期刊
JOURNAL OF APPLIED MICROBIOLOGY
卷 129, 期 4, 页码 991-1003出版社
OXFORD UNIV PRESS
DOI: 10.1111/jam.14674
关键词
agriculture; fungi; plant diseases; plant pathology; soil
资金
- Putra Grant (IPS), Universiti Putra Malaysia [UPM/700-2/1/GP-IPS/2017/9577700]
Aims Agro-based wastes were evaluated as a medium for mass micropropagule production and optimal efficacy of Trichoderma asperellum B1092 in controlling Fusarium oxysporum f. sp. lycopersici and promoting tomato growth. This study focused on biological control because pathogen persistence in the soil makes the disease difficult to control. Methods and Results Rice bran, biochar, empty fruit bunches, coconut fibres, compost, top soil and mixed soil were evaluated as media for mass multiplication of T. asperellum, which is effective in controlling plant pathogens. Yielding the most colony forming units (CFU) among the media, coconut fibre was deemed most suitable for promoting sporulation. After 120 days on the medium, T. asperellum B1902 produced 9 center dot 053 x 10(5) CFU per gram coconut fibre; oil palm empty fruit bunches was second highest (7 center dot 406 x 10(5) CFU per gram). In field tests of T. asperellum B1092 against F. oxysporum f. sp lycopersici (causing Fusarium wilt of cherry tomato), B1092 significantly promoted plant growth compared to the control. The efficacy of this formulation resulted in increased growth of roots and shoots tomato plants and total lycopene, sugar, K, N, Ca, P and Mg content after 120 days. Conclusions Trichoderma asperellum B1092 showed great field potential for improving productivity and quality of tomatoes and in controlling Fusarium wilt of cherry tomato. Significance and Impact of the Study This innovative approach using a cheap agro-waste to control the persistent soil-borne Fusarium pathogen of cherry tomato should increase soil survival rate of Trichoderma and has potential for upscaling in the field for other crops.
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