engleski

Effect of reduced soil tillage on ferralsol rhodic on maize (Zea mays L.) grain yield in the Horro Alleltu area, Ethiopia

The subtropical area of Horro Alleltu, Nekemte, the Wollega province, Ethiopia, with predominantly ferralithic (ferralsol) rhodic soils of a very good composition, favourable internal and external drainage, a large amount of precipitations and favourable temperatures, makes it possible instead of conventional tillage to apply some of the alternative soil tillage treatments in maize production, such as: subsoiling, deep (10-15 cm) and shallow (5-10 cm) discharowing, and even sowing without the basic soil tillage. This is primarily possible for agricultural reasons. With regard to the yield, sowing without basic soil tillage, including zero tillage treatments deserves special attention as a measure against the water erosion, which is of a particular importance in the region of Horro Alleltu. The best results of fertilization were obtained with higher levels of applied fertilizers. Soil tillage (hoeing and ridging) during the vegetation period did not show any yield advantages over the possibility to omit these tillage operations.

maize; soil tillage; ploughing; disc harrowing; subsoiling; zero tillage; fertilization

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