Symptoms of chestnut blight
Symptoms of chestnut blight: pathogen produces discolored spots on smooth bark, round or irregular; on rough bark, the edges of the spots are not obvious, and then continue to expand, and the bark cracks longitudinally. In spring, orange verrucose beds are visible on the affected bark. After autumn, the seed seat turns orange red to sauce red, among which dark brown columns gradually form. Between the diseased bark and xylem, feather-like fan-shaped hyphae can be seen, initially dirty white, then yellow brown.
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Early High-yield techniques of Young Chestnut trees
1 Technical measures to promote the formation of female flowers 1) watering in early spring. Three weeks before sprouting is the morphological differentiation period of female flowers, which meets the water needs of trees and makes the fruiting branches stout and more buds, which lays a foundation for the formation of female flower buds. 2) foliar topdressing. When the basal leaf just unfolds and changes from yellow to green, it is sprayed with 1000 times liquid PP200....
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Pollution-free cultivation techniques of Castanea mollissima
The larvae of the chestnut borer eat the chestnut fruit, which makes the insect feces in the seeds accumulate, which is unedible, and causes fruit drop, which has a great impact on the yield and quality. Its hosts include peach, plum, pear, sunflower, cornstalk and so on. Control method 1. Pick the fallen fruit, remove the insect fruit, and destroy it. 2. Chemical control. Master the first.
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