Additive yield response of chickpea (Cicer arietinum L.) to rhizobium inoculation and phosphorus fertilizer across smallholder farms in Ethiopia
The impacts of rhizobium inoculation on growth and yield of chickpea have mainly been tested in experiments conducted in greenhouses or on research stations. We report the response of the crop to inoculation (I) and phosphorus fertilizer (P) application across a large number of smallholder’s farms o...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Elsevier
2018
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/92399 |
| _version_ | 1855530365127491584 |
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| author | Woldemeskel, Endalkachew Heerwaarden, Joost van Abdulkadir, Birhan Kassa, S. Aliyi, I. Degefu, T. Wakweya, K. Kanampiu, F.K. Giller, Kenneth E. |
| author_browse | Abdulkadir, Birhan Aliyi, I. Degefu, T. Giller, Kenneth E. Heerwaarden, Joost van Kanampiu, F.K. Kassa, S. Wakweya, K. Woldemeskel, Endalkachew |
| author_facet | Woldemeskel, Endalkachew Heerwaarden, Joost van Abdulkadir, Birhan Kassa, S. Aliyi, I. Degefu, T. Wakweya, K. Kanampiu, F.K. Giller, Kenneth E. |
| author_sort | Woldemeskel, Endalkachew |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The impacts of rhizobium inoculation on growth and yield of chickpea have mainly been tested in experiments conducted in greenhouses or on research stations. We report the response of the crop to inoculation (I) and phosphorus fertilizer (P) application across a large number of smallholder’s farms over four regions of Ethiopia, covering diverse soil fertility and agro-ecological conditions. Increased grain yields due to the soil fertility treatments was evident for 99% target farmers. On average, I and P increased grain yield by 21% and 25% respectively, while the combined application of I and P resulted in a 38% increase. However, observed grain yields on control plots and responses to the treatments on individual farms varied greatly, and relative yield responses (%; yield of P and/I minus control yield, divided by control yield) ranged from 3% to 138%. With the exception of a few extremely poorly yielding locations, average responses to P and I were high across a wide range of control yields, indicating the possibility of boosting chickpea productivity for smallholders with P fertilizer and inoculant technology. Variation in response to rhizobium inoculation was mostly independent of agro-ecology and soil type although it was found to be low on a number of farms with extremely high N contents (%). Assuming that a relative yield increase of 10% due to treatment effects is required to be visible, 71%, 73% and 92% of the farmers observed a yield benefit by applying P, I, and P + I, respectively. The results are discussed with respect to the additive benefits of P fertilizers and rhizobial inoculation and their implications for wide scale promotion of inoculant technology to smallholders. |
| format | Journal Article |
| id | CGSpace92399 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace923992024-05-01T08:18:11Z Additive yield response of chickpea (Cicer arietinum L.) to rhizobium inoculation and phosphorus fertilizer across smallholder farms in Ethiopia Woldemeskel, Endalkachew Heerwaarden, Joost van Abdulkadir, Birhan Kassa, S. Aliyi, I. Degefu, T. Wakweya, K. Kanampiu, F.K. Giller, Kenneth E. fertilizers smallholders farmers legumes research soil The impacts of rhizobium inoculation on growth and yield of chickpea have mainly been tested in experiments conducted in greenhouses or on research stations. We report the response of the crop to inoculation (I) and phosphorus fertilizer (P) application across a large number of smallholder’s farms over four regions of Ethiopia, covering diverse soil fertility and agro-ecological conditions. Increased grain yields due to the soil fertility treatments was evident for 99% target farmers. On average, I and P increased grain yield by 21% and 25% respectively, while the combined application of I and P resulted in a 38% increase. However, observed grain yields on control plots and responses to the treatments on individual farms varied greatly, and relative yield responses (%; yield of P and/I minus control yield, divided by control yield) ranged from 3% to 138%. With the exception of a few extremely poorly yielding locations, average responses to P and I were high across a wide range of control yields, indicating the possibility of boosting chickpea productivity for smallholders with P fertilizer and inoculant technology. Variation in response to rhizobium inoculation was mostly independent of agro-ecology and soil type although it was found to be low on a number of farms with extremely high N contents (%). Assuming that a relative yield increase of 10% due to treatment effects is required to be visible, 71%, 73% and 92% of the farmers observed a yield benefit by applying P, I, and P + I, respectively. The results are discussed with respect to the additive benefits of P fertilizers and rhizobial inoculation and their implications for wide scale promotion of inoculant technology to smallholders. 2018-07 2018-04-27T06:57:33Z 2018-04-27T06:57:33Z Journal Article https://hdl.handle.net/10568/92399 en Open Access Elsevier Wolde-meskel, E., Heerwaarden, J., Abdulkadir, B., Kassa, S., Aliyi, I., Degefu, T., Wakweya, K., Kanampiu, F. and Giller, K.E. 2018. Additive yield response of chickpea (Cicer arietinum L.) to rhizobium inoculation and phosphorus fertilizer across smallholder farms in Ethiopia. Agriculture, Ecosystems & Environment 261: 144-152 |
| spellingShingle | fertilizers smallholders farmers legumes research soil Woldemeskel, Endalkachew Heerwaarden, Joost van Abdulkadir, Birhan Kassa, S. Aliyi, I. Degefu, T. Wakweya, K. Kanampiu, F.K. Giller, Kenneth E. Additive yield response of chickpea (Cicer arietinum L.) to rhizobium inoculation and phosphorus fertilizer across smallholder farms in Ethiopia |
| title | Additive yield response of chickpea (Cicer arietinum L.) to rhizobium inoculation and phosphorus fertilizer across smallholder farms in Ethiopia |
| title_full | Additive yield response of chickpea (Cicer arietinum L.) to rhizobium inoculation and phosphorus fertilizer across smallholder farms in Ethiopia |
| title_fullStr | Additive yield response of chickpea (Cicer arietinum L.) to rhizobium inoculation and phosphorus fertilizer across smallholder farms in Ethiopia |
| title_full_unstemmed | Additive yield response of chickpea (Cicer arietinum L.) to rhizobium inoculation and phosphorus fertilizer across smallholder farms in Ethiopia |
| title_short | Additive yield response of chickpea (Cicer arietinum L.) to rhizobium inoculation and phosphorus fertilizer across smallholder farms in Ethiopia |
| title_sort | additive yield response of chickpea cicer arietinum l to rhizobium inoculation and phosphorus fertilizer across smallholder farms in ethiopia |
| topic | fertilizers smallholders farmers legumes research soil |
| url | https://hdl.handle.net/10568/92399 |
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