bluuebunny/crossref_metadata_2025_split huggingface dataset:
Some Effects of Shade upon Corn Hybrids Tolerant and Intolerant of Dense Planting
Authors: Stinson Harry T. , Moss Dale N. 
Published: July 2010

SynopsisSix corn hybrids tolerant and 5 hybrids intolerant of high populations were tested for their response to a shade environment under conditions of adequate soil moisture and fertility. In shade, the grain yield of the tolerant hybrids as a group was significantly higher than that of the intolerant hybrids. Ear barrenness contributed more to the differential yield response of the tolerant and intolerant hybrids than did reduction in ear weight.
A Comparison of Dehydrated Birdsfoot Trefoil and Alfalfa Meals as Constituents of a Poultry Mash1
Authors: Wood G. M. , Smith R. T. 
Published: July 2010

SynopsisDehydrated birdsfoot trefoil meal did not suppress the growth of chicks when included at a low level in a broiler‐starter mash whereas alfalfa at the same level did. A greater proportional growth suppression was obtained at a higher level for the birdsfoot trefoil than for the alfalfa. Analytical assays indicated chemical differences between the two meals.
Effectiveness of Selection Methods for Yield in Soybean Crosses1
Authors: Voigt R. L. , Weber C. R. 
Published: July 2010

SynopsisF5 lines selected by a form of early‐generation (F4) testing in 5 soybean crosses were superior yield to those selected by bulk and pedigree methods. The lines selected by the early‐generation method were similar in maturity and height and superior or equal in lodging resistance to those selected by the bulk and pedigree methods of breeding.
Abrasive Action of Windblown Soil on Plant Seedlings1
Authors: Lyles Leon , Woodruff N. P. 
Published: July 2010

SynopsisSeedlings of El Reno sideoats grama were found to be more tolerant to windblown soil than Blackwell switchgrass, sand lovegrass, and Indiangrass. Buffalo alfalfa seedlings were not as resistant to soil abrasion as the range grasses studied.
Relative Magnitude of Evaporation and Transpiration1
Authors: Peters D. B. 
Published: July 2010

SynopsisSoil evaporation accounted for as much as 50% of total water use where the soil surface was frequently wet from summer rains. In row crops, sufficient energy reaches the ground surface to account for the observed soil water evaporation. Transpiration varied in only a minor way with soil water supply.
Comparison of the Clipping and Chromogen‐Chromic Oxide Methods for Pasture Evaluation Using Various Forage Mixtures1
Authors: Marten G. C. , Wedin W. F. , Donker J. D. 
Published: July 2010

SynopsisThe chromogen‐chromic oxide method of measuring dry matter consumption by grazing dairy cows was more sensitive than the clipping (mower‐strip) method. Results by clipping were variable and unreliable. The comparison was not directly affected by differing forage mixtures.
Pink Snowmold on Bentgrass as Affected by Irrigation and Fertilizer1
Authors: Madison John H. , Petersen Lawrence J. , Hodges Thomas K. 
Published: July 2010

SynopsisThe incidence of pink snowmold was, on Highland bentgrass, more frequent on plots previously irrigated daily and in the morning. Turf fertilized with urea‐formaldehyde had more infections than that fertilized with urea. Disease incidence was greater on Seaside bentgrass than on Highland and there was more disease on plots receiving more nitrogen.
Response of Spring Oat Varieties to Different Planting Dates and Soil Fertility Levels1
Authors: Schmidt D. R. 
Published: July 2010

SynopsisLowered grain yields due to delayed planting dates were only partially overcome by increased fertilizer rates and use of earlier maturing, disease resisting varieties. Neither varieties nor yields from planting dates responded differentially to fertility levels. There was a differential response of varieties to planting dates and to years.
Effects of Compaction, Depth of Planting, and Soil Moisture Tension on Seedling Emergence of Alfalfa1
Authors: Triplett Glover B. , Tesar Milo B. 
Published: July 2010

SynopsisWith no irrigation following seeding, moisture conditions near the seed and initial emergence of alfalfa seedlings were improved progressively by increasing planting depths from 0 to 1 inch and soll compaction from 0 to 12 psi. When ½ inch of irrigation was applied after seeding, maximum average emergence was obtained from the ½‐inch planting depth with a soil compaction of either 6 or 12 psi. Compaction was less beneficlal to emergence as planting depth increased beyond ¼ inch, especially when irrigation followed planting.
Growth and Fruiting of Compact and Hy Normal Corn Types Under a High Population Stress1
Authors: Sowell W. F. , Ohlrogge A. J. , Nelson O. E. 
Published: July 2010

SynopsisThe ability of plants of the maize mutant, compact, to produce grain under conditions of population stress is due to the termination of vegetative growth at an earlier stage of plant development than in normal plants. The compact plants are then supporting only the reproductive functions at a time when normal plants are attempting to support both the reproductive functions and a high rate of vegetative growth.
Correlations between Digestibility and Chemical Constituents of Selected Grass Varieties1
Authors: Sosulski F. W. , Patterson J. K. 
Published: July 2010

SynopsisThe relationship of the proximate analysis and lignin content of some forage grasses to apparent digestibility and rate of consumption by sheep was determined statistically. For the prediction of apparent digestibility of orchardgrass strains, it is recommended that a regression equation of digestibility of energy on lignin content be used. A multiple regression of digestibility of energy on lignin and protein content proved to be the best prediction of apparent digestibility for species and genera comparisons.
Crop Response to Fertilizers Varying in Solubility of the Phosphorus, as Affected by Rate, Placement and Seasonal Environment1
Authors: Terman G. L. , DeMent J. D. , Engelstad O. P. 
Published: July 2010

SynopsisResponse by corn, millet, oats, and wheat grown in greenhouse pots increased in a similar manner at all seasons of the year with increase in water‐soluble P content of applied phosphate fertilizers.
Effect of Rates and Methods of Seeding on the Original Stand, Tillering, Stem Diameter, Leaf‐Stem Ratio, and Yield of Sudangrass1
Authors: Burger A. W. , Campbell W. F. 
Published: July 2010

SynopsisDrilled sudangrass produced higher original stand counts, smaller original stem diameter, and more herbage than when seeded broadcast. More tillering, smaller tiller stem diameters, and lower leaf‐stem ratios of drilled compared to broadcast sudangrass in the first harvests were not sustained into the later harvests. Row width or seeding rate had no significant effect on herbage yields.
Factors Affecting Seedling Emergence of Blackwell Switchgrass1
Authors: Hudspeth E. B. , Taylor H. M. 
Published: July 2010

SynopsisSwitchgrass seedlings emerged from 3 ¼ inch depth of loose soil. However, when compaction pressure or surface slaking caused drying soil to develop considerable rigidity, emergence was hindered. With static medium to high available‐moisture levels, pressures of 1 psi on loose soil caused significantly greater emergence than no pressure. Greatest emergence through a depth of ½ inch of loose soil occurred at about ⅓ atmosphere soil moisture tension.
Preinoculated Alfalfa Seed1
Authors: Hofer Alvin W. , Crosier Willard F. 
Published: July 2010

SynopsisFour‐week‐old alfalfa plants, inoculated or preinoculated by the “Noculized” or “Vicoated” processes, were often killed by fungi of the genus Fusarium. These organisms were seedborne and were most common on plants grown from preinoculated seed. Seedling infection was reduced by the seed protectants, captan and thiram, which did not affect nodulation.
Influence of Arsenic Applied to the Growth Media on the Arsenic Content of Flue‐Cured Tobacco1
Authors: Small H. G. , McCants C. B. 
Published: July 2010

SynopsisThe concentration of As in the cured leaf of field‐grown flue‐cured tobacco varied from 2 ppm where no As was applied to the soil to 14.3 ppm where the rate of application was 48 pounds As per acre (288 pounds lead arsenate). The highest concentration was in leaves from plants grown on the sandier soils and decreased as the clay and iron content of the soil increased. The As content of the aerial portion was considerably lower than that of roots of plants grown in sand cultures containing soluble As.
A Method for Incorporating Soil Test Measurements Into Fertilizer Response Functions1
Authors: Brown William G. , Jackson T. L. , Petersen Roger G. 
Published: July 2010

SynopsisA method for estimating the proportional equivalence of an applied nutrient to the corresponding nutrient existing in the soil is presented. If soil tests are made both before and after nutrient application, the proposed method can be used and promises to be direct and effective. An application of the method to lime and alfalfa experimental data is presented. Possibilities and implications of the procedure with regard to fertilizer recommendations are briefly discussed.
Genetic Measurements of Protein in the Grain of Triticum Aestivum L1
Authors: Haunold Alfred , Johnson V. A. , Schmidt J. W. 
Published: July 2010

SynopsisMean grain protein of F2 plants and F3 lines was intermediate to the parental varieties. Multigenic control of protein level was indicated. Heritability estimates of grain protein as high as 0.65 were obtained.
Effects of Soil Reaction, Clipping Height, and Nitrogen Fertilization on the Productivity of Kentucky Bluegrass Sod Transplants in Pot Culture1
Authors: Sullivan E. F. 
Published: July 2010

SynopsisKentucky bluegrass sod produced higher yields of top‐growth at pH 6.2 than at pH 5.1. The ½‐inch clipping height gave lower yields than the 2‐inch clipping height, particularly at pH 5.1. Each increment of nitrogen fertilizer increased top‐growth.
Performances of Six Grass Species under Different Irrigation and Nitrogen Treatments1
Authors: Cooper Clee S. , Klages Murray G. , Schulz‐Schaeffer Jurgen 
Published: July 2010

SynopsisGrass species varied in response to N, particularly at high rates of application. Species response to irrigation was similar, except for orchardgrass, which was adversely affected by low irrigation levels in 1959 and consequently showed the greatest response to irrigation treatment. Neither irrigation nor nitrogen affected the characteristic yield decline of species in mid‐ and late season. Decreases in yields of species as stands aged varied among species and were greater at low than at high irrigation and nitrogen levels.
Nutrient Uptake by Rice Plant and Its Effect on Yield1
Authors: Basak Megh Nath 
Published: July 2010

SynopsisDry matter synthesis and nitrogen and phosphate uptake by rice plant in field culture were highly correlated with grain yield. During intermediate stages of plant development, however, these functions showed steady progress in some centers and different degrees of interruption in some others. The interruptions caused losses in grain yield and were attributable to physiological consequences of lodging.
Effects of Saline Water from Hurricane “Audrey” on Soils
Authors: Clark Henry L. , Juve R. L. 
Published: July 2010

SynopsisInundation by salt water from Hurricane “Audrey” strongly affected the salinity of most soils. Salt marsh range soils and permeable ridge soils were least affected. Fresh marsh soils and slowly permeable ridge soils were most affected. The storm‐caused salinity decreased significantly for 14 months where the soils were not subject to salt water tides. Prestorm level of production of vegetation on areas studied was reached within two growing seasons.
Effect of Various Methods of Seedbed Preparation and Cultivation on Yields of Corn Grown Following Rye1
Authors: Beaty E. R. , Giddens Joel 
Published: July 2010

SynopsisPlowing a seedbed for corn following rye as a cover crop did not significantly increase corn yields over disking or seeding corn and mulching with rye. Removing rye before seeding corn or allowing the rye to grow after corn seeding ,significantly reduced corn yields. Controlling weeds with a hoe was as effective as cultivation and both were superior to no weed control.
Effects of Fall‐Applied Nitrogen Fertilizer and Winter Rainfall on Yield of Wheat1
Authors: Doll E. C. 
Published: July 2010

SynopsisYields of wheat were lower in 4 of 7 experiments for fall application of N than for topdressings in the spring. In 3 long‐time rotation experiments, 20 to 23% of the deviations of yields from the linear regression of yields on years could be attributed to winter rainfall. These results indicate that the major portion of N for wheat should be topdressed in the spring under Kentucky climatic conditions.
An Evaluation of Seed‐Yield Potential of Completely Male‐sterile Cotton in Areas of High and Low Natural Cross‐pollination1
Authors: Kohel R. J. , Richmond T. R. 
Published: July 2010

SynopsisNatural crossing influenced the time of boll set, number of bolls, number of seeds per boll, and total number of seeds produced on male‐sterile cotton plants. Estimates of natural crossing were available from material.
Effects of Compaction on Physical Properties of Sand‐Soil‐Peat Mixtures at Various Moisture Contents1
Authors: Swartz Walter E. , Kardos Louis T. 
Published: July 2010

SynopsisEight soils in sand‐soil‐peat mixtures reacted differently to compaction as reflected in percolation rates and aeration porosity. Generally, if the mixtures contained 50% or less total sand, compaction at high moisture contents resulted in inadequate percolation rates. Mixtures containing 70% total sand maintained adequate percolation rates under compaction but the average available moisture content of such mixtures was only 1.2 inches per foot of depth.
Maintenance of Nitrogen in a Brunizem Soil of Eastern Nebraska1
Authors: Sander D. H. , Chesnin Leon , Rhoades H. F. , McGill D. P. , Colville W. L. , Lyness W. E. 
Published: July 2010

SynopsisEffects of previous cropping systems and nitrogen fertilization on soil nitrogen maintenance were of a relatively low order. Results indicated that the soil nitrogen was in equilibrium with the environment.
Effects of Tempearture on S35 Uptake and Translocation by Rose and Subterranean Clovers1
Authors: McKell Cyrus M. , Wilson Alma M. 
Published: July 2010

SynopsisSubterranean and rose clovers were fertilized with S35 labeled S at 3 rates and grown in growth chambers at 50, 60, and 70° F. Radio‐analysis of tops and roots indicated an increase in S concentration in tops with increasing temperature but a decrease of S concentration in roots from 60 to 70° F. On a dry matter basis subterranean clover exceeded rose clover in the total uptake of S.
Response of Orchardgrass to Potassium and Nitrogen Fertilization on a Wickham Silt Loam1
Authors: Kresge C. B. , Younts S. E. 
Published: July 2010

SynopsisAnnual application of 200 pounds of N and 83 pounds of K per acre resulted in the highest orchardgrass yields and best recovery of N, P, and K by the plant. The K level in the plant at which yields fell below the maximum was positively related to the rate of N applied.
A Comparison of Two Established Fecal Index Systems for Estimating the Digestibility and Consumption of Forages by Grazing Dairy Cattle1
Authors: Marten G. C. , Wedin W. F. , Donker J. D. 
Published: July 2010

SynopsisEstimates of organic matter digestibility of pastured forages, derived from the fecal chromogen and nitrogen indicator methods, were highly correlated and equally sensitive when prediction equations developed by other workers were utilized. However, the nitrogen method consistently indicated higher forage digestibility. When the TDN requirement of lactating dairy cows was used as a standard, intake of digestible organic matter estimated by the nitrogen‐chromic oxide method was more reliable than intake estimated by the chromogen‐chromic oxide method.
A Collaborative Study of the Ethylenediaminetetraacetate (EDTA) Method for Rating Agricultural Limestones. II. Relationship of Ratings and of Calcium Carbonate Content of Limestones to Their Reactivity in the Soil1
Authors: Whittaker Colin W. , Axley J. H. , Peech Michael , Steckel J. E. , McLean E. O. , Hunter Albert S. 
Published: July 2010

SynopsisRates of reaction of representative agricultural limestones in various soils were highly correlated with reactivity as measured by reaction with the di‐ or trisodium salts of ethylenediaminetetraacetic acid under standardized conditions, and with the calcium carbonate content of the limestones. The trisodium salt seemed superior as a rating reagent but none of the three reactivity indices accounted for all the variation in reactivity of the limestones in the soil.
An Outdoor Gravel Culture Set‐Up for Plant Growth Studies1
Authors: Barker Allen V. , Bradfield Richard 
Published: July 2010

SynopsisIt was possible to obtain corn yields which doubled those in nearby field plots. Better water and air supplies are believed to be the primary factors accounting for the yield differences. The study indicates that light may become a limiting factor when fertility conditions are made optimum. The hydroponic technique has potential in revealing deficiencies of the soil environment and for studying the effects of climate on crops growing under natural field conditions.
Effects of Soil and Soil Moisture Levels on Cold‐Test Germination of Corn1
Authors: Hooks J. A. , Zuber M. S. 
Published: July 2010

SynopsisSoils from fields cropped continuously to corn gave lower germination results than soil from a field in rotation or soil which had never been planted to corn. Germination was reduced considerably in soil sampled after one year of corn production and indicated that crop rotation would help in preventing this reduction.
A Chlorophyll Index to Measure Turfgrass Response1
Authors: Madison John H. , Andersen Aage H. 
Published: July 2010

SynopsisThe chlorophyll content is expressed as mg. per dm.2 of land and this is termed a chlorophyll index (CI). The CI correlates with visual turf ratings, responds to fertilizer, but when nitrogen levels are adequate it is little responsive to mowing, irrigation, or shading practices.
Investigations of High‐Population Corn for Forage and Green Manure1
Authors: Mishra M. N. , Pendleton J. W. , Mulvaney D. L. , Johnson P. E. 
Published: July 2010

SynopsisTwo crops a year or a single crop of highpopulation corn (200,000 plants per acre) provided more pounds of dry forage and protein than conventional population corn, but had poor silage characteristics. High population corn crops incorporated in the soil as green manure afforded high yields of corn grain the succeeding two years, but did not surpass the conventional practice of interseeding spring oats with a legume.
Behavior of Artificially Deteriorated Cottonseed after Various Storage Periods1
Authors: Bollenbacher Katharina , Fulton N. D. , McCutchen B. E. 
Published: July 2010

SynopsisGermination rates usually increased during the first few months but dropped to pre‐storage levels by the end of 5 months. Deteriorated seeds declined in speed of germination at below‐optimum temperature and the decline began sooner in the more severely deteriorated seeds. Speed of germination was reduced in “ginrun” Rex seeds, but not in unweathered M8948 seeds. Moisture content of deteriorated seeds dropped to the pre‐deterioration level by the end of the first month and varied only slightly during the remaining 4 months.
Effect of Variously Soluble Potassium Fertilizers on Yield and Composition of Some Crop Plants1
Authors: Caldwell A. C. , Kline J. R. 
Published: July 2010

SynopsisSlowly soluble K fertilizers did not restrict luxury consumption of K by plants when used at practical rates. Less salt damage to flax seedlings occurred from the use of slowly soluble K fertilizers than from KCl.
Comparison of Methods of Evaluating Relative Maturity in Grain Sorghum Hybrids1
Authors: Warnes Dennis D. 
Published: July 2010

SynopsisPercent of grain moisture in ripening grain sorghum hybrids and average number of days from planting to one‐half bloom were highly correlated, but correlations were lower at successive sampling dates as the crop approached maturity. A low correlation was observed when grain moisture and days from planting to bloom were compared within a single maturity group. Days to one‐half bloom are a general indication of relative maturity of sorghum hybrids, but differential drying and filling rates are also important in determining relative harvest maturities.
An Agronomically Useful Three‐Factor Response Surface Design Based on Dodecahedron Symmetry1
Authors: Hermanson H. P. , Gates C. E. , Chapman J. W. , Farnham R. S. 
Published: July 2010

SynopsisThis design allows application of 3 quantitative independent variables at 7 preselected levels each and the fitting of a second degree polynomial to the quantitative dependent variable data. Thirty plots per replicate can be divided into 5 equal sized blocks of 6 plots. An estimate of error with five degrees of freedom is available within each replicate. This design has proven practical for soil fertility field experimentation and an example of this application is given.
Stand Establishment and Yield of Grain Sorghum as Affected by Method of Planting and Use of Press Wheels1
Authors: Stickler F. C. 
Published: July 2010

SynopsisHighest grain yields were obtained with a 2.5‐inch seed spacing. Where surface moisture availability was low, a small lister opener gave best stand establishment. Under favorable conditions, a tool‐bar, unit type planter was best. In 1961 and 1962, press wheels increased stands by 14%, and yield by 8%.
Influence of a Barley Companion Crop Upon Root Distribution of Alfalfa, Birdsfoot Trefoil, and Orchardgrass1
Authors: Cooper Clee S. , Ferguson Hayden 
Published: July 2010

SynopsisVertical and lateral root growth of all three species was reduced when they were established with a companion crop. The companion crop was most deleterious to root growth of birdsfoot trefoil. Barley was able to compete with forage seedlings for moisture and nutrients early in the establishment period due to rapid root growth. Soil moisture and temperature were lower under the barley crop. Mature barley intercepted 89% of the incident light in early morning and 22% at noon.
A Preliminary Study on the Nature of a Zinc Deficiency in Field Beans a1s Determined by Radioactive Zinc1
Authors: DeRemer E. Dale , Smith R. L. 
Published: July 2010

SynopsisA zinc deficiency was found to be caused by inactivation of soil zinc by decomposing organic matter. Zinc was found to increase in the acid extractable and H202 extractable fractions of the soil and to decrease in the water extractable and exchangeable portions as length of incubation time of the added organic material and soil increased from 6 to 12 weeks.
Application of Game Theoretic Models to Agricultural Decision Making1
Authors: Walker Odell L. , Heady Earl O. , Pesek John T. 
Published: July 2010

SynopsisA brief description is given of four game theoretic models for decision making under uncertainty, and their implications and application discussed. These concepts are then utilized to obtain solutions to a problem of selecting oats varieties for northeastern Iowa on the basis of several years of yield data.
Effect of Water Solubility and Granule Size of Phosphorus Fertilizers on Alfalfa Grown in a Calcareous Soil1
Authors: Romsdal S. D. , Schmehl W. R. 
Published: July 2010

SynopsisYield and P uptake were increased by increasing the water solubility or decreasing the granule size of the fertilizers. There was a water‐solubility × granule‐size interaction but solubility had little influence on yields with the 40‐mesh or smaller materials. The effectiveness of fertilizers having 47% or more solubility tended to be independent of size. The influence of solubility on yield and P uptake was reduced with successive cuttings or by incubating the soil‐fertilizer system before cropping.