Abstract: Laboratory and field experiments showed that high molecular organic acid ligation basic copper sulfate is a better fungicide,and is safe to most crops.The control effect of high molecular organic acid ligation basic copper sulfate diluted to 300,400,500 times,Ludebao diluted to 300 times,Hujaofeisuantong diluted to 300 times were tested.The results showed that the effect of inhibiting the germination of spore of A.mali is 935%,852%,654%,652%,859% and 756% respectively,and the inhibition rate of hyphae growth of A.mali is 726%,653%,510%,423%,723% and 606% respectively.The control effect is 914%,704%,649%,530%,815% and 739% respectively in field experiment.The test effect to A. solani is similar to A.mali. It is safe to the 8 test crops including apple and cucumber in field experiments.

Key words: High molecular organic acid, Basic copper sulfate, Bordeaux mixture, Fungicides

CLC Number: 

• S482.2