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 Current Category » Micro Irrigation and Drainage Engineering Water Requirement for Row Crop (Close Spaced) Volume of water in lit/day/m2= PE X PCX KC Volume of water in lit/day dripper= Dripper to dripper spacing X lateral to lateral spacing X PE X PC X PC Example:  Find out the W.R for tomato having 30 cm X 45 cm X 60 cm. Pan evaporation of the region is 7 mm/ day. Assume crop factor and pan factor. Solution: i) Volume of water in lit/day/m2                    = 7 X 0.7 X 0.8= 3.92 ii) Volume of water in lit/day/dripper                    = 0.60 X 1.05 X 7 X 0.7 X 0.8                    = 2.46 iii) Calculate the quantity of water required in m3 per hectare per day for banana using following data: i) Spacing between the plants and row= 1.5X1.5 m ii) Pan evaporation = 10 mm /day iii) Pan factor = 0.70 iv) Crop coefficient = 1.0 v) % wetted area= 60 W.R = 1.5 X 1.5 X10 X 0.70 X 1.0 X 0.60          = 9.45 lit/day/plant No of plant = 1000 /1.5X 1.5= 4445 Qty of water= 4445 X 9.45                     = 42000 lit/day/ha.                     =42 m3 / day/ ha. Current Category » Micro Irrigation and Drainage Engineering