TY  - BOOK
AU  - Havlin, John L.
TI  - Soil fertility and fertilizers: an introduction to nutrient management 
SN  - 9788120348684
U1  - 631.813 
PY  - 2014///
CY  - Delhi
PB  - PHI Learning
KW  - Fertilizers
KW  - Soil fertility
KW  - Crops
KW  - Nutrition
N1  - Includes index; Basic soil-plant relationships -- Soil acidity and alkalinity -- Nitrogen -- Phosphorus -- Potassium -- Sulfur, calcium, and magnesium -- Micronutrients -- Soil fertility evaluation -- Basics of nutrient management -- Nutrient interactions and economics -- Agricultural productivity and environmental quality
ER  -