Causes of Navel Orange Fruit Cracking and Control Methods
Why do navel oranges crack? How should they be prevented and controlled? Please give guidance. Generally, navel orange fruit cracking mostly occurs during the rapid fruit expansion stage and the fruit ripening stage. This is caused by the combined effects of fluctuations in soil moisture, temperature and relative air humidity, which make the flesh grow faster than the peel. Preventing and controlling navel orange fruit cracking...
Why do navel oranges crack? How should they be prevented and controlled? Please give guidance
Generally, navel orange fruit cracking mostly occurs during the rapid fruit expansion stage and the fruit ripening stage. This is caused by the combined effects of fluctuations in soil moisture, temperature and relative air humidity, which make the flesh grow faster than the peel.
Technical measures for preventing and controlling navel orange fruit cracking include:
① Choose varieties that are less prone to cracking, such as Baihele navel orange.
② Deep plowing to improve the soil, apply more organic fertilizer, induce the roots to extend deep into the soil, and avoid or reduce sharp changes in soil moisture.
③ Apply more potassium fertilizer to promote peel development and thickening, and resist the occurrence of fruit cracking. Spray 0.1% potassium sulfate or 3% wood ash extract.
④ Cover the soil in time to prevent drought and irrigate to combat drought.
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