At present, during the grape harvest season, fruit farmers are busy in the present year. Relevant experts said that proper application of calcium nitrate before grape harvesting can significantly improve the quality of grapes. Those who have had planting experience know that grape fruit peels are deficient in calcium. It can cause bad phenomena such as rotten, browning, and fruit detachment from the ear. Therefore, calcium spraying on the grapes before harvesting can increase the calcium content of the grapes, improve the quality and yield of the grapes, and increase economic benefits.
Grapes want to improve fruit quality, foliar application of calcium nitrate
Grapes want to improve the quality of the fruit. Foliar application of calcium nitrate can be carried out on the grapes from 1 month to 10 days before harvesting. It is advisable to spray calcium nitrate. Calcium is sprayed during the berry phase and is more easily absorbed. The spray concentration is preferably 1%. Spraying 10 days before harvesting, the concentration should be 1.5%. Calcium spray on grape leaves should be better before 10 o'clock in the morning and in the evening. On sunny days with high temperature and dryness, the concentration of calcium spray should be smaller. If it rains within 8 hours after spraying, it should be sprayed after the rain. once.
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