Your palms are not healthy..that is the reason. Try to put at least 10-20 Kg of FYM (Farm Yard Manure-mix all possible vegetable waste matters, tree leaf around, dry leaf including coconut leaf that falls down, available around ( if possible enough Neem leaf, Pongamia leaf, Nux Vomica Leaf, Calotropis gigantia leaf, Vinca rosea whole plant, with cow dung and cow urine, preferably desi cows), after tilling/trenching at 1/2-1 ft depth around the tree (remember that the root of the tree is where its leaf is, so there is not much use if you put manure close to the stem only), spread it all around along with coco peat-if not available locally, you can make it by crushing the coconut husk and water around the root spread of the coconut tree properly from the beginning of summer. Also see, if there are any large borer insects on the tree and if there is spray a mixture of neem oil, pongamia oil and vinca rosea leaf juice.Small baby coconut falls down as soon as they are out from fresh palm, suggest some remedy pls. Living on coastal in South Goa.
Hello Brother
My suggestion is Plant Immune Stimulator; a product manufactured under new science "Plantopathy"
It's very useful, Hope it helps you.