Control of powdery mildew in peach trees
The prevention and control methods of peach powdery mildew are as follows: first, remove the diseased leaves after falling leaves and reduce the source of the disease. Second, spray chemical protection during the growing period: at the initial stage of the disease, spray 0.2 to 0.3 Baumetolite sulfur mixture, or 15% wettable powder trimethoprim 2000 to 3000 times, or 1500 to 2000 times methyl topiramate. Third, improve the ventilation and light transmission conditions: the greenhouse peach trees should improve the light conditions by adjusting the tree structure, population structure and the amount of branches and leaves; through ventilation to reduce humidity, resulting in environmental conditions that are not conducive to pathogen infection.
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Control of nectarine pest white starflower beetle
Adult body length 20~24 mm, body copper color, pronotum and elytra have irregular white spots more than 10. Adults nibble on ripe fruit, depriving it of commercial value. White starflower beetle occurs 1 generation per year, overwintering in soil and organic fertilizer as larvae, and easy to grow in chicken manure.
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Canopy nectarine management points through
To prevent peach from flower and fruit dropping in greenhouse, we should strengthen comprehensive management, ensure the nutrition supply, fruit setting rate and the close relationship between the development of young fruit and the supply of nutrients. First of all, we must strengthen the late management of the previous year, form good flower buds, and improve nutritional levels, such as autumn leaf protection.
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