questions: query regarding budrot of coconut 
 answers: remove all the affected tissue of the crown region and crown drenching with copper oxychloride 0.25%. (apply bordeaux paste and protect it from rain till normal shoot emerges. (dissolve 100 gm of copper sulphate and 100 gm of quick lime each in 500ml. water separately and mix to form 1 litre of bordeaux paste).
spray 0.25% copper oxychloride on the crown of the neighbouring palms as a prophylactic measure before the onset of monsoon. (spray 1% bordeaux mixture on spindle leaves and crown of disease affected as well as neighbouring palms, as a prophylactic measure. palms that are sensitive (dwarf palms) to copper containing fungicides can be protected by mancozeb. small, perforated sachets containing 2 g of mancozeb may be tied to the top of leaf axil. when it rains, a small quantity of the fungicide is released from the sachets to the leaf base, thus protecting the palm.