Study on the control effect of different biostimulants on strawberry powdery mildew

COS(Chitosan oligosaccharide) 3000 times liquid (5g mixed with water 15kg) has a short duration of effect, but it is quick and non-toxic, and has dual biological regulation functions of medicinal and fertilizer effects. It can also promote the growth of strawberries while inhibiting powdery mildew.

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