Table 3.

Impact of conventional urea, neem-coated urea, and zinc-coated urea on a number of unfilled grains per panicle, grain yield per plant, total biomass per plant, and harvest index of rice plant grown in aerobic and anaerobic regimes.

Treatments	Unfilled grains per panicle			Grain yield per plant (g)
	Aerobic regime	Anaerobic regime	Mean (UF)	Aerobic regimes	Anaerobic regime	Mean (UF)
Control	28	25	26.5 A	11.00	13.00	12.00 C
Urea	25	16	20.5 B	16.00	18.33	17.16 B
Neem coated	18	14	16.0 C	18.33	20.00	19.16 B
Zn coated	14	10	12.0 D	20.33	23.66	22.00 A
Mean (IR)	21.25 A	16.25 B		16.41 B	18.75 A
HSD	IR = 2.405, UF = 2.609, IR × UF = NS			IR = 1.468, UF = 2.813, IR × UF = NS
Treatments	Total biomass per plant (g)			Harvest index (%)
	Aerobic regime	Anaerobic regime	Mean (UF)	Aerobic regimes	Anaerobic regime	Mean (UF)
Control	29.66	31.33	30.50 D	37.08	41.49	39.34 A
Urea	43.00	47.00	45.00 C	37.21	39.0	38.13 B
Neem coated	50.00	55.00	52.50 B	36.66	36.36	36.49 C
Zn coated	60.00	65.00	62.50 A	33.88	36.4	35.2 D
Mean (IR)	45.66 B	49.58 A		36.21 B	37.81 A
HSD	IR = 3.724, UR = 7.136, IR × UF = NS			IR = 1.084, UF = 0.648, IR × UF = NS

IR, irrigation regimes; UF, urea fertilizers; mean values having the same alphabet did not differ significantly at p = 0.05.