Abstract

Chitosan and menadione sodium bisulphite (MSB) were applied as agar amendment and seed coating to test the combined effects of them on Fusarium oxysporum f.sp. lycopersicii (FOL) in vitro growth and disease development of tomato plant seeds. In agar amendment, chitosan combined with MSB (chitosan 1.0 mg.mL-1+ MSB 0.1 mg.mL-1) was found to significantly inhibit FOL growth. Only chitosan as agar amendment and seed coating was effective, it diminishing disease occurrence in emerging roots from tomato seeds.