Malawi: SC 657 Mkango is a medium-maturing maize hybrid that reaches maturity in approximately 128 days. It produces white, hard-dent grain and yields about 10 tonnes per hectare, equivalent to approximately 200 × 50 kg bags. It has tolerance to GLS, NCLB and Turcicum Blight. Uses include summer grain, cattle stover and silage. It is matched to Zones 3, 4 and 5.
Zambia: SC 657 is a medium-maturing white maize variety with a maturity period of approximately 130-136 days. It produces white, hard-dent grain and has a yield potential of 12-13 tonnes per hectare, equivalent to approximately 240-260 × 50 kg bags. Its disease-tolerance profile includes Grey Leaf Spot, Leaf Spot and Northern Corn/Turcicum Blight, while its cob-rot profile is described as good tolerance to Diplodia. SC 657 has moderate drought tolerance and very good standability. It is suitable for summer grain, cattle stover and silage.
Kenya: SC 657 (Simba 657) is listed for Kenya as a mid / transition maize variety. The source gives 145-152 days to maturity, 40-48 yield per acre, white grain, drought tolerant: No, zone adaptation 4-5, and adaptation/attribute: Mid.
DRC: SC 657: A medium maturing variety (130-136 days) with white, semi flint grain and a potential yield of 14 tonnes per hectare. The brochure reports good tolerance to grey leaf spot and northern corn leaf blight, and very good tolerance to Diplodia ear rot. Its drought tolerance is rated moderate and its standability very good. It is listed for rainy season grain and livestock fodder in Zones 1-8.
Zimbabwe: SC 657 – Medium-Maturing Maize Hybrid: SC 657 is a medium-maturing maize hybrid that reaches physiological maturity in approximately 138-145 days, depending on altitude. It has demonstrated a high yield potential of up to 16.1 tonnes per hectare. Its key distinguishing traits are a stay-green characteristic and good heat and drought tolerance, making it suited to environments where moisture and heat stress can affect crop performance.