Kiwi May Prevent Brown Spot Disease
Kiwifruit brown spot is one of the main diseases of kiwifruit. It occurs from May to July every year. It mainly damages the leaves and stems. It is an important cause of early fruit drop in kiwifruit and has a great influence on the yield and quality of kiwifruit.
Prevention and control techniques 1 Strengthen field management, timely irrigation, drainage, and tipping, improve ventilation and light transmission conditions in the field, spray foliar fertilizer to protect leaves, and increase leaf photosynthesis; 2 increase organic fertilizer to improve soil structure and improve soil permeability. Reasonable topdressing of organic compound fertilizers combined with trace element fertilizer supplementation to improve tree vigor and tree resistance in an all-round way; 3 Chemical control can use fentanyl alcohol suspension agent 3000 times and 18.7% cyclopropyl azoxycilit ) The suspoemulsion is used 1,500 to 2,000 times and 12.5% ​​epoxiconazole (Obo) suspension agent 3000 times, alternately at intervals of 10 to 15 days, and spray 2 to 3 times.
Precautions 1 In the case of high temperature, rainy weather, fog, and dew, do not use Bordeaux mixture and copper-containing preparations to prevent phytotoxicity; 2 Avoid high-temperature application during high-temperature period, and choose morning. Before 10 o'clock and after 17 o'clock in the afternoon, pesticides are applied to ensure the safety of operators and crops. 3 Operate in strict accordance with the safe drug regulations and do a good job in safety protection.
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