PENAMBAHAN NITROGEN PADA PUPUK ORGANIK CAIR UNTUK PADI RATOON (Oryza sativa L.)

The experiment of addition of N on Liquid Organic Fertilizer (LOF) for ratoon rice crop has been done
In Padang City, September 2017 to January 2018. The aimed was to obtain an appropriate combination
of nitrogen administration to LOF to ratoon rice crop. The experiment was arranged in a split plot, the
main plot being a pruning consisting of 2 levels ie; not pruned and pruned. The subplot of fertilizer
foliar consists of 4 types namely; 0 (F1); 800 mg L-1 Urea (F2); 25 ml L-1 + Urea (F3); 50 ml L-1 POC
+ Urea (F4), 3 replications. Data were analyzed statistically by using ANOVA α 5%, if treatment had real effect done with BNT test α 5%. Parameters include; weight of crop forage, plant height, percentage of productive tillers, flowering age and harvest, straw and paddy production per hectare. The results was that administering 800 mg L-1 of single N fertilizer from Urea or adding it to LOF was not favorable for growth and yield of ratoon rice. Pruning did not reduce grain yield reaching 5.37 t ha-1, and earn farming can still be offset by the existence of HPT of 3.63 t ha-1.