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Table 2 Physical grain quality parameters evaluated using different days of paddy harvest from 50% flowering and potassium fertilizer rates applied at the time of heading

From: Increased rate of potassium fertilizer at the time of heading enhances the quality of direct seeded rice

Grain parameters Harvesting age in days after 50% flowering (DAFF days)d Rate of MOP applied at the time of heading (kg/ha)
25 30 35 40 12.5 25 37.5
Length (mm) 6.83 ± 0.04a 7.23 ± 0.05b 7.30 ± 0.06b 7.25 ± 0.05b 7.10 ± 0.02a 7.10 ± 0.01a 7.23 ± 0.02b
Breadth (mm) 1.54 ± 0.02a 1.73 ± 0.04b 1.73 ± 0.03b 1.74 ± 0.04b 1.65 ± 0.01a 1.70 ± 0.01b 1.75 ± 0.01c
L/B 4.43 ± 0.03b 4.18 ± 0.05a 4.22 ± 0.05a 4.16 ± 0.04a 4.30 ± 0.01a 4.18 ± 0.02b 4.13 ± 0.02b
BD (g/cm3) 0.62 ± 0.01a 0.68 ± 0.01b 0.70 ± 0.02b 0.70 ± 0.01b 0.64 ± 0.01a 0.70 ± 0.01b 0.70 ± 0.01b
  1. MOP muriate of potash (potassium fertilizer; 60% K2O), L/B length to breadth ratio of the grain, BD bulk density of the rice grains
  2. Mean (± SE) followed by the same superscript within a raw is not significantly different (P > 0.05) as measured by the DNMRT
  3. d Data presented as mean ± SE