This edition detailed with optimisation of nutrient and water supply for maximizing CNP yield below the working volume is achieved by managing fertilizers concentrations in measured quantities of irrigation water according to crop requiremetns and also, about the maximization of crop yield and quality and minization of leaching below the working volume may be achieved by managing fertilizers concentrations. Contents: 1. Nutrient Management 2. Land Management for Irrigation 3. Irrigation Water Management 4. Fertigation 5. Chemigation