PENGARUH DOSIS PUPUK N, P DAN K TERHADAP HASIL TANAMAN PADI

Gembong Haryono

Abstract


An  experiment to study the effect of N,  P  and K fertilizer   dose on rice (Oryza Sativa, L) variety IR 64, had been done since Juni 16'h until September, 2003 in Ambartawang village, Mungkid district, Magelang regency. The altitude in 250m, soil kind is entisol and pH is 6,51. The method of experiment was factorial (3 x L x 2) by randomized completely block design  and three replications. The first factor is N fertilizer dose (115 ; /38 and 160 kg N/ Ha), second factor  is P fertilizer  dose (7,2 and 2/,6 kg P 20s/Ha) and third factor is P fertilizer  dose (60 and 120 kg K20/Ha). The result shows that the increase of N fertilizer dose on application of P fertilizer is able to increase: weight of dry rice grains of harvest per hill, yield per square meter and weight of 1000 dry mills of rice grains. Increasing of N-fertilizer dose on application  of  K  fertilizer is able  to increases : weight of dry rice grains of harvest per hill, yield per  square meter and weight of 1000 dry mills of rice grains. The difference of P fertilizer dose on application of K fertilizer give the best on yield per square meter ·and weight of 1000 dry mills of rice grains. The best yield of rice is obtained at.l39,86 kg N, 7,2 kg P2O5 and 120 kg K20/ha fertilizer  dose.

 

Key ·words : N, P and K fertilizer and rice (Oryza Sativa L) variety IR 64.


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