Influence of irrigation methods and fertilizer levels on productivity of potato (Solanum tuberosum)

VIPIN SHARMA; I P SHARMA; R S SPEHIA; Pardeep Kumar

doi:10.56093/ijas.v82i2.15276

Authors

VIPIN SHARMA Dr YS Parmar University of Horticulture and Forestry, Nauni, Himachal Pradesh 173 230
I P SHARMA Dr YS Parmar University of Horticulture and Forestry, Nauni, Himachal Pradesh 173 230
R S SPEHIA Dr YS Parmar University of Horticulture and Forestry, Nauni, Himachal Pradesh 173 230
Pardeep Kumar Dr YS Parmar University of Horticulture and Forestry, Nauni, Himachal Pradesh 173 230

https://doi.org/10.56093/ijas.v82i2.15276

Keywords:

Benefit, cost ratio, Drip, Field capacity, Hydrothermal regimes, Split-plot design, Sprinkler

Abstract

A experiment was laid in split-plot design and the treatments comprised sprinkler, drip and furrow irrigation as main plot along with three doses of fertilizers, viz F₁ (NPK @ 150:150:125 kg/ha), F₂ (NPK @ 125:125:100 kg/ha) and F₃ (NPK @ 100:100:75 kg/ha) as sub-plot treatments. Results of the study indicated that irrigation methods manipulated the hydrothermal regimes of the soil comprehensively and mean maximum monthly temperature was lowered by about 1.2oC under sprinkler irrigation. Under drip irrigation, moisture was near to the field capacity throughout the growth period, whereas, in conventional furrow irrigation, the moisture status curve traveled from above field capacity to 50% moisture depletion conditions. The yield of tubers was appreciably higher under sprinkler and drip, compared to furrow irrigation method. F₁ and F₂ exhibited non significant differences among themselves, in respect of tuber yield, but were significantly higher than F₃. Economic analysis indicated that sprinkler irrigation and F₂ resulted in optimum benefit: cost ratio.

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