bluuebunny/crossref_metadata_2025_split huggingface dataset:
Variation and Inheritance of Fertility and its Components in Bromus inermis Leyss1
Authors: Raeber J. G. , Kalton R. R. 
Published: July 2010

SynopsisAnalysis of 20 S0 clones of bromegrass and S1 segregates for fertility attributes revealed the following 2‐year grand means for all S0 clones: fertility percentage, 52.1; number of florets per panicle, 288; and number of seeds per panicle, 150. Differences among clones were all highly significant in each of the 2 years. Compared with S0 most S1 families showed substantial decreases in fertility percentage and seeds per panicle. Genetic segregation for fertility percentage was indicated in all families. Florets per panicle and fertility percentage showed little or no relationship, while seeds per panicle and fertility percentage showed strong positive phenotypic and genetic correlations. Results indicate that fertility is moderately heritable in bromegrass.
Strains of Rhizobia Effective on Trifolium ambiguum1
Authors: Erdman Lewis W. , Means Ura Mae 
Published: July 2010

SynopsisEffective strains of rhizobia to inoculate Kura clover (Trifolium ambiguum) were isolated from nodules on T. spadiceum, T. ochroleucon and from nodules on T. ambiguum produced with enrichment cultures prepared with six different soil samples. These soils and the nodulated specimens were all from the same general locality in Turkey. In greenhouse sand cultures 21 strains gave yields which were significantly better than the uninoculated controls. In greenhouse soil cultures with five soils, an overall comparison of the uninoculated plants with the inoculated plants showed a highly significant increase in dry weight and nitrogen content brought about by the inoculation.
Influence of Lodging on Yield and Other Characters in Winter Wheat1
Authors: Laude H. H. , Pauli Arland W. 
Published: July 2010

SynopsisYields were reduced about one‐third due to lodging 1 to 2 weeks before heading and 1 to 2 weeks after heading. Lodging between those periods caused less reduction averaging about 15% just before heading. Early lodging mainly reduced the number of kernels per head and later lodging reduced the size of the kernel. Protein content of the grain was higher in lodged than standing wheat. The total amount of protein per acre, however, was less in lodged areas.
The Genetic Induction of Autotetraploidy: A Proposal for its Use in Corn Breeding
Authors: Alexander D. E. 
Published: July 2010

SynopsisA method for establishing autotetraploid synthetic varieties of maize by genetic means is outlined. The ultimate use of these synthetic varieties as a source of breeding material is proposed. If genetic inbalance is largely responsible for low seed set in maize tetraploids, fertile inbreds or fertile hybrid combinations can be expected to be isolated from synthetic varieties that are genetically diverse within and between themselves. An examination of aneuploidy as a cause of sterility is made.
The Relation between Pod Dehiscence, Relative Humidity and Moisture Equilibrium in Birdsfoot Trefoil, Lotus corniculatus1
Authors: Metcalfe D. S. , Johnson I. J. , Shaw R. H. 
Published: July 2010

SynopsisBirdsfoot trefoil pods of clone B74 dehisced at a relative humidity of 29.5% but not at 35%. Pods from a bulk sample of the Empire strain dehisced at a relative humidity of 40% suggesting that differences occur among lots of mature pod. There was a close interdependence of relative humidity, moisture equilibrium and pod splitting. At low relative humidity, moisture content of pods was, reduced rapidly to the point of dehiscence. Temperature, a factor in relative humidity, varied as much as 10° F. from air temperature. Increase of pod temperature in full sunlight may be enough to reduce relative humidity and pod moisture and bring about pod dehiscence.
Root Respiration of Tobacco, Corn, and Cotton Plants1
Authors: Harris D. G. , van Bavel C. H. M. 
Published: July 2010

SynopsisThe respiration rates of tobacco, corn, and cotton roots undergo daily fluctuations with the maximum rate generally occurring about 4 p.m. Root weight appears to be the primary factor influencing the amount of respiration under favorable aeration conditions. However, the concentrations of CO2 and O2 in the root atmosphere influence the respiration rate.
Studies of the Interrelation of Field Stalk Lodging, Two Stalk Rotting Fungi, and Chemical Composition of Corn1
Authors: Zuber M. S. , Grogan C. O. , Michaelson M. E. , Gehrke C. W. , Monge Jose Ferer 
Published: July 2010

SypnosisSusceptibility to stalk lodging was positively associated with ash, cellulose, potash, and silica but was not associated with susceptibility to Diplodia zeae or Gibberella zeae. Diplodia was negatively associated with ash, crude fiber, lignin, and cellulose but was positively associated with nitrogen. Gibberella was similarly associated except no relation with ash or lignin was found.
Factors Affecting Linolenic and Linoleic Acid Content of Soybean Oil1
Authors: Howell Robert W. , Collins F. I. 
Published: July 2010

SynopsisLinolenic acid content of soybean oil from location and variety composites varied from about 5% to about 8.5% and linoleic acid varied from about 46% to about 54%. The levels of both fatty acids were closely, but inversely correlated with temperature. Changes in environmental factors such as photoperiod, light intensity and quality, N, P, K, and S nutrition, or the addition of manure or plant residues had little or no effect on the levels of these fatty acids.
Effect of Nutrient Deficiencies on Growth and Fruiting Characteristics of Peanuts in Sand Cultures1
Authors: Reid P. H. , York E. T. 
Published: July 2010

SynopsisNitrogen, calcium, magnesium, boron and sulfur deficiencies appeared rapidly after the respective elements were withheld from the culture solution. Phosphorus, potassium, manganese, iron, copper, zinc and molybdenum supplied early in the season were sufficient to complete the life cycle although growth and fruit formation were reduced.
Estimates of Genotypic and Environmental Variances and Covariances in Upland Cotton and Their Implications in Selection1
Authors: Miller P. A. , Williams J. C. , Robinson H. F. , Comstock R. E. 
Published: July 2010

SynopsisPlot error variances were large for lint yield, bolls per plant, seed per boll, and boll weight; small for lint percentage, seed and tint index, and fiber length, strength and fineness. Genotype x environment interaction variances were generally small for all traits except yield and bolls per plant. Lint yield was highly positively correlated with lint percentage and bolls per plant and negatively correlated with seed index and weight per boll.
Trace Elements in Agricultural Limestones of Atlantic Coast Regions1
Authors: Chichilo P. , Whittaker Colin W. 
Published: July 2010

SynopsisCompared to amounts of elements removed from the soil by cropping or to amounts added to soils to correct deficiencies many limestones of the Atlantic Coast Regions contain important amounts of magnesium, iron, manganese, molybdenum, sulfur and zinc at ordinary application rates. On the same basis, amounts of potassium, phosphorus, boron and copper are of much less importance.
Fertility Restoration and Yields in Maize1
Authors: Stringfield G. H. 
Published: July 2010

SynopsisTests of 30 maize cultures in the Texas (cms) cytoplasm and segregating for fertility restoring genes gave a significant advantage in yield for the restored plants. Apparently normal fertiles and restored fertiles are different in productiveness. Working hypotheses are: (1) Restorer genes have a pleiotropic vigor‐producing effect, (2) The Texas cytoplasm is superior to the more common United States cytoplasms, and (3) A heterotic genotype × cytoplasm interaction was operating.
Development of “Amylomaize”—Corn Hybrids With High Amylose Starch: II. Results of Breeding Efforts1
Authors: Bear R. P. , Vineyard M. L. , MacMasters M. M. , Deatherage W. L. 
Published: July 2010

SynopsisExtensive selection on the basis of laboratory analyses is necessary when transferring high amylose characters from source stocks into agronomically sound amylomaize hybrids. The effects of various gene combinations on the amylose‐amylopectin ratio of corn starch are discussed. Amylose content is shown to be influenced considerably by modifying factors interacting within the various endosperm genotypes.
Physiological Factors Affecting Composition of Soybeans: II. Response of Oil and Other Constituents of Soybeans to Temperature Under Controlled Conditions1
Authors: Howell Robert W. , Cartter Jackson L. 
Published: July 2010

SynopsisOil content averaged 23.2%, 20.8%, and 19.5% when day temperatures of 85°, 77°, and 70° F., respectively, were used during the pod‐filling stage. A day temperature of 85° for one week during this period increased oil content from 19.6% to 22%. Temperature treatments affected mainly the triglyceride portion of the oil. Acetone‐insolubles in the oil, protein and nonprotein nitrogen, and yield were not affected significantly.
Biochemical and Physiological Studies of Wheat Seed Pigmentation1
Authors: Miyamoto Takao , Everson E. H. 
Published: July 2010

SynopsisA close positive correlation was found between the degree of kernel color in wheat and quantity of catechin and catechin tannin present in the immature kernel. This suggested that the main pigment in the wheat seed coat was phlobaphene, a reddish brown pigment whose precursors are catechin and catechin tannin.
Multiple Selection Criteria in Soybeans1
Authors: Brim C. A. , Johnson Herbert W. , Cockerham C. Clark 
Published: July 2010

SynopsisSelection indexes involving 15 combinations of 6 characters were computed for 2 populations of soybeans. For a 1:.6 price ratio of oil to protein, the advances expected from selection based on oil and seed weight were 101 and 118% of those based on oil, protein, and yield in populations 1 and 2, respectively; and 84 and 95% of those based on all 6 characters.
Nitrogen, Phosphorus, and Potassium Requirements of Coastal Bermudagrass on a Tifton Loamy Sand1
Authors: Jackson James E. , Walker Milton E. , Carter Robert L. 
Published: July 2010

SynopsisThe rate of depletion of soil phosphorus and potassium when omitted from the fertilizer increased with increasing rates of nitrogen application. Potassium became critical sooner than phosphorus on the Tifton loamy sand. Maintenance fertilizer consisting of a 4‐1‐2 ratio produced hay yields equal to those resulting from higher amounts of phosphorus and potassium.
Dry Matter and Nitrogen Production of Legumes and Legume Associations in the Fall of the Seeding Year1
Authors: Stickler F. C. , Johnson I. J. 
Published: July 2010

SynopsisMadrid sweetclover excelled in dry matter and nitrogen production in the fall of the seeding year. Southern, nonhardy alfalfas were superior to the hardy strain, Ranger. Higher yields were obtained from medium red clover than from. Ladino white clover, but both were inferior to other legumes. Madrid sweetclover grown alone outyielded the various legume associations. Madrid was the major component of all associations in which it was included. Red clover and Ladino white clover lacked strong competitive ability under these conditions.
The Influence of Clipping on Dry Matter and Nitrogen Production of Legume Green Manures1
Authors: Stickler F. C. , Johnson I. J. 
Published: July 2010

SynopsisStubble clipping decreased dry matter and nitrogen yields of Madrid sweetclover in the fall of the seeding year. Yields of alfalfa, red clover, and Ladino white clover were increased. Removal of weed competition was considered of primary importance in favoring subsequent development of true clovers and alfalfa.
The Inheritance of Shattering in Wheat1
Authors: Porter Kenneth B. 
Published: July 2010

SynopsisThe resistance of Cimarron and Blackhull was dominant to the shatter susceptibility of Wichita. Blackhull and Wichita differed by at least two major factor pairs while multigenic differences existed between Cimarron and Wichita. Heritability estimates are presented. A correlation of .66 was obtained between field and laboratory shattering determinations.
Cytological and Fertility Relationships of Medicago sativa, M. falcata, and M. gaetula1
Authors: Sprague Ernest W. 
Published: July 2010

SynopsisInterspecific and tri‐species of hybrids of three diploid Medicago species—sativa, falcata, and gaetula—displayed regular meiosis. The three species appeared to have chromosomes of the same gross morphology. Seed set was as high in the hybrids as it was in the parental species. From a cytological point of view these three species appear to be genetic variants of the same polymorphic species.
Factors Associated with Varietal Differences in Rate of Field Drying in Corn1
Authors: Crane Paul L. , Miles S. R. , Newman J. E. 
Published: July 2010

SynopsisHusk and shank characteristics and shape or size of ear were not found to be major factors associated with differing rates of drying among strains of corn.A small but consistent difference in osmotic diffusion pressure of kernels and a more conspicuous difference in pericarp permeability were found between a fast and a slow drying hybrid. Lower osmotic diffusion pressure of kernels and more permeable pericarps were associated with more rapid drying.
Growth of U‐3 Bermudagrass Under Various Day and Night Temperatures and Light Intensities1
Authors: Youngner Victor B. 
Published: July 2010

SynopsisMinimum temperatures for growth of the U‐3 strain of bermudagrass was found to be 1280 degree‐hours F. obtained by an 8‐hour day at 60° F. and a 16‐hour night at 40° F. Cold weather‐induced dormancy or loss of chlorophyll was found to be caused by an interaction of low temperatures with sunlight of 7000 footcandles or more intensity. Chlorophyll loss under high intensity light varied directly with decrease in day and/or night temperatures.
Seed Coat Structural Differences that Influence Water Uptake and Seed Quality in Hard Seed Cotton1
Authors: Christiansen Meryl N. , Moore R. P. 
Published: July 2010

SynopsisWater enters the seed by an opening in the palisade layer at the chalazal end. In hard seed this opening is made impervious by a chalazal cap and a seal between the cap and the palisade layer. In water at 80° C. the cap and seal become permeable, water enters and the palisade layer swells. Water entering through seed coat breaks has a similar effect on the palisade layer adjoining the chalazal cap.
The Interaction of Nitrogen and Moisture on Cotton Yields and Other Characteristics1
Authors: Scarsbrook C. E. , Bennett O. L. , Pearson R. W. 
Published: July 2010

SynopsisCotton produced a 2‐year average of 1,794 pounds of lint per acre where a high rate of irrigation and 240 pounds per acre of nitrogen were added. Nitrogen increased the efficiency of water utilization. High yield was associated with a high nitrogen content of the plants.
Influence of Depth of Planting, Seed Size, and Variety on Emergence and Seeding Vigor in Alfalfa1
Authors: Beveridge J. L. , Wilsie C. P. 
Published: July 2010

SynopsisEmergence of seedlings of three varieties of alfalfa decreased as depth of seeding was increased. Under field conditions emergence was considerably less than under greenhouse conditions. Seedling vigor was correlated with seed size, but there was no consistent relationship between seed size and emergence. Vernal and Ranger gave somewhat better emergence than DuPuits under field conditions, but DuPuits was slightly superior to the others in average weight of top growth of seedlings 56 days after planting.
A Suggested Method for Determining Purity of Certain Chaffy‐Seeded Grasses1
Authors: Harlan Jack R. , Ahring Robert M. 
Published: July 2010

SynopsisA method for determining purity of certain chaffy‐seeded grasses based upon microprocessing subsamples to clean caryopses and converting to a “pure seed” fraction is proposed. The method is significantly more sensitive for seed samples of high purity and much more reliable for samples of low purity than the official method now in use. The proposed method is also much faster and less expensive and does not require the services of a highly trained analyst.
Yield Components in a Lemhi × Thatcher Wheat Cross1
Authors: McNeal F. H. 
Published: July 2010

SynopsisLemhi and Thatcher varieties of spring wheat differed for all characters studied except heads per plant. The intensity of red kernel color among the segregates had no influence on plant yield or on the various yield components. Heads per plant and kernels per head were more closely associated with yield per plant than was kernel weight.
Radiant Energy Exchange in a Corn Field1
Authors: Tanner C. B. , Peterson A. E. , Love J. R 
Published: July 2010

SynopsisMeasurements of net radiant energy available for evaporation of water from soil under corn show that when corn is fully grown, the maximum evaporation may constitute 25 to 50% of the total evapotranspiration, depending upon the population and method of planting. Fully grown corn does not provide sufficient interception of radiation to assure that the potential evapotranspiration condition of a fully covered surface is realized.
The Effect of Soil Temperature, Soil Moisture, and Flowering on the Persistency and Forage Production of White Clover Stands1
Authors: Crowder L. V. , Craigmiles J. P. 
Published: July 2010

SynopsisForage yield was significantly correlated with soil moisture and temperature. The effect of temperature was independent of moisture, high temperature reducing growth regardless of moisture. Flowering habits varied with the type of clover and climatic factors. By the end of August both types had passed their maximum flowering period and peak of forage production, soil temperatures were maximum, and soil moisture critical. These stresses weakened the clover, diseases became prevalent, and many stolons died.
Relation of Seed Dormancy of Indian Ricegrass (Oryzopsis hymenoides (Roem. & Schult) Ricker.) to Age and Treatment1
Authors: Rogler George A. 
Published: July 2010

SynopsisNew‐seed dormancy was pronounced in Indian ricegrass. Germination increased with age of seed up to 6 years with a gradual decrease thereafter for 11 years. Wide strain and year of harvest variations were evident. Soaking l‐ and 2‐year‐old seed in water at 2° to 4° C. for 40 days greatly increased germination.
Influence of Management Systems and Cover Crops on Soil Physical Conditions1
Authors: Ram Dip N. , Zwerman P. J. 
Published: July 2010

SynopsisHigh organic matter return resulted in an increase of soil aggregation of 30% or more. It also resulted in a decrease of bulk density from 1.3 to 1.1. High organic matter systems retained more soil moisture and soil physical condition tended to fluctuate less throughout the season.
Influence of Biuret and Urea Fertilizers Containing Biuret on Corn Plant Growth and Development1
Authors: Wilkinson S. R. , Ohlrogge A. J. 
Published: July 2010

SynopsisBiuret was toxic to germinating seeds and caused injury to developing corn seedlings. Hyponasty, frayed leaf margins, and interveinal leaf chlorosis in immature leaves were symptoms associated with this injury. Crystalline urea did not cause this injury to developing corn seedlings. Placement away from seed minimized the probability of biuret injury.
Boron Toxicity in Several Turfgrass Species
Authors: Oertli J. J. , Lunt O. R. , Youngner V. B. 
Published: July 2010

SynopsisFive grass species clipped at frequent intervals showed little decline in vigor because of high boron supplies. In another experiment with six grass species boron was observed to accumulate in tip areas where injuries were observed first. Species with rapid boron accumulation showed injury first. Because of the accumulation of boron in tips, most of the boron in grasses, when levels are high, would be removed periodically through the practice of mowing.
Effect of Time of Fertilizer Application on Yield and Nutrient Uptake of Coastal Bermudagrass on Cecil Sandy Loam1
Authors: Morris H. D. , Celecia Juan F. 
Published: July 2010

SynopsisNitrogen applied in 4‐split applications resulted in higher forage yields, greater uptake of plant nutrients, and more favorable seasonal forage distribution of Coastal bermudagrass than any other type of nitrogen application. Annual spring applications of P and K were more efficient than fall applications or large, single applications at time of establishment.
Sources of Sulfur for Crop Plants in Michigan and Effect of Sulfur Fertilization on Plant Growth and Composition1
Authors: Cressman H. K. , Davis J. F. 
Published: July 2010

SynopsisCrop yields or the protein content of the crops were not increased by sulfur amendments. Potatoes and red clover showed increased sulfur contents from additions of sulfur in the fertilizer when grown on an infertile sandy soil in Northern Michigan. This increased sulfur in the potatoes existed mainly in the sulfate form. The amount of sulfur in the precipitation average 10.1 pounds per acre annually. The amount of sulfur dioxide in the atmosphere was more pronounced in industrial areas of the state.
Turfgrass Ecology. Effects of Mowing, Irrigation, and Nitrogen Treatments of Agrostis palustris Huds., ‘Seaside’ and Agrostis tenuis Sibth., ‘Highland’ on Population, Yield, Rooting, and Cover1
Authors: Madison John H. 
Published: July 2010

SynopsisIncreasing nitrogen increased yield, verdure (quantity of green turf), and chlorophyll, and decreased rooting. Frequent irrigation (5 times per week) increased population and chlorophyll, and decreased verdure and rooting. Frequent mowing (5 times per week) decreased verdure and rooting in the 15‐ to 30‐cm. soil layer. Shorter mowing increased population, and decreased verdure and rooting.
Effect of Rye Winter Cover Crop on Soil Structure1
Authors: Benoit R. E. , Willits N. A. , Hanna W. J. 
Published: July 2010

SynopsisThe roots of a rye cover crop were primarily responsible for an improved physical condition of a Nixon sandy loam. Organic matter additions consisting only of the rye top growth had no measurable effect. Three years of cover cropping were necessary before any soil physical differences could be measured.
Crop Response to Calcium Polyphosphate Glass and Some of Its Degradation Products1
Authors: Terman G. L. , DeMent J. D. 
Published: July 2010

SynopsisCalcium polyphosphate glass and certain reaction products of ammonia and partially hydrolyzed glass were less available for early growth of crops grown in greenhouse pots than concentrated superphosphate. Granular, partially hydrolyzed calcium polyphosphate (14 to 18% of its phosphorus water soluble) was as effective for oats as ammoniated concentrated superphosphate having a much higher proportion of watersoluble phosphorus.
Water Stress and Plant Growth1
Authors: Kramer Paul J. 
Published: July 2010

SynopsisPlant growth is controlled directly by plant water stress and only indirectly by soil water stress. Plant water stress depends on the relative rates of water absorption and water loss rather than on soil water supply alone, hence it is not safe to assume that a given degree of soil water stress always will be accompanied by an equivalent degree of plant water stress. Plant water stress should be measured directly in research on the effects of water supply on plant growth and plant processes if the results are to be interpreted correctly.
Residual Nitrogen from NH4NO3 Fertilizer and from Alfalfa Plowed under1
Authors: Boawn Louis C. , Nelson J. L. , Crawford Carl L. 
Published: July 2010

SynopsisResidual N from NH4NO3 averaged 44% of the original application after 1 year but was insignificant after 2 years. For a 5‐year period, N uptake from the alfalfa area exceeded that from virgin area by 341 pounds per acre.
Water Use by Several Crops in a Weighing Lysimeter1
Authors: England C. B. 
Published: July 2010

SynopsisA modified pan evaporimeter measured field evapotranspiration rates under pasture, corn, oats, and alfalfa. Monthly and annual water use totals illustrate differences in seasonal patterns among the crops. Samples of hourly and daily rates reflect the influence of meterological elements measured in the surrounding area.