Volume 19 Part 1 Article 102
Title: Insecticidal Activity of Two Plant Extracts against Lycoriella sp.(Diptera: Sciaridae) in Button Mushroom Cultivation
Author: Byung-Joo Lee, Mi-Ae Lee, Yong-Gyun Kim
The sciarid mushroom fly Lycoriella sp.(Diptera: Sciaridae) is one of the most common and serious pests of commercial production of button mushroom[Agaricus bisporus (Lange) Imbach] in Korea. The present study investigated insecticidal activity of two plant extracts against Lycoriella sp. larvae. The extract parts of two plants tested were fruit of Ginko biloba and root of Phytolacca americana. The extracts of two plants was found to have an high insecticidal effect on the larvae of Lycoriella sp. and no inhibitory effect on the mycelial growth of A. bisporus at 1% concentration. They were applied at spawn run, after casing soil, and pinning with 2.5L/m2 each time and compared with diflubenzuron and water-treated control. Insecticidal effect of Ginko biloba fruit and Phytolacca americana root on adult mushroom flies were 77.2 and 78.3%, respectively. Fruiting body damages of A. bisporus by mushroom fly larvae in the treatments of Ginko biloba fruit and Phytolacca americana root were 13.5 and 12.7%, respectively compared to water-treated control. Treatments with Ginko biloba fruit and Phytolacca americana root resulted in 13~14% significantly higher fruiting body yield of A. bisporus compared to to water-treated control. The results suggest that both plant extracts tested may have a potential as natural insecticides for the control of Lycoriella sp. mushroom flies in environment friendly cultivation.