Agronomic assessment of phosphorus efficacy for potato (Solanum tuberosum L) under legume intercrops
Phosphorus (P) is an essential element and its efficient use is of global importance. This study evaluated the effect of growing potato under legume intercrops on P uptake and use efficiency indices: P harvest index (PHI), P uptake efficiency (PuPE), P partial factor productivity (PPFP) and P partia...
| Autores principales: | , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
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Informa UK Limited
2020
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| Acceso en línea: | https://hdl.handle.net/10568/106273 |
| _version_ | 1855515953635262464 |
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| author | Gitari, H.I. Nyawade, S. Kamau, S. Karanja, N. Gachene, C.K.K. Schulte-Geldermann, Elmar |
| author_browse | Gachene, C.K.K. Gitari, H.I. Kamau, S. Karanja, N. Nyawade, S. Schulte-Geldermann, Elmar |
| author_facet | Gitari, H.I. Nyawade, S. Kamau, S. Karanja, N. Gachene, C.K.K. Schulte-Geldermann, Elmar |
| author_sort | Gitari, H.I. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Phosphorus (P) is an essential element and its efficient use is of global importance. This study evaluated the effect of growing potato under legume intercrops on P uptake and use efficiency indices: P harvest index (PHI), P uptake efficiency (PuPE), P partial factor productivity (PPFP) and P partial balance (PPB). The experiment was carried out for four consecutive seasons with treatments comprising potato cultivated under legume intercrops: none (T1), dolichos (Lablab purpureus L) (T2), peas (Pisum sativum L) (T3) and beans (Phaseolus vulgaris L) (T4). Across the seasons, the mean haulm P uptake for T2 (6.7 kg P ha−1), T4 (5.5) and T3 (4.5) were 6%, 23% and 36% lower than that observed in T1 (7.1 kg P ha−1), respectively. On the other hand, tuber P uptake was highest in T1 (21.8 kg P ha−1) and T2 (21.3 kg P ha−1) and were significantly higher than 13.2 kg P ha−1 in T3 and 15.1 kg P ha−1 in T4. This had a profound effect on PuPE, which was equally highest in T1 (0.26 kg total P uptake kg−1 P supply) and T2 (0.25) and lowest in T3 (0.16) and T4 (0.18). Similarly, PPFP, PHI and PPB followed a similar trend, with highest values in T1 (57 kg tuber dry matter yield kg−1 P supply, 76.4 kg tuber P uptake kg−1 total plant’s P uptake and 0.20 kg tuber P uptake kg−1 P supply, respectively). Among the tested legume intercrops, dolichos competed least for P with the main crop (potato) hence it can be integrated into potato-based cropping systems without compromising potato tuber yield. |
| format | Journal Article |
| id | CGSpace106273 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Informa UK Limited |
| publisherStr | Informa UK Limited |
| record_format | dspace |
| spelling | CGSpace1062732025-03-13T09:46:14Z Agronomic assessment of phosphorus efficacy for potato (Solanum tuberosum L) under legume intercrops Gitari, H.I. Nyawade, S. Kamau, S. Karanja, N. Gachene, C.K.K. Schulte-Geldermann, Elmar intercropping phosphorus harvest index legumes potatoes physiology Phosphorus (P) is an essential element and its efficient use is of global importance. This study evaluated the effect of growing potato under legume intercrops on P uptake and use efficiency indices: P harvest index (PHI), P uptake efficiency (PuPE), P partial factor productivity (PPFP) and P partial balance (PPB). The experiment was carried out for four consecutive seasons with treatments comprising potato cultivated under legume intercrops: none (T1), dolichos (Lablab purpureus L) (T2), peas (Pisum sativum L) (T3) and beans (Phaseolus vulgaris L) (T4). Across the seasons, the mean haulm P uptake for T2 (6.7 kg P ha−1), T4 (5.5) and T3 (4.5) were 6%, 23% and 36% lower than that observed in T1 (7.1 kg P ha−1), respectively. On the other hand, tuber P uptake was highest in T1 (21.8 kg P ha−1) and T2 (21.3 kg P ha−1) and were significantly higher than 13.2 kg P ha−1 in T3 and 15.1 kg P ha−1 in T4. This had a profound effect on PuPE, which was equally highest in T1 (0.26 kg total P uptake kg−1 P supply) and T2 (0.25) and lowest in T3 (0.16) and T4 (0.18). Similarly, PPFP, PHI and PPB followed a similar trend, with highest values in T1 (57 kg tuber dry matter yield kg−1 P supply, 76.4 kg tuber P uptake kg−1 total plant’s P uptake and 0.20 kg tuber P uptake kg−1 P supply, respectively). Among the tested legume intercrops, dolichos competed least for P with the main crop (potato) hence it can be integrated into potato-based cropping systems without compromising potato tuber yield. 2020-02 2019-12-20T01:53:41Z 2019-12-20T01:53:41Z Journal Article https://hdl.handle.net/10568/106273 en Limited Access Informa UK Limited Gitari, H.I.; Nyawade, S.; Kamau, S.; Karanja, N.N.; Gachene, C.K.K.; Schulte-Geldermann, E. 2020. Agronomic assessment of phosphorus efficacy for potato (Solanum tuberosum L) under legume intercrops. Journal of Plant Nutrition. ISSN 0190-4167. 15 p. |
| spellingShingle | intercropping phosphorus harvest index legumes potatoes physiology Gitari, H.I. Nyawade, S. Kamau, S. Karanja, N. Gachene, C.K.K. Schulte-Geldermann, Elmar Agronomic assessment of phosphorus efficacy for potato (Solanum tuberosum L) under legume intercrops |
| title | Agronomic assessment of phosphorus efficacy for potato (Solanum tuberosum L) under legume intercrops |
| title_full | Agronomic assessment of phosphorus efficacy for potato (Solanum tuberosum L) under legume intercrops |
| title_fullStr | Agronomic assessment of phosphorus efficacy for potato (Solanum tuberosum L) under legume intercrops |
| title_full_unstemmed | Agronomic assessment of phosphorus efficacy for potato (Solanum tuberosum L) under legume intercrops |
| title_short | Agronomic assessment of phosphorus efficacy for potato (Solanum tuberosum L) under legume intercrops |
| title_sort | agronomic assessment of phosphorus efficacy for potato solanum tuberosum l under legume intercrops |
| topic | intercropping phosphorus harvest index legumes potatoes physiology |
| url | https://hdl.handle.net/10568/106273 |
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