Effect of Lablab purpureus L. cover crop and imidazolinone resistant (IR) maize on weeds in drought prone areas, Kenya
Weeds compete for nutrients and soil moisture resulting to low maize yields in dry lands. A three year field study was initiated in 2009 at Kenya Agricultural and Livestock Research Organization, Kiboko to evaluate the effect of dolichos bean (Lablab purpureus L.) and open pollinated imazapyr herbic...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Elsevier
2015
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/74449 |
| _version_ | 1855525558284189696 |
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| author | Mwangi, H.W. Kihurani, A.W. Wesonga, J.M. Ariga, E.S. Kanampiu, F.K. |
| author_browse | Ariga, E.S. Kanampiu, F.K. Kihurani, A.W. Mwangi, H.W. Wesonga, J.M. |
| author_facet | Mwangi, H.W. Kihurani, A.W. Wesonga, J.M. Ariga, E.S. Kanampiu, F.K. |
| author_sort | Mwangi, H.W. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Weeds compete for nutrients and soil moisture resulting to low maize yields in dry lands. A three year field study was initiated in 2009 at Kenya Agricultural and Livestock Research Organization, Kiboko to evaluate the effect of dolichos bean (Lablab purpureus L.) and open pollinated imazapyr herbicide coated imidazolinone-resistant (IR)1 maize on weed species composition, density, and maize yield. Initially, weed species were identified, and then controlled using glyphosate at 1.6 kg ai ha 1. Twenty four plots were marked, each measuring 4 5 m. Six treatments 1) IR-maize coated, 2) IR-maize coated þ brown dolichos, 3) IR-maize coated þ black dolichos 4) IR-maize uncoated, 5) IR-maize uncoated þ brown dolichos, 6) IR-maize uncoated þ black dolichos were laid out in a randomized complete block design replicated four times. IR-maize was planted at a spacing of 90 45 cm and 2 seeds per hole. Weeds were sampled from a one meter squared quadrat 21 and 42 days after planting (DAP). The data was subjected to analysis of variance using Genstat version 12.0. Eighteen (18) weed species were prevalent before the experiment. Interaction of dolichos and herbicide coated IR-maize had no significant (P > 0.05) effect on weed species composition and density. Dolichos significantly (P < 0.05) reduced the density of Portulaca quadrifida L. and Paraknoxia parviflora L., and increased Eleusine indica L. Weed species composition decreased by 14% (21 DAP) and 33% (42 DAP) in plots with dolichos compared to no cover. Maize yields were significantly (P < 0.05) higher in plots with dolichos than without. From the findings, this study recommends dolichos integration with coated IR-for weed management and increased maize yields in drylands.Weeds compete for nutrients and soil moisture resulting to low maize yields in dry lands. A three year field study was initiated in 2009 at Kenya Agricultural and Livestock Research Organization, Kiboko to evaluate the effect of dolichos bean (Lablab purpureus L.) and open pollinated imazapyr herbicide coated imidazolinone-resistant (IR)1 maize on weed species composition, density, and maize yield. Initially, weed species were identified, and then controlled using glyphosate at 1.6 kg ai ha 1. Twenty four plots were marked, each measuring 4 5 m. Six treatments 1) IR-maize coated, 2) IR-maize coated þ brown dolichos, 3) IR-maize coated þ black dolichos 4) IR-maize uncoated, 5) IR-maize uncoated þ brown dolichos, 6) IR-maize uncoated þ black dolichos were laid out in a randomized complete block design replicated four times. IR-maize was planted at a spacing of 90 45 cm and 2 seeds per hole. Weeds were sampled from a one meter squared quadrat 21 and 42 days after planting (DAP). The data was subjected to analysis of variance using Genstat version 12.0. Eighteen (18) weed species were prevalent before the experiment. Interaction of dolichos and herbicide coated IR-maize had no significant (P > 0.05) effect on weed species composition and density. Dolichos significantly (P < 0.05) reduced the density of Portulaca quadrifida L. and Paraknoxia parviflora L., and increased Eleusine indica L. Weed species composition decreased by 14% (21 DAP) and 33% (42 DAP) in plots with dolichos compared to no cover. Maize yields were significantly (P < 0.05) higher in plots with dolichos than without. From the findings, this study recommends dolichos integration with coated IR-for weed management and increased maize yields in drylands.Weeds compete for nutrients and soil moisture resulting to low maize yields in dry lands. A three year field study was initiated in 2009 at Kenya Agricultural and Livestock Research Organization, Kiboko to evaluate the effect of dolichos bean (Lablab purpureus L.) and open pollinated imazapyr herbicide coated imidazolinone-resistant (IR)1 maize on weed species composition, density, and maize yield. Initially, weed species were identified, and then controlled using glyphosate at 1.6 kg ai ha 1. Twenty four plots were marked, each measuring 4 5 m. Six treatments 1) IR-maize coated, 2) IR-maize coated þ brown dolichos, 3) IR-maize coated þ black dolichos 4) IR-maize uncoated, 5) IR-maize uncoated þ brown dolichos, 6) IR-maize uncoated þ black dolichos were laid out in a randomized complete block design replicated four times. IR-maize was planted at a spacing of 90 45 cm and 2 seeds per hole. Weeds were sampled from a one meter squared quadrat 21 and 42 days after planting (DAP). The data was subjected to analysis of variance using Genstat version 12.0. Eighteen (18) weed species were prevalent before the experiment. Interaction of dolichos and herbicide coated IR-maize had no significant (P > 0.05) effect on weed species composition and density. Dolichos significantly (P < 0.05) reduced the density of Portulaca quadrifida L. and Paraknoxia parviflora L., and increased Eleusine indica L. Weed species composition decreased by 14% (21 DAP) and 33% (42 DAP) in plots with dolichos compared to no cover. Maize yields were significantly (P < 0.05) higher in plots with dolichos than without. From the findings, this study recommends dolichos integration with coated IR-for weed management and increased maize yields in drylands. |
| format | Journal Article |
| id | CGSpace74449 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace744492024-05-01T08:17:26Z Effect of Lablab purpureus L. cover crop and imidazolinone resistant (IR) maize on weeds in drought prone areas, Kenya Mwangi, H.W. Kihurani, A.W. Wesonga, J.M. Ariga, E.S. Kanampiu, F.K. maize weeds cover crops Weeds compete for nutrients and soil moisture resulting to low maize yields in dry lands. A three year field study was initiated in 2009 at Kenya Agricultural and Livestock Research Organization, Kiboko to evaluate the effect of dolichos bean (Lablab purpureus L.) and open pollinated imazapyr herbicide coated imidazolinone-resistant (IR)1 maize on weed species composition, density, and maize yield. Initially, weed species were identified, and then controlled using glyphosate at 1.6 kg ai ha 1. Twenty four plots were marked, each measuring 4 5 m. Six treatments 1) IR-maize coated, 2) IR-maize coated þ brown dolichos, 3) IR-maize coated þ black dolichos 4) IR-maize uncoated, 5) IR-maize uncoated þ brown dolichos, 6) IR-maize uncoated þ black dolichos were laid out in a randomized complete block design replicated four times. IR-maize was planted at a spacing of 90 45 cm and 2 seeds per hole. Weeds were sampled from a one meter squared quadrat 21 and 42 days after planting (DAP). The data was subjected to analysis of variance using Genstat version 12.0. Eighteen (18) weed species were prevalent before the experiment. Interaction of dolichos and herbicide coated IR-maize had no significant (P > 0.05) effect on weed species composition and density. Dolichos significantly (P < 0.05) reduced the density of Portulaca quadrifida L. and Paraknoxia parviflora L., and increased Eleusine indica L. Weed species composition decreased by 14% (21 DAP) and 33% (42 DAP) in plots with dolichos compared to no cover. Maize yields were significantly (P < 0.05) higher in plots with dolichos than without. From the findings, this study recommends dolichos integration with coated IR-for weed management and increased maize yields in drylands.Weeds compete for nutrients and soil moisture resulting to low maize yields in dry lands. A three year field study was initiated in 2009 at Kenya Agricultural and Livestock Research Organization, Kiboko to evaluate the effect of dolichos bean (Lablab purpureus L.) and open pollinated imazapyr herbicide coated imidazolinone-resistant (IR)1 maize on weed species composition, density, and maize yield. Initially, weed species were identified, and then controlled using glyphosate at 1.6 kg ai ha 1. Twenty four plots were marked, each measuring 4 5 m. Six treatments 1) IR-maize coated, 2) IR-maize coated þ brown dolichos, 3) IR-maize coated þ black dolichos 4) IR-maize uncoated, 5) IR-maize uncoated þ brown dolichos, 6) IR-maize uncoated þ black dolichos were laid out in a randomized complete block design replicated four times. IR-maize was planted at a spacing of 90 45 cm and 2 seeds per hole. Weeds were sampled from a one meter squared quadrat 21 and 42 days after planting (DAP). The data was subjected to analysis of variance using Genstat version 12.0. Eighteen (18) weed species were prevalent before the experiment. Interaction of dolichos and herbicide coated IR-maize had no significant (P > 0.05) effect on weed species composition and density. Dolichos significantly (P < 0.05) reduced the density of Portulaca quadrifida L. and Paraknoxia parviflora L., and increased Eleusine indica L. Weed species composition decreased by 14% (21 DAP) and 33% (42 DAP) in plots with dolichos compared to no cover. Maize yields were significantly (P < 0.05) higher in plots with dolichos than without. From the findings, this study recommends dolichos integration with coated IR-for weed management and increased maize yields in drylands.Weeds compete for nutrients and soil moisture resulting to low maize yields in dry lands. A three year field study was initiated in 2009 at Kenya Agricultural and Livestock Research Organization, Kiboko to evaluate the effect of dolichos bean (Lablab purpureus L.) and open pollinated imazapyr herbicide coated imidazolinone-resistant (IR)1 maize on weed species composition, density, and maize yield. Initially, weed species were identified, and then controlled using glyphosate at 1.6 kg ai ha 1. Twenty four plots were marked, each measuring 4 5 m. Six treatments 1) IR-maize coated, 2) IR-maize coated þ brown dolichos, 3) IR-maize coated þ black dolichos 4) IR-maize uncoated, 5) IR-maize uncoated þ brown dolichos, 6) IR-maize uncoated þ black dolichos were laid out in a randomized complete block design replicated four times. IR-maize was planted at a spacing of 90 45 cm and 2 seeds per hole. Weeds were sampled from a one meter squared quadrat 21 and 42 days after planting (DAP). The data was subjected to analysis of variance using Genstat version 12.0. Eighteen (18) weed species were prevalent before the experiment. Interaction of dolichos and herbicide coated IR-maize had no significant (P > 0.05) effect on weed species composition and density. Dolichos significantly (P < 0.05) reduced the density of Portulaca quadrifida L. and Paraknoxia parviflora L., and increased Eleusine indica L. Weed species composition decreased by 14% (21 DAP) and 33% (42 DAP) in plots with dolichos compared to no cover. Maize yields were significantly (P < 0.05) higher in plots with dolichos than without. From the findings, this study recommends dolichos integration with coated IR-for weed management and increased maize yields in drylands. 2015-06 2016-05-25T11:59:41Z 2016-05-25T11:59:41Z Journal Article https://hdl.handle.net/10568/74449 en Limited Access Elsevier Mwangi, H.W., Kihurani, A.W., Wesonga, J.M., Ariga, E.S. & Kanampiu, F. (2015). Effect of Lablab purpureus L. cover crop and imidazolinone resistant (IR) maize on weeds in drought prone areas, Kenya. Crop Protection, 72, 36-40. |
| spellingShingle | maize weeds cover crops Mwangi, H.W. Kihurani, A.W. Wesonga, J.M. Ariga, E.S. Kanampiu, F.K. Effect of Lablab purpureus L. cover crop and imidazolinone resistant (IR) maize on weeds in drought prone areas, Kenya |
| title | Effect of Lablab purpureus L. cover crop and imidazolinone resistant (IR) maize on weeds in drought prone areas, Kenya |
| title_full | Effect of Lablab purpureus L. cover crop and imidazolinone resistant (IR) maize on weeds in drought prone areas, Kenya |
| title_fullStr | Effect of Lablab purpureus L. cover crop and imidazolinone resistant (IR) maize on weeds in drought prone areas, Kenya |
| title_full_unstemmed | Effect of Lablab purpureus L. cover crop and imidazolinone resistant (IR) maize on weeds in drought prone areas, Kenya |
| title_short | Effect of Lablab purpureus L. cover crop and imidazolinone resistant (IR) maize on weeds in drought prone areas, Kenya |
| title_sort | effect of lablab purpureus l cover crop and imidazolinone resistant ir maize on weeds in drought prone areas kenya |
| topic | maize weeds cover crops |
| url | https://hdl.handle.net/10568/74449 |
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