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Urea
Lemandou urea wokhala ndi nayitrogeni 46%, ndi mankhwala olimba a nayitrogeni. Manyowa a Urea amagwiritsidwa ntchito kwambiri muulimi. Ndiwo mtundu wofala kwambiri wa feteleza wa nayitrogeni womwe umagwiritsidwa ntchito padziko lonse lapansi. Amaonedwa kuti ndi gwero lazachuma la nayitrogeni. Wopangidwa kuchokera ku ammonia ndi kaboni dayokisaidi, uli ndi nayitrogeni wambiri kuposa feteleza wolimba wa nayitrogeni. Monga chogwirira ntchito, urea itha kugwiritsidwa ntchito mwachindunji m'nthaka pogwiritsa ntchito zida zofalikira. Kuphatikiza pa kugwiritsa ntchito nthaka, feteleza wa urea atha kugwiritsidwanso ntchito pakupanga feteleza kapena ngati foliar application. Komabe, feteleza wa urea sayenera kugwiritsidwa ntchito munthawi yocheperako, chifukwa urea imatuluka mchidebe nthawi yomweyo.
