bluuebunny/crossref_metadata_2025_split huggingface dataset:
Nitrogen Changes Attending Various Crop Rotations on Clarion‐Webster Soils in Iowa1
Authors: Bartholomew W. V. , Shrader W. D. , Englehorn A. J. 
Published: July 2010

SynopsisNitrogen declines with cultivation of Clarion‐Webster soil were largest under a cropping system of continuous corn followed in the order of decreasing decline by the 2‐year rotation of corn and oats, the 5‐year rotation with 2 years of meadow and the 3‐year rotation with 1 year of meadow. Plots with high initial nitrogen lost more nitrogen and a larger percentage of total nitrogen than plots with low initial nitrogen.
Cytoplasmic Influence in the Production of the Pistillate Sex Expression in Castorbeans1
Authors: Parkey Wade 
Published: July 2010

SynopsisThe pistillate sex expression of the castorbean selection, herein described as line 1–4, is governed by the interaction of a pistillate cytoplasm in the presence of at least one dominant genetic factor, The pistillate line is maintained by backcrossing to the homozygous dominant male parent. Utilization of this phenomena will enable a more economical commercial production of hybrid castorbean seed as roguing in hybrid increase fields is not required.
Comparison of Rock Phosphate to Superphosphate for Oats and Alfalfa on Three Podzolized Soils of Eastern Canada1
Authors: Finn B. J. , Cook R. L. , Harrison C. M. 
Published: July 2010

SynopsisSuperphosphate increased oat yields more than did rock phosphate, even when applied on a citrate soluble basis. Rock phosphate resulted in higher yields of alfalfa hay and roots than did superphosphate in all but two cases. Lime did not greatly reduce the effectiveness of rock phosphate, except on one soil where the pH was raised to 8.0.
Fluorometric Assay of Free and Bound Coumarin in Sweetclover1
Authors: Haskins F. A. , Gorz H. J. 
Published: July 2010

SynopsisFree and bound coumarin are extracted by autoclaving leaf tissue in water. Free coumarin is determined directly from an aliquot of the water extract diluted in alkali. Additional autoclaving of the extract in concentrated alkali is required for release of the coumarin from the bound form, permitting an assay for total coumarin. Bound coumarin values are then obtained by difference. Results of the assay as applied to four different phenotypes of sweetclover are given.
Development of the Hard Red Winter Wheat Kernel in Relation to Yield, Test Weight, Kernel Weight, Moisture Content and Milling and Baking Quality1
Authors: Scott Gene E. , Heyne E. G. , Finney K. F. 
Published: July 2010

SynopsisMaximum yield, test weight, and kernel weight of hard red winter wheat occurred when the moisture content of the grain was about 40%. Immature seed germinated rapidly but mature seed gave better seedling vigor and storage life. The maximum protein quality was reached at about the same time as maximum yield and test weight.
Plant‐Nutrient Losses in Lysimeter Percolates1
Authors: Dreibelbis F. R. , McGuinness J. L. 
Published: July 2010

SynopsisPlant nutrient losses in the percolates from monolith lysimeters over the period 1940–1955 were analyzed for variables of soil type, farming practice and amounts of percolate. Under permanent grass the depth of rooting was associated with percolation amounts while farming practice governed the amount of nutrient losses. Under rotation crops the tighter Keene soils showed greater nutrient losses than the more permeable Muskingum soils. Nutrient losses under different farming practice showed a mixed response.
Tillering Studies in Oats III. Effect of Rate of Planting and Test Weight1
Authors: Wiggans S. C. , Frey K. J. 
Published: July 2010

SynopsisThe number of head‐bearing culms per oat plant decreased as planting rate was increased. Low test weight seed produced a significantly higher number of headbearing culms per plant than high test weight seed in 4 of the 6 varieties grown in 1955. No similar relationship existed in 1954.
Inheritance of Awn Barbing in Two Barley Crosses1
Authors: Atkins R. E. , Frey K. J. 
Published: July 2010

SynopsisThe inheritance of awn barbing was studied using F2 and F3 populations of two barley crosses. A single dominant factor governed the expression of semi‐smooth awns in one cross, while two dominant linked genes determined the segregation of rough and smooth awn types in the second cross. A recombination value of 26% was calculated for the linked genes operative in the second cross.
Soil Fertility Effects of Intensive Greenhouse Cropping With Peanuts1
Authors: Reid P. H. , York E. T. 
Published: July 2010

SynopsisFertilization of peanuts with inorganic phosphorus plus potassium in amounts equal to that removed by the previous crop was more effective in maintaining peanut yield than was fertilization with the plant material. Phosphorus fertilization alone was of little value in maintaining production. After two crops, the soil potassium was reduced to a low level and a uniform rate of potassium supply was reached.
Changes in Composition of the Timothy Plant at the Bloom Stage1
Authors: Huq Fazlul , DeLong W. A. 
Published: July 2010

SynopsisChemical analysis of plant parts at four growth stages provided evidence of upward translocation of magnesium coincident with accumulation of a phosphorus fraction in the upper part of the timothy plant. Fertilization with nitrogen 41 days prior to the first sampling influenced the carbohydrate content and the uptake and distribution of phosphorus.
Effect of 2,4‐D on the Growth and Yield of Oats Grown Under Three Levels of Fertility1
Authors: Aldrich Richard J. 
Published: July 2010

SynopsisPlants in the minimum fertility level were relatively unaffected by 2,4‐D in any stage. At the medium fertility level yields were reduced most by treatment during the seedling stage but were also reduced significantly by treatment during anthesis. Mean yields at the high fertility level were reduced significantly only by treatment during anthesis.
Yield, Potassium Content and Root Distribution of Alfalfa and Bromegrass Grown Under Three Levels of Applied Potash in the Greenhouse1
Authors: Lawton K. , Tesar Milo B. 
Published: July 2010

SynopsisIn greenhouse trials, significant increases in yield and K absorption of alfalfa and bromegrass were obtained as applied K increased. Yield response to fertilizer K was less marked with soil containing more available soil K. Total production of bromegrass was half that of alfalfa, but the quantities of K removed were about equal. The change in several extractable fractions of soil K was directly related to the root distribution pattern of the forage.
Microtechnics Applied to Wheat Quality Evaluation1
Authors: Shellenberger J. A. , Shogren M. , Laude H. H. 
Published: July 2010

SynopsisApplication of microtechnics to wheat quality evaluation provides a means for obtaining the following information on as little as 100 g. of sample: moisture, protein, ash, 1,000 kernel weight, flour yield, dough development characteristics, absorption, and loaf volume. Microtechnics can have wide application for wheat breeders by providing quality information on early generations of hybrid populations.
Effect of Rotation With Green Manuring and Irrigation on Physical Characteristics of Hesperia Sandy Loam1
Authors: Flocker W. J. , Vomocil J. A. , Vittum M. T. , Doneen L. D. 
Published: July 2010

SynopsisSome physical characteristics of Hesperia sandy loam were studied after 8 years of 9 different rotation treatments. Data from 4 rotations of cultivated row crops only were compared with data from 4 rotations of Cultivated row crops plus cover crops. Rotations which included cover craps did not significantly increase organic matter content of this soil nor the infiltration rate, did not change bulk density, but did slightly increase degree of cloddiness.
Forage Production of Rye, Oats, and Ryegrass as Influenced by Fertilization and Management1
Authors: Burton Glenn W. , Prine Gordon M. 
Published: July 2010

SynopsisOver a 3‐year period, Abruzzi rye produced more for‐age than Southland oats at applied nitrogen rates of 0, 50, 100, 200, and 400 pounds per acre. Domestic ryegrass made little growth at low nitrogen rates, but outyielded oats at the 400‐pound rate. All three species responded to phosphorus and potassium. Forage yields were increased by cutting at bimonthly, rather than monthly, intervals. Application of nitrogen increased the protein content of all species.
Rain and Sunshine Effects on the Wheat Meal Fermentation Time Test1
Authors: Pool Mart , Patterson Fred L. 
Published: July 2010

SynopsisRain and sunshine had large opposite effects on the fermentation of wheat meal of 3 varieties of soft red winter wheat during a delayed harvest period of 46 days. The hypothesis is offered that these effects are the result of an activation by rain and the inactivation by sunshine of glutathione or other sulfhydryl compounds.
An Evaluation of Granite Meal as a Source of Potassium for Coastal Bermudagrass1
Authors: Jackson James E. , Burton Glenn W. 
Published: July 2010

SynopsisFinely crushed granite meal was an inferior source of potassium for Coastal Bermudagrass on a potash‐deficient Kershaw sand. One unit of K2O in muriate of potash supplied as much available potassium as 8 units of K2O in granite meal.
Heritabilities in Sand Bluestem (Andropogon hallii Hack.) as Estimated from Parental Clones and Their Open‐Pollination Progenies1
Authors: Kneebone William R. 
Published: July 2010

SynopsisFair agreement was obtained for heritability estimates derived in three ways: variance components from clonal data, variance components from open‐pollination progeny data, and parent progeny regressions. Characters studied were plant height, plant diameter, leafiness, and protein percentage in the leaves. Considerable genetic potential was indicated for all characters, with height most heritable and protein percentage least.
Inheritance of Seed Color and Resistance to Races of Stem and Crown Rust in Avena strigosa1
Authors: Murphy H. C. , Zillinsky F. J. , Simons M. D. , Grindeland Roger 
Published: July 2010

SynopsisGrey‐striped seed color of the CD 3820 parent was dominant to the white color of the CI 4748 parent and conditioned by a single factor. Resistance to 4 races of stem rust and 2 races of crown rust was apparently conditioned by the same gene or genes. Both parents and the F3 population were resistant to race 276 of crown rust.
Relative Importance of Test Sequence for General and Specific Combining Ability in Corn Breeding1
Authors: Lonnquist J. H. , Rumbaugh M. D. 
Published: July 2010

SynopsisLines selected for specific combining ability were found to represent a random sample with respect to general combining ability when compared with an unselected group of lines from the same original source using a broad gene base tester. The data support the common practice of testing new lines first for general combining ability, followed by tests for specific combining ability. Population improvement was greater when selection was based on a broad gene base tester.
“Solution 32” as a Source of Nitrogen for Direct Application1
Authors: Cummings R. W. , Krantz B. A. , Mehlich A. , Nelson W. L. , Rankin W. H. , Weaver D. S. 
Published: July 2010

SynopsisIn manufacture, nitrogen fertilizer materials are first produced in liquid form. If these could be applied directly to the soil some of the costs involved in drying, pelleting, coating, and handling could be reduced or omitted.
Residual Effect of Irrigation on Soil Physical Properties and on Runoff1
Authors: Brill G. D. , Blake G. R. 
Published: July 2010

SynopsisSeven years of irrigation of sweet corn grown continuously and in rotation resulted in increased bulk density and lowered aggregate stability of soil and in increased runoff of rainfall. These effects persisted over winter after cessation of water application and were measureable prior to the first irrigation the following season even though as much as 36 inches of rainfall intervened.
Uronide Production in Soils as Affected by Crop Residues and Casein1
Authors: Hearns E. E. , Lynch D. L. , Cotnoir L. J. 
Published: July 2010

SynopsisThe peak of uronide production generally occurred after 6 weeks and diminished greatly after 11 weeks. After 48 weeks all soils had uronide contents below their original values.
Effect of Light Treatment on the Relative Uptake of Labeled Carbon Dioxide by Legume Seedlings1
Authors: Rhykerd C. L. , Langston Ruble , Peterson J. B. 
Published: July 2010

SynopsisAlfalfa and red clover fixed significantly greater quantities of CO2 under all light treatments than birdsfoot trefoil. Plants which had been grown under an illumination period with a constant light intensity took up a greater amount of CO2 than plants which had been grown under an illumination period of the same length and light quantity but at several different intensities.
Spring Oats for Winter Forage in the Southwest1
Authors: Thompson R. K. , Day A. D. 
Published: July 2010

SynopsisSpring oats were successfully grown for winter forage in the Southwest. High yields of high quality pasture, green chopped feed, and hay were obtained. Markton was the best variety for winter forage production. Spring oats produced more winter pasture forage than spring barley.
Influence of Light on the Foliar Growth of Alfalfa, Red Clover, and Birdsfoot Trefoil1
Authors: Rhykerd C. L. , Langston Ruble , Mott G. O. 
Published: July 2010

SynopsisLow intensities and/or quantities of light resulted in a high proportion of leaves to stems on alfalfa and red clover and a low proportion of leaves to stems on birdsfoot trefoil. Increasing the light energy decreased the leafiness of alfalfa and red clover but increased the leafiness of birdsfoot trefoil. As the plants reached maturity the leaf/stem ratio of the three species became approximately the same at high light intensities and/or quantities.
Further Investigations of the Inheritance of Resistance to Phytophthora Rot in the Soybean1
Authors: Smith P. E. , Schmitthenner A. F. 
Published: July 2010

SynopsisSegregating populations (F2 and F3) of two soybean crosses were tested for reaction to Phytophthora soiae. The data indicate resistance is dominant, conditioned by a single major gene pair, and that the dominant allele is inhibited by modifiers.
The Extent of Aberrants Produced by Merion Kentucky Bluegrass, Poa pratensis L., as Determined by First and Second Generation Progeny Tests1
Authors: Duich J. M. , Musser H. B. 
Published: July 2010

SynopsisAberrants produced by Merion Kentucky bluegrass averaged from 2.8 to 4.2% in 2 generations of progeny tests. Aberrancy from plural seedlings averaged 12.3% from the less than 2% polyembryos produced. Only 19% of the aberrants were found to be plus or equal. Second‐generation progeny tests are necessary and valuable for verification of first‐generation classifications and obtaining information on advanced‐generation performance.
Studies on the Nature of Resistance in Alfalfa to Two Species of Root‐Knot Nematodes1
Authors: Goplen B. P. , Stanford E. H. 
Published: July 2010

SynopsisAn example is reported in which penetration of Meloidogyne hapla larvae into resistant alfalfa plants was totally inhibited. A grafting analysis established that this resistance was not due to a translocated top‐produced compound but was an inherent property of the root. In contrast to the results with M. hapla, nematode larvae of M. javanica javanica did enter plants resistant to this species but were not able to reproduce.
Inheritance of Resistance to Helminthosporium Blight, Crown Rust Race 216, and Stem Rust Race 7A in Oats1
Authors: Rivers George W. 
Published: July 2010

SynopsisThe inheritance of resistance to oat crown rust race 216 was found to be monogenic with susceptibility dominant, and resistance to Helminthosporium blight was controlled by a single pair of recessive genes. Homozygous early generation progeny were obtained with combined resistance to Helminthosporium blight and crown rust race 216. Resistance to stem rust race 7A was found to be inherited as a simple dominant character.
Growth Responses of Alfalfa and Sudangrass in Relation to Cutting Practices and Soil Moisture1
Authors: Dennis R. E. , Harrison C. M. , Erickson A. E. 
Published: July 2010

SynopsisYield was associated directly with cutting interval, regrowth being stimulated by frequent cutting for only a short period. Water consumed, per unit of forage produced, decreased as length of cutting interval increased. Sudangrass used moisture from the upper foot of soil and was more efficient in water use than alfalfa during June, July, and August. Consumptive use of water was closely associated with rainfall during the period of active plant growth.
Polyembryony in American Rye Varieties1
Authors: Morey Darrell D. , Morey Janice 
Published: July 2010

SynopsisGator, Hazel, Prolific Spring, Wood's Abruzzi, and Pierre ryes showed a high frequency of polyembryony. Antelope, Caribou, Florida Black, and Tetra Petkus ryes exhibited a low frequency of twins. The region where grown, the year of production, growth type, or viability had little to do with twinning; but varietal differences were striking and consistent. A genetic basis for polyembryony in American rye varieties is suggested.
Effect of Stage of Development on Carbohydrate Content, Growth, and Survival of Red Clover1
Authors: Kendall W. A. , Hollowell E. A. 
Published: July 2010

SynopsisAt the time of harvest plants which had set seed were significantly smaller with a less amount of carbohydrates than plants which had matured only to the vegetative, bud, or flower stage of growth. Vegetative plants had a smaller proportion of tops to roots than reproductive plants. After the harvest plants which had set seed survived as long and grew as much in a dark chamber as the less mature plants.
Uniformity Trials on Germination of Switchgrass Seed1
Authors: Ahring Robert M. , Morrison Robert D. , Wilhite Mary L. 
Published: July 2010

SynopsisSignificant differences between tray levels in percent germination were obtained in 3 of the 4 germination environments tested. With the germinator filled to capacity, temperatures in top, middle, and bottom trays varied as much as 4° C. from the intended means. These tests indicate that small differences in environment within a germinator influence the percent germination and that a random replication of seed samples by tray is needed in order to give a better estimate of the germination of a given seed lot.
Transmission Studies of Alfalfa Witches’ Broom Virus in Utah1
Authors: Glover David V. , McAllister DeVere R. 
Published: July 2010

SynopsisThe leafhopper, Scaphytopius acutus (Say) was the only insect, of six tested, found to be a vector of the alfalfa witches’ broom virus in Utah. Transmission attempts with three dodder species failed to transmit the virus from alfalfa to alfalfa.
Inheritance of Stem Rust Reaction in Tetraploid Wheat Hybrids: II. Genes for Resistance to Race 15B from Khapli Emmer1
Authors: Heermann R. M. 
Published: July 2010

SynopsisIn the F1 to F3 generations of a series of crosses involving Khapli emmer, Stewart durum, and three Khapli derivatives, seedling reaction of Khapli emmer appeared to depend on two independent dominant genes. The adult reaction was controlled by at least four independent genes from Khapli. Two of these were partially dominant and two were recessive. The genes for seedling resistance and the two partially dominant genes for adult resistance were identical or closely linked.
Pollination of Several Clovers by Honeybees1
Authors: Weaver Nevin , Weihing Ralph M. 
Published: July 2010

SynopsisSeed yields of five Trifolium species were inadequate when honeybees were excluded. A commercial variety of Trifolium resupinatum L. produced an adequate amount of seed with honeybees excluded, but yielded twice as much seed if honeybees were present.
Selection of Alfalfa Lines for Their Ability to Germinate Under High Osmotic Pressure1
Authors: Dotzenko A. D. , Haus T. E. 
Published: July 2010

SynopsisSelections were made from 6 alfalfa varieties for the ability of the seed of these varieties to germinate in a mannitol solution having 12 atmospheres osmotic pressure. This ability to germinate appears to be heritable and varies with the different varieties tested.
Acceleration of Early Growth of Sugar Beet Seedlings by Coating of Seedballs with Hydrophilic Colloids and Nutrients1
Authors: Miyamoto Takao , Dexter S. T. 
Published: July 2010

SynopsisGrowth of sugar beet seedlings in a clay loam near the permanent wilting point (11.5% moisture) was accelerated by treating the seedballs with a hydrophilic colloid plus inorganic and organic nutrients.
Transfer of Crown Rust Resistance of Diploid and Tetraploid Species to Hexaploid Oats1
Authors: Sadanaga K. , Simons M. D. 
Published: July 2010

SynopsisCrown rust resistance of the diploid variety, C.D. 3820, has been transferred to 43 and 42 chromosome hexaploid types by using a derived tetraploid, C.I. 7232. Resistance of a second diploid variety, C.I. 3815, and a tetraploid variety, C.I. 7233, has been transferred to the second and third backcross generations.
Relationship of Nitrogen and Grain Sorghum Yield Under Three Moisture Regimes1
Authors: Mathers A. C. , Viets F. G. , Jensen M. E. , Sletten W. H. 
Published: July 2010

SynopsisThis study indicated that sorghum yields can be predicted from nitrate analyses. A sampling depth of 4 feet seems necessary. Soil tests for N are of limited value in semiarid or arid areas without irrigation. Near maximum yields were obtained from 140 pounds of nitrate or nitrate plus fertilizer N per acre.
An Evaluation of Certain Winter Cover Crops for the Control of Splash Erosion1
Authors: Ram Dip N. , Vittum M. T. , Zwerman P. J. 
Published: July 2010

SynopsisDomestic ryegrass was the most effective in preventing splash erosion. During the spring, rye was equally effective as the field brome. During the fall, nonhardy alfalfa and field brome were less effective than ryegrass. Spatial volume (average height × density) gave the best relation with effectiveness in controlling splash erosion.
Leaf Removal in Grain Sorghum. II. Trends in Dry Matter, Carbohydrates, and Nitrogen Following Defoliation1
Authors: Pauli A. W. , Stickler F. C. 
Published: July 2010

SynopsisAccumulations of dry matter, total sugars, acid hydrolyzable carbohydrates, and nitrogen were reduced in plants and grain of Plainsman grain sorghum partially or completely defoliated at the boot or anthesis stage.
Phosphorus Responses by Dryland Spring Wheat as Influenced by Moisture Supplies1
Authors: Power J. F. , Brown P. L. , Army T. J. , Klages M. G. 
Published: July 2010

SynopsisYield increases from P fertilization of dryland spring wheat were influenced by available soil P, soil moisture, and precipitation. Yield increases on medium P soils were directly proportional to the amount of moisture available at seeding and to the sum of seeding time moisture plus precipitation from tillering to heading. On relatively high or low P soils the availability of soil P largely determined how P applications affected yield increases.
Variation in Barley Stripe Mosaic Virus Incidence in Wheat Seed Due to Storage and Continuous Propagation and the Effect of the Disease on Yield and Test Weight1
Authors: McNeal F. H. , Mills I. K. , Berg M. A. 
Published: July 2010

SynopsisBarley stripe mosaic virus has caused severe losses in spring wheat yields and moderate losses in test‐weights in experimental trials in Montana since 1956. Field readings for incidence of virus show the disease has increased in Pilot and Centana, has about maintained itself in Rescue, and has decreased in Lee, C.I. 13041, C.I. 13042, Supreme, and Thatcher. Greenhouse plantings showed that storage had little or no effect on the percentage of seed which carried the virus.
Effect of Variety and Rate of Seeding on the Drying Rate of Sudangrass Herbage for Hay1
Authors: Burger A. W. , Hittle C. N. , Graffis D. W. 
Published: July 2010

SynopsisThe herbage of sudangrass varieties with thick stems dries more slowly than that of thin stemmed varieties. Small stem diameters are a result of varietal characteristics, high rates of seeding, and heavy tillering habit.