[Field test and lab experiment on control efficacy of the pathogen of opium poppy mildew].
OBJECTIVE
To screen effectual fungicides for field control because of the seriousness of opium poppy mildew and importance of chemical control on plant diseases.


METHODS
Seven fungicides were screened in Lab experiment and field test during 1996-1997.


CONCLUSIONS
All of them and their different dosages were effective to control conidia of Peronospora arborescens. Among them, 72.2% propamocarb of 1203 and 902.5 ppm were the most effective both in Lab experiment and field test with efficacy 79.91% and 79.33% respectively in field test, and the efficacy of other fungicides was over 50%. Seven fungicides tested can be used to control nonsystematic symptom of opium poppy mildew.
Chai
Zhao-xiang
ZX
Plant Protection Department of Gansu Agricultural University, Lanzhou 730070, Gansu, China.
Li
Jin-hua
JH
Li
Min-quan
MQ
Dong
Ke-yong
KY
Wei
Yong-liang
YL
D002219:Carbamates / Q000494:pharmacology; D005659:Fungicides, Industrial / Q000494:pharmacology*; D009868:Oomycetes / Q000187:drug effects* / Q000472:pathogenicity; D010207:Papaver / Q000382:microbiology*; D010935:Plant Diseases / Q000382:microbiology*; D010946:Plants, Medicinal / Q000382:microbiology
D002219:Carbamates; D005659:Fungicides, Industrial; C033205:propamocarb