The Studies on Avatar in Controlling Ectropis oblique and the Impacts on the Community of Predators in the Tea Fields

• 영문명: The Studies on Avatar in Controlling Ectropis oblique and the Impacts on the Community of Predators in the Tea Fields
• 발행기관: 한국거미연구소
• 저자명: Zhengtian Zhang Liang Zi an Yu Peng Jian Chen Joo-Pil Kim
• 간행물 정보: 『한국거미』제21권 제2호, 155~162쪽, 전체 8쪽
• 주제분류: 자연과학 > 생물학
• 파일형태: PDF
• 발행일자: 2005.12.01

영문 초록

The ability of controlling Ectropis oblique and the impacts on the community characters of predators in the tea fields were investigated by spraying with Avatar, thiodan, dimethoate and beta-cypermethrin. The results showed that the mortality of E. oblique reached 59% after three days treated by Avatar (6750times, 5400 times, 4500 times and 750 times), and amounted to 74% after nine days and run up to 90% after 12 days. The orders of controlling E. oblique treated by 4 insecticides were: Avatar>thiodan> dimethoate> beta-cypermethrinl, the differences between mean mortality of E. oblique are significant among the different pesticides (p<0.05). The diversity index and evenness of the predators community treated with Avatar were both lower than those of control, while the dominances and dominant concentrations are higher than those of control. Its stability of predators community was worst, the orders were: Avatar＜thiodan＜dimethoate＜beta-cypermethrin＜control. The toxicity of the four insecticides to Hylyphantes graminicola was avatar, thiodan, dimethoate and beta-cypermethrin in small orders.

목차

Abstract

INTRODUCTION

MATERIAL AND METHODS

RESULTS

DISCUSSION

ACKNOWLEDGMENT

REFERENCES