Feteleza Wapawiri (NPK)
Zamgululi
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Feteleza wa NPK
Ubwino wa fetereza wapakhungu ndikuti umakhala ndi michere yambiri, wokhala ndi zinthu zambiri, ndipo umakhala ndi zinthu ziwiri kapena zingapo zopatsa thanzi, zomwe zimatha kupereka michere yambiri yomwe mbewu zimafunikira moyenera komanso kwa nthawi yayitali. Sinthani zotsatira za umuna. Katundu wabwino, wosavuta kugwiritsa ntchito: Kukula kwa tinthu tating'onoting'ono ta feteleza nthawi zambiri kumakhala kofanana komanso kosakanikirana pang'ono, komwe kuli kosavuta kusungira ndikugwiritsa ntchito, ndipo kuli koyenera kupanga umuna. Pali zigawo zochepa zothandizira ndipo sizikhala ndi zovuta panthaka.
