How to apply nitrogen fertilizer to soybeans

There are two key stages in the application of nitrogen to soybeans: the “seedling stage” is a critical period for the requirement of nitrogen, and the quantity required is small, but it is critical that applying a small amount of nitrogen fertilizer at the time of sowing can promote seedling growth. Especially in plots with special nitrogen deficiency, early application of nitrogen fertilizer can promote seedling growth and root development. Carbohydrates in the shoots are transported to the roots, which can induce nodules nitrogen fixation. In the seedling stage, diammonium phosphate is used as a seed fertilizer, or compound fertilizer strips containing low-nitrogen phosphorus, potassium are applied. It is advisable to apply a depth of 2 to 3 inches below the seed. The preferred varieties of soybean nitrogen fertilizer include ammonium nitrate, ammonium sulfate and potassium nitrate. From the "flower" to the "fruit period", it is also a critical period for the large amount of nitrogen in soybeans. The lack of nitrogen will not only affect the yield but also affect the quality and will reduce the content of amino acids. In this period, nitrogen fertilizer and a small amount of urea can be applied.

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