Yield and nitrogen uptake in wheat grown after different kharif crops

An experiment was conducted for two consecutive years during 1992–1994 to study the effect and uptake of graded levels of nitrogen (0, 40, 80 and 120 kg N ha⁻¹). In wheat cultivated in sequence with seven different Kharif crops viz. rice, maize, sesamum, groundnut, sorghum (fodder), dhaincha (GM), blackgram including fallow (control). Wheat after dhaincha and groundnut recorded higher N-concentration and uptake closely followed by fallow (control) and groundnut. Wheat followed by cereals (rice, maize and sorghum) and 0il seed (sesamum) exhibited lower values of these traits. Increase in N-Ievels upto 120 kg N ha⁻¹) also depicted gradual increase both in N-concentration and N-uptake. The highest wheat yield of 47.07 and 46.06q ha⁻¹ were realised in dhaincha (G.M.) wheat sequence at 80 kg N ha⁻¹.