Prevention is better than cure. So it is always advantageous to restrict the entry of the weevil stages into the palms. As a prophylactic measure, young palms may be soaked with a pesticide at periodic intervals. This will kill the hidden adults in the palm crowns and also any pest stages present in crevices and damaged tissues.
1. Soaking or drencing method
2. Cultural practices
It is very interesting to note that the cultural practices followed by coconut and date palm farmers/growers vary widely in different countries and regions. During my travel in Thailand, I noticed a place with tall coconut palms with most of their leaves pruned as seen in the picture below. Only 3-5 inner leaves were left on the palms and the palms presented a pathetic sight. No doubt it is not a common practice but it should be avoided by all. In coconut it is always recommended to allow maximum leaves so that the annual nut yield is fairly good and economical. One must avoid premature cutting of leaves and if a leaf has to be cut, care should be taken to cut only the outer most one or two leaves with 2-3ft of leaf bases intact. The leaf bases will slowly dry up and drop off in due course of time. There are a couple of advantages in this cultural practice. One is that there is no injury as such to the palm and the second one is that it prevents the entry of newly hatched larvae of Red Palm Weevil into the plant. The long leaf base or petiole was found to act as a barrier for the early instar grubs which find it difficult to tunnel up to the soft tissues of the stem. So it is advised that farmers and growers should follow this method to prevent the Red Palm Weevil attack in coconut palms.
4. Plant Quarantine
5. Pheromone Trapping System