Trichoderma and Bacillus as Combined Biocontrol Agent of Moler Disease on Shallots

DOI

10.2991/absr.k.210609.016How to use a DOI?

Keywords

Shallot, Trichoderma, Bacillus, Fusarium

Abstract

Moler disease of shallot (MDS) or basal plate rot caused by Fusarium oxysporum f.sp. capae (Foce) is an important disease on shallot. In low land such Brebes Central Java where is one of the center production of shallots in Indonesia, the disease is the most important and harmful. The specific symptom of the disease is a twisting leaf so the farmers call it as “Moler” meaning twisting. In the fields, the disease intensity can reach over 70%. So far the disease is still difficult to control. The control development of MDS is important to do. It is understood well that biological control of disease is promising for the future of plant production. The effectiveness consistence however is one of problem in single application of biological control agent. The problem is caused by varies environmental condition in the fields that are not always favourable to biocontrol agents. To minimize the risk of failure to control, it is necessary to use the controlling agent in an integrated or combination manner. Trichoderma and Bacillus were two biocontrol agents having been studied to control plant diseases showing effective to reduce disease intensity of MDS. The research aimed to study the effectiveness of Trichoderma and Bacillus to control MDS in a combination manner. The works in vitro were conducted in laboratory of Plant Pests and Diseases, whereas the works in vivo were arranged by completely randomized design (CRD) with 360 plant samples. The data were analyzed by Duncan’s test. The results showed that the application of Trichoderma and Bacillus in vitro had a significant effect on decreasing the growth of pathogenic Fusarium and both microorganisms were antagonistic each other. In vivo however, the antagonism was not significant. The effectiveness of Trichoderma sp. and Bacillus sp. to control MDS singly in vivo reached up to 34.42% and 24.76% respectively. The implication is that the couple biological control agent is possible to apply in combination manner to minimize the risk of failure in single manner application.

Copyright

© 2021, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Susilo H. Poromarto
AU  - Supyani
AU  - Supriyadi
AU  - SA. Indriani
AU  - Hadiwiyono
PY  - 2021
DA  - 2021/06/11
TI  - Trichoderma and Bacillus as Combined Biocontrol Agent of Moler Disease on Shallots
BT  - Proceedings of the International Seminar on Promoting Local Resources for Sustainable Agriculture and Development (ISPLRSAD 2020)
PB  - Atlantis Press
SP  - 92
EP  - 95
SN  - 2468-5747
UR  - https://doi.org/10.2991/absr.k.210609.016
DO  - 10.2991/absr.k.210609.016
ID  - Poromarto2021
ER  -