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Establishing Alfalfa on Dodder-Infested Soil

Published online by Cambridge University Press:  12 June 2017

J. H. Dawson
J. H. Dawson*
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Irrigated Agriculture Research and Extension Center, Prosser, Washington
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Abstract

Alfalfa (Medicago sativa L.) was killed or severely injured by parasitism from dodder (Cuscuta campestris Yunck. and C. indecora Choisy) when seeded August 1 or earlier in soil containing dodder seed. Alfalfa seeded August 15 or September 2 escaped injury from dodder, and became well-established before winter. Isopropyl m-chlorocarbanilate (chlorpropham) applied at 6 lb/A the following April controlled dodder effectively and did not injure alfalfa. A preemergence application of dimethyl tetrachloroterephthalate (DCPA) at 10 lb/A, followed by sprinkler irrigation, controlled 98 to 100% of the dodder at each of six dates of seeding in each of 2 years. DCPA often injured alfalfa seedlings severely, but most of them recovered and grew satisfactorily.

Type
Research Article
Information
Weed Science , Volume 19 , Issue 3 , May 1971 , pp. 222 - 225
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

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