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| Mathu, Samuel; Thonar, Cécile; Vanlauwe, Bernard; Messmer, Monika; Frossard, Emmanuel. |
| Introduction In Kenya, cowpea is the most important pulse crop in the dry lands of Eastern and Coastal regions where it is commonly inter cropped with maize and sorghum. The poor yields obtained in small holder farms in Kenya (150 kg ha-1) can in part be attributed to the use of poor yielding varieties, low soil fertility (mainly N and P deficiency) low presence of effective indigenous rhizobia and high occurrence of highly competitive but inefficient indigenous rhizobia strains. Biological nitrogen fixation (BNF) through exploitation of the rhizobia-legume symbiosis and use of inoculants coupled with soil amendments such as Phosphorus offers in part a means to improve cowpea yield, nutrition and soil fertility. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil quality Breeding; Genetics and propagation Africa. |
| Ano: 2012 |
URL: http://orgprints.org/22169/1/mathu-etal-2012-Poster-ISFM-nairobi-kenya.pdf |
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| Hospers-Brands, A.J.T.M.; Ji, Yongran; Struik, P.C.; Lammerts van Bueren, E.T.. |
| Kool is een belangrijk gewas in Nederland. Koolsoorten vragen veel stikstof (ca. 300 kg N/ha)voor een goede groei, dikwijls meer dan binnen de huidige regelgeving in een biologische vruchtwisseling kan worden geleverd. Stikstof verhoogt de opbrengst, maar bij een hoog stikstofaanbod bereikt de opbrengst een plafond. Er is in het verleden veel onderzoek gedaan om de bemesting te optimaliseren. Voor een verdere verduurzaming van de teelt is het de vraag welke rassen robuust genoeg zijn om bij een beperkte hoeveelheid stikstof en wisselende weers- en groeiomstandigheden toch een economisch acceptabele en stabiele opbrengst te geven. En welke planteigenschappen spelen daarbij een cruciale rol? Door middel van literatuuronderzoek, gesprekken met deskundigen en... |
| Tipo: Report |
Palavras-chave: Soil quality Breeding; Genetics and propagation. |
| Ano: 2014 |
URL: http://orgprints.org/26238/1/2896.pdf |
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| Wang, Yaosheng; Andersen, Sven Bode; Thorup-Kristensen, Kristian; Jensen, Lars Stoumann; Magid, Jakob. |
| Root and root hairs of plants have been intensively studied in solution culture; however, correlation of such measurements in solution culture with development in soil is poorly understood. This study compared growth of roots and root hairs as well as uptake of macro- and micronutrients of six spring wheat varieties in solution culture under P stress and P abundance and in a low fertility soil. Results showed that root length and surface area under P stress was significantly positively correlated with that in the low fertility soil, while no such correlation was apparent for root hair length and density. In absolute terms the root length, surface area, root hair length and density of spring wheat varieties were substantially higher in soil than in solution... |
| Tipo: Journal paper |
Palavras-chave: Soil quality Breeding; Genetics and propagation. |
| Ano: 2014 |
URL: http://orgprints.org/27913/3/27913.pdf |
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