Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Improving water and nutrient use efficiency of Phaseolus vulgaris after flooded rice in Bwanje Valley irrigation scheme, Malawi
Mini Dissertation (MSc)--University of Pretoria, 2019.
Saved in:
| Other Authors: | |
|---|---|
| Format: | Thesis |
| Language: | English |
| Published: |
University of Pretoria
2019
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613681481678848 |
|---|---|
| access_status_str | Open Access |
| author2 | Annandale, John George |
| author_browse | Annandale, John George |
| author_facet | Annandale, John George |
| collection | Thesis |
| dc_rights_str_mv | © 2018 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Mini Dissertation (MSc)--University of Pretoria, 2019. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/68450 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:40:00.824Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/68450 Improving water and nutrient use efficiency of Phaseolus vulgaris after flooded rice in Bwanje Valley irrigation scheme, Malawi Annandale, John George nthandowe@yahoo.com Sanewe, Andrew Stirzaker, Richard John Chinula, Thandiwe Water and nutrient management UCTD Mini Dissertation (MSc)--University of Pretoria, 2019. Phaseolus vulgaris is an essential legume crop for Bwanje people, because of its protein content for low-income population and good market availability. However, its yield is very low below pontential (2-3 t ha-1). In terms of irrigation scheme utilisation, Bwanje irrigation scheme is heavily under-utilised in winter as only 145 ha is cultivated out of 800 ha. The Major factors contributing to all these problems are; inadequate nutrition, use of uncertified seed, poor water management and poor agronomic practices. The research was carried out to find the best way to use water and nutrients in order to improve the bean yields, and increase the irrigated area planted after flooded rice through use of residual soil water. The pontential yield could be achieved with appropriate balance of nutrients, water, good agronomic practices and timely use of residual soil water. The study looked at four different treatments replicated three times; Farmer Practice (FP), Farmer Irrigation and Luxury Nutrients (FILN), Optimum Irrigation and Luxury Nutrients (OILN), and Strategic Irrigation and Luxury Nutrients (SILN). Climatic database, Climwat and Cropwat were used to test the possibility of expanding irrigated area through better use of residual soil water by timely planting. FP received water as the farmer desired, OILN received water based on Chameleon sensors colours and SILN received water only when the crop showed stress signs. FP received 387 mm, FILN received 391 mm, OILN received 226 mm and SILN received 213 mm. OILN produced highest yield (2.75 t ha-1), and FP produced lowest yield (2.1 t ha-1). Farmer Irrigation leached most of the nutrients unlike in OILN and SILN where leaching was minimal. Through a desktop analysis the model indicated that in winter, an irrigated area could be increased by 78 ha. Therefore, Wetting Front Detectors and Chameleon Sensors could be used to minimise the loss of nutrients and improve water management through continuous monitoring thereby improve bean yield. Key Words: Phaseolus vulgaris, water management, nutrients, Chameleon sensors, Wetting Front Detectors, residual soil water. This material is based upon work supported by United States Agency for International Development, as part of the Feed the Future Initiative, under the CGIAR. Fund, award number BFS-G-11-00002, and the predecessor fund, the Food Security and Crisis Mitigation II grant, award number EEM-G-00-04-00013. And Virtual Irrigation Academy (VIA) Plant Production and Soil Science MSc Unrestricted 2019-02-13T09:23:59Z 2019-02-13T09:23:59Z 2019-04-15 2019 Mini Dissertation Chinula, T 2019, Improving water and nutrient use efficiency of Phaseolus vulgaris after flooded rice in Bwanje Valley irrigation scheme, Malawi, MSc Mini Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/68450> A2019 http://hdl.handle.net/2263/68450 en © 2018 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | Water and nutrient management UCTD Improving water and nutrient use efficiency of Phaseolus vulgaris after flooded rice in Bwanje Valley irrigation scheme, Malawi |
| title | Improving water and nutrient use efficiency of Phaseolus vulgaris after flooded rice in Bwanje Valley irrigation scheme, Malawi |
| title_full | Improving water and nutrient use efficiency of Phaseolus vulgaris after flooded rice in Bwanje Valley irrigation scheme, Malawi |
| title_fullStr | Improving water and nutrient use efficiency of Phaseolus vulgaris after flooded rice in Bwanje Valley irrigation scheme, Malawi |
| title_full_unstemmed | Improving water and nutrient use efficiency of Phaseolus vulgaris after flooded rice in Bwanje Valley irrigation scheme, Malawi |
| title_short | Improving water and nutrient use efficiency of Phaseolus vulgaris after flooded rice in Bwanje Valley irrigation scheme, Malawi |
| title_sort | improving water and nutrient use efficiency of phaseolus vulgaris after flooded rice in bwanje valley irrigation scheme malawi |
| topic | Water and nutrient management UCTD |
| url | http://hdl.handle.net/2263/68450 |