Abstract
A field experiment was conducted to compute the water use and productivity of turmeric as a function of straw mulching and irrigation scheduling at Punjab Agricultural University, Ludhiana, during 2013 and 2014. The experiment was laid out in split plot design, keeping mulch levels (no mulch and straw mulch 6 t/ha) and irrigation methods (drip and check basin) in main plots and irrigation schedules at 0.6, 0.8, 1.0 and 1.2 irrigation water/cumulative pan evaporation (IW/CPE) in subplots. Turmeric yield was 125.2 % higher with mulching than no mulch with 50 % saving in irrigation water. Drip irrigation resulted in significantly higher turmeric yield and benefit/cost (B/C) than check basin. Irrigation scheduling at 1.2 IW/CPE recorded significantly higher turmeric yield than other schedules. Drip irrigation at 0.8 IW/CPE resulted in statistically at par yield with check basin irrigation at 1.2 IW/CPE, thus saving 40 % irrigation water with significantly higher B/C. However, turmeric yield was at par between drip irrigation at 1.2 and 1.0 IW/CPE schedule, while a significant reduction in yield was recorded in check basin at 1.0 IW/CPE compared to 1.2 IW/CPE. Turmeric should be irrigated with drip at 1.0 and with check basin at 1.2 IW/CPE to realize potential yield.
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