bluuebunny/crossref_metadata_2025_split huggingface dataset:
Maturity in Smooth Bromegrass1
Authors: Grabe Don F. 
Published: July 2010

SynopsisSome seeds were capable of germination 5 days after flowering. Maximum germination, dry weight and seedling vigor were attained in 17 or 18 days. Moisture content decreased slowly from over 60% to 47% at the time functional maturity was reached. After this time, loss of moisture was accelerated and the seed entered the ripening phase.
Germination and Storage of Pea (Pisum sativum L.) Pollen1
Authors: Warnock Stephen J. , Hagedorn D. J. 
Published: July 2010

SynopsisVarious combinations of sugar‐agar concentrations were tested as germinating media for pollen of Pisum sativum L. The best was 1% agar—15% sugar; and the optimum pH was 7.0. Addition of yeast extract to the germinating medium resulted in stimulated pollen tube growth. Longevity of pea pollen under several storage conditions was studied and results indicated that storage at —5° C. over a saturated solution of MgCl2 · 6H2O would keep pollen viable for as long as 15 months. Germinability on artificial media was a simple and positive test for pollen viability including ability to set seed.
Nitrogen Uptake by Ladino Clover‐Orchardgrass Pasture Under Irrigation as Influenced by Moisture, Nitrogen Fertilization and Clipping Treatments1
Authors: Nelson C. E. , Robins J. S. 
Published: July 2010

SynopsisOn shallow Ephrata fine sandy loam soil, the nitrogen uptake in the grass and clover was greatest from midsummer irrigation at 7‐ to 11‐day frequency and 12‐inch clipping height than a longer frequency and less height. Total nitrogen uptake increased in the grass and decreased in the clover with increased nitrogen fertilizer rates. The clover supplied 99 pounds of nitrogen per acre to the grass when no fertilizer nitrogen was applied. The nitrogen in the grass, other than that from fertilizer nitrogen, increased in relationship to clover yields.
The Constituent Differential Method of Estimating Species Composition in Mixed Hay1
Authors: Cooper C. S. , Hyder D. N. , Petersen R. G. , Sneva F. A. 
Published: July 2010

SynopsisA method is presented for determining the species composition by weight of a two‐component forage mixture when the two components contain different concentrations of a given constituent. It consists of measuring the constituent concentration of a large sample from each plot and the species components from small samples taken at random from plots treated alike. Species composition of the large sample is then computed using appropriate formulae. The use of dry matter, calcium and crude protein to estimate botanical composition was investigated. The method was found to be more efficient than hand separation.
Inheritance of Branched Raceme and Vestigial Flower in Alfalfa1
Authors: Dudley J. W. , Wilsie C. P. 
Published: July 2010

SypnosisF3 F4, BC S1, BC S2, and other populations which segregated for the characters branched raceme and vestigial flower were studied. Gene symbols A, Br, Ra, and Ra' were proposed for genes conditioning branched raceme. The symbols D, V. F, and F' were proposed for genes conditioning vestigial flower. A. Br. D, and V were assumed to be inherited in a tetrasomic manner with chromosome segregation. Ra and Ra' were assumed to behave as duplicate disomic genes as were F and F'
Factors Influencing Heat Resistance in Oats1
Authors: Coffman Franklin A. 
Published: July 2010

SynopsisHeat resistance in oats (exposure to 48° to 51½° temperatures for 45 minutes) was highest after exposure to bright sunlight, at the early booting stage, at 50 days of age, in slow‐growing winter varieties with small culms, in early maturing varieties and in winter hardy varieties. Warm temperatures prior to heat treatment increased heat resistance only in winter varieties. There was no correlation between heat resistance and genetic conditioned disease resistance or morphological characteristics but most heat resistant varieties were awned and dark‐colored kernels. Resistance to heat is an inherited character and susceptibility appears to be dominant.
A Comparison of Birdsfoot Trefoil‐Bluegrass and Ladino Clover‐Bluegrass for Pasture: I. Response of Lambs1
Authors: Davis R. R. , Bell D. S. 
Published: July 2010

SynopsisDuring the first grazing year, a Ladino clover‐bluegrass mixture was more productive in terms of carrying capacity, gain per acre, and TDN consumption per acre than an Italian birdsfoot trefoil‐bluegrass mixture. The trefoil mixture was more productive the remaining two years of the test. Ladino clover was eliminated from the mixture by drouth. Continuous grazing killed the birdsfoot trefoil. The trefoil remained in the mixture when grazed with a rotation system of about two weeks grazing and four weeks rest.
Recovery by Eleven Crops of Oats of Phosphorus Applied to Pot Cultures of Five Soils1
Authors: Moore D. G. , Attoe O. J. , Rich C. I. 
Published: July 2010

SynopsisRecovery of applied phosphorus by 11 oat crops ranged from 51 to 72%, and recovery by the first crop was less than 20% from the silt loams and about 35% from a sand. Total percentage of applied phosphorus recovered by cropping and acid and alkali extractions combined ranged from 74 to 100%. Phosphorus applied at 22 to 589 ppm. to Spencer silt loam gave nearly the same percentage recovery by the 11 crops.
Comparative Performance of Various Combinations of F1 and F2 Generation Seed of Maize1
Authors: Grogan C. O. , Zuber M. S. 
Published: July 2010

SynopsisThe presence of 20% or more of F2 female single cross seed in an original F1 double cross hybrid was necessary to obtain a statistically significant reduction in yield. The vigorous F1 plants partly compensate for the loss effected by the F2 plants.
Number of Chloroplasts in the Guard Cells of Inbred Lines of Tetraploid and Diploid Sugar Beets1
Authors: Dudley John W. 
Published: July 2010

SynopsisThe average number of chloroplasts per guard cell was 11.8 ± 0.11 for tetraploid and 6.6 ± 0.11 for diploid inbred lines of sugar beets. These results indicated that diploids and tetraploids could be rapidly and accurately separated by counting chloroplasts in the guard cells.
Nitrogen and Phosphorus Fertilization of Peanuts (Arachis hypogaea)1
Authors: Wahhab A. , Muhammad F. 
Published: July 2010

SynopsisThe use of 37.5 pounds of available P2O5 gave an increased yield of 257 pounds of nuts per acre. Under favourable conditions up to 520 pounds of nuts could be obtained. N alone did not increase the yield of nuts significantly. N reduced the beneficial effect of P when used in combination.
Seed Moisture Relationships and Germination Behavior of Acid‐Scarified Bahiagrass Seed1
Authors: Williams Rufus C. , Webb Burleigh C. 
Published: July 2010

SynopsisAn increase in germination of Bahiagrass resulted from scarification with sulphuric acid, although neither water intake nor degree of swelling was improved. The increase in germination from scarification was not related to light.
Response of Creeping Bentgrass Putting‐Green Turf to Urea‐Form Compounds and Other Nitrogenous Fertilizers1
Authors: Musser H. B. , Duich J. M. 
Published: July 2010

SynopsisAmmonium sulfate in ten split applications increased total growth but had no significant effect on turf quality over natural organics and urea‐form compounds. Seasonal growth distribution was more uniform when slowly available nitrogen materials were used although significant differences in growth rates were evident in the early part of the season. Data indicate that the value of any form of nitrogen depends primarily on how it is used.
Making Agronomy Attractive to College Students
Authors: Bertramson B. R. 
Published: July 2010

SynopsisProfessors in 25 agronomy departments report that agronomy is made attractive to students by superior teaching and an effective and sympathetic advisory system. Moral support and technical assistance from the staff in managing the affairs of the Agronomy Club helped to create esprit de corps. Excellent educational and financial projects for Agronomy Clubs are briefly summarized.
Effect of Variable Row Spacings and Plant Populations on Peas Grown for Processing and on the Subsequent Crop of Alfalfa1
Authors: Vittum M. T. , Lathwell D. J. , Peck N. H. , Sayre C. B. 
Published: July 2010

SynopsisOver the 3‐year period, 1952 to 1954, yields of canning peas increased as plants per acre increased, while yield per plant decreased. This response was almost completely independent of both row spacing and spacing within the row. Yields of alfalfa hay were relatively unaffected by stand density and method of seeding a companion crop of peas.
Nitrogen Fertilization of Alfalfa‐Grass Mixtures1
Authors: Parsons J. L. 
Published: July 2010

SynopsisNitrogen applications to a vigorous alfalfa‐orchardgrass sod on Wooster silt loam produced more hay but increased the grass at the expense of the alfalfa. The yield, crude protein percentage, and botanical composition of alfalfa‐bromegrass and alfalfa‐timothy sods were not affected by nitrogen.
The Effect of Stand Density on Physiological and Morphological Characteristics of Crimson Clover1
Authors: Knight W. E. , Hollowell E. A. 
Published: July 2010

SynopsisA close relationship existed each year between stand density and early growth. Dense stands produced substantial quantities of high quality forage in the fall. Early growth appeared to be related to higher minimum and lower maximum soil temperatures, which were characteristic of the thick stands, as well as to the direct effect of plant competition. Stand density had a marked effect on the number of vegetative stems and the number of seed heads produced.
Growth and Morphological Characteristics of Induced Autotetraploids of Lespedeza Cuneata, L. Stipulacea and L. Striata, and Interfertility of These Species at Diploid and Tetraploid Levels1
Authors: Brinkley R. M. , Hanson C. H. , Cope W. A. 
Published: July 2010

SynopsisThe induced autotetraploids had larger leaflets, stems, flowers, and seeds and lower yields of hay and seed than the respective parental diploids. Progenies from chasmogamous flowers gave higher yields than progenies from cleistogamous flowers, indicating heterosis. Viable hybrids were not obtained from any of the various combinations of diploid and tetraploid matings attempted. In ovaries of the diploid mating of L. Stipulacea × L. cuneata collapse of the ovule began at about the sixth day. The endosperm appeared degenerate.
Multi‐variable Equations Describing Fertility‐Corn Yield Response Surfaces and Their Agronomic and Economic Interpretation1
Authors: Baird Bruce L. , Mason D. D. 
Published: July 2010

SynopsisRepresentative polynomial equations and contour lines describing yield response surfaces obtained in corn fertility studies are presented for Norfolk and Portsmouth soils. Methods of interpretation are discussed. Increases in yield were attributed to nitrogen at each of the 23 locations on the former and at 10 of the 17 on the latter soils. P or K increased yields at seven locations on the Portsmouth soils but at none on Norfolk soil.
Symposium on Forage Evaluation: IV. Animal Variation and Measurement of Forage Quality1
Authors: Mott G. O. 
Published: July 2010

SynopsisIn grazing trials, quality of forage is measured by the output per animal. Variations among pastures and among animals are the main sources of experimental error but variation in grazing pressure, in previous treatment of the animals, and weighing errors also may make a contribution.
Generalization of Yield Equations in Two or More Variables: I. Theoretical Considerations1
Authors: Jensen Don , Pesek John 
Published: July 2010

SynopsisParticular quadratic yield equations which define crop yields in the restricted sense of given fixed soil fertility levels may, in theory, be generalized to other forms of the quadratic equation which define crop yields over a range of initial soil fertility levels. The similarity of the coefficients of the terms derived from different generalized equations may be tested by assuming appropriate null hypotheses and testing them by applicable statistical methods.
Effect of 2,4‐D on the Growth, Seed Production, and Seed Viability of Rose Clover1
Authors: Williams W. A. , Leonard O. A. 
Published: July 2010

SynopsisAmine and ester formulations of 2,4‐D did not reduce the germination of seed of rose clover, Trifolium hirtum All., produced after applications made during the rosette and early bud stages. However, seed and forage yields were reduced by both formulations, the ester formulation being more toxic than the amine. Both formulations drastically reduced seed production and germination when applied during the bloom stage. Neither form caused significant damage if applied when seed was ripe.
Effects of the Genes su1, su2, and du on Carbohydrates in Developing Maize Kernels1
Authors: Cameron James W. , Cole Donald A. 
Published: July 2010

SynopsisThe gene combinations su1 du and su1 su2, as contrasted to su1 alone, slowed the accumulation of starch in developing kernels on several inbred and hybrid backgrounds. Sugars and water‐soluble polysaccharides were not always affected, but improved eating quality was often recognized. When earworm had been present, the incidence of mold was increased on mature seed ears of all genotypes, but especially on ears of su1 su2.
Foliar and Soil Applications of Iron Compounds to Control Iron Chlorosis of Grain Sorghum1
Authors: Withee L. V. , Carlson C. W. 
Published: July 2010

SynopsisSoil applications of iron compounds to correct iron deficiency chlorosis of grain sorghum in southwestern Kansas were somewhat effective but economically impractical. Spraying chlorotic grain sorghum with 3 sprays of 4% ferrous sulfate was an effective method of improving the yield of grain. Thirty gallons per acre of the spray solution were required.
Planting Methods for Improved Stands of Corn and Soybeans on Clay and Silt‐Loam Soils1
Authors: Haynes J. L. , Johnson W. H. , Stringfield G. H. 
Published: July 2010

SynopsisRemoval of dry surface soil and pressing seed into the soil were advantageous to seedling emergence of corn and soybeans on winter‐plowed clay. Reduction of voids and clods and pressing the seed were advantageous on spring‐plowed clay. Reduction of voids was ad,antageous on spring‐plowed silt loam.
Precipitation‐Yield Relationships in Dryland Wheat Production on Medium to Fine Textured Soils of the Southern High Plains1
Authors: Army T. J. , Bond J. J. , Van Doren C. E. 
Published: July 2010

SynopsisOn the basis of long term weather records, alternate wheat‐fallow and wheat‐sorghum‐fallow can be expected to produce more than 10 bushels of wheat per acre approximately 80% of the time. Continuous cropping can be expected to produce more than 10 bushels of grain only 50% of the time. Other calculated frequencies of yield occurrence similarly favored the use of fallow for dryland wheat production.
Effect of Subsoiling and Deep Fertilizer Placement on Yields of Corn in Iowa and Illinois1
Authors: Larson W. E. , Lovely W. G. , Pesek J. T. , Burwell R. E. 
Published: July 2010

SynopsisSubsoiling to 16 and 24 inches depth did not increase corn yields in Iowa during 1955, 1956, and 1957. In Illinois, Subsoiling to 12 and 18 inches depth produced a significant corn yield response at the lower depth in only 2 out of 14 experiments in 1955 and 1956. Fertilizer placed deep in the subsoiled channel was not as effective as fertilizer plowed under in the Iowa experiments.
Aspects of Growth by Some Species of Trifolium Following Gamma Irradiation of the Seeds
Authors: Jones Ina , Plummer G. L. 
Published: July 2010

SynopsisExposure to approximately 7100 r distinctly associated enhanced vigor with ionizing radiation in certain species. Increased height, up to 9%, was observed in T. pratense. Enhanced size does not appear to be associated with a particular height group.
Soil Fertility and the Organic Composition of Plants, Lysine, Arginine and Aspartic Acid Variations1
Authors: Reed Lester W. , Sheldon Victor L. , Albrecht William A. 
Published: July 2010

SynopsisLysine and arginine contents of bromegrass varied inversely with concentration of calcium and potassium in growth medium. Aspartic acid accounted for much of increased nitrogen content of bromegrass when heavily fertilized with nitrogen.
Effect of Clipping and Nitrogen Fertilization on Forage and Grain Yields of Spring Oats1
Authors: Gardner F. P. , Wiggans S. C. 
Published: July 2010

SynopsisDelayed or repeated clipping beyond the 4‐leaf stage increased forage yield of two oat varieties. Single clippings at the 4‐, 5‐, and 7‐leaf stage reduced grain yield by 9, 28, and 98%, respectively. Clipping retarded floral development and reduced lodging and test weight. Nitrogen fertilization did not compensate for the deleterious clipping effect.
Viruses of Red Clover in Wisconsin1
Authors: Hanson E. W. , Hagedorn D. J. 
Published: July 2010

SynopsisViruses inciting red clover vein mosaic, pea common mosaic, bean yellow mosaic, Wisconsin pea streak, alsike clover mosaic, and alfalfa mosaic were isolated repeatedly from naturally infected red clover. The first three were most prevalent. The symptoms incited by each virus varied sufficiently from clone to clone so that it was frequently impossible to distinguish the different diseases on the basis of symptoms. Clones differed in their reactions to the viruses studied; some showed a high level of resistance.
Stability and Concentration of Metal Chelates, Factors in Iron Chlorosis of Plants
Authors: Brown J. C. , Tiffin L. O. , Specht A. W. , Resnicky J. W. 
Published: July 2010

SynopsisFour metal chelates, with different stability constants for Fe, were placed in nutrient solution. Three plant species were grown on these solutions. The absorption of Fe by one plant species appeared related to the stability constants of the metal chelates. There was no relationship between the stability constants of the metal chelates and the absorption of Fe by the other plant species. The stability of metal chelates may be altered at the root.
An Improved Nutrient Culture Technique for Growing Corn under Greenhouse Conditions1
Authors: Hageman R. H. , Flesher Donna , Wabol J. J. , Storck D. H. 
Published: July 2010

SynopsisA nutrient culture technique has been devised for the production of vigorous healthy young corn plants under greenhouse conditions. The major innovation is the use of Amberlite IRC‐50 resin to buffer the nutrient media in the pH range 4.2 to 4.8. In this range, ferrous iron can be maintained in the media and phosphate concentrations raised to levels (0.5 mM. or higher) adequate for maximum growth, without inducing chlorosis.
The Sulfur Status and Sulfur Supplying Power of Oregon Soils1
Authors: Harward M. E. , Chao Tsun Tien , Fang S. C. 
Published: July 2010

SynopsisLevels of organic S in soils were found to range from < 100 to > 700 ppm. Correlation coefficients for relative yields of alfalfa were in the order: sulfur “A” values, % S in plant, and extractable S plus sulfate release on incubation. A sulfur “A” value of 20 pounds per acre and a plant content of 0.22% S represented levels above which little response occurred. S application may affect nitrogen relationships of alfalfa.
Yield Response, Residual Nitrogen and Clover Content of an Irrigated Grass‐Clover Pasture as Affected by Various Rates and Frequencies of Nitrogen Application1
Authors: Maas E. F. , Webster G. R. , Gardner E. H. , Turley R. H. 
Published: July 2010

SynopsisGreatest yield response occurred in the month of application while the residual effect in the second month was small. Dividing the N among more frequent applications gave greater uniformity of yield but no increase. Frequency of N applications had no effect on the N content of the forage or the percentage clover. An increase in the N application rate increased the N content of the forage in spite of a reduction in the clover content.
Effects of Management on Food Reserves, Root Rot Incidence and Forage Yields of Medium Red Clover, Trifolium Pratense L.1
Authors: Colville W. L. , Torrie J. H. 
Published: July 2010

SynopsisDifferences in the incidence of root rot and in the percentage total available carbohydrates in the roots explain in part the failure of red clover stands due to faulty management practices. Forage yields are dependent upon management procedure. Climatic factors are closely related to stand failures.
Potassium Fertilization of Intensively Manage Grasses under Humid Tropical Conditions1
Authors: Vicente‐Chandler José , Pearson Robert W. , Abruña Fernando , Silva Servando 
Published: July 2010

SynopsisGrass yields responded strongly to yearly applications of up to 400 pounds of K per acre and at a slower rate to even higher applications. With 800 pounds of K, exchangeable soil K content was maintained and two‐thirds of the applied K was recovered in the forage. At the 1600‐pound rate, recovery in the forage was reduced but exchangeable soil K content was increased. K content of the forage increased with rates and with yields.
Effect of Precipitation and Long Term Nitrogen Fertilization on Nitrogen Uptake, Crude Protein Content and Yield of Bromegrass Forage1
Authors: Colville W. L. , Chesnin Leon , McGill D. P. 
Published: July 2010

SynopsisAverage yields of forage were increased up to 380% with annual applications of nitrogen fertilizer. Applications of 120 pounds per acre of nitrogen resulted in the most efficient use of rainfall. Yields of forage were decreased at the higher levels of precipitation. Crude protein content of the forage was increased from 8.96 to 14.83% by adding 160 pounds per acre of N. Nitrogen recovery averaged between 54.7 to 73.9%.
Statistical Technique for Correcting Botanical or Floristic Estimates in Pasture Research1
Authors: Tiwari D. K. , Jackobs J. A. , Carmer S. G. 
Published: July 2010

SynopsisThe bias associated with visual estimates can be removed if the true values for a few of the samples estimated can be determined. Equations for calculating the regression of the estimates on the actual values are given.
Effect of Nitrogen and Magnesium Nutrition on Pod and Seed Development in Canning Peas1
Authors: Klacan G. R. , Berger K. C. 
Published: July 2010

SynopsisNumbers of pods and seeds were influenced by levels of nitrogen and magnesium. Low nitrogen early and high nitrogen late were detrimental to number of pods, seeds, and seed size. Deficient magnesium levels reduced both numbers of seeds and pods, while a slight deficiency only reduced numbers of pods.
Forage Yield and Composition of Teosinte, Corn, and Forage Sorghum Grown Under Irrigation1
Authors: Schmidt W. H. , Colville W. L. 
Published: July 2010

SynopsisTeosinte produced more forage on a wet basis but less dry matter per acre than either corn or forage sorghum. Neither forage quality nor yield was sufficiently great to place teosinte with corn or forage sorghum as a silage crop in irrigated regions of the central Great Plains.
Effects of Harvest Method and Moisture Content on Seed Quality of Smooth Bromegrass1
Authors: Horning E. V. , Canode C. L. 
Published: July 2010

SynopsisSmooth bromegrass seed containing from 65 to 12.5% moisture was harvested by 2 methods. Seed harvested by the simulated‐windrow method gave maximum seed weight, weight per shoot, and vigor score at 45.2% moisture; maximum seedling emergence at 52.1% moisture; and maximum laboratory germination at 60.8% moisture. Seed harvested by the simulated‐combine method gave maximum seed weight at 34.1% moisture, but maximum laboratory germination, seedling emergence, weight per shoot, and vigor score at 24.1% seed moisture content.
Effect of Shoreline Fluctations on Grasses Associated with Upstream Flood Prevention and Watershed Protection1
Authors: Gamble M. D. , Rhoades Edd D. 
Published: July 2010

SynopsisKnowledge of inundation tolerance of range and pasture grasses in the Southern Great Plains permits the development of criteria for establishing and managing grasses in the temporary impoundment basins of floodwater‐retarding structures. Grasses are listed in 4 major inundation tolerance groups as follows: Very strong—ln excess of 20 days; Strong—10 to 20 days; Moderate—5 to 10 days; and Mild—up to 5 days.