Vegetos

Abstract

A field experiment was conducted to study the impact of seed invigoration treatments with Mg (NO₃)₂ and KNO₃ in two wheat varieties viz. HUW-234 and HUW-468 under three different dates of sowing i.e. timely (D₁), late (D₂) and very late (D₃). The parameters like plant height (PH), number of tillers, number of leaves, leaf area (LA), dry weight, leaf area index (LAI), crop growth rate (CGR), length of ear head, number of grain per ear and grain yield per plant were highest with nitrate treatment T₁ [Mg (NO₃)₂] whereas relative growth rate (RGR) and net assimilation rate (NAR) were highest with T₂ [KNO₃]. Treatment T₁ recorded minimum days to 50% flowering and maximum days to physiological maturity in comparison to T₀ [control]. The plant raised under D₁ took maximum days to 50% flowering, days to physiological maturity and recorded highest dry weight, pH, number of tillers, number of leaves, LA, LAI, CGR, NAR while lowest duration was recorded in D₃. However, the value of RGR was found highest in D₃ than D₂ and D₁. Among the variety, HUW-234 performed better than the HUW-468 for all the characters. Seed invigoration with nitrate showed an improvement in overcoming the late sown stress in wheat.