The purpose and operation principle of nodes (stalk nodes) on the plant of crop reliably explain to anyone the first-year students of any middle (in America high) agricultural school.
madhumuni na kanuni ya uendeshaji wa nodi (bua nodes) juu ya mazao ya kupanda kuaminika kueleza kwa yeyote wanafunzi mwaka wa kwanza wa katikati yoyote (katika Amerika ya juu) shule ya kilimo.