Abstract:
A field experiment, comprising four deficit drip irrigation treatments on potato crop (under drip irrigation) was conducted in field conditions at Potato Research Institute, Sahiwal, Pakistan to maximize water usage and for increased yield and per unit crop productivity using RCBD design with four replications, during 2018-19 and 2019-20. Cropwat 8.0 program was used to determine the interval and depth of next irrigation at 15, 30, 45 and 60% management allowable depletion (MAD) of soil moisture. The outcomes indicated that irrigation to potato crop at 30% MAD level gave the highest water productivity (17.28 kg/m3) followed by 60, 15 and 45% MAD levels. Maximum %age of medium sized tuber was achieved by applying irrigation to potato crop at 60% MAD level (65.75), followed by 30% MAD level (65.5), 45% MAD (64.0) and 15% MAD level (60.50). The incidence of scab was found 2.50%, 2.75%, 3.25% and 3.75% in potato tubers at 15, 30, 45 and 60% MAD level, respectively. Inshort, to improve the yield, marketable tuber size, water productivity and cosmetic value of potato, 30% and 60% MAD level could be adopt for irrigation for this crop under drip irrigation system.
Page(s):
47-50
DOI:
DOI not available
Published:
Journal: Journal of Agricultural Research, Volume: 60, Issue: 1, Year: 2022
Keywords:
Pakistan
,
yield
,
water productivity
,
Solonam tuberosum
,
scab
,
management allowable depletion