Treat seed with talc formulation of Trichoderma viride at 4 g/kg or Pseudomonas fluorescens at 10 g/kg, then with one packet (200 g/ha) each of Rhizobium and phosphobacteria using rice kanji as binder; shade-dry for 15 minutes before sowing. If fungicide is used instead, leave at least 24 hours before the biofertilizer treatment.
Pending expert review
Source
Crop Production Guide – Agriculture 2020 (Directorate of Agriculture, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Cowpea – Seed treatment & biofertilizer, p. 154
