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N₂ fixation, plant mineral nutrition and C metabolites in cowpea/maize cropping systems
The objective of this study was (1) quantify N₂ fixation in sole and mixed cropped cowpea, (2) To access nutrient assimilation by component species in the cropping system, and (3) to determine the effects of cropping system on C metabolites. At harvest the dry mass of both cowpea and maize were high...
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| Format: | Thesis |
| Language: | English |
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Department of Biological Sciences
2017
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| _version_ | 1867613276989292545 |
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| access_status_str | Open Access |
| author | Monakisi, Charlotte |
| author2 | Dakora, Felix D |
| author_browse | Dakora, Felix D Monakisi, Charlotte |
| author_facet | Dakora, Felix D Monakisi, Charlotte |
| author_sort | Monakisi, Charlotte |
| collection | Thesis |
| description | The objective of this study was (1) quantify N₂ fixation in sole and mixed cropped cowpea, (2) To access nutrient assimilation by component species in the cropping system, and (3) to determine the effects of cropping system on C metabolites. At harvest the dry mass of both cowpea and maize were highest in sole crops. There was a significant difference in % nitrogen of maize and cowpea plants from the different cropping systems. Total nitrogen content was highest in sole cropped maize and cowpea plants with sole cowpea fixing the most N₂. δ¹⁵N values were lower for the shoots of symbiotic cowpea compared to the maize. Root δ¹⁵N values were also generally lower in cowpea than in maize. The %N derived from fixation (Ndfa) was similar for sole, intra and intercropped cowpea. However the amount of N fixed was significantly greater in sole cowpea compared to intra- and intercropped cowpea. When nutrient uptake and assimilation was assessed in the cropping system, it was found that mineral elements such as Ca, Mg, Cu, Zn and B occurred in significantly greater concentrations in the N₂-fixing legume compared to the cereal partner. However the concentration of soluble sugars and starch remained the same for both shoot and roots of cowpea and maize plants in the cropping system. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/25932 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:33:33.643Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | Department of Biological Sciences |
| publisherStr | Department of Biological Sciences |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/25932 N₂ fixation, plant mineral nutrition and C metabolites in cowpea/maize cropping systems Monakisi, Charlotte Dakora, Felix D Botany The objective of this study was (1) quantify N₂ fixation in sole and mixed cropped cowpea, (2) To access nutrient assimilation by component species in the cropping system, and (3) to determine the effects of cropping system on C metabolites. At harvest the dry mass of both cowpea and maize were highest in sole crops. There was a significant difference in % nitrogen of maize and cowpea plants from the different cropping systems. Total nitrogen content was highest in sole cropped maize and cowpea plants with sole cowpea fixing the most N₂. δ¹⁵N values were lower for the shoots of symbiotic cowpea compared to the maize. Root δ¹⁵N values were also generally lower in cowpea than in maize. The %N derived from fixation (Ndfa) was similar for sole, intra and intercropped cowpea. However the amount of N fixed was significantly greater in sole cowpea compared to intra- and intercropped cowpea. When nutrient uptake and assimilation was assessed in the cropping system, it was found that mineral elements such as Ca, Mg, Cu, Zn and B occurred in significantly greater concentrations in the N₂-fixing legume compared to the cereal partner. However the concentration of soluble sugars and starch remained the same for both shoot and roots of cowpea and maize plants in the cropping system. 2017-10-30T14:08:02Z 2017-10-30T14:08:02Z 2002 2017-03-10T11:20:44Z Bachelor Thesis Honours BSc (Hons) http://hdl.handle.net/11427/25932 eng application/pdf Department of Biological Sciences Faculty of Science University of Cape Town |
| spellingShingle | Botany Monakisi, Charlotte N₂ fixation, plant mineral nutrition and C metabolites in cowpea/maize cropping systems |
| thesis_degree_str | Bachelor's / Honours |
| title | N₂ fixation, plant mineral nutrition and C metabolites in cowpea/maize cropping systems |
| title_full | N₂ fixation, plant mineral nutrition and C metabolites in cowpea/maize cropping systems |
| title_fullStr | N₂ fixation, plant mineral nutrition and C metabolites in cowpea/maize cropping systems |
| title_full_unstemmed | N₂ fixation, plant mineral nutrition and C metabolites in cowpea/maize cropping systems |
| title_short | N₂ fixation, plant mineral nutrition and C metabolites in cowpea/maize cropping systems |
| title_sort | n₂ fixation plant mineral nutrition and c metabolites in cowpea maize cropping systems |
| topic | Botany |
| url | http://hdl.handle.net/11427/25932 |
| work_keys_str_mv | AT monakisicharlotte n2fixationplantmineralnutritionandcmetabolitesincowpeamaizecroppingsystems |