Water requirement of mango crop under drip irrigation in different mango growing belts of Uttarakhand.
Singh P. K., Singh K. K., Sharma H. C.
Author Affiliation: Department of Irrigation and Drainage Engineering, College of Technology, G. B. Pant University of Agriculture and Technology, Pantnagar - 263 145 (U. S. Nagar, Uttarakhand), India.
Pantnagar Journal of Research 5 : 131-134
Abstract : Two representative stations namely Dehradun and Pantnagar, lying in two main mango-growing belts, were selected for the estimation of reference evapotranspiration under per-humid and moist sub-humid, agro-climatic regions of Uttarakhand. FAO Penman-Monteith model was used for the estimation of reference evapotranspiration on weekly meteorological data of ten years. The estimated reference evapotranspiration values were further used for the determination of water requirement of different age groups of mango crop under drip irrigation. The weekly average value of water requirement of mango crop under drip irrigation varied from 2.11 litre/day/plant to 139 litre/day/plant in per-humid and 2.45 to 197 litre/day/plant in sub humid climatic conditions of Uttarakhand. On an average, it was found that average annual value of water requirement varied from 2.11 to 197 litre/day/plant. It was also found that the water requirement of mango crop increases with the increase in the age of mango tree and becomes constant when the full canopy has been developed at the age of about 30 to 35 years of mango trees.