What Causes Watermelon Leaves to Turn Yellow
Comprehensive explanation of why watermelon leaves turn yellow, related to flower planting experience. Let's explore this topic together next.
What Causes Watermelon Leaves to Turn Yellow
During the planting process, if fertilization is improper or pests and diseases occur, it can lead to yellowing and even drying of watermelon leaves. When applying fertilizer, it is important to maintain balance, not just applying macroelements while neglecting microelements. If diseases occur, it is necessary to spray medication promptly. Be careful not to overwater, ensure ventilation, use more organic fertilizers to improve the disease resistance of watermelon.
Watermelon has the effects of clearing heat, quenching thirst, promoting urination, and detoxifying alcohol. The demand for watermelon is also increasing year by year. However, if fertilization is improper or pests and diseases occur during planting, it can lead to yellow leaf disease in watermelon, causing leaves to turn yellow and even dry up. Timely remedial measures should be taken.
Reasons for Yellowing of Watermelon Leaves
1. Improper Fertilization
Yellowing of watermelon leaves can be caused by using foliar fertilizers containing hormonal substances or long-term use of large amounts of chemical fertilizers, which can burn the plant's roots and cause the leaves to become rigid, fade, and turn yellow, harming the watermelon.
2. Lack of Microelements
In recent years, with the good market conditions and planting profits for watermelon, it can lead to excessive reproduction of watermelon, easily causing a deficiency of trace elements, especially potassium, calcium, and boron. The deficiency of these trace elements can lead to varying degrees of yellowing in watermelon leaves.
3. Pest and Disease Damage
Yellowing of watermelon leaves may also be caused by pest and disease infections. For example, if infected with downy mildew, spots will appear on the leaves and then gradually turn yellow. There may also be damage from red spider mites, which suck the sap from the leaves, causing them to turn yellow.
Methods for Correcting Yellowing Leaves
1. Fertilization: When applying fertilizers, be sure to maintain balance, not just applying macroelements while neglecting microelements. Promptly supplement elements like potassium, magnesium, calcium, and boron, especially during the rapid expansion of watermelon fruits, which require a higher amount of nutrients. Make sure they are sufficient.
2. Pest and Diseases: If watermelon is infected with downy mildew, it can be treated with mancozeb. If red spider mites appear, they can be treated with abamectin. Be careful not to overwater, ensure proper ventilation, and use more organic fertilizers to improve the disease resistance of watermelon.
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