Effect of biofertilizer application on rainfed sorghum in calcareous soil Maheshwari P1, Gayathry G2,*, Prabhavathi Jaya S3, Raj Anthoni S4 1SRS Institute of Agriculture and Technology, Vedasandur, Dindigul624710Tamil Nadu, India 2ICAR – Krishi Vigyan Kendra, TNAU, Vriddhachalam, Cuddalore606001Tamil Nadu, India 3Government Arts College, C-Mutlur, Chidambaram, 608102Tamil Nadu, India 4Rom Vijay Bioo Tech Pvt Ltd, Kanniyakoil, 607402, Puducherry (UT), India *Email for correspondence: gayathryg@tnau.ac.in
Online Published on 20 December, 2022. Abstract The influence of biofertilizers like Azospirillum, phosphobacteria, azophos (50:50 combinations of Azospirillum and phosphobacteria) and mycorrhiza, individually and in combination was investigated in pre-monsoon sowing with sorghum APK 1 variety in randomized replicated field trial at the Regional Research Station, Aruppukottai, Virudhunagar, Tamil Nadu. The adherence of the inoculated bacteria was recorded under all treatments. The results showed the feasibility of biofertilizer treatment to seeds in pre-monsoon sowing as the bacterial inoculants survived on seeds up to 21 days even though they were sown in dry soil and colonized until the receipt of showers. Treatment azophos + mycorrhiza with 75 per cent recommended N and P treatment was found most effective in enhancing fresh stover weight (70 tonnes/ha) and grain yield (3,536 kg/ha). This treatment also resulted in higher earhead yield (13.00 kg/plot) alongwith phosphobacteria + mycorrhiza treatment (12.80 kg/plot). Top Keywords Azospirillum, Phosphobacteria, VAM, Sorghum, Black soil. Top |