ABSTRACT
4Assessment of water requirement of horticulture crops is prerequisite for efficient use of water in limited water availability and increased crop productivity. Different methods available for estimation of crop water requirement from historical to present are discussed in this chapter. Selection of a method to determine water requirement of crop depends on availability of weather data. Location specific studies are conducted to evaluate different methods of estimation of water requirement to find out best method with good accuracy. Water requirement of horticultural crops are reviewed in this chapter. This information can be used to compute water requirement of crops under micro irrigation.
