[Snail control by using soil pasting mixed with niclosamide].
OBJECTIVE
To evaluate the effect of snail control through soil pasting mixed with niclosamide.


METHODS
Four sites were selected in different epidemic areas in Sichuan province. Soil pasting mixed with niclosamide was carried on, and the dosage was 0 g/m2, 4 g/m2, 6 g/m2, 8 g/m2 and 10 g/m2 respectively. The mortality rate of snail and the density of snail were observed after 7, 15, 30, 90 and 180 days.


RESULTS
The mortality rate of snail was more than 43.3% in blank group after 30 days. The mortality rate of snail was from 75.3% to 100.0% at 4 g/m2 group after 30 days. The mortality rate of snail in 4 g/m2 group was significantly higher than that in the blank group (chi2 = 31.27, P < 0.05). There was no significant difference in the mortality rate of snail among all study groups (chi2 = 1.07, P > 0.05). The decrease rate of snail density was more than 90%. The mortality rate of snail was about 30% higher in Chantu group than Qutu group. The unit cost of Pasting-Mixing Drug with Soil was from 5 to 7 times of spray method, but the total cost was similar for the. two methods at the endpoint of the snail control.


CONCLUSIONS
The effect of soil pasting mixed with niclosamide is good, and the dosage of 4-6 g/m2 is suggested in snail control.
Wu
Zi-song
ZS
Institute of Parasitic Disease Prevention and Control, Sichuan Center for Disease Prevention and Control, Chengdu 610041, China.
Wang
Tian-gui
TG
Zhang
Xiao-sheng
XS
Zhong
Bo
B
Xu
Liang
L
Gao
Gui-bin
GB
Tan
Ben-fu
BF
Mao
Yong
Y
Tang
Meng
M
Xie
Ming-kang
MK
Yihuo
Wu-li
WL
Wang
Shi-zhong
SZ
Ma
Chun-hua
CH
Xu
Fa-sen
FS
Qiu
Dong-chuan
DC
D000818:Animals; D008975:Molluscacides; D009534:Niclosamide; D010571:Pest Control; D012552:Schistosomiasis / Q000453:epidemiology / Q000517:prevention & control*; D012908:Snails; D012987:Soil
D008975:Molluscacides; D012987:Soil; D009534:Niclosamide