Hameed Khan, H.Sankaranarayanan, M.P.George, M.V.Narayana, K.B.2014-06-122014-06-122007-02-08J.Plantn.Crops 1983 v-11 i-2 p-129-134http://hdl.handle.net/123456789/2783The skipping phosphorus fertiliser application to adult coconut palms has resulted in the reduction of soil available P from 84 to 59 ppm at 0-30 cm depth and 24 to 13 ppm at 30-60 cm depth in the coconut basins. Neither a reduction in soil available phosphorus nor an increase consequent to fertiliser application at two levels for the past six years has significantly influenced foliar P levels and yield. The possibility of skipping application of phosphatic fertilisers to adult coconut groves in soil where available P is around 24 ppm at 30 to 60 cm depth is outlined. The usefulness of foliar P levels as a guide to fertiliser application seems to be doubtful.enArticle