Kidney beans need fertilizer points
Nitrate-like nitrate-nitrogen fertilizer, nitrogen supply is not as good as possible, appropriate nitrogen is conducive to increase production and improve quality, excessive application will result in falling and delayed maturation, affecting cowpea production and efficiency.
Phosphorus plays an important role in the formation of Rhizobium leguminosa and flowering and scarring. Phosphorus deficiency makes the cowpea plants and rhizobia growth and development poor, the number of flowering and scarring is reduced, the number of foliar kernels is small, and the yield is reduced.
Potassium can significantly affect the growth and development of cowpea and the formation of yield. Insufficient supply of potassium fertilizer will reduce cowpea production by more than 20%. In production, the amount of nitrogen fertilizer is more appropriate, and even if the amount of potassium is less, generally it will not show the symptoms of potassium deficiency.
Kidney beans are prone to magnesium deficiency. If the content of magnesium in the soil is insufficient, from the first month after sowing, the first leaf is firstly started, then the chlorosis begins to yellow among the veins of the first true leaf, and then gradually develops to the upper leaf, which lasts for about 7 days. It began to fall off and the yield decreased.
The trace element molybdenum is an important component of nitrogenase and nitrate reductase. It is mainly involved in biological nitrogen fixation in physiological metabolism, and promotes the metabolism of nitrogen and phosphorus nutrients in cowpea plants.
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