A new mycofungicide Emericella nidulans against tomato wilt caused by Fusarium oxysporum f sp lycopersici in vivo.

Abstract

As a result, powder and oil formulations of E. nidulans gave highly significant at P=0.01 to control Fusarium wilt of tomato caused by F. oxysporum f.sp. lycopersici at 50 days after inoculated tomato seedlings with pathogen, the disease index were 1.75 and 2.00 where the wilt disease was decreased 63 % and 57 %, respectively. The followed effective treatments were treated with filtrate of E. nidulans and Procoraz (disease index were 2.5 and 3.5), the wilt disease was decreased 47% and 36 %, respectively when compared to the treatments of nontreated control (disease index was 1.00) and inoculated with pathogen. It is indicated that applying oil formulation of E. nidulans at the rate of 10 ml/20 L of water gave the best control tomato wilt caused by F. oxysporum f.sp. lycopersici. The disease was less and tomato plant grew better than the other treatments. Tomato treated with oil form of E. nidulans gave significantly highest in term of plant height than tomato treated with powder form of E. nidulans, filtrate of E. nidulans and procoraz chemical fungicide which non-significantly different when compared to the non-treated with pathogen (control) Fusarium wilt of tomato. In this study, the power or oil formulation of E. nidulans have been made from spores including antagonistic substances or using only filtrate of E. nidulans gave effective control of tomato wilt. It is also noted that tomatoes treated with oil or powder forms of E. nidulans gave the highest root weight and followed by treated with filtrate of E. nidulans, procoraz and nontreated tomato with pathogen (12.50 g). It revealed that tomato treated with oil or powder forms of E. nidulans gave significantly highest total fruit weight per plant which were 582 and 533 g/plant and followed by tomatoes treated with filtrate of E. nidulans