Poorly ventilated transport system

Tubers which are immature, large, damaged by hail, exposed to late blight or dry rot are more prone to soft rot. Nitrogen fertilization and particularly ammonium chloride application to the crop makes the tubers more prone to soft rot. In fact high nitrogen doses delay the crop maturity while chloride ions increase the water content and decrease tuber dry matter leading to an increase in soft rot incidence.

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