“…Microbial agents use (DUBEY et al, 1998), radiation , rice-straw mulch (HIRANO et al, 1993), contaminant nematodes (CHAWLA et al, 1990), and neem products (KUNDU & TRIMOHAN, 1992), have been tested by several authors. Intercropping, weed management, modification of plant density or phenolic and tanin contents modification, are other examples.…”