Kiwifruit root rot is a devastating disease. In August and September, it was the peak period of disease. For the prevention and control of the disease, Li Longshan, a researcher at Northwest Agriculture and Forestry University, gave scientific guidance to the majority of fruit farmers.
Agricultural control 1 Cultivate disease-free seedlings, choose disease-free seedlings for cultivation of gramineous plants for many years; fertilize fertilizers or cakes with adequate maturity; apply viscous heavy soils with organic fertilizers, and conditionally add sand; With the addition of organic fertilizers, it has been improved by adding heavy clay. When the pH value is greater than 8, it cannot be cultivated, and the soil pH must be adjusted to be neutral or slightly acidic after cultivation. 2 In the new park, remove all plant residues in the soil. 3 In the hot season, it is necessary to use reasonable irrigation methods, and avoid flooding or shrub irrigation, and sprinkler irrigation or drip irrigation. 4 The groundwater level is high, the terrain is low, and the poorly-drained orchard should be drained in time after prolonged rainfall or heavy rain. 5 Reasonable load, serious "overload" of fruit trees will cause tree vigor to weaken and resistance to decline.
Pharmaceutics control For diseased mature orchards, use 0.8% bacteria to destroy 300 times or 40% carbendazim 400 times to irrigate roots. Each tree is filled with 2 to 3 kilograms of liquid medicine and every 15 days for irrigation. 2 to 3 times, can significantly inhibit the disease and increase the yield per plant.
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