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Maize lack of micro-diet diagnostic recovery
In the process of corn growth and development, a deficiency in essential trace elements can lead to various visible symptoms. Identifying these deficiencies and applying the appropriate micronutrient fertilizers is a crucial practice in modern corn farming. Proper nutrient management not only improves plant health but also enhances yield and quality.
Zinc deficiency typically manifests as chlorosis in young leaves, which appear pale yellow with a white or bleached appearance. The middle leaves show distinct green veins, while the older leaves at the base turn gray-brown. To correct this, 1.5 to 2.0 kg of zinc sulfate can be applied directly to the soil, or a 0.2 to 0.3% zinc sulfate solution can be sprayed on the foliage. It is recommended to apply the spray three times, with an interval of 5 to 6 days between each application.
Molybdenum deficiency causes the older leaves to lose their green color, with yellowing occurring between the veins. The leaf margins may curl inward, and the grains may become shriveled. In such cases, a foliar spray of 0.15 to 0.2% ammonium molybdate is effective. This treatment should be applied once or twice, depending on the severity of the deficiency.
Iron deficiency is characterized by chlorotic spots on the young leaves, with the veins remaining green and forming clear stripes. The stems and leaf sheaths may take on a purple-red hue. To address this, a 0.2 to 0.3% ferrous sulfate solution can be sprayed on the leaves, with applications repeated two to three times every 5 to 7 days.
Boron deficiency leads to poor growth in young leaves, which may fail to open and eventually turn white before withering. Older leaves display white stripes between the veins, and the overall plant becomes stunted and weak. A foliar spray of 85 grams of borax or 60 to 60 grams of boric acid per 100 liters of water is recommended, applied three times with intervals of 5 to 7 days.
Manganese deficiency often starts with new leaves showing yellowing between the veins, while the veins remain green. The leaves may become soft, and the roots may appear thin and white. To treat this, a 0.2% manganese sulfate solution can be sprayed two to three times, with a 7 to 10-day interval between each application.
Copper deficiency results in slow plant growth, with plants becoming short and compact. Leaves may turn gray-yellow or red-yellow, with white spots appearing. The ears may develop poorly. A foliar spray of 1 kg of copper sulfate or a 0.2% copper sulfate solution can help restore plant health, with treatments applied as needed based on symptom severity.
By recognizing and addressing these trace element deficiencies, farmers can significantly improve crop performance and ensure more productive and sustainable corn cultivation.