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Georg-August Universitat Gottingen (2016)

Exploring niches for short-season grain legumes in semi-arid Eastern Kenya

Sennhenn, Anne

Titre : Exploring niches for short-season grain legumes in semi-arid Eastern Kenya

Auteur : Sennhenn, Anne

Université de soutenance : Georg-August Universitat Gottingen

Grade : ‘Doktor der Agrarwissenschaften’ 2015

Résumé partiel
The integration of legumes in maize based dry land farming systems seems to be promising in order to contribute to the on farm diversity and consequently the diversity of food sources with positive impact on food security and health in particular of the subsistence farmers (Bhat and Karim, 2009 ; Popelka et al., 2004 ; Pretty et al., 2003). Additionally, diversified maize-legume systems are reported to have a positive impact on yields, soil fertility as well as water and nutrient-use-efficiencies (Searle et al., 1981 ; Woomer et al., 2004). Factors which have limited the adoption of legume technologies and the introduction of legume species in farming systems include additional labour requirements, market concerns, and the limited access to quality seed material among others (Pretty et al., 2003). Furthermore, the evaluation in respect to climate variability (prolonged droughts and high rainfall variability) of new drought-tolerant legume germplasm and the eco-physiological understanding of their adaption to environmental stresses need to be enhanced in order to identify suitable strategies for low-input farming systems with the aim to maximize their benefits. Crop modelling software, such as the Agricultural Production Systems sIMulator (APSIM), are powerful tools useful in assessing the potential of certain agricultural activities including new crops and management strategies across a range of different environments in respect to future climate scenarios. APSIM applications include farming system design as well as resource management and can have a strong impact in the exploration and identification of niches for promising legumes in smallholder farming systems of semi-arid Eastern Kenya (Keating et al., 2003).

Mots Clés : legumes ; Eastern Kenya ; APSIM ; risk management

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Page publiée le 4 novembre 2016, mise à jour le 22 septembre 2017