Effect of N P and K fertilizers on rice yields at several regions in Indonesia

The highest weight of harvested dry grain and milled dry grain weight was achieved with 180 kg N ha-1 dose, while the highest dry straw weight was 135 kg N ha-1.Meanwhile, in Pandeglang, West Java Province, the tallest rice crop was achieved with 180 kg N ha-1 dose.

Fertilization significantly augmented rice yields obtained from fields in Pandeglang, while the supply of P and K alone without N did not trigger any increase. The application of a 90 kg N ha-1 dose significantly increased rice yield compared to the control.In Sukadana, Lampung Province, N, P, and K fertilization significantly increased yields in rice fields, but providing P and K only to the plants without N addition did not lead to yield elevation in harvested dry weight, milled dry weight, and dry straw weight.