Figure 1

Annual change in organic carbon (A), available N (B), available P (C), and available K (D) as affected by bio-priming and mineral fertilization. Error bars indicate mean ± SE (n = 3). Treatments: T1: Absolute control N:P2O5:K2O @ 0:0:0 kg ha−1; T2: RDF of N:P2O5:K2O @ 120:60:60 kg ha−1; T3: 75% RDF + Trichoderma harzianum; T4: 75% RDF + Pseudomonas fluorescens; T5: 75% RDF + Bacillus subtilis; T6: 75% RDF + T. harzianum + P. fluorescens; T7: 75% RDF + P. fluorescens + B. subtilis; T8: 75% RDF + T. harzianum + B. subtilis; T9: 75% RDF + T. harzianum + P. fluorescens + B. subtilis.