Ummbila udinga ukuncela izakhi zomzimba ezahlukahlukene ngesikhathi sokukhula kanye nenqubo yokuthuthuka, hhayi kuphela izakhi ezinkulu ze-nitrogen, i-phosphorus ne-potassium, kepha nezinto zokulandela ngomkhondo ezifana ne-calcium, i-magnesium, isulfure, ithusi, i-iron, i-zinc, i-manganese, i-boron, kanye ne-molybdenum. Isidingo sokulandela umkhondo ...
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