Author: Matias Bernardo VanottiPublisher:
ISBN:
Category :
Languages : en
Pages : 458
Book Description
Assessment of Residual Fertilizer Nitrogen in a Long-term Crop Sequence Study
Author: Matias Bernardo VanottiPublisher:
ISBN:
Category :
Languages : en
Pages : 458
Book Description
Assessment of Nitrogen Fertilizer Requirement
Author: NW-European Study Group for the Assessment of Nitrogen Fertilizer Requirement. MeetingPublisher:
ISBN:
Category : Crops
Languages : en
Pages : 184
Book Description
Residual Effects of Fall- and Spring-applied Nitrogen Fertilizers on Crop Yields in the Southeastern United States
Author: Robert W. PearsonPublisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 24
Book Description
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.
Diagnostic Soil Testing for Nitrogen Availability
Author: David W. JamesResidual Effect of Crop Rotation and Nitrogen Fertilizer Treatments Following a 20-year Study
Author: I. PapastylianouThe Indian Nitrogen Assessment
Author: Yash P. AbrolPublisher: Elsevier
ISBN: 0128119047
Category : Science
Languages : en
Pages : 570
Book Description
The Indian Nitrogen Assessment: Sources of Reactive Nitrogen, Environmental and Climate Effects, and Management Options and Policies provides a reference for anyone interested in Reactive N, from researchers and students, to environmental managers. Although the main processes that affect the N cycle are well known, this book is focused on the causes and effects of disruption in the N cycle, specifically in India. The book helps readers gain a precise understanding of the scale of nitrogen use, misuse, and release through various agricultural, industrial, vehicular, and other activities, also including discussions on its contribution to the pollution of water and air. Drawing upon the collective work of the Indian Nitrogen Group, this reference book helps solve the challenges associated with providing reliable estimates of nitrogen transfers within different ecosystems, also presenting the next steps that should be taken in the development of balanced, cost-effective, and feasible strategies to reduce the amount of reactive nitrogen. - Identifies all significant sources of reactive nitrogen flows and their contribution to the nitrogen-cycle on a national, regional, and global level - Covers nitrogen management across sectors, including the environment, food security, energy, and health - Provides a single reference on reactive nitrogen in India to help in a number of activities, including the evaluation, analysis, synthesis, documentation, and communications on reactive nitrogen
Proceedings of the ... meeting of the NW European Study Group for the Assessment of Nitrogen Fertilizer Requirement
Author: Proceedings of the ... Fertilizer, Aglime and Pest Management Conference
Author: Fertilizer Use and Crop Yields in the ...
Author: National Soil and Fertilizer Research Committee (U.S.). Fertilizer Work GroupPublisher:
ISBN:
Category : Crop yields
Languages : en
Pages : 556
Book Description
Author: