Effect of Pre-emergence Herbicides on Weeds, Nodulation and Yield of Cowpea [<i>Vigna unguiculata</i> (L.) WALP.] at Haik and Mersa in Wollo, Northern Ethiopia

Getachew Mekonnen; Mekdes Dessie

doi:doi:10.11648/j.ijaas.20160206.14

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Effect of Pre-emergence Herbicides on Weeds, Nodulation and Yield of Cowpea [Vigna unguiculata (L.) WALP.] at Haik and Mersa in Wollo, Northern Ethiopia

Getachew Mekonnen, Mekdes Dessie

Published in International Journal of Applied Agricultural Sciences (Volume 2, Issue 6)

Received: 8 July 2016 Accepted: 11 November 2016 Published: 21 December 2016

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Abstract

The experiment was conducted at Mersa and Haik, northern Ethiopia during the 2014 main cropping season to assess the effect of pre-emergence s-metolachlor and pendimethalin on nodulation, and yield of cowpea. There were 12 treatments comprising: s-metolachlor (1.0, 1.5 and 2.0 kg ha^-1); pendimethalin (1.0, 1.3 and 1.6 kg ha^-1), s-metolachlor at 1.0 kg ha^-1 + hand weeding at 5 weeks after crop emergence (WAE), pendimethalin at 1.0 kg ha^-1 + hand weeding at 5 WAE, one hand weeding at 2 WAE, two hand weeding at 2 and 5 WAE, weed free and weedy checks. The treatments were arranged in randomized complete block design with three replications. The minimum weed dry weight was registered with the application 2.0 kg ha^-1 of s-metolachlor at both locations; however, at 55 DAE and at harvest, weeds accumulated significantly lower dry weight due to s-metolachlor 1.0 kg ha^-1 and pendimethalin 1.0 kg ha^-1 each pendimethalin superimposed with hand weeding at both locations. The interaction of location with weed management practices was significant on number and dry weight of nodules, number of pods plant^-1, grain and aboveground dry biomass yield and yield loss. The maximum grain yield (4277 kg ha^-1) was obtained in complete weed free treatment at Mersa which was statistically in parity with complete weed free and two hand weeding treatments at Haik and Mersa, respectively. Due to weed infestation throughout the crop growth, the highest yield loss (70.8%) was recorded at Haik while it was 47.5% at Mersa.

Published in	International Journal of Applied Agricultural Sciences (Volume 2, Issue 6)
DOI	10.11648/j.ijaas.20160206.14
Page(s)	99-111
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2016. Published by Science Publishing Group

Keywords

Hand-Weeding, Pendimethalin, S-metolachlor, Weed- Free, Yield Loss

References

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Getachew Mekonnen, Mekdes Dessie. (2016). Effect of Pre-emergence Herbicides on Weeds, Nodulation and Yield of Cowpea [Vigna unguiculata (L.) WALP.] at Haik and Mersa in Wollo, Northern Ethiopia. International Journal of Applied Agricultural Sciences, 2(6), 99-111. https://doi.org/10.11648/j.ijaas.20160206.14

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Getachew Mekonnen; Mekdes Dessie. Effect of Pre-emergence Herbicides on Weeds, Nodulation and Yield of Cowpea [Vigna unguiculata (L.) WALP.] at Haik and Mersa in Wollo, Northern Ethiopia. Int. J. Appl. Agric. Sci. 2016, 2(6), 99-111. doi: 10.11648/j.ijaas.20160206.14

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Getachew Mekonnen, Mekdes Dessie. Effect of Pre-emergence Herbicides on Weeds, Nodulation and Yield of Cowpea [Vigna unguiculata (L.) WALP.] at Haik and Mersa in Wollo, Northern Ethiopia. Int J Appl Agric Sci. 2016;2(6):99-111. doi: 10.11648/j.ijaas.20160206.14

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@article{10.11648/j.ijaas.20160206.14,
  author = {Getachew Mekonnen and Mekdes Dessie},
  title = {Effect of Pre-emergence Herbicides on Weeds, Nodulation and Yield of Cowpea [Vigna unguiculata (L.) WALP.] at Haik and Mersa in Wollo, Northern Ethiopia},
  journal = {International Journal of Applied Agricultural Sciences},
  volume = {2},
  number = {6},
  pages = {99-111},
  doi = {10.11648/j.ijaas.20160206.14},
  url = {https://doi.org/10.11648/j.ijaas.20160206.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijaas.20160206.14},
  abstract = {The experiment was conducted at Mersa and Haik, northern Ethiopia during the 2014 main cropping season to assess the effect of pre-emergence s-metolachlor and pendimethalin on nodulation, and yield of cowpea. There were 12 treatments comprising: s-metolachlor (1.0, 1.5 and 2.0 kg ha-1); pendimethalin (1.0, 1.3 and 1.6 kg ha-1), s-metolachlor at 1.0 kg ha-1 + hand weeding at 5 weeks after crop emergence (WAE), pendimethalin at 1.0 kg ha-1 + hand weeding at 5 WAE, one hand weeding at 2 WAE, two hand weeding at 2 and 5 WAE, weed free and weedy checks. The treatments were arranged in randomized complete block design with three replications. The minimum weed dry weight was registered with the application 2.0 kg ha-1 of s-metolachlor at both locations; however, at 55 DAE and at harvest, weeds accumulated significantly lower dry weight due to s-metolachlor 1.0 kg ha-1 and pendimethalin 1.0 kg ha-1 each pendimethalin superimposed with hand weeding at both locations. The interaction of location with weed management practices was significant on number and dry weight of nodules, number of pods plant-1, grain and aboveground dry biomass yield and yield loss. The maximum grain yield (4277 kg ha-1) was obtained in complete weed free treatment at Mersa which was statistically in parity with complete weed free and two hand weeding treatments at Haik and Mersa, respectively. Due to weed infestation throughout the crop growth, the highest yield loss (70.8%) was recorded at Haik while it was 47.5% at Mersa.},
 year = {2016}
}

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TY  - JOUR
T1  - Effect of Pre-emergence Herbicides on Weeds, Nodulation and Yield of Cowpea [Vigna unguiculata (L.) WALP.] at Haik and Mersa in Wollo, Northern Ethiopia
AU  - Getachew Mekonnen
AU  - Mekdes Dessie
Y1  - 2016/12/21
PY  - 2016
N1  - https://doi.org/10.11648/j.ijaas.20160206.14
DO  - 10.11648/j.ijaas.20160206.14
T2  - International Journal of Applied Agricultural Sciences
JF  - International Journal of Applied Agricultural Sciences
JO  - International Journal of Applied Agricultural Sciences
SP  - 99
EP  - 111
PB  - Science Publishing Group
SN  - 2469-7885
UR  - https://doi.org/10.11648/j.ijaas.20160206.14
AB  - The experiment was conducted at Mersa and Haik, northern Ethiopia during the 2014 main cropping season to assess the effect of pre-emergence s-metolachlor and pendimethalin on nodulation, and yield of cowpea. There were 12 treatments comprising: s-metolachlor (1.0, 1.5 and 2.0 kg ha-1); pendimethalin (1.0, 1.3 and 1.6 kg ha-1), s-metolachlor at 1.0 kg ha-1 + hand weeding at 5 weeks after crop emergence (WAE), pendimethalin at 1.0 kg ha-1 + hand weeding at 5 WAE, one hand weeding at 2 WAE, two hand weeding at 2 and 5 WAE, weed free and weedy checks. The treatments were arranged in randomized complete block design with three replications. The minimum weed dry weight was registered with the application 2.0 kg ha-1 of s-metolachlor at both locations; however, at 55 DAE and at harvest, weeds accumulated significantly lower dry weight due to s-metolachlor 1.0 kg ha-1 and pendimethalin 1.0 kg ha-1 each pendimethalin superimposed with hand weeding at both locations. The interaction of location with weed management practices was significant on number and dry weight of nodules, number of pods plant-1, grain and aboveground dry biomass yield and yield loss. The maximum grain yield (4277 kg ha-1) was obtained in complete weed free treatment at Mersa which was statistically in parity with complete weed free and two hand weeding treatments at Haik and Mersa, respectively. Due to weed infestation throughout the crop growth, the highest yield loss (70.8%) was recorded at Haik while it was 47.5% at Mersa.
VL  - 2
IS  - 6
ER  -

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Author Information

Getachew Mekonnen

College of Agriculture and Natural Resources, Mizan Tepi University, Mizan Teferi, Ethiopia
Mekdes Dessie

Colleges of Agriculture, Wolkite University, Wolkit, Ethiopia

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Getachew Mekonnen, Mekdes Dessie. (2016). Effect of Pre-emergence Herbicides on Weeds, Nodulation and Yield of Cowpea [Vigna unguiculata (L.) WALP.] at Haik and Mersa in Wollo, Northern Ethiopia. International Journal of Applied Agricultural Sciences, 2(6), 99-111. https://doi.org/10.11648/j.ijaas.20160206.14

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Getachew Mekonnen; Mekdes Dessie. Effect of Pre-emergence Herbicides on Weeds, Nodulation and Yield of Cowpea [Vigna unguiculata (L.) WALP.] at Haik and Mersa in Wollo, Northern Ethiopia. Int. J. Appl. Agric. Sci. 2016, 2(6), 99-111. doi: 10.11648/j.ijaas.20160206.14

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AMA Style

Getachew Mekonnen, Mekdes Dessie. Effect of Pre-emergence Herbicides on Weeds, Nodulation and Yield of Cowpea [Vigna unguiculata (L.) WALP.] at Haik and Mersa in Wollo, Northern Ethiopia. Int J Appl Agric Sci. 2016;2(6):99-111. doi: 10.11648/j.ijaas.20160206.14

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@article{10.11648/j.ijaas.20160206.14,
  author = {Getachew Mekonnen and Mekdes Dessie},
  title = {Effect of Pre-emergence Herbicides on Weeds, Nodulation and Yield of Cowpea [Vigna unguiculata (L.) WALP.] at Haik and Mersa in Wollo, Northern Ethiopia},
  journal = {International Journal of Applied Agricultural Sciences},
  volume = {2},
  number = {6},
  pages = {99-111},
  doi = {10.11648/j.ijaas.20160206.14},
  url = {https://doi.org/10.11648/j.ijaas.20160206.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijaas.20160206.14},
  abstract = {The experiment was conducted at Mersa and Haik, northern Ethiopia during the 2014 main cropping season to assess the effect of pre-emergence s-metolachlor and pendimethalin on nodulation, and yield of cowpea. There were 12 treatments comprising: s-metolachlor (1.0, 1.5 and 2.0 kg ha-1); pendimethalin (1.0, 1.3 and 1.6 kg ha-1), s-metolachlor at 1.0 kg ha-1 + hand weeding at 5 weeks after crop emergence (WAE), pendimethalin at 1.0 kg ha-1 + hand weeding at 5 WAE, one hand weeding at 2 WAE, two hand weeding at 2 and 5 WAE, weed free and weedy checks. The treatments were arranged in randomized complete block design with three replications. The minimum weed dry weight was registered with the application 2.0 kg ha-1 of s-metolachlor at both locations; however, at 55 DAE and at harvest, weeds accumulated significantly lower dry weight due to s-metolachlor 1.0 kg ha-1 and pendimethalin 1.0 kg ha-1 each pendimethalin superimposed with hand weeding at both locations. The interaction of location with weed management practices was significant on number and dry weight of nodules, number of pods plant-1, grain and aboveground dry biomass yield and yield loss. The maximum grain yield (4277 kg ha-1) was obtained in complete weed free treatment at Mersa which was statistically in parity with complete weed free and two hand weeding treatments at Haik and Mersa, respectively. Due to weed infestation throughout the crop growth, the highest yield loss (70.8%) was recorded at Haik while it was 47.5% at Mersa.},
 year = {2016}
}

Copy | Download

TY  - JOUR
T1  - Effect of Pre-emergence Herbicides on Weeds, Nodulation and Yield of Cowpea [Vigna unguiculata (L.) WALP.] at Haik and Mersa in Wollo, Northern Ethiopia
AU  - Getachew Mekonnen
AU  - Mekdes Dessie
Y1  - 2016/12/21
PY  - 2016
N1  - https://doi.org/10.11648/j.ijaas.20160206.14
DO  - 10.11648/j.ijaas.20160206.14
T2  - International Journal of Applied Agricultural Sciences
JF  - International Journal of Applied Agricultural Sciences
JO  - International Journal of Applied Agricultural Sciences
SP  - 99
EP  - 111
PB  - Science Publishing Group
SN  - 2469-7885
UR  - https://doi.org/10.11648/j.ijaas.20160206.14
AB  - The experiment was conducted at Mersa and Haik, northern Ethiopia during the 2014 main cropping season to assess the effect of pre-emergence s-metolachlor and pendimethalin on nodulation, and yield of cowpea. There were 12 treatments comprising: s-metolachlor (1.0, 1.5 and 2.0 kg ha-1); pendimethalin (1.0, 1.3 and 1.6 kg ha-1), s-metolachlor at 1.0 kg ha-1 + hand weeding at 5 weeks after crop emergence (WAE), pendimethalin at 1.0 kg ha-1 + hand weeding at 5 WAE, one hand weeding at 2 WAE, two hand weeding at 2 and 5 WAE, weed free and weedy checks. The treatments were arranged in randomized complete block design with three replications. The minimum weed dry weight was registered with the application 2.0 kg ha-1 of s-metolachlor at both locations; however, at 55 DAE and at harvest, weeds accumulated significantly lower dry weight due to s-metolachlor 1.0 kg ha-1 and pendimethalin 1.0 kg ha-1 each pendimethalin superimposed with hand weeding at both locations. The interaction of location with weed management practices was significant on number and dry weight of nodules, number of pods plant-1, grain and aboveground dry biomass yield and yield loss. The maximum grain yield (4277 kg ha-1) was obtained in complete weed free treatment at Mersa which was statistically in parity with complete weed free and two hand weeding treatments at Haik and Mersa, respectively. Due to weed infestation throughout the crop growth, the highest yield loss (70.8%) was recorded at Haik while it was 47.5% at Mersa.
VL  - 2
IS  - 6
ER  -

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