what is the remedies or control measures of fruit dropping of coconut?

উত্তর সমূহ

  1. সৈয়দা সিফাত জাহান, উপজেলা কৃষি অফিসার, কালীগঞ্জ, লালমনিরহাট

    The following remedial measures can be followed to effectively manage this problem:-

    • Rectification of soil pH-Excess acidity or alkalinity of soil may cause button shedding. If the soil pH is less than 5.5, the soil is too acidic. This could be overcome by adding lime. High alkalinity is indicated by soil pH higher than 8.0. This situation could be managed by adding gypsum.
    • Lack of nutrition-Button shedding can occur as a result of inadequate manuring. The recommended dose of manurial schedules and proper time of application are important to minimise the button shedding. Soil application of 1.3 Kg urea, 2 Kg of Single Super Phosphate and 2 Kg of potash, mixed with 50 Kg of farmyard manure per palm. This can be followed by root feeding of Coconut tonic @ 40 ml in 160 ml of water per palm once in 6 months which will control the button shedding and enhance the yield.
    • Irrigation management- Button shedding will be severe during March-April. Severe drought and / or insufficient irrigation aggravate the problem. Soil mulching with green fronds reduces evapo-transpiration and conserves soil moisture. Ensuring sufficient irrigation during summer and drainage during winter will lead to a sustainable yield.
    • Hormone deficiency- Apply 0.5 ml of NAA (Planofix) mixed in 1 litre of water on the inflorescence. This prevents button shedding.
    • Pests and Diseases- When young buttons are formed sucking pests start infesting which in turn attracts secondary fungal infections. Apply the recommended plant protection measures to ward off the problem.
    • Boron deficiency or crown chokes disorder: Apply 200g of borax/palm/year in two splits.