The Effect of Certain Nitrogenous Fertilizers on the Chemical and Vegetative Composition and Yield of Pasture Plants PDF Download
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Author: James Frank Eheart
Publisher:
ISBN:
Category : Forage plants
Languages : en
Pages : 52
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Author: James Frank Eheart
Publisher:
ISBN:
Category : Forage plants
Languages : en
Pages : 52
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Author:
Publisher:
ISBN:
Category : Soil surveys
Languages : en
Pages : 420
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Author: David Charles Whitehead
Publisher: CABI Publishing
ISBN:
Category : Science
Languages : en
Pages : 224
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Nitrogen transformations in grassland ecosystems. The nitrogen cycle and sources of nitrogen. Uptake and assimilation of nitrogen by grass. Symbiotic tixation by legumes. Transfer of symbiotically fixaed nitrogen to grass. Consumption of nitrogen by ruminants and its removal in livestock products. Return of nitrogen in animal excreta. Non-symbiotic nitrogen in soil organic matter. Release of mineral nitrogen from plant and animal residues and soil organic matter. Nitrification, and immobilization in non-exchangeable form, of ammonium nitrogen. Loss of nitrogen by leaching. Gaseous losses of nitrogen. The yield response of grass swards to fertilizer nitrogen.Effects of fertilizer nitrogen on composition and quality of herbage.
Author: Robert W. Pearson
Publisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 24
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Nitrogen fertilizer broadcast in November or December on widely different soils at seven locations in Alabama, Georgia, and Mississippi during 1955-59 was only 49 percent as effective as nitrogen fertilizer applied the following spring when measured by corn yields. In terms of nitrogen recovered, the relative effectiveness was 62 percent. There were no consistent differences among the five nitrogen sources applied in the fall as measured by corn yields, but nitrogen recovery tended to be lower from urea than from the other sources. Considerable residual effects of spring-applied nitrogen were found over a period of 16 months based on both yield and nitrogen uptake by the crops. Average uptakes of 25 and 34 pounds per acre of additional nitrogen were made by the second and third crops, respectively, from the 200-pound original application. This residual nitrogen produced average yield increases of 1,600 pounds of dry forage and 19 bushels of corn per acre. These results emphasize the economic importance of residual nitrogen and the need for soil test procedures for its estimation.
Author: Robert Campbell Jurney
Publisher:
ISBN:
Category : Lee County (Va.)
Languages : en
Pages : 206
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Author: George Robert Dahlke
Publisher:
ISBN:
Category : Fertilizers
Languages : en
Pages : 76
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Author: Richard Wiebe
Publisher:
ISBN:
Category : Aeronautics in agriculture
Languages : en
Pages : 1250
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Author: Elshafey Elsayed
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659712982
Category :
Languages : en
Pages : 104
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Field experiment was carried out at the Experimental Station Farm in Giza, ARC, Egypt, during 2012 and 2013 seasons to study the effect of varying sources and rates of nitrogen fertilizers on fresh and dry forage yield of sudangrass, chemical constituents, nitrate and nitrite accumulation in plant. It can be recommended that mineral fertilizing sudangrass plants with 100 kg N/fed as ammonium sulphate in order to maximize its forage yields and reduce nitrate and nitrite accumulation in plant under the environmental conditions of Giza Governorate, Egypt. Biological experiment was carried out to investigate the effect of different levels of nitrate in Rex male rabbit diets. In conclusion, rabbits under these investigations can tolerate 0.73% nitrate (1% sodium nitrate) in feed without significant negative effect. Most results of 1.46 % nitrate (2% sodium nitrate) and all results of 2.19 % nitrate (3% sodium nitrate) had toxic effect of growth performance, digestibility of nutrients, blood parameters, histological structure of internal organs of rabbits.
Author: United States. Office of Experiment Stations
Publisher:
ISBN:
Category : Agricultural experiment stations
Languages : en
Pages : 1046
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Author: United States. Bureau of Plant Industry. Library
Publisher:
ISBN:
Category :
Languages : en
Pages : 402
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