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| Høgh-Jensen, H; Myaka, F.A.; Sakala, W.D.; Kamalongo, D.; Ngwira, A.; Vesterager, J.M.; Odgaard, R.; Adu-Gyamfi, J.J.. |
| Pigeonpea is one of the few crops with a high potential for resource-poor farmers due to its complementary resource use when intercropped with maize. A three year comprehensive comparative study on the performance of six pigeonpea (Cajanus cajan) varieties on farmers’ fields in Eastern and Southern Africa where intercropping with maize is normal practice, was undertaken. The varieties were tested for accumulation of dry matter (DM), nitrogen (N) and phosphorus (P) in all above-ground organs for three years under farmers’ conditions. The study revealed that the latest introduced ICEAP 00040 outperformed all the other tested varieties (ICP 9145; ICEAP 00020, ICEAP 00053, ICEAP 00068, and a local variety called “Babati White”) under farmer-managed conditions.... |
| Tipo: Journal paper |
Palavras-chave: Farming Systems; Farm nutrient management; Social aspects. |
| Ano: 2007 |
URL: http://orgprints.org/11465/1/11465.pdf |
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| Rasmussen, J; Eriksen, J; Jensen, E S; Høgh-Jensen, H. |
| Two field experiments investigating dynamics in grass-clover mixtures were conducted, using 15N- and 14C-labelling to trace carbon (C) and nitrogen (N) from grass (Lolium perenne L.) and clover (Trifolium repens L. and Trifolium pratense L.). The leaching of dissolved inorganic nitrogen (DIN), as measured in pore water sampled by suction cups, increased during the autumn and winter, whereas the leaching of dissolved organic nitrogen (DON) was fairly constant during this period. Leaching of 15N from the sward indicated that ryegrass was the direct source of less than 1-2 percent of the total N leaching measured, whereas N dynamics pointed to clover as an important contributor to N leaching. Sampling of roots indicates that the dynamics in smaller roots were... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Nutrient turnover; Air and water emissions. |
| Ano: 2008 |
URL: http://orgprints.org/14647/1/Full_length_paper_Jim_Rasmussen.pdf |
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