STUDY ON THE EFFECT OF MICROBIAL-ORGANIC FERTILIZER ON THE POPULATION OF THE MAJOR PESTS IN TEA IN PHU THO

Abstract

The objective of this study was to investigate the composition of pests and spiders in tea ecosystem of Phu Tho. The effect of microbial-organic fertilizer on the number of major pests (tea green leaf hopper and tea thrips) on tea fields was also assessed. Three different treatments were applied: treatment 1 (CT1-control) applied only NPK; treatment 2 (CT2) fertilized 70% of NPK and added 30% of microbial-organic fertilizer; treatment 3 (CT3) fertilized with 100% NPK and supplemented with 30% of microbial-organic fertilizer. The results show that there is a diversity of pests and spiders. Applying microbial-organic fertilizer affected the number of tea green leaf hopper and tea thrips. Using fertilizer as treatment 3 (CT3) resulted in lower number of tea green leaf hopper and tea thrips than control.