Field evaluation of the sex pheromone of cotton spotted bollworm, Earias insulana Boisduval Lep.: Noctuidae
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عنوان دوره: سومین کنگره بین المللی حشره شناسی ایران
نویسندگان
1Agricultural Entomology Research Dept., Iranian Research Institute of Plant Protection, Agricultural Research Education and Extension Organization, AREEO, Tehran, Iran,
2Pesticides Research Dept., Iranian Research Institute of Plant Protection, Agricultural Research Education and Extension Organization, AREEO, Tehran, Iran,
3Plant Protection Department, Khorasan Razavi Agricultural and Natural Resources Research and Education Center, AREEO, Mashhad, Iran,
چکیده
Cotton spotted bollworm, Earias insulana Boisduval is one of the important insect pests of cotton that is spread in Africa, Southern Europe, the Near and Middle East. At present due to the increasing damage of this pest in some cotton growing regions of Iran and the avoidance of chemical pesticides application in cotton fields, particular attention has been paid to the use of natural eco-friendly methods including the use of synthetic pheromones. The E,E-10,12-hexadecadienal has been identified as the sex pheromone of E. insulana. This compound has been synthesized in the Iranian Research Institute of Plant Protection (IRIPP) and was loaded into rubber septa dispenser (1×2 cm) with 0.5, 1 and 2 mg loading rates (Concentration: 0.03 mg/µl). We compared the efficacy of different loading rates synthesized pheromones with a commercial product from Russell Company (United Kingdom) in a randomized complete block design with 4 replicates at the cotton fields of Garmsar and Kashmar in 2018. Funnel traps were used and the dispensers were replaced every 4 weeks. The results showed significant differences between treatments. Synthesized pheromone with 1 mg loading rate and the commercial pheromone had maximum moth catches/trap (11.50±2.78 and 12.87±2.00 moths / trap, respectively). Synthesized pheromone with 2 and 0.5 mg loading rates had significantly less moth catches/trap (4.87±1.34 and 2.62±0.92 moths / trap, respectively). We conclude that 1 mg loading rate dispensers of IRIPP and Russell Company placed in the funnel traps are suitable for trapping of E. insulana in cotton fields.
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