Author: Damien J. Fewer
Publisher:
ISBN:
Category : Crops and nitrogen
Languages : en
Pages : 218

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Author: Rodolfo Moreno Dahme
Publisher:
ISBN:
Category : Nitrates
Languages : en
Pages : 326

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Author: Joseph Emory Davis
Publisher:
ISBN:
Category : Crops and nitrogen
Languages : en
Pages : 74

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Wheat is the 3rd most prominent crop in the USA and approximately 50% is exported annually. Nebraska wheat production is 11th in the country, and it plays a major role in the state's agricultural economy, especially in western NE. Generally, wheat is grown under dryland conditions and the region grows much more wheat on unirrigated land than it does on irrigated. However, deficit irrigation has shown great value in producing high yielding wheat with much less water than needed for other crops. Finding new ways to leverage irrigation in wheat production may help address the need to produce food with fewer inputs. The objective of this project was to evaluate the effect of nitrogen, irrigation, and cultivar on grain yield and quality. A randomized complete block with split-split plots was used as the design for this experiment. Six cultivars were (Anton, Armour, Overland, Settler-CL, Snowmass, Wesley), five nitrogen treatments (0, 30, 60, 90, 120 lbs of N per acre) and three irrigation treatments (0, 6, 12 inches) were used. Plots were harvested when mature using small plot combines equipped with onboard weighing systems. Differences between years had a dramatic effect on yield across all treatments and all locations. However, when correcting for rainfall, location didn't have a substantial impact on yield. Irrigation events only occurred at the Scottsbluff location. Irrigation had a significant effect when compared to dryland production, but the effect of 6 and 12-inch irrigation treatments was subtler and at times not significant. Nitrogen had little effect on yield or predicted grain protein. Variety had a significant effect on both yield and predicted grain protein, and this trend was consistent across years and locations. Test weight (TWT) was not responsive to nitrogen or irrigation, but varietal differences were significant and some trends remained constant from year to year. However, TWT trends did not align between locations in either year. Gluten response was very similar to protein, but the response was much less dramatic.

Author: Rodolfo Moreno Dahme
Publisher:
ISBN:
Category : Nitrogen
Languages : en
Pages : 342

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Author: Wade H. Shafer
Publisher: Springer Science & Business Media
ISBN: 1461573912
Category : Science
Languages : en
Pages : 386

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Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thougtit that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 31 (thesis year 1986) a total of 11 ,480 theses titles trom 24 Canadian and 182 United States universities. We are sure that this broader base tor these titles reported will greatly enhance the value ot this important annual reterence work. While Volume 31 reports theses submitted in 1986, on occasion, certain univer sities do re port theses submitted in previousyears but not reported at the time.

Author: Henry Joseph Mascagni
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 32

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Author: C. K. Mutchler
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 426

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Author: Mylen G. Bohle
Publisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 280

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Hard red winter wheat has the potential to be an alternative crop in the Pacific Northwest, however percent grain nitrogen has been unacceptably low and grain yields have been about only 80% of soft white winter wheat. During the late spring and the summer months there is usually little rainfall, therefore moisture and nitrogen needed for grain fill must be taken up from the subsoil. The interaction between rainfall distribution and available nitrogen and moisture at different depths in the soil during grain fill was thought to be the problem for low percent grain nitrogen in this mediterranean climate. Dryland field experiments were conducted with the hard red winter wheat cultivar Nanser' at the Sherman Branch Expeilment Station at Moro, north-central Oregon, during the crop years 1983 and 1984. Plots were fall-fertilized with 0 (low N) and 80 (high N) kg/ha of nitrogen fertilizer and 0 and 20 kg/ha of phosphorus fertilizer. At jointing and at anthesis, 0 and 20 kg/ha of nitrogen fertilizer were applied with water, to the 0, 60 and 120 cm soil depths to determine the effects upon percent grain nitrogen, grain yield, plant nitrogen yield and nitrogen harvest index (NHI) at harvest. The 80 kg/ha fall-applied N rate was the factor most responsible for increasing percent grain nitrogen and grain nitrogen yield. Grain yield was increased only in 1984. Under low N fertility conditions, percent grain nitrogen was increased by the 20 kg/ha N rate applied at anthesis in 1983. Grain yield was increased with the 20 kg/ha N rate applied at jointing, both years, and was limited if phosphorus fertilizer was not present with the anthesis timing in 1983. Grain nitrogen yield was increased by P fertilizer and the 20 N rate (regardless of timing) in 1983, and when N was applied at jointing in 1984. Under high N fertility conditions, 20 N rate applied at jointing increased percent grain N both years, and grain nitrogen yield in 1983. Grain yield was not increased. In general, percent grain N in the high N fertility plots and the 1984 low N fertility plots was positively correlated to the nitrogen yield of all the plant parts, except chaff in 1984. Percent grain N was negatively correlated to grain NHI under high N fertility conditions, but positively correlated under 1983 low N conditions. Percent grain N was positively correlated to most other plant parts' NHI under high N fertility conditions in 1983 and 1984 and 1984 low N fertility conditions. Under low N fertility conditions in 1983, percent grain N was positively correlated to grain NHI. Deep placement did not significantly increase percent grain N, grain yield or grain nitrogen yield. Under high N fertility conditions in 1984, more nitrogen remained in some of the straw plant parts at the 60 cm depth with the anthesis timing compared to jointing.

Author: Margaret K. Kilibwa
Publisher:
ISBN:
Category : Grain
Languages : en
Pages : 444

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Author: Dieter Geesing
Publisher:
ISBN: 9783897913042
Category :
Languages : en
Pages : 87

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