The formation of grape granule size, in addition to poor pollination and fertilization, caused the lack of zinc when the size of the fruit is not neat, the fruit is not developed, the main reason for the formation of beans, when the lack of zinc leaf growth is poor, small and thin leaves, short internodes. The sensitivity of different grape varieties to zinc is different. The varieties such as non-nuclear white, Gina, Rose, Carignan, and Red Earth have a large demand for zinc. Alkaline soil and sandy loam soil are prone to the loss of zinc. Pay attention to increase organic fertilizer. Zinc fertilizer was applied outside the roots, and 0.1%-0.3% of zinc sulfate was sprayed before flowering until the young fruit was growing. Spraying zinc on the stem can increase the absorption of zinc by the plant by spraying the stem with 10% zinc sulfate solution.
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