Spinach Growth and Development Demands Nutrients

Spinach is a green leafy vegetable with fresh green leaves, petiole, and tender stems for people to eat. When spinach is marketed as a commodity, it is in a stage of vegetative growth, and cultivation can take full advantage of the growth and development of the leaf that promotes assimilation of organs, so that a higher yield can be obtained.
It is characterized by sufficient supply of nitrogen, nitrogen deficiency will inhibit the differentiation of the leaves, reduce the number of leaves, yellow leaves, reduce the photosynthetic capacity of the leaves, making it slow growth, plant dwarfism. Generally, for each 1000 kg of spinach produced, it needs to absorb 2.48-5.63 kg of pure nitrogen, 0.86-2.3 kg of phosphorus, and 4.54-5.29 kg of potassium. The ratio of nitrogen, phosphorus and potassium absorption is 2.45-2.88:1:2.3-5.28. Spinach is a fast-growing vegetable that absorbs large amounts of nutrients daily, but its root system is small and distributed in the shallow soil layer. Therefore, the soil needs to maintain sufficient available nutrients, dominated by nitrogen, followed by phosphate fertilizer and Potash. Spinach is a vegetable with high nitrate content. The level of nitrate in vegetable products is related to the type, amount and time of applied nitrogen fertilizer. Therefore, it is advisable to apply nitrogen fertilizer to vegetables early and it should not be too much.

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