Less topdressing of walnut in rainy season
From July to August, walnut trees have little demand for fertilizer, especially not topdressing nitrogen fertilizer. Some fruit farmers think that it is not easy to rain, we should hurry to apply some fertilizer, but they do not realize that this is a wrong idea. Topdressing at this time will lead to walnut fruit hard shell is not hard. For young trees, topdressing at this time will cause branches to flourish and affect the fruit of the following year. However, since July-August is the filling period of walnut kernels, if topdressing is really needed, we can start from the first ten days of July to spray potassium dihydrogen phosphate solution every other month with a sprayer for foliar topdressing.
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Integrated Control of Walnut Branch Blight
Walnut branch blight is caused by fungal infection and mainly harms the branches. It occurs everywhere, the general disease plant rate is 20-30%, and the serious disease plant rate is more than 80%, causing a large number of branches to die, directly affecting the tree growth and the yield and quality of walnut. Therefore, it is necessary to timely prevent and control the disease and promote the tree.
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Control of bacterial black spot of walnut
Walnut bacterial black spot mainly harms walnut fruit, the diseased fruit rate is 10% Mur40%, resulting in fruit blackening, decay, early fall, walnut kernel dryness. In addition, it also harms leaves, tender shoots, and the damage rate of some plots is up to 20%, 40%. Symptoms: the damaged young green fruit has brown oil-soaked spots on the peel at the initial stage.
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