Inseticida no tratamento de semente de algodão contra lagarta curuquerê (Alabama argillacea Hübner) e o desenvolvimento inicial da cultura

Abstract

The search for new technologies that will provide the farmer to increase productivity and reduce costs, it constitutes one of the challenges for the continuity of cotton. Seed treatment is only the first step in pest management in cotton, but can be the difference between a professional and an ideal seeding the crop. From the farmer's constant search for new technologies to control disease and the importance of seed treatment aimed to work with this, test the Premio ® insecticide at different doses in the treatment of cottonseed to assess the incidence and development of caterpillar leafworm initial worships the first 21 days after emergence. The treatment involved only one fungicide 300 ml Vitavax; Treatment 2 - 300 mL Vitavax + 600g Cruiser; Treatment 3 - 300 mL Vitavax + 600g Cruiser + 50ml Premio; Treatment 4 - 300 ml Vitavax + 25 ml Premio; Treatment T5 - 300 ml Vitavax + 50 ml Premio; Treatment 6 - 300 ml Vitavax + 75 ml Premio. The dose mentioned above is for 100 kg of seeds. The doses mentioned above refer to ch (commercial product). During the 21 days of evaluation, no incidence of defoliating pests. No difference was found in treatments where germination was used insecticide Premio than those who did not. There was no difference between treatments in relation to the attack larvae, it is not possible to say that the insecticide Award controlled this pest. For the evaluation of plant height, it was possible to observe a difference between treatments, whereas those who received the Premio dosage achieved an average around 17% lower than the height of treatments without.