Longan Pest: Thrips
The grub and mature thrips sucks the nutrients from the bud, flowers and young fruit. The burning mark is on the crooked leaf which results in the imperfect flowering and falling flowers, as well as the marked fruit. Thrips spread by flying or blowing. The severe epiphytotic is during drought season or insufficient rainfall period. Check the epiphytotic by knocking the top or the inflorescence on the white paper and count the thrips.
Prevention and Elimination
1. Use Arty 70 100-150 g. or Ozophrene 300 cc. or The Next 100-150 g. (usage rate is per 200 ltr. of water).