Biocontrol agents for the management of disease complex involving root-knot nematode, Meloidogyne incognita and Fusarium moniliforme on grapevine (Vitis vinifera)

Field trials were conducted for the management of disease complex involving Meloidogyne incognita and Fusarium moniliforme, on grapevine cv. Muscat Hamburg. The vines were treated with commercial foumulations of biocontrol agents viz., Pseudomonas fluorescens (100 @vine) and Trichoderma viride (100 g/vine) alone and in combination at half dosage, along with farmyard manure (20 kg/vine) and carbofuran 3G (60 glvine). All the treatments significantly reduced the final soil nematode populaiton and wilt disease incidence. The highest reduction in final soil nematode population (S6.9%), least root gall index (1.8) and least wilt disease incidence (24.8%) were observed in FYM (20 kg) + P. Jluorescens (100 @vine) treated vines. The bunch weight of grapevine increased by 155.4% in FYM (20 kg) + P. fluorescens (100 g/vine) treated vines compared to untreated control.