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Control of Purple Nutsedge by Bensulide

Published online by Cambridge University Press:  12 June 2017

W. Powell Anderson  and
Max P. Dunford
W. Powell Anderson
Affiliation:
New Mexico State University, Las Cruces, New Mexico
Max P. Dunford
Affiliation:
New Mexico State University, Las Cruces, New Mexico
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Abstract

Soil incorporated into the tuber zone of purple nutsedge (Cyperus rotundus L.) at 1 to 9 kg/ha, O,O-diisopropyl phosphorodithioate S-ester with N-(2-mercaptoethyl)benzenesulfonamide (bensulide) inhibited the growth of roots on plants developing from these tubers. The inhibitory effect was temporary and occurred only when bensulide was in intimate contact with the tubers and developing plants. When tubers were removed from bensulide-treated soil, washed, and replanted in untreated soil, root growth was normal. The production of shoots from tubers planted in bensulide-treated soil apparently was not affected, but shoot-growth was retarded when root growth was suppressed. When bensulide was incorporated into the upper 5-cm layer of soil, the shoots of nutsedge plants developing from tubers located below this layer grew through the treated soil with no adverse effect; the roots of these plants developed from basal bulbs below the layer of treated soil and were normal. Leaching bensulide-treated soil with 37.6 hectare-cm of water did not move enough bensulide into the soil to cause inhibitory growth effects on purple nutsedge.

Type
Research Article
Information
Weed Science , Volume 18 , Issue 3 , May 1970 , pp. 338 - 340
Copyright
Copyright © 1970 Weed Science Society of America 

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References

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