Numerical Agronomy By Abhijit Sharma Pdf

Numerical Agronomy

Numerical is the heart of agronomy. The subject agronomy deals with principles and practices of soil, water and crop management for higher and sustainable production. As such, there are direct relationships between plant population and growth, growth and yield attributing characters and yield attributing characters and yield. With different row arrangement of crops, plant stand varies. Similarly, nutrient requirement varies from crop to crop, sometimes, from variety to variety. Even, depending upon the source, fertilizer requirements vary for same amount of nutrients. Thus, precise calculation is required to get the maximum benefit of applied inputs.

Principles Of Agronomy

Soil Organic Matter in Sustainable Agriculture

Recognition of the importance of soil organic matter (SOM) in soil health and quality is a major part of fostering a holistic, preventive approach to agricultural management. Students in agronomy, horticulture, and soil science need a textbook that emphasizes strategies for using SOM management in the prevention of chemical, biological, and physical problems. Soil Organic Matter in Sustainable Agriculture gathers key scientific reviews concerning issues that are critical for successful SOM management. This textbook contains evaluations of the types of organic soil constituents—organisms, fresh residues, and well-decomposed substances. It explores the beneficial effects of organic matter on soil and the various practices that enhance SOM. Chapters include an examination of the results of crop management practices on soil organisms, organic matter gains and losses, the significance of various SOM fractions, and the contributions of fungi and earthworms to soil quality and crop growth. Emphasizing the prevention of imbalances that lead to soil and crop problems, the text also explores the development of soils suppressive to plant diseases and pests, and relates SOM management to the supply of nutrients to crops. This book provides the essential scientific background and poses the challenging questions that students need to better understand SOM and develop improved soil and crop management systems.