Abstract:

To screen effective and environmental-friendly fungicides for mulberry sorosis disease control, the control effects of different combination patterns of fungicides were evaluated by field tests. The results showed that the control effect investigated in full fruit period was over 93% by spraying fungicides 3-4 times during the initial flowering period, full bloom period and late flowering period in each control area (treatment 1 to treatment 4). The quality indexes such as the average number of fruits on a single branch, the healthy fruit rate and the total weight of fruits on a single branch were superior to that of the control (treatment 5). The amount of pesticide residue in mulberry fruit conformed to the national standard. It is suggested that the mulberry plantation should be closed with lime sulphur in autumn and winter, and the fungicide combination of 50% diazimide WDG 1500 times solution+ 50% isomicarbazide SC 1000 times solution+ 75% pentazolol WDG 3500 times solution should be applied in the appropriate period. Other control patterns could be used as alternative methods to avoid or slow down the emergence of resistance.

Key words: Mulberry, Mulberry Sorosis Disease, Fungicides, Control Pattern, IPM