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Control of Parthenium (Parthenium hysterophorus) in Grain Sorghum (Sorghum bicolor) in the Smallholder Farming System in Eastern Ethiopia

Published online by Cambridge University Press:  20 January 2017

T. Tamado  and
P. Milberg
T. Tamado
Affiliation:
Department of Plant Science, Alemaya University, P.O. Box 138, Dire Dawa, Ethiopia
P. Milberg
Affiliation:
Department of Biology–IFM, Linköping University, SE-581 83 Linköping, Sweden
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Abstract

Parthenium is a competitive weed spreading in tropical countries. Field experiments were conducted to compare the effect of hand hoeing, growing a smother crop, and applying a herbicide (2,4-D) on parthenium growth and on yield of grain sorghum in smallholder farming systems in eastern Ethiopia. Hand hoeing twice and a smother crop (cowpea) in combination with hand hoeing once consistently suppressed parthenium at the experimental sites. Application of 2,4-D provided inconsistent control of parthenium, possibly because of reemergence from the soil seed bank after control. Growing cowpea as the smother crop suppressed parthenium, but sorghum grain and stalk yields were reduced even when the smother crop was combined with hoeing. Hand hoeing twice, 4 and 8 wk after emergence of sorghum, consistently resulted in better yields than application of 2,4- D and growing smother crop. It is possible that hoeing, apart from controlling the weed, also created better soil conditions for rain water infiltration.

Keywords

2,4-D, (2,4-dichlorophenoxy)acetic acidparthenium, Parthenium hysterophorus L.cowpea, Vigna unguiculata (L.) Walp.grain sorghum, Sorghum bicolor (L.) MoenchHand hoeingsmother cropEthiopia
Type
Research
Information
Weed Technology , Volume 18 , Issue 1 , March 2004 , pp. 100 - 105
Copyright
Copyright © Weed Science Society of America 

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