Aplikasi Pupuk N, P, K Dan Zeolit Sintetis Dari Fly Ash Batu Bara Terhadap Pe…

The productivity of upland rice in Riau province is relatively low compared to the national productivity of 3.3 tons.ha-1, because it is generally grown on sub-optimal land, especially Ultisol land. The study aimed to study and obtain the interaction of N, P and K fertilizer with synthetic zeolite on the growth and yield of upland rice (Oryza sativa L.) highest in Ultisol medium. The research w…