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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 trace element fertilizers is a crucial technique in modern corn cultivation, helping to improve yield and plant health.
Zinc deficiency typically manifests as chlorosis in young leaves, which appear pale yellow with white seedlings. The middle leaves show distinct green veins, while the older, lower leaves turn gray-brown. To address this, 1.5–2.0 kg of zinc sulfate can be applied to the soil, or a foliar spray of 0.2–0.3% zinc sulfate solution can be used, applied three times at intervals of 5–6 days.
Molybdenum-deficient plants exhibit yellowing between the leaf veins, with curled leaf margins and shriveled grains. A foliar spray of 0.15–0.2% ammonium molybdate solution is recommended for effective correction.
Iron deficiency causes chlorotic spots on young leaves, with green veins forming clear stripes. The stems and leaf sheaths may turn purple-red. In such cases, spraying with a 0.2–0.3% ferrous sulfate solution, applied two to three times every 5–7 days, is advised.
Boron deficiency results in white, non-flowering young leaves that eventually wither and die. Older leaves display white stripes between the veins, and the plant becomes stunted and thin. A foliar spray of 85 g of borax or 60–60 g of boric acid per 100 liters of water, applied three times with a 5–7 day interval, can help restore plant health.
Manganese deficiency often starts with new leaves turning yellow, with green spots appearing between the veins. The leaves become soft, and the roots are slender and white. Spraying with a 0.2% manganese sulfate solution, twice or thrice with a 7–10 day interval, is an effective treatment.
Copper deficiency leads to slow growth, short plants, and the formation of clumps. Leaves turn gray-yellow or red-yellow with white spots, and ear development is poor. Applying 1 kg of copper sulfate or a 0.2% copper sulfate solution as a foliar spray can help alleviate these symptoms.
By carefully monitoring crop conditions and promptly addressing nutrient deficiencies, farmers can significantly enhance corn productivity and overall plant vitality. Proper application of trace element fertilizers not only corrects nutrient imbalances but also promotes stronger, healthier crops.