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How to control kiwi day burning disease
Jun 06, 2017

Kiwi day burning disease is a common physiological disease, is caused by high temperature strong sunshine in summer, leading to lower fruit quality, seriously affect the fruit rate, reduce economic efficiency.

 

Pathogenesis of Kiwi day burning disease

 Most of the kiwi burning disease occurred in the hot season, the climate is dry, persistent strong sunshine is easy to happen, especially in the late growth of the fruit 7 to 9 months, leaf layer thin, sparse leaves, fruit exposed situation serious. Weak trees, sick trees, overloaded fruit trees on the burning rate of up to 15% to 25%. Soil moisture supply is insufficient, pruning too heavy, fruit shade no less, poor water retention plots, prone to serious sunburn.

 

Prevention  of Kiwi day burning disease

Strengthen the orchard management Orchard water loss should be timely irrigation, conditional orchards every few days spray a water. Orchard cover, wheat bran or wheat can be covered with fruit trees between the lines to reduce the evaporation of soil moisture in the fruit along the grass or grass with the newspaper shade, to avoid direct damage to the fruit of the West.

 

Spray protection in the 6 to 7 months before the hot season is approaching, combined with the prevention and treatment of other diseases, can be sprayed liquid fertilizer fruit amino acid 400 times, every 10 days or so spray 1, even spray 2 to 3 times, can also be sprayed Drought resistance modifier fulvic acid, according to the age of trees, spraying 50 to 100 ml per acre, can reduce the orchard temperature, but also rapid supply of nutrients. The kiwi Taoyuan, which has not been expanded, can be sprayed with 0.1% ~ 0.3% potassium dihydrogen phosphate or 0.5% potassium sulfate, and sprayed with 2 ~ 3 times, which can effectively achieve the effect of drought resistance.








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