Irrigation Requirement of Coconut and Response to Levels of Fertiliser Under Irrigated Condition During the Early Bearing Stage
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2007-02
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An investigation to determine the irrigation requirement of coconut and the optimum fertiliser dose under irrigated condition was carried out at CPCRI, Kasaragod. The growth characters and yield performance of palms in the early bearing stage showed that depth of irrigation water had negligible effect. Irrigating at irrigation water/cumulative potential evaporation ratio of 0.50 gave significantly lower increase in growth and yield; while the differential response to irrigation at the ratios 1.00 and 0.75 was of low magnitude. Significant increase in growth and yield were manifested up to the m2 level of fertiliser. The response to fertiliser application alone was higher than that to irrigation alone under local conditions. Based on the performance during the early bearing stage, the irrigation requirement of coconut was found to be 660 to 680 mm per dry season, IW irrigating at IW/CPE ratio 0.75. The West Coast Tall palms receiving summer irrigation responded favourably to split application of 750 g N+670 g P2O5+1500 g K2O+170 g MgO/palm/year.
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In: Proceedings, PLACROSYM I, RRII, Kottayam, 20-23 Mar. 1978. Edited by E. V. Nelliat and others 1979 p-186-199