Control Effects of 12 Kinds of Insecticides on Sugarcane Pests at Different Periods.

[Objective] The paper was to study control effects of 12 kinds of insecticides on sugarcane pests at different periods. [Method] By field experiment, the control effects of different insecticides against sugarcane pests at planting stage, seedling stage and tillering stage of sugarcane were studied. [Result] After seedcane was treated by Chlorantraniliprole, Durivo and Seed soaking, the dead heart seedlings were significantly reduced in fields, and the control effects were 87.13% ± 12.87%, 85.22% ± 14.78%, 82.71% ± 17.29%, respectively; Durivo (seedling emergence rate is 63.00% ± 10.30%) and Seed soaking (seedling emergence rate is 57.75% ± 4.50%) could also significantly enhance seedling emergence rate. After "removal-irrigation" treatment during seedling stage, the control effects of Flubendiamide (76.26% ± 4.31%) and Chlorantraniliprole (61.66% ± 6.65%) against sugarcane stem borer were significantly higher than Virtako (60.17% ± 7.06%) , Deltamethrin(38.75% ± 9.88%) , lambda-cyhalothrin (54.06% ± 6.83%) , 18% Dimehypo AS (37.98% ± 10.31%) and Dipterex (38.64% ± 9.34%) . During tillering stage, with the increased application of 3.6% Dimehypo GR in cultivation and earthing up, the control effect on stem borer was significantly increased, and the control effect reached (72.03% ± 17.06%) as the dosage was 120 kg/hm2 ; when the dosage of phoxim exceeded 30 kg/hm2, the control effect on underground pests reached 44.00% ± 14.80% , and the control effect did not have significant difference as the dosage was ranged from 30 kg/hm2 to 60 kg/hm2. [Conclusion] The paper provided scientific basis for selection of different control methods, different chemicals and dosages against pests during different periods. [ABSTRACT FROM AUTHOR]