Cropping Strategies for Efficient Use of Water and Nitrogen. Proceedings


Book Description

Cropping strategies for efficient use of water and nitrogen; multiple cropping for efficient use of water and nitrogen; crop rotation and its impact on efficiency of water and nitrogen use; planting geometries and the efficient use of water and nutrients; role of crops residues; improving water conservation and use; role of crop residues management in nitrogen cycling and use; plant geometries and the efficient use of water and nutrients; the role of nonleguminous cover crops in the efficient use of water and nitrogen; exploiting forage legumes for nitrogen contribution in cropping systems;




ASA Special Publication


Book Description
















Intensive Cropping


Book Description

Explore new concepts for maximizing crop yields! Intensive Cropping: Efficient Use of Water, Nutrients, and Tillage is a compilation of current information on the interdependence of and synergies among water, nutrients, and energy in regard to increasing crop performance. This book explains the need for intensive cropping and explores the technologies and practices necessary for proper management of water, nutrients, and energy. With Intensive Cropping you will learn how to improve the quantity of the world's most important crops using methods that will minimize harm to the environment. This essential guide is a state-of-the-art account of the concepts and practices concerning the integrated use of water, nutrients, and energy in intensive cropping. Intensive Cropping combines basic and applied aspects of soil-water, nutrients, and energy management to help you optimize your crop yields and maximize the efficiency of intensively farmed regions. In Intensive Cropping, you will explore the need for extreme farming and related concerns and concepts, including: reducing runoff, deep seepage, and evaporation losses supplementing irrigation with surface and ground water understanding the process of water uptake and its effects on root dynamics and water use reducing leaching, erosion, and gasseus losses in your fields using combinations of organic manures, crop residues, chemical fertilizers, and biofertilizers for soil maintenance implementing conventional and emerging tillage systems, such as conservation tillage for improving soil quality examining case studies of contrasting edaphic requirements of rice-wheat systems Intensive Cropping brings you up-to-date on recent advances in the field, supported by relevant experimental observations on environmentally safe and effective ways to increase crop performance. By examining this new research on increasing crop production, you will be able to successfully increase crop yields in various climates and support the growing global demand for such resources.







Breeding for drought and nitrogen stress tolerance in maize: From theory to practice


Book Description

Introduction - why breed for drought and low N tolerance?; Conceptual framework - breeding; Conventional approaches to improving the drought and low N tolerance of maize; Conventional approaches challenged; The challenge of breeding for drought and low N tolerance; Maize under drought and low N stress; Conceptual framework - physiology; Water and the maize plant; Nitrogen and the maize plant; Maize under drought and low N stress - consequences for breeding; Stress management; Drought; Low N stress; Statistical designs and layout of experiments; Increasing the number of replicates; Improved statistical designs; Field layout; Border effects from alleys; Secondary traits; Why use secondary traits?; How do we decide on the value of secondary traits in a drought or low N breeding program?; Secondary traits that help to identify drought tolerance; Secondary traits that help to identify low N tolerance: Selection indices - Combining information on secondary traits with grain yield; Combining information from various experiments; Breeding strategies; Choice of germplasm; Breeding schemes; Biotechnology: potential and constraints for improving drought and low N tolerance; The role of the farmer in selection; What is farmer participatory research and why is it important?; What is new about farmer participatory research?; Participatory methodologies.