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How to prevent and treat corn deficiency in drought conditions
Demand for nitrogen, phosphorus, potassium, and zinc is greater for corn. If it is lacking, it will lead to deficiency of the disease, and the light will grow slowly. In severe cases, the yield will be reduced significantly, and empty grains will be added to affect quality. In case of prolonged drought, the soil moisture is insufficient, and the applied fertilizer is difficult to absorb and use, and the symptoms will obviously increase. Therefore, remedial measures must be taken. The nitrogen deficiency of maize showed: the color was fading, and the thin inner core phosphorus of the plants showed: the base of the stem was purple, and even the leaf sheath and the back of the leaves were purple, and the growth was obstructed; when the potassium was lacking, the tips and edges of the old leaves were yellowed and withered; Leaf whitening or even whitening of the entire plant. Foliar chase can be used to solve this simple and fast method. The specific formula is: 5-7 kg of urea plus 2.5-4 kg of zinc phosphate per hectare before the maize seedling stage to jointing. If the whitening phenomenon is serious, two kilograms of zinc sulfate can be added and sprayed with water. Usually, the growth condition will be significantly improved within 5-10 days. If you need to spray twice, you can spray it with the above formula for 10 days. This method is simple and effective, with quick results, the maximum increase rate of more than two percent. Urea concentration should not be too high when used, should choose the lower temperature of the early morning or evening spray, in order to improve fertilizer efficiency, and avoid burning the leaves.