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The effects of shifting planting dates and irrigation levels on tuber size and yield of potato cv., Kufri Badshah under middle agroclimatic zone of Gujarat



The effects of shifting planting dates and irrigation levels on tuber size and yield of potato cv., Kufri Badshah under middle agroclimatic zone of Gujarat



Journal of the Indian Potato Association 22(1-2): 17-22



Field experiments were conducted during the rabi seasons of 1991-92 and 1992-93 to study the performance of potato crop in relation to dates of planting and irrigation regimes and to test the efficiency of infra-red (IR) thermometry in scheduling irrigation. The relative performance of the various treatments was Such that early planting (3rd Nov.) increased percentage of small grade tubers and decreased the percentage of large grade tubers while the second date of planting (16th November) produced highest percentage large grade tubers. Late planting (30th Nov.) produced significantly higher number of tubers as well as higher percentage of medium grade tubers and gave significantly higher tuber yield than 3rd November and 16th November planting in both the years. Scheduling of irrigation with infra-red (IR) thermometry with (T-c-T-a) ranging between +- 1 degree C could save about 33 to 44% of irrigation water without appreciable reduction in yields.

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