|Table of Contents|

Impact Analysis of Ambient Temperature on Occurrence Dynamics of Grapholita molesta (Busck) in Pear Orchard

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年11
Page:
25-31
Research Field:
Publishing date:

Info

Title:
Impact Analysis of Ambient Temperature on Occurrence Dynamics of Grapholita molesta (Busck) in Pear Orchard
Author(s):
TANG Runxuan1; TAN Qiuyue1; 2; ZHANG Jing1; LIU Xiaoxia1; ZHANG Qingwen1; LI Zhen1
(1.Department of Entomology,China Agricultural University,Beijing 100193；2.Agricultural and Rural Committee of Shizhu Tujia Autonomous County,Chongqing 409199)
Keywords:
oriental fruit moth; temperature; occurrence dynamic; growth and development; reproduction
PACS:
-
DOI:
10.11937/bfyy.20194027
Abstract:
The main experimental material was the serious pest,Grapholita molesta(Busck),which was hazardous to the planting and yield of pears,apples and peaches.By the means of field survey on population occurrence in pear orchard,correlation analysis with ambient temperature and biological investigation of development and reproduction under 15,20,25,30,35 ℃ in lab,the relationship between occurrence of G.molesta and environmental temperature was studied,in order to provide useful evidence for deeper understanding about the impact of temperature on the occurrence dynamics,reproduction and development of G.molesta and should be useful for accurate forecasting of this pest.The results showed that in the region of Beijing and nearby,the population amount of G.molesta in pear orchard showed significantly positive correlation to the daily highest temperature from May to early August and from late-September to early-October.Laboratory investigation showed that the development rate and fecundity all positively correlated with ambient temperature under 15-25 ℃ and the highest development rate and fecundity were observed under 30 ℃.Therefore,environmental temperature was found as a key ecological factor to the population dynamics of G.molesta in field and was also a critical index for accurate forecast of this serious pest in orchard.

References:

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Last Update: 2020-08-10