![]() ![]() Those are some general options off the top of my head, but I am not a coconut grower and someone else may have more specific pertinent information. On a small scale for easy to reach situations, talk to locals who dig out and fry up the big grubs for a snack. He told us that some growers pour sand in around the frond bases to deter the beetles and weevils from boring. The head of the division in Bangkok when I last communicated was a woman, Dr Winothai if I remember right, but that was in 2009 or 2010.Ī neighbor of our small farm in Chiang mai was a big coconut grower and he used the cypermethrin method for Rhinocerous beetles and the associated red palm weevil that follows the rhinos, used their galleries and does even more damage. The Thailand Agriculural Dept has a biological control division with an office in Chonburi that specializes in coconut palm pests, they were cultivating a mini wasp for release to control coconut hispid beetle, I'm not sure if they have a good parasitoid for rhino beetles. But you would definitely need to consult with local ag university like CMU or Maejo U in Chiang Mai, or Kasetsart in Bangkok. ![]() Jimmy recommended a biological control, and that would be preferred for organic, sustainable management. The residual from a single spray application with a high concentration tank mix, would be about 3 months, longer if bifenthrin is used. But you would need a sprayer capable of reaching the entire head and drench the frond bases. Or cut out the young fruits before they could be consumed.Īnother pesticide option that would be appropriate for edible coconut production (non-systemic) is preventive barrier spraying with a pyrethroid like cypermethrin or cypermethrin with bifenthrin (Chaindrite Stedfast). To use this responsibly for a food plant you would have to isolate the palms for no access to people for harvest. Imidacloprid, another neonicotinoid systemic insecticide, takes a month or so for uptake, but has a year or more residual. Starkle G is a Mitsui product with dinotefuran active ingredient, its fast for uptake and translocation, but only about 3 month residual effectiveness. These are applied to the soil for root uptake. Giddyup are you using the coconuts? harvesting, eating, drinking? If not and only ornamental, the easiest - not organic, and not for food producing plants, is to use a systemic insecticide like Starkle G or Bayer Imidacloprid, available in ag shops. But I could be wrong, I have only used them for mangoes and olives. The traps usually only get a small percentage of the pest, and are used for detection of pest life cycle and presence to initiate a spray program, not for control by itself. Or PM me and I'll dig up the phone number or directions. If you are in Chiang Mai area I have a recommendation for the most complete ag fertilizer and pesticide shop in Thailand. I don't know about the phermone traps, but a local ag shop would be the place to inquire. I suspect that unless it is a major outbreak in the area it may not be easy to find or get. and solved the problem for most of the coconut trees. Pheromone traps where placed around the islands. When Samui and Koh Phangan had a major red beetle problem a few years back. You'll probably need photos and or perhaps a Thai speaker to talk about the problem. I would suggest asking your local agricultural dept if there is anything.
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