Coconut

Integrated Crop Management


  • The optimum manurial and cultural requirements for coconut palm have been recommended based on agronomic trials. The fertilizer recommendation for the adult bearing coconut palm includes 500g N, 320 g P2O5 and 1200 g K2O/palm/year in two split doses. Rock phosphate is recommended as ideal source of P for coconut palms.
  • Studies on rationalization of P application to coconut palms indicated that application of P could be skipped if soil test values are more than 20 ppm.
  • Irrigating coconut palms through drip system with 32 litres of water/palm/day has been found to be advantageous to save water.
  • Palm based farming systems and cropping models with compatible crop combinations for effective utilization of solar radiation and soil resources available in the interspaces in coconut gardens. In the coconut based High Density Multi Species Cropping System (HDMCS) involving a crop combination of pineapple, banana, clove and nutmeg, sustained higher level of productivity with the application of lower dose of fertilizers than the recommended dose and the recycling of crop residues. Mixed farming system including coconut, dairy, poultry, rabbitry, sericulture and pisciculture has been successfully demonstrated in coconut.
  • A low cost technology for the large scale production of vermicompost from coconut plantation wastes has been standardized with a large, pigmented, epigamic local earthworm species.
  • Nitrogen fixed by symbiotic cover legume, Calopogonium mucunoides/Mimosa invisa-Rhizobium association substituted fifty per cent of the fertilizer nitrogen requirement of coconut palm when grown as green manures in basins.
  • Leaf rot disease which appears superimposed on root (wilt) affected palms can be controlled by i) pouring of 300 ml of fungicidal solution containing 2 ml of Contaf 5 % EC or 3 g Indofil M45 in the spindle well after removing the rotten portions in the spindle and two to three adjoining leaves and ii) application of 20 g phorate 10G mixed with 200 g fine sand around the base of the spindle.
  • Stem bleeding disease of coconut caused by a fungus, Theilaviopsis paradoxa can be effectively controlled by chiseling and removing the infected bark and application of calixin (5%) followed by coal tar and root feeding with calixin (5%). Providing irrigation in summer, drainage in rains and application of neemcake @5kg per palm are also recommended for the management of the disease.
  • Phytosanitation, taking isolation trenches around the affected palm, root feeding with systemic fungicides like calixin (2ml/100ml), soil drenching with calixin 0.1% and application of neem cake@ 5 kg /palm/year are effective in controlling basal stem rot disease of coconut.
  • Crown choking of coconut caused by boron deficiency can be controlled by soil application of Borax @ 50-75g/palm twice a year in root (wilt) free zones and 300 g Borax in root (wilt) affected areas.
  • Rhinoceros beetle of coconut can be controlled by IPM techniques including hooking the beetle, leaf axil filling with sevidol (25g) and fine sand (200g) or naphthalene balls @ 12g/palm and releasing baculovirus infected beetles. Metarrhizhium anisopliae, a fungus is also identified as an effective bio control agent against rhinoceros beetle.
  • Leaf eating caterpillar (Opisina arenosella) of coconut can be controlled by spraying dichlorvos (0.02%) on the foliage after removing the severely affected one or two lower fronds and subsequent release of parasitoids after 15 days of spraying.
  • Plant and field sanitation, curative treatment with 1% carbaryl or 0.1% endosulfan, use of pheromone traps and attractants are recommended as the IPM technologies against red palm weevil of coconut.

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