The following points highlight the top five methods used for estimating the water requirement of crops. The methods are: 1. Lysimeteric Technique 2. Water Balance Techniques 3. Soil Water Depletion Method 4. Field Experiment Plots Method 5. Estimation of Etc from Climatological Data. Method # 1. Lysimeteric Technique: Lysimeter was constructed by Philippe de La Hire (1640-1718). Lysimeter is a [...]
In this article we will discuss about the total water requirement in growing a crop, with the help of a suitable formula. The water that is required to irrigate a field or plot of land growing the particular crop not only has to satisfy the evapotranspiration needs for growing the crop, but would also include the following: i. Losses in [...]
In this article we will discuss about the need for variation in water requirement of crops, with the help of a suitable diagram. The total water need for various plants is known as delta. However, in planning the supply of irrigation water to a field crop, it is essential to estimate the water requirement of each plot of land growing [...]