Metam-sodium kills beneficial soil fungi as well as cotton pests

Beneficial mycorrhizal fungi can be adversely affected by metam-sodium (a general biocide often used for weed control in cotton). Added fertilizers needed to offset the mycorrhizal loss may cost more than the gains realized from control of disease-causing fungi. Experiments at three sites in the San...

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Published inCalifornia agriculture (Berkeley, Calif.) Vol. 50; no. 5; pp. 42 - 44
Main Authors Davis, R.M, Nunez, J.J, Vargas, R.N, Weir, B.L, Wright, S.D, Munier, D.J
Format Journal Article
LanguageEnglish
Published University of California Agriculture and Natural Resources 01.09.1996
Subjects
agrochemicals
fungal diseases of plants
pesticides
plant health
plant pathogenic fungi
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Summary:Beneficial mycorrhizal fungi can be adversely affected by metam-sodium (a general biocide often used for weed control in cotton). Added fertilizers needed to offset the mycorrhizal loss may cost more than the gains realized from control of disease-causing fungi. Experiments at three sites in the San Joaquin Valley, CA, showed that metam-sodium soil treatment provided good weed control but reduced cotton plant height and vigor. Yields in some treated plots were reduced, and mycorrhizal presence in roots was reduced significantly in some plots. The positive and negative effects of metam-sodium use need to be weighed.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0008-0845
2160-8091
DOI:10.3733/ca.v050n05p42