Effect of soil fertility on host response to black leaf streak of plantain (Musa spp., AAB group) under traditional farming systems in southeastern Nigeria

摘要: Abstract Plantain (Musa spp., AAB group) is a staple food crop in the humid forest regions of West and Central Africa. Its cultivation threatened by black leaf streak (BLS), an air‐borne fungal spot disease, caused Mycosphaerella fijiensis Morelet. An on‐farm survey for BLS severity relation to soil fertility was conducted two different geomorphological zones, main plantain‐growing areas Rivers State where plantain mostly cultivated compound gardens outlying fields mixed with other crops. Meander belts zone (the Niger Delta area) less infected than Coastal plain sands east delta). In addition, grown homestead had much lower that planted field‐plots. The host plant response attributable difference both between zones farming systems. Therefore, success system would depend on managing ...