Selective post-emergence chemical control of Solanum nigrum L. and other broadleaved weeds in direct seeded processing tomatoes

Selective post-emergence chemical control of Solanum nigrum L. and other broadleaved weeds in direct seeded processing tomatoes

1991

A:PS

Field experiments determined the effectiveness of post-em. application of pentanochlor and acifluorfen in controlling S. nigrum in direct-sown processing tomatoes. Tomatoes tolerated both herbicides even at the one true-leaf stage with pentanochlor and at two-true leaves with acifluorfen. Acifluorfen tolerance depended on rate, lower rates being least phytotoxic. Pentanochlor controlled S. nigrum from the cotyledon stage allowing considerable flexibility in application timing. Rates of 10-15 litres/ha gave greater control than 5 litres. Acifluorfen at rates down to 0.5 litres controlled S. nigrum up to the 2-leaf stage. Both chemicals controlled different spectra of broadleaved weeds.

v.66(6):737-746, JOURNAL OF HORTICULTURAL SCIENCE

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