Author: Lee Stewart AltierPublisher:
ISBN:
Category :
Languages : en
Pages : 432
Book Description
Analysis and Modeling of Nitrogen Cycling in a Vegetable Intercropping System
Author: Lee Stewart AltierFate and Transport of Nitrogen
Author: Marvin James ShafferPublisher:
ISBN:
Category : Nitrogen cycle
Languages : en
Pages : 22
Book Description
American Doctoral Dissertations
Author: Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 806
Book Description
Nitrogen Turnover in the Soil-Crop System
Author: J.J. GrootPublisher: Springer Science & Business Media
ISBN: 9401134340
Category : Nature
Languages : en
Pages : 244
Book Description
In the Netherlands the Institute for Soil Fertility Research plays a major role in soil biological, soil physical and plant nutritional research on the availability of nitrogen to crops. Main subjects of research are nitrogen turnover in the crop-soil ecosystem through biological transformations, nitrogen transport through the soil and nitrogen losses by leaching, denitrification and volatilization, and nitrogen use efficiency of various crops and cropping systems. The current knowledge in the different fields of research is integrated in simulation models. Simulation models not only make it possible to summarize and structure knowledge, but also, after verification, to extra- late the knowledge to situations different from the situations that have actually been studied. Such research is also carried out in other European and non-European countries. To compare the various simulation models currently in use, a workshop was organized by the Institute for Soil Fertility Research on 5-6 June 1990 on the occasion of its centennial. The title of the workshop was 'Nitrogen turnover in the soil-crop ::cosystem: modelling of biological transformations, transport of nitrogen and nitrogen use efficiency'. The 40 Jarticipants, who came from Canada and various European countries, were requested to run their model with data Jrovided by the Institute prior to the workshop. Data from 18 cases were made available to the participants: three ocations, three treatments, and two seasons.
The Graduate Fields of Pomology and Vegetable Crops
Author: New York State College of Agriculture and Life Sciences. Department of Fruit and Vegetable SciencePublisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 34
Book Description
Double Cropping and Interplanting
Author: Mary V. GoldPublisher:
ISBN:
Category : Double cropping
Languages : en
Pages : 124
Book Description
Agrindex
Author: Agriculture and the Nitrogen Cycle
Author: Arvin MosierPublisher: Island Press
ISBN: 1597267430
Category : Science
Languages : en
Pages : 320
Book Description
Nitrogen is an essential element for plant growth and development and a key agricultural input-but in excess it can lead to a host of problems for human and ecological health. Across the globe, distribution of fertilizer nitrogen is very uneven, with some areas subject to nitrogen pollution and others suffering from reduced soil fertility, diminished crop production, and other consequences of inadequate supply. Agriculture and the Nitrogen Cycle provides a global assessment of the role of nitrogen fertilizer in the nitrogen cycle. The focus of the book is regional, emphasizing the need to maintain food and fiber production while minimizing environmental impacts where fertilizer is abundant, and the need to enhance fertilizer utilization in systems where nitrogen is limited. The book is derived from a workshop held by the Scientific Committee on Problems of the Environment (SCOPE) in Kampala, Uganda, that brought together the world's leading scientists to examine and discuss the nitrogen cycle and related problems. It contains an overview chapter that summarizes the group's findings, four chapters on cross-cutting issues, and thirteen background chapters. The book offers a unique synthesis and provides an up-to-date, broad perspective on the issues of nitrogen fertilizer in food production and the interaction of nitrogen and the environment.
Abstracts on Tropical Agriculture
Author: Measuring Plant-associated Nitrogen Fixation in Agricultural Systems
Author: Publisher:
ISBN: 9781921531262
Category : Agriculture
Languages : en
Pages : 258
Book Description
Biological nitrogen fixation. Why, when an how to measure nitrogen fixation. Analysis of nitrogen. Nitrogen Balance Method. Nitrogen Difference method. Ureide (N solute) metode. N-isotopic methods. N-abundance method. N isotopic ditution method. prcaution whenquantifying N2 fixation associated with no-nodulatin plants (associative N2 fixation). Assays of nitrogenase activity.