Tillage, physical properties of Coto clay and the yields of plantain and sweet potato

Abstract

The only physical property of Coto clay found to be affected by the tillage method was soil resistance, which was greater for the no-till than for the other tillage treatments. The upper 10 cm were the most affected. Tillage methods did not affect plantain yields; thus, minimum tillage can be recommended for this crop.  On the other hand, significantly higher sweet potato yields were obtained when the soil was plowed and disced twice.