Maize Agroecosystem

Nutrient Dynamics and Productivity

By K. R. Krishna

© 2012 – Apple Academic Press

342 pages

Purchasing Options:
Hardback: 9781926895086
pub: 2012-07-18
US Dollars$149.95
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About the Book

Maize is among the most widely spread and widely used crops of the world, used for cereals for over 4 billion humans, as food for farm animals, and as a source material for biofuel production. Yet there are relatively few books on the cropping system of this important crop. This book, Maize Agroecosystem, is a concise treatise dealing with agronomy, soil fertility, and productivity of maize. The information is global in nature and considers recent developments in all maize cropping belts.

The "global maize agroecosystem" is a conglomerate of several "maize cropping belts" that flourish on different continents. The impact of nutrient management on the productivity of maize agroecosystems is the main focus of this book.

The book includes the history of maize growing, the kinds of soil needed, nutrient dynamics, the use of soil organic matter, the physiology and genetics of maize, and integrated nutrient management. It presents comprehensive knowledge regarding the physicochemical dynamics of the three major nutrients: nitrogen, phosphorus, and potassium. Also covered is how fertilizers impinge on soils of maize farms and their impact on soil and groundwater quality. The impact of crop genotype on soil nutrient dynamics and productivity is also highlighted.

The information provided here will be highly useful to students at colleges and universities in the fields of agricultural sciences and environmental science and ecology, and the book also functions as valuable resource for researchers and professors in crop science.

Several figures and tables are included that describe and summarize the impact of various agronomic/fertilizer management procedures on crop productivity.

Table of Contents

Preface by Kowligi Krishna

Maize Agroecosystem: Origin, Physiography, Expanse, and Production

Introduction

Physiography, Agroclimate, Soils, Water Requirements and Cropping Systems

Expanse and Productivity of Maize Agroecosystem: Current Status

Uses

Summary

Soils of the Maize Agroecosystem: Tillage and Nutrient Dynamics

Soils of Maize Agroecosystem

Physico-Chemical Transformations of Nutrients in the Soil: A Summary

Soil Tillage affects Nutrient Dynamics in the Maize Belt

Summary

Nitrogen, Phosphorus, and Potassium in Maize Agroecosystems

Major Nutrients: Nitrogen, Phosphorus and Potassium in Maize Belts

Nitrogen Dynamics in Maize Agroecosystem

Phosphorus Dynamics in Maize Agroecosystem

Potassium Dynamics in Maize Cropping Zones

Summary

Secondary and Micronutrients in Maize Agroecosystems

Soil Organic Matter, Crop Residues, and Green Manures

Soil Organic Carbon and Its Sequestration

Crop Residues and Nutrient Recycling

Green Manures and Nutrient Dynamics

Organic Mulches and Nutrient Dynamics

Summary

Maize Roots, Rhizosphere, Soil Microbes, and Nutrient Dynamics

Introduction

Maize Roots, Their Growth and Nutrient Dynamics

Root Exudations

Maize Rhizosphere

Soil Microbes and Nutrient Dynamics

Summary

Crop Physiology, Genetic Improvement, and Nutrient Dynamics

Integrated Nutrient Management

Crop Response to Nutrient Management Procedures

Modeling to Improve Nutrient Dynamics and Maize Production: Examples

Agronomic Efficiency of Fertilizers

Irrigation and Water-Use Efficiency Affect Nutrient Dynamics

Soil Erosion Control and Its impact on Nutrient Dynamics

Weeds affect Nutrient Dynamics and reduce Maize Productivity

Long Term trials With Maize

Cropping Systems, Nutrient Dynamics and Productivity

Maize for Bio-fuel Production: Nutrients and Productivity

Summary

Index

About the Author

K. R. Krishna received his PhD in Agriculture from the University of Agricultural Sciences Bangalore.

He has been a cereals scientist in India and a visiting professor and research scholar at the Soil and Water Science Department at the University of Florida, Gainesville, USA.

Dr. Krishna is a member of several professional organizations, including the American Society of Agronomony, the Soil Science Society of America, the Ecological Society of America, and the Indian Society of Agronomy.

Subject Categories

BISAC Subject Codes/Headings:
SCI011000
SCIENCE / Life Sciences / Botany
TEC003000
TECHNOLOGY & ENGINEERING / Agriculture / General