Banana Borer Weevil Control on Commercial Farms Using Biological and Conventional Control Method

The banana borer, Cosmopolites sordidus, is a major economic pest of banana. The adult weevil measures about 1.5cm long by 0.4 cm wide and hides in banana trash on the ground or on the stem during the day and crawls about at night. A single female may lay (oviposits) as many as fifty eggs in her lifetime. It is believed that oviposition is greatest in those months of the year when there is high rainfall. Populations surge after hurricane events. Egg production falls off in months when moisture level is low. The larva is the caterpillar-like stage in the insect’s life cycle which does all the damage to the plant. The larvae are voracious feeders. They damage the corm as they feed, causing a number of tunnels. As they move continuously through the corm, they destroy large quantity of tissue, sever many vessel and damage root origins. Extensive tunneling and rotting reduce the strength of the plant and cause death or toppling of the plant, thereby reducing yield up to 30%.

Chemical control of weevils is bio-hazardous, undesirable and expensive because of the use of highly toxic insecticides, such as Actara (thiamethoxam). Traps made from freshly cut banana pseudostem can be used to determine population levels while pheromone traps baited with Cosmolure+ and insecticide treated green banana are more useful as an alternative to pesticide application to plants. Pheromone trapping resulted in reduction of borer populations on more than 90% of farms sampled.

 

 


 

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Banana Board
10 South Ave
Kingston Gardens
Kingston 4, Jamaica
Tel: (876) 922-5490
(876) 922-4327
Email: bananaboard@cwjamaica.com

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