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Indoor Joint Toxicity Determination of Avermectin to Mono Formamidine Hydrochloride in Different Proportions on Psylla willieti (PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年11期
Page:
113-115
Research Field:
Publishing date:

Info

Title:
Indoor Joint Toxicity Determination of Avermectin to Mono Formamidine Hydrochloride in Different Proportions on Psylla willieti
Author(s):
MA Jian-hua1; HUANG Hui-ling2; WANG Huan3; LI Wen-ling4; DU Yu-ning1
1.Institute of Plant Protection,Ningxia Academy of Agriculture and Forestry Sciences,Ningxia Key Laboratory of Plant Pest Control,Yinchuan,Ningxia 750002;
2.The Prospecting Design Institute of Agriculture in Ningxia,Yinchuan,Ningxia 750002;
3.Nuanquan Agricultural Branch of Ningxia Agricultural Reclamation Shahu Industrial Co. Ltd.,Yinchuan, Ningxia 750206;
4.Sunjiatan Agriculture Comprehensive Development Zone Management Committee,Yinchuan,Ningxia 751100
Keywords:
Psylla willieti; cotoxicity coefficient; mix; avermectin; mono formamidine hydrochloride
PACS:
S 763.3
DOI:
-
Abstract:
Taking Psylla willieti as research object,the velum contacting method (FDA method) was used to determine joint toxicity determination of different ratio of avermectin to mono formamidine hydrochloride on Psylla willieti.The results showed that the mixed ratio of avermectin to mono formamidine hydrochloride had a strong synergistic action when the ratio were 1∶24 and 1∶29.The cotoxicity coefficient (CTC) was from 144.6~1 093.8.The cotoxicity coefficient of different ratio (avermectin-mono formamidine:0.5∶34.5,0.5∶29.5,0.5∶24.5) was 281.50,152.96,and 154.88 at 72 h respectively.The synergist action appeared on a ratio of 0.5∶34.5 (avermectin∶mono formamidine) at 48 h.The antagonism effect was found in other ratios at 24 h and 48 h because cotoxicity coefficient was less than 80.The mix of biological pesticide (avermectin) and chemical pesticide (mono formamidine) was an efficient method which delayed resistance of pest population greatly.

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Memo

Memo:
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Last Update: 2014-08-05