Author:
Publisher:
ISBN:
Category : Fertilization of plants
Languages : en
Pages : 56
Book Description
This report summarizes findings in the agronomic area of fertilizer research from July 1, 1975, through September 30, 1978. Similar 3-year reports were issued in 1957 and at 3-year intervals thereafter.
Soil-fertilizer-plant Research, 1975-1978
Author:
Publisher:
ISBN:
Category : Fertilization of plants
Languages : en
Pages : 56
Book Description
This report summarizes findings in the agronomic area of fertilizer research from July 1, 1975, through September 30, 1978. Similar 3-year reports were issued in 1957 and at 3-year intervals thereafter.
Publisher:
ISBN:
Category : Fertilization of plants
Languages : en
Pages : 56
Book Description
This report summarizes findings in the agronomic area of fertilizer research from July 1, 1975, through September 30, 1978. Similar 3-year reports were issued in 1957 and at 3-year intervals thereafter.
Soil-fertilizer-plant Research, 1975-1978
Author: National Fertilizer Development Center (U.S.)
Publisher:
ISBN:
Category : Fertilizers
Languages : en
Pages : 48
Book Description
Publisher:
ISBN:
Category : Fertilizers
Languages : en
Pages : 48
Book Description
Soil-fertilizer-plant Research, 1972-1975
Soil-Fertilizer-Plant Research 1972-1975
Author: Estados Unidos National Fertilizer Development Center
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
TVA Fertilizer Publications
Fertilizer Abstracts
Soil-fertilizer-plant Research, 1972-l975
Author: National Fertilizer Development Center (U.S.)
Publisher:
ISBN:
Category : Fertilizers
Languages : en
Pages : 52
Book Description
Publisher:
ISBN:
Category : Fertilizers
Languages : en
Pages : 52
Book Description
Gaseous Loss of Nitrogen from Plant-Soil Systems
Author: J.R. Freney
Publisher: Springer Science & Business Media
ISBN: 9401716625
Category : Science
Languages : en
Pages : 325
Book Description
A growing interest has been shown recently in the dymanics of nitrogen in agricultural and natural ecosystems. This has been caused by increasing demands for food and fibre by a rapidly expanding world population, and by a growing concern that increased land clearing, cultivation and use of both fertilizer and biologically fixed nitrogen can have detrimental effects on the environment. These include effects on water quality, eutrophication of surface waters and changes in atmospheric composition all caused by increased cycling of nitrogenous compounds. The input and availability of nitrogen frequently affects the productivity of farming systems more than any other single management factor, but often the nitrogen is used inefficiently. Much of the fertilizer nitrogen applied to the soil is not utilised by the crop: it is lost either in solution form, by leaching of nitrate, or in gaseous forms as ammonia, nitrous oxide, nitric oxide or dinitrogen. The leached nitrate can contaminate rivers and ground waters, while the emitted ammonia can contaminate surface waters or combine with atmospheric sulfur dioxide to form aerosols which affect visibility, health and climate. There is also concern that increased evolution of nitrous oxide will deplete the protective ozone layer of the stratosphere. The possibility of a link between the intensity of agricultural use of nitrogen, nitrous oxide emissions and amounts of stratospheric ozone has focussed attention on these interactions.
Publisher: Springer Science & Business Media
ISBN: 9401716625
Category : Science
Languages : en
Pages : 325
Book Description
A growing interest has been shown recently in the dymanics of nitrogen in agricultural and natural ecosystems. This has been caused by increasing demands for food and fibre by a rapidly expanding world population, and by a growing concern that increased land clearing, cultivation and use of both fertilizer and biologically fixed nitrogen can have detrimental effects on the environment. These include effects on water quality, eutrophication of surface waters and changes in atmospheric composition all caused by increased cycling of nitrogenous compounds. The input and availability of nitrogen frequently affects the productivity of farming systems more than any other single management factor, but often the nitrogen is used inefficiently. Much of the fertilizer nitrogen applied to the soil is not utilised by the crop: it is lost either in solution form, by leaching of nitrate, or in gaseous forms as ammonia, nitrous oxide, nitric oxide or dinitrogen. The leached nitrate can contaminate rivers and ground waters, while the emitted ammonia can contaminate surface waters or combine with atmospheric sulfur dioxide to form aerosols which affect visibility, health and climate. There is also concern that increased evolution of nitrous oxide will deplete the protective ozone layer of the stratosphere. The possibility of a link between the intensity of agricultural use of nitrogen, nitrous oxide emissions and amounts of stratospheric ozone has focussed attention on these interactions.
Bulletin - National Fertilizer Development Center
Soil Fertility Investigations on Farmers' Fields
Author: G. F. Hauser
Publisher: Food & Agriculture Org.
ISBN: 9789251003831
Category : Technology & Engineering
Languages : en
Pages : 90
Book Description
Publisher: Food & Agriculture Org.
ISBN: 9789251003831
Category : Technology & Engineering
Languages : en
Pages : 90
Book Description