BGCSE Field Crop Production 1256 Practice Questions - Botswana BGCSE Field Crop Production (Syllabus 1256) Exam

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What is the primary agronomic benefit of incorporating grain legumes like cowpeas (dinawa) into a crop rotation with cereal crops in Botswana?

Legumes deplete soil moisture to prevent waterlogging Legumes fix atmospheric nitrogen through symbiotic Rhizobium bacteria Legumes act as host plants for cereal stalk borers Legumes increase soil acidity to suppress all weed growth

Correct Answer:

Legumes fix atmospheric nitrogen through symbiotic Rhizobium bacteria

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