Vol. 12, Issue 8 (2023)

Author(s):
Devanand Kusumbe T, Nagrare IM, Mohini R, Punse and Aakash D Lewade

Abstract:
A field experiment was conducted at Agronomy farm, College of Agriculture, Nagpur during kharif season of 2016-17 on sorghum to study the effect of various integrated Nitrogen doses with biofertilizer inoculation. By considering 80:40:40 kg NPK ha^-1 as recommended dose, the experiment was laid out in total 30 plots with spilt plot design having five integrated nitrogen management treatments as main factor viz., T₁- Control, T₂- 100% RDN through urea, T₃- 75% RDN through urea + 25% RDN through FYM, T₄- 50% RDN through urea + 50% RDN through FYM, T₅- 5 t FYM ha^-1 and two biofertilizer inoculation as sub factor viz., B₁- Azotobacter seed treatment and B₂- Azospirillum seed treatment which was replicated thrice. All the cultural operations were carried out as per recommendation. Treatment T₄ (50% RDN through urea + 50% RDN through FYM) was found significantly superior over all the treatments in respect of growth characters viz., plant height, number of functional leaves, leaf area, leaf area index, dry matter accumulation and also in respect of yield contributing character viz., length of earhead and higher grain yield plant^-1 consequently produced at harvest. In biofertilizer inoculation, treatment B₂ (Azospirillum seed treatment) was found significantly higher at all stages of crop growth in respect of growth characters viz., plant height, number of functional leaves, leaf area, leaf area index and dry matter accumulation over Azotobacter seed treatment and also in respect of yield contributing characters viz., length of earhead, grain yield plant^-1 and consequently produced higher grain yield. The results indicate that the interaction effect was not statistically significant.