How to fertilize sweet potatoes well in the late growing stage? Topdressing techniques
How to fertilize sweet potatoes well in the late growing stage? Please guide me on sweet potato fertilization methods. In the late growing stage of sweet potatoes, rational fertilization can prevent premature aging of the plants, maintain the assimilation capacity of the leaves, promote the transport of nutrients to the storage roots, and thereby increase yield. Foliar spraying: after sweet potatoes enter the late growing stage, the absorption capacity of the root system weakens, so...
How to fertilize sweet potatoes well in the late growing stage? Please guide me on sweet potato fertilization methods
In the late growing stage of sweet potatoes, rational fertilization can prevent premature aging of the plants, maintain the assimilation capacity of the leaves, promote the transport of nutrients to the storage roots, and thereby increase yield.
Foliar spraying: after sweet potatoes enter the late growing stage, the absorption capacity of the root system weakens, so foliar spraying can be carried out by category. For hilly slopes, plain sandy land, or fields with weak growth or a tendency toward premature aging, spray a 0.5% urea solution; for fields with excessively vigorous growth and a relatively high fertility level, spray a 0.2% monopotassium phosphate solution or a 2%-3% superphosphate extract; for general fields, spray a mixed solution of 0.4%-0.5% urea and monopotassium phosphate, spraying once every 7-10 days for a total of 2-3 times, with 70-100 kg of fertilizer solution per mu each time; spraying in the evening on a sunny day is preferable.
Fertilizer solution for furrow irrigation: apply a 3%-5% potassium sulfate solution or a 10%-20% plant ash extract along the ridges into the furrows, using 100-150 kg of fertilizer solution per mu. For fields with a tendency toward premature aging, a 2% NPK compound fertilizer solution can be used for topdressing.
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