Biophysical and crop management gradients limiting yields of east African highland banana (Musa spp. AAAEA) within farms in low input cropping systems
The study aimed to quantify the relative contributions of soil fertility factors (S), pests and diseases (P) and crop management practices (M) to highland banana (Musa spp. AAA-EA) yields under heterogeneous on-farm conditions. Soil status, nutrient levels, pests, crop management from 150 mats withi...
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| Format: | Journal Article |
| Language: | Inglés |
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2014
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| Online Access: | https://hdl.handle.net/10568/75912 |
| _version_ | 1855542997781839872 |
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| author | Alou, I.N. Asten, Piet J.A. van Tenywa, M.M. |
| author_browse | Alou, I.N. Asten, Piet J.A. van Tenywa, M.M. |
| author_facet | Alou, I.N. Asten, Piet J.A. van Tenywa, M.M. |
| author_sort | Alou, I.N. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The study aimed to quantify the relative contributions of soil fertility factors (S), pests and diseases (P) and crop management practices (M) to highland banana (Musa spp. AAA-EA) yields under heterogeneous on-farm conditions. Soil status, nutrient levels, pests, crop management from 150 mats within close (CH), mid (MH) and remote (RH) distances of 10 homesteads in Butare, Southwest Uganda were monitored from 2006-2008. Actual yields (14.3 Mg ha-1 yr-1) of dominant cultivar (cv. ‘Enyeru’) were limited by S (62.8%), P (22.0%) and M factors (15.2%). Bunch mass was limited by low soil pH (< 6.2), low exch. Ca (< 2.04 cmol+kg-1), Mg (< 2.3 cmol+kg-1), high K:Mg ratio (0.99±1.2), mat density (> 1512 mats ha-1) and excessive defoliation (< 9 functional leaves) from boundary line analysis. DRIS norms of exchangeable bases were low relative to N, P & K. Banana weevil and nematode damages contributed 21.7% and 3.3% of yield limitations, respectively. Most S factors limited yields in ‘fertile’ CH (75%) and P factors in MH and RH which differed with household resource endowment. Spatial variability in biophysical factors within small farms is so large and should be considered when addressing yield limitations to highland banana yields. |
| format | Journal Article |
| id | CGSpace75912 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| record_format | dspace |
| spelling | CGSpace759122023-06-13T06:36:52Z Biophysical and crop management gradients limiting yields of east African highland banana (Musa spp. AAAEA) within farms in low input cropping systems Alou, I.N. Asten, Piet J.A. van Tenywa, M.M. bananas crop management The study aimed to quantify the relative contributions of soil fertility factors (S), pests and diseases (P) and crop management practices (M) to highland banana (Musa spp. AAA-EA) yields under heterogeneous on-farm conditions. Soil status, nutrient levels, pests, crop management from 150 mats within close (CH), mid (MH) and remote (RH) distances of 10 homesteads in Butare, Southwest Uganda were monitored from 2006-2008. Actual yields (14.3 Mg ha-1 yr-1) of dominant cultivar (cv. ‘Enyeru’) were limited by S (62.8%), P (22.0%) and M factors (15.2%). Bunch mass was limited by low soil pH (< 6.2), low exch. Ca (< 2.04 cmol+kg-1), Mg (< 2.3 cmol+kg-1), high K:Mg ratio (0.99±1.2), mat density (> 1512 mats ha-1) and excessive defoliation (< 9 functional leaves) from boundary line analysis. DRIS norms of exchangeable bases were low relative to N, P & K. Banana weevil and nematode damages contributed 21.7% and 3.3% of yield limitations, respectively. Most S factors limited yields in ‘fertile’ CH (75%) and P factors in MH and RH which differed with household resource endowment. Spatial variability in biophysical factors within small farms is so large and should be considered when addressing yield limitations to highland banana yields. 2014 2016-07-04T08:15:23Z 2016-07-04T08:15:23Z Journal Article https://hdl.handle.net/10568/75912 en Limited Access Alou, I.N., Van Asten, P. & Tenywa, M. (2014). Biophysical and crop management gradients limiting yields of East African highland banana (Musa spp. AAA-EA) within farms in low input cropping systems. International Journal of Agricultural Science and Research, 4(3), 27-43. |
| spellingShingle | bananas crop management Alou, I.N. Asten, Piet J.A. van Tenywa, M.M. Biophysical and crop management gradients limiting yields of east African highland banana (Musa spp. AAAEA) within farms in low input cropping systems |
| title | Biophysical and crop management gradients limiting yields of east African highland banana (Musa spp. AAAEA) within farms in low input cropping systems |
| title_full | Biophysical and crop management gradients limiting yields of east African highland banana (Musa spp. AAAEA) within farms in low input cropping systems |
| title_fullStr | Biophysical and crop management gradients limiting yields of east African highland banana (Musa spp. AAAEA) within farms in low input cropping systems |
| title_full_unstemmed | Biophysical and crop management gradients limiting yields of east African highland banana (Musa spp. AAAEA) within farms in low input cropping systems |
| title_short | Biophysical and crop management gradients limiting yields of east African highland banana (Musa spp. AAAEA) within farms in low input cropping systems |
| title_sort | biophysical and crop management gradients limiting yields of east african highland banana musa spp aaaea within farms in low input cropping systems |
| topic | bananas crop management |
| url | https://hdl.handle.net/10568/75912 |
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