were obtained when the phosphorus content of hay was between 0.20 and 0.23%.
Influence of Exchangeable K and Na in the Soil on Growth and Chemical Composition of Lovell Peach Seedlings and Other Crops1
Authors: Martin J. P. , Jones W. W. , Ervin J. O. 
Published: July 2010

SynopsisIn Yolo loam and Hanford sandy loam, peach seedlings, onions, carrots, radishes, vetch, and alfalfa tolerated exchangeable K levels equal to 22% or more of exchange capacity. Thirty‐six percent K reduced growth or caused leaf injury of all species except vetch and alfalfa. Peach seedlings were relatively sensitive and vetch relatively tolerant to high exchangeable Na. About 4% leaf R and trace percentages of Na reduced peach seedling growth.
Chromosome Pairing in Hybrids Between Tetraploid Medicago sativa L. and Diploid Medicago falcata L.1
Authors: Cleveland R. W. , Stanford E. H. 
Published: July 2010

SynopsisCytological and limited genetic studies of tetraploid hybrids, triploid hybrids, and parental species indicated that gross homology was very high between M. sativa and M. falcata chromosomes. A chromosome pairing behavior deviating from that expected for a true autotetraploid appeared to be in existence in M. sativa.
Effect of Gibberellin, Sodium Hypochlorite, Light, and Planting Depth on Germination of Guayule Seed1
Authors: Hammond Bayard L. 
Published: July 2010

SynopsisBoth embryo and inner seedcoat dormancy of freshly harvested guayule achenes were completely broken by continuous exposure to daylight during a germination period of 3 weeks. Gibberellin substituted for light in completely breaking both embryo and inner seedcoat dormancy. Reducing the depth of immediate sand covers increased germination of untreated and hypo‐chlorite‐treated achenes, mainly because of light transmission through the sand. Gibberellin increased emergence of nondormant seed under a soil cover.
Regression of Milk Production on Forage Production and Forage Consumption1
Authors: Austenson H. M. , Murdock F. R. , Hodgson A. S. , Russel Thomas S. 
Published: July 2010

SynopsisMilk yield was correlated with forage yield and consumption, when expressed on a per acre basis, and regression equations are given to show this relation. Milk production per cow was of greater economic significance than milk production per acre. Returns were higher for orchardgrass plus Ladino clover than for orchardgrass plus N fertilization.
Studies on Free Amino Acids in the Spotted Alfalfa Aphid, Its Honeydew, and Several Alfalfa Selections, in Relation to Aphid Resistance1
Authors: Marble V. L. , Meldeen John C. , Murray Hazel C. , Zscheile F. P. 
Published: July 2010

SynopsisSeveral trends were revealed, possibly related to resistance. Large differences between the contents of β‐alanine and ethanolamine were found in aphids on resistant and susceptible alfalfa. Ethanolamine and pipecolic acid were identified as new constituents of alfalfa aphid honeydew. Environmental effects were significant.
Effect of 1,2,4,5‐Tetrachlorobenzene on the Germination and Seedling Vigor of Barley, Oats, and Wheat1
Authors: Ameen O. A. , Day A. D. , Hamilton K. C. 
Published: July 2010

SynopsisThe effects were most detrimental in sandy soil. As the soil type changed from sand, to sandy loam, to clay loam, to clay, the damage decreased. With each increase in the interval between soil treatment and planting there was a general increase in germination and seedling vigor.
Inheritance of Reaction to Septoria avenae in Oats1
Authors: Hooker A. L. 
Published: July 2010

SynopsisIn nine populations involving F2, F3, and F4 generations from several susceptible ✕ resistant crosses variation in segregating populations was continuous with distributions approaching normality. Heritability estimates, calculated by several methods, were high. The data indicate that Septoria reaction should be treated as a quantitative character in oat breeding.
Genetic Variability in an Advanced Generation of a Cross of Two Open‐Pollinated Varieties of Corn1
Authors: Moll R. H. , Robinson H. F. , Cockerham C. Clark 
Published: July 2010

SynopsisThe additive genetic variance for yield of grain in the F3 generation appears to be greater than the additive genetic variance in either parental variety, and the mean performance of the F3 is slightly greater than the average of the two varieties.
Performance of Inbred Lines, Polycross Progenies, and Synthetics of Tall Fescue Selected for Improved Palatability1
Authors: Buckner Robert C. 
Published: July 2010

SynopsisGenerally, the polycross progenies and synthetics were significantly better grazed than commercial varieties, compared favorably with them in seedling vigor, and approached commercial and naturalized varieties in yield.
Dry Matter Yield and Botanical Composition of an Orchardgrass‐Ladino White Clover Mixture Under Clipping and Grazing Conditions1
Authors: Taylor T. H. , Washko J. B. , Blaser R. E. 
Published: July 2010

SynopsisHarvested herbage yields were not statistically different under clipping versus grazing conditions. Rapid shifts in botanical composition occurred from season to season that could not be attributed to grazing or clipping managements. However, within a season Ladino clover did better under clipping than under grazing conditions. Orchardgrass persisted better on the grazed plots. Plant responses within a season are attributed to animal preference of clover over grass. Ladino was very susceptible to injury from drouth and heaving.
The Prediction of the Relative Yields of Different Oat Varieties Based on Known Environmental Variables1
Authors: Grafius J. E. , Kiesling R. L. 
Published: July 2010

SynopsisThe development of a technique or method of estimating the behavior of oat varieties under different environments could replace much of the laborious work now being done in running over‐state trials. The proposed vector analysis appears to offer a feasible solution to the problem.
Field Studies of Internal Moisture Relations of the Corn Plant1
Authors: Namken L. N. , Lemon E. R. 
Published: July 2010

SynopsisThe results of this study agree with the hypothesis that the electrical conductivity of corn stem tissue is primarily related to hydration of the cell wall. Plant stem resistance measurements taken before 8:00 a.m. show a carry‐over effect of moisture stress experienced by the plant during the preceding 24‐hour period or longer. Relative turgidity measurements of corn leaves taken at the same time did not show a marked carry‐over effect of internal moisture stress.
Corn‐Foxtail Competition Under Various Production Conditions1
Authors: Nieto H. Jorge , Staniforth David W. 
Published: July 2010

SynopsisCorn yield reductions resulting from mature foxtail infestations averaged 20, 14, and 10 bushels per acre, respectively, with applications of 0, 70, and 140 pounds of elemental nitrogen per acre. Growth and yield of foxtail were depressed with higher corn plant populations. The roles of soil nitrogen, soil moisture, and corn plant populations are discussed. Possible effects of uncontrolled environmental and biological factors are recognized.
Some Factors That Affect Nitrate Accumulation in Forages1
Authors: Crawford R. F. , Kennedy W. K. , Johnson W. C. 
Published: July 2010

SynopsisThe level of nitrogen fertilization, the species of forage, the part of the plant, the stage of maturity, and the light intensity all affected greatly the concentration of nitrate in forages. The time of nitrogen fertilization, the kind of nitrogen carrier, the placement of nitrogen fertilizer, and the addition of other plant nutrients had only small effect on the concentration of nitrate in forages.
Effect of Nitrogen Fertilizer and Soil Type on the Amino Acid Content of Corn Grain1
Authors: MacGregor J. M. , Taskovitch L. T. , Martin W. P. 
Published: July 2010

SynopsisFertilization substantially increased the yield of corn grain, crude protein, and total amino acids, but the concentrations of all amino acids did not progressively increase with increased concentrations of crude protein.
Influence of Soil Moisture Potential and Evaporative Demand on the Actual Evapotranspiration from an Alfalfa Field1
Authors: Bahrani Bozorg , Taylor Sterling A. 
Published: July 2010

SynopsisThe ratio of actual to potential evapotranspiration decreased curvilinearly with the soil matric potential. Most of the reduction took place at high potentials (lower matric suctions). Daily net radiation decreased following alfalfa hay harvest and increased again following irrigation.
Yield, Moisture, and Protein Composition of Spring Oats Cut for Silage at Different Stages of Maturity1
Authors: Gardner F. P. , Wiggans S. C. 
Published: July 2010

SynopsisThe data from these experiments suggest early to mid‐dough stage as optimum for harvesting spring oats as silage. Garry, a tall and late variety, generally produced more forage than mid‐season varieties. Oat variety or stage of harvest for silage had no effect on alfalfa hay yield the year following.
The Effect of Height and Frequency of Cutting on the Yield and Botanical Composition of Smooth Bromegrass and Orchardgrass Mixture1
Authors: Burger A. W. , Jackobs J. A. , Hittle C. N. 
Published: July 2010

SynopsisSmooth bromegrass‐legume mixtures produced more dry matter per season than orchardgrasslegume mixtures. Alfalfa‐grass mixtures produced higher yields than Ladino clover‐grass mixtures. Orchardgrass mixtures produced more herbage at the late compared to the early harvests and contained lower percentages of legume than the smooth bromegrass mixtures. Yields of the various mixtures were greater and less, respectively, at the hay and pasture frequencies than at the silage frequency of cutting.
Effect of pH and Nitrogen Source on the Ability of Corn and Soybean to Obtain Iron Chelated with Ethylenediamine di(o‐Hydroxyphenylacetate)1
Authors: Bhan K. C. , Wallace A. , Krohn E. J. 
Published: July 2010

SynopsisHawkeye and PI 54619‐5‐1 soybeans produced more dry matter in nutrient solutions at pH 7 and 8 than at pH 4. The effect was reversed with Pioneer 352 corn but this was complicated with Fe deficiency. The three plants tended to absorb less Fe as the pH was increased. The Fe was chelated with EDDHA which forms an Fe chelate extremely stable at high pH.
Corn Growth and Composition in Relation to Soil Fertility: I. Growth of Different Plant Parts and Relation between Leaf Weight and Grain Yield1
Authors: Hanway J. J. 
Published: July 2010

SynopsisThe rate of dry matter accumulation in corn plants was linear over most of the growing season after leaf growth was nearly complete. Differences in soil fertility resulted in different rates of dry matter accumulation, but influenced all plant parts similarly. The yield of total dry matter and of grain in plants from different fertility levels was proportional to the weight of leaves even though the chemical composition of the leaves was extremely variable.
Corn Growth and Composition in Relation to Soil Fertility: II. Uptake of N, P, and K and Their Distribution in Different Plant Parts during the Growing Season1
Authors: Hanway J. J. 
Published: July 2010

SynopsisDifferences in soil fertility influenced the amounts of N, P, and K taken up by corn plants, but did not markedly change the seasonal pattern of uptake and distribution of these elements in the plants. Large proportions of the N and P and a small proportion of the K were translocated from other plant parts to the grain. Late in the season K was lost from the leaves to the stalks.
Influence of Time and Rate of Nitrogen Application on Production and Botanical Composition of Forage1
Authors: Alexander C. W. , McCloud D. E. 
Published: July 2010

SynopsisOrchardgrass‐alfalfa produced 2.5 tons per acre each year consisting of 35% alfalfa regardless of nitrogen level. Ladino clover in mixture 1 disappeared by the end of the second year and the remaining tall rescue or orchardgrass responded as pure‐grass stands. The grasses yielded 1.0 to 2.9 tons per acre with 0 to 360 pounds of nitrogen per acre. Orchardgrass stands were markedly thinned with 240 pounds or more of nitrogen.
Influence of Date of Seeding and Nitrogen Rates on Winter Wheat Varieties in Eastern Oregon1
Authors: Beutler L. K. , Foote W. H. 
Published: July 2010

SynopsisSome semidwarf winter wheat selections have a much earlier optimum seeding date than do currently grown varieties as measured by grain and straw yields. This adaptation to earlier fall seeding dates also influenced differential responses by variety to rates of nitrogen fertilizer.
Effects of Management Practices on Yield and Composition of Three Grass‐Legume Mixtures
Authors: Hunt O. J. , Wagner R. E. 
Published: July 2010

SynopsisHeight of cut, frequency and date of first cutting had marked influence on yields. Cutting to 2 inches produced more forage with a greater percentage of clover than cutting to 4 inches. Less frequent cutting produced more than frequent cutting for the first two seasons but decreased the clover content and yield in the third year. Less frequent cutting at a delayed first cutting date maintained good yields of smooth bromegrass.
Effect of 3‐Indolebutyric Acid on Shoot Development and Rooting of Several Bermudagrasses1
Authors: Hoveland C. S. 
Published: July 2010

SynopsisShoot and root development of Coastal bermuda rhizomes was superior to that of Suwanee bermuda. IBA (3‐indolebutyric acid) improved shoot development and rooting of Suwanee. IBA increased rooting of Coastal but had no effect on shoot development of Coastal or Midland bermuda.
Germination of Grain Sorghum as Affected by Freezing Temperatures1
Authors: Gritton Earl T. , Atkins R. E. 
Published: July 2010

SynopsisThe effects of several freezing temperature durations on viability of sorghum seed of varying moisture content were evaluated using maturing seed of four sorghum genotypes. As moisture content of the grain increased and as temperature decreased, progressively shorter durations were necessary to effect reduced seed viability. Durations of as little as 1/2 to 1 hour at 20° and 14° F. caused marked loss of viability in high moisture grain.
Effect of Sorghum Maturity at Harvest and Variety on Certain Chemical Constituents in Sorghum Silages1
Authors: Owen F. G. , Webster O. J. 
Published: July 2010

SynopsisAdvancing maturity of sorghums from the bloom to the hard‐seed stage resulted in significant decreases in moisture, crude protein, and crude fiber but in an increase in nitrogen‐free extract in sorghum silages. Hybrids were higher in crude protein and crude fiber but lower in nitrogen‐free extract than standard varieties. Sterile hybrids were higher in moisture and crude fiber and lower in nitrogen‐free extract than open‐pollinated hybrids.
Effect of Harvest Dates on Forage Sorghum Yields, Percentages of Dry Matter, Protein, and Soluble Solids1
Authors: Webster O. J. 
Published: July 2010

SynopsisThe weekly accumulative yield increases following first bloom were: 27, 41, 59, 72, 76, 97, and 104%. Yields of sterile hybrids were 10 to 15% less than those which set seed, but the stover was higher in protein and soluble solids (sugars).
Plant and Performance Characteristics of Semidwarf Winter Wheats Producing Most Efficiently in Eastern Washington1
Authors: Vogel O. A. , Allan R. E. , Peterson C. J. 
Published: July 2010

SynopsisThe most efficient semidwarf winter wheats for eastern Washington have strikingly similar head, leaf, culm, and growth characteristics. General plant and growth patterns of the most efficient selections are best represented by CI 13438. Likewise the best semidwarf variety suitable for commercial production is represented by Gaines. Comparative performances in varietal trials show distinctly greater efficiency in production of semidwarf over standard‐height commercial varieties in eastern Washington.
Effects of Population Levels on Yield and Maturity of Maize Hybrids Grown on the Northern Great Plains1
Authors: Termunde Darrold E. , Shank D. B. , Dirks V. A. 
Published: July 2010

SynopsisPlant production reached a maximum at 12,000 to 16,000 plants per acre in eastern South Dakota. Grain production reached a maximum at the same level and fell off drastically if population levels exceeded this optimum. Under conditions of drouth, maximum yields may be associated with very low population levels.
What Is Being Taught in Introductory Soil Science Laboratories?1
Authors: Sabey B. R. 
Published: July 2010

SynopsisThe following sequence of 10 most important topics, with the number of schools teaching each topic, was stressed: texture—65, moisture—60, soil reaction (pH) and limestone—58, rocks and minerals—56, structure‐55, profile study‐54, classification and survey—54, soil testing—51, microorganisms and organic matter—50, and fertilizers—47. Almost two‐thirds of the instructors provided at least as many hours in the laboratory as in the lecture. General chemistry was the most common prerequisite for the introductory soil science courses.
Effect of Row Spacing and Nitrogen Fertilizer on Production of Irrigated Russian Wildrye (Elymus junceus Fisch.). II. Relative Crown and Root Development1
Authors: Lorenz Russell J. , Rogler George A. 
Published: July 2010

SynopsisRoot development under 3‐year‐old plots of irrigated Russian wildrye differed when grown at 9‐ and 36‐inch row spacings. Further study revealed a greater root weight per acre under rows 6 inches apart than under rows spaced 18 and 36 inches. Root concentration decreased with increased distance from the center of the row. Volume of roots increased with increasing N up to the 200‐pound rate, followed by a decrease at the 400‐pound rate.
Compatibility of 2‐Chloro‐6‐(Trichloromethyl) Pyridine with Medicago sativa L. Inoculated with Rhizobium meliloti1
Authors: McKell Cyrus M. , Derwyn R. , Whalley B. 
Published: July 2010

SynopsisGreenhouse tests indicated no reduction in the survival of Rhizobium meliloti on alfalfa seeds and in soil fertilized with ammonium sulfate treated with 2‐chloro‐6‐(trichloromethyl) pyridine. Reduction in seedling growth of alfalfa plants was severe at 20 ppm of 2‐chloro‐6‐(trichlorornethyl) pyridine and slight at 1 ppm. Other deleterious effects on alfalfa seedlings were changes in nodule morphology and deformation of root tips.
Influence of Soil Moisture on the Herbage of Two Legumes and Three Grasses as Related to Dry Matter Yields, Crude Protein, and Botanical Composition1
Authors: Van Riper G. E. 
Published: July 2010

SynopsisAlfalfa and alfalfa‐grass associations effectively utilized more soil moisture during a wet year followed by a dry year than birdsfoot trefoil and birdsfoot trefoil‐grass associations. In general, bromegrass used significantly more water than orchardgrass during a dry year.
Effect of Root Zone Temperature at Various Stages of the Growing Period on the Growth of Corn1
Authors: Knoll H. A. , Lathwell D. J. , Brady N. C. 
Published: July 2010

SynopsisRoot zone temperature of 15° C. for 15 days adversely affected dry matter production compared to a constant temperature of 20° C., while root zone temperature of 25° C. for 12 days stimulated dry matter production compared to 20° C. It was not possible, however, to show that there was a specific period at which root zone temperature was most critical in the early growth of corn.
Performance of Five Orchardgrass Varieties Under Different Nitrogen Treatments1
Authors: Dotzenko A. D. , Henderson K. E. 
Published: July 2010

SynopsisFive orchardgrass varieties from diverse areas of the United States were evaluated for forage yield, total N and P content, recovery of applied N and NO3 accumulation under 4 levels of N fertilization. Varieties showed marked increases in yield, total N and NO3 content as the rates of applied N fertilizer were increased, but showed lower P and N recovery percentages. Marked varietal differences were also found.
Ecological and Physiological Study of Echinochloa crusgalli (L.) Beauv. and the Response of Its Biotypes to Sodium 2,2‐dichloropropionate1
Authors: Roché Ben F. , Muzik T. J. 
Published: July 2010

SynopsisSeed production, variable germination requirements, and emergence from depths exceeding expectation make barnyardgrass a serious weed in the irrigated sections of the Northwest. Those factors, combined with the presence of biotypes differing in response to a herbicide (dalapon) partially explain its position among weed species.
Improved Soil Openers for the Establishment of Small‐Seeded Legumes in Sod1
Authors: Decker A. Morris , Retzer H. J. , Swain F. G. 
Published: July 2010

SynopsisTwo recently developed sod‐seeder openers have produced successful establishment of a small‐seeded legume (birdsfoot trefoil) in an old establshed bluegrass sward. Both were superior to the conventional opener which left only a narrow slit in the sod. The use of a presswheel improved establishment following the disk but not the wing opener. Granular heptachlor over the row at seeding resulted in improved stands one out of two years.
Leaf Temperature and Transpiration1
Authors: Gates David M. 
Published: July 2010

SynopsisThe mechanisms which contribute to the energy exchange for a leaf are described and a graphical solution to the heat transfer equation for a leaf is presented. The importance of transpiration for cooling a leaf is shown in quantitative form. The complete energy budget for a leaf of Querous macrocarpa was observed at various times of day including radiation, convection, transpiration, and leaf temperature. It is shown that good agreement is realized between the energy absorbed by the leaf and the energy consumed by dissipative mechanisms.