Use of sugars as alternative to chemical control: trials carried out on thrips associated with olive tree

Foliar spraying of infradoses sugars (glucose, fructose or sucrose) induces plant resistance to pests that are particularly difficult combat. These include thrips, which can cause flower abortion, stunting and deformation olives, resulting in significant crop losses. Randomised block trials were conducted during three years (2017 2019), on two cultivars Chemlal Sigoise, an olive grove Batna province (Algeria), with the aim determining most effective dose type sugar thrips populations, evaluate effectiveness combining chemical treatment, as well possibility reducing latter. The results showed sucrose at a concentration 100 ppm was efficacy higher than glucose fructose, both tested. combination insecticide resulted synergistic effect gain alone, + low D1 identical recommended D2. It is therefore possible reduce while maintaining good treatment for control these pests.