Preliminary study on the control effect of four molluscicides on Pomacea canaliculata and their safeties to crab
The efficacy tests were carried out in paddy field and indoor environment by four molluscicides,and the safeties of two molluscicides on crab was evaluated.The results showed that in the absence of water retention in rice fields,niclosamide 70％WP 600 g/hm2,750 g/hm2,and metaldehyde·niclosamide 26％SC 1 800 g/hm2 had good control effects on Pomacea canaliculata.At the 7th day after treatment,the control effects were 96.45％,97.17％,and 97.87％,respectively.The above molluscicides showed good quick bioactivity against Pomacea canaliculata in rice fields.Under indoor conditions,metaldehyde·niclosamide 26％SC 1 800 g/hm2 and metaldehyde 6％GR 9 000 g/hm2 had good control effects on Pomacea canaliculata.The control effects were 100.00％and 95.83％at the 24th hour after treatment.Under indoor conditions,metaldehyde and niclosamide were sensitive and had poor safety to crabs.
万方数据
维普
