Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/13601
ชื่อเรื่อง: The effects of neem extract and azadirachtin on soil microorganisms
ผู้แต่ง: Sarawaneeyaruk S.
Krajangsang S.
Pringsulaka O.
วันที่เผยแพร่: 2015
บทคัดย่อ: Both neem extract and azadirachtin are widely used in agriculture as organic pesticides because they are nontoxic to humans, animals, and the environment. However, their effects on soil microorganisms and plant growth-promoting rhizobacteria (PGPR), which directly affect soil quality, remain largely unexplored. In this study, the effects of neem extract and azadirachtin on the activity of soil microbes and rhizosphere microorganisms was evaluated. We found that 0.1 and 0.4 gmL-1 of the extract and 1.25 and 2.5 μgmL-1of azadirachtin inhibited the activity of soil microorganisms in vitro. Treating soil with azadirachtin for two months reduced the number of microorganisms present, while two months of treatment with neem extract increased the number of microorganisms in both the soil and the rhizosphere. The phytopathogenic bacterium Pectobacterium carotovorum was more resistant to azadirachtin than Rhizobium sp. Moreover, treatment of mung beans with neem extract or azadirachtin reduced the number of root nodules and Trichoderma asperellum in the rhizosphere, when compared to the control. © 2015, Sociedad Chilena de la Ciencia del Suelo. All rights reserved.
URI: https://ir.swu.ac.th/jspui/handle/123456789/13601
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84954531920&doi=10.4067%2fS0718-95162015005000075&partnerID=40&md5=aaa4ba3304a409e6b12aad868df36d92
ISSN: 7189516
Appears in Collections:Scopus 1983-2021

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