Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

The effect of various insecticides on the control of initial pests and on the physiological quality of sunflower seeds.

Abstract

Studies were conducted to test various insecticides in the treatment of sunflower seeds for the control of Cerotoma arcuatus [Cerotoma arcuata] (Coleoptera: Chrysomelidae), Bemisia tabaci (Hemiptera: Aleyrodidae), Anticarsia gemmatalis (Lepidoptera: Noctuidae) and Spodoptera frugiperda (Lepidoptera: Noctuidae) and assess their influence on the physiological quality of seeds during storage. The results showed that thiodicarb 600 g.a.i./100 kg of seeds achieved close to 80, 100 and 85% of control against first instar A. gemmatalis, second instar S. frugiperda and adult C. arcuatus, respectively. However, this treatment was inefficient against third instar S. frugiperda and B. tabaci. Thiodicarb + imidacloprid (157.5+52.5), thiamethoxam (210), thiamethoxam (280), imidacloprid (245) and fipronil (50 g.a.i./100 kg of seeds) also achieved 80% control against C. arcuatus adults. Against A. gemmatalis, only fipronil (50 g.a.i.) and azadirachtin (10 and 20 g.a.i./100 kg of seeds) did not achieve more than 80% control. Against B. tabaci, no tested treatment reached 80% of efficacy. None of the tested insecticides harmed seed germination or emergence during the different storage periods (up to 4 months after seed treatment).