Journal of Environmental Biology

Performance of potato variety Kufri Megha under different irrigation scheduling and date of planting at North Eastern Indian mid hills 

M. Gogoi*, Lala I.P. Ray, Sanjay-Swami, K. Kant and N.K. Meena 

College of Post Graduate Studies in Agricultural Sciences, Central Agricultural University, Umiam (Barapani)-793 103, India

*Corresponding Author Email : meghna.gogoi91@gmail.com?

Paper received: 13.06.2020 ?????? ???????????????????????????????????????Revised received: 03.10.2020 ???????????? ???????????????????????????????????Accepted: 30.10.2020

Abstract

Aim: To assess the performance of winter potato (Solanum tuberosum L.) variety Kufri Megha, under real time based irrigation scheduling, i.e., ratio of depth of irrigation water to cumulative pan evaporation in mid hills of Meghalaya during winter season of 2016-17.

Methodology: A field trial with three different irrigation scheduling as main-treatments, viz., IW: CPE- 0.75 (I₁), IW: CPE- 1.00 (I₂) and IW: CPE- 1.25 (I₃), four different dates of planting, viz., 1^st November (D₁), 11^th November (D₂), 21^st November (D₃) and 1^st December (D₄) was laid out and replicated thrice. Irrigation was provided with a micro sprinkler irrigation system and was laid out in split plot design.

Results: The plants planted on 11^th November and irrigation scheduled at IW: CPE-1.25 recorded higher values for plant height (cm), number of branches per plant, leaf area index, dry matter accumulation per plant, net assimilation ratio, crop growth rate, relative growth rate, tuber yield (t ha^-1), haulm yield (t ha^-1), harvest index (%), water use efficiency and benefit cost ratio over other treatments.      

Interpretation: It can be recommended that by following climatological approach of cumulative pan evaporation for irrigation scheduling in potato using micro sprinkler method of irrigation, the crop water requirement could be met during lean period to avoid moisture stress in plants coupled with planting at the right climatic conditions.          

Key words: Benefit cost ratio, Irrigataion scheduling, Winter potato

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