Effect of nitrogen and potassium on sheath rot incidence and nutrient content in rice

Field experiment was conducted during the late kharif, 2002 to study the effect of nitrogen and potassium on sheath rot incidence and nutrient content in rice. The results revealed that the disease incidence increased with increase in nitrogen level from 0 to 300 kg ha⁻¹ while decreased with increase in potassium level from 0 to 140 kg ha⁻¹. The nitrogen and potassium content in leaf and stem increased with increased doses of nitrogen and potassium. The potassium content in leaf was higher in NLR30491 (2.15 percent) compared to NLR33633 (2.01 percent).