Effects of chlorantraniliprole on rice planthoppers and their parasitic natural enemies
Author of the article:SHEN Li-Yang;WANG Hui;HAN Ke-Hong;PU Lei;XIE Mei-Qi;HUA Hong-Xia;CAI Wan-Lun
Author's Workplace:College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China;College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
Key Words:chlorantraniliprole; rice planthoppers; parasitic natural enemies; paddy arthropods
Abstract:
[Objectives] To study the effects of chlorantraniliproleon on rice planthoppers and their parasitic natural
enemies in paddy fields, together with changes in arthropod community
parameters, in order to provide a scientific basis for the rational use of
chlorantraniliprole. [Methods] Four
rice fields were treated with chlorantraniliprole and four control rice fields
were selected in Suizhou city and Xiaogan city, Hubei province. Arthropods were
collected using the suction method and their dominance, population density, and
the correlation between rice planthopper abundance and that of their parasitic
natural enemies, was compared between treated and control rice fields. [Results] In most cases, there was no significant
difference in the dominance and population density of rice planthoppers and
that of their parasitic natural enemies between treated and control fields in
2011 and 2012. There was, however, a significant positive correlation between
the number of rice planthoppers and that of their parasitic natural enemies in
control and treatment fields in Xiaogan (2011: control field, R2=0.249, P=0.007; treated field, R2=0.462,P<0.001;2012: control field, R2=0.189, P=0.021; treated field, R2=0.212, P<0.014). However, no
significant correlation between rice planthopper abundance and that of their
parasitic natural enemies was found in the two treatment fields in Suizhou over
these two growing seasons. [Conclusion] The application of
chloramphetamine to rice fields did not affect the ecological function of
parasitic natural enemies of the rice planthopper, and did not adversely affect
non-target pests or parasitic natural enemies of the rice planthopper.