Abstract:
The chemical, physical, and biological properties of tidal land induce low rice productivity.
Due to that, the nested design research was conducted to acquire the best combinations of fertilizer
doses in increasing rice productivity in January-May 2020 in tidal land B type, Tanah Laut Regency.
The treatments consisted of (A) farmer treatment (200, 150, and 500 kg ha-1
of urea, phonska, and
dolomite, respectively); (B) farmer treatment + liquid biofertilizer (6 liters) ha-1
; both (C) and (D)
treatments applied by 200, 300, 1000, 100, and 100 kg ha-1
of urea, phonska, dolomite, KCl, and SP36, respectively, added by 500 and 250 kg ha-1
of solid biofertilizer, also 6 and 3 liters ha-1
of liquid
biofertilizer, respectively. The M400 variety of rice seeds was transplanted with the Jarwo 4:1 system.
All parameters except the tillers number at 60 DAP and before harvesting were significantly influenced
by the treatment. The D treatment resulted in the highest productivity..
Keywords: organic fertilizer; sub optimal land, M400 variety, wetland
