There are readers who have consulted and said that in the past few years, under the same conditions of water and fertilizer management, only one type of Hemp walnut had white tips and white spots in the mature walnut shells.
The author believes that the recent emergence of walnut leaves, generally will not affect the budding of walnut trees next spring, little impact on the next year's output. The appearance of white spots and white tips in the walnut shells during ripening period of walnuts is mainly due to the dense planting, poor ventilation and light transmission, which affects the absorption and accumulation of calcium, and thinning is the main measure that can be taken.
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