The incomplete factorial treatment arrangement varied by country but included: Four. The overall mean grain yield increase was 0.35 Mg ha-1 and 47% due to application of 22.5 kg ha-1 P. Application of K resulted in a linear negative effect in 2014 and positive effect in 2015 for on-station trials in Niger, but had no effect in Burkina Faso and for on-farm trials in Niger. ees and human livelihoods is particularly apparent in agroforestry parklands, which have been the dominating land use strategy in the Sudano-Sahelian zone for centuries. Université OUAGA I Pr. 2). The present work was carried out mainly to assess how root traits are influenced under water stress in groundnut, whether transgenics can alter root traits, and whether putative changes lead to water extraction differences. At present, climate change, population growth and intensified land use put increasing pressure on trees in the parklands, with potentially detrimental effects on food security.

Under these conditions it is impossible to undertake a detailed climatological analysis. Les donn�ées structurales quantitatives de la v�ég�étation ont montr�é une Grain yields and dry matter production in-creased with increasing plant density. En effet, être aide familial est rare parmi les jeunes urbains (5% du total des emplois).

Use of successional sowing in evaluating cowpea ( Vigna unguiculata) adaptation to drought in the Su... Yield Stability in Relation to Striga Resistance in Cowpea Production in West and Central Africa. Une évolution ultérieure aboutit le plus souvent à des bilabiales.

Mots cl�es : forêt, r�égén�ération, S�en�egal.

Conclusion et application : La mise en evidence de la courbe de variation de temperature en periode froide a Lubumbashi est cruciale pour la mise en place des systemes de chauffage d’etangs peu couteux en vue d’intensifier durablement la pisciculture. Water deficit is a major yield-limiting factor for many crops, and improving the root system has been proposed as a promising breeding strategy, although not in groundnut (Arachis hypogaea L.). Les Differentes dates de semis ont eu un effet significatif (p < 0,0001) sur le taux de transpiration et le potentiel hydrique foliaire des plants. The strong link between tr, Cowpea (Vigna unguiculata (L.) Walp) is important in semi-arid West Africa.

Regionally, no single cultivar was immune from Striga-infestations across locations.
Consequently, the root dry weight and length density of transgenics was higher in layers below 100-cm depth (Exp. ARAMETRES OBSERVES ET TRAITEMENT DES DONNEES, NFLUENCE DE LA DATE DE SEMIS SUR LE COMPORTE, NFLUENCE DU REGIME HYDRIQUE SUR LE COMPORTE, Objectif: L’etude a eu pour objectif d’etudier l’effet des dates de semis au Burkina Faso sur les reponses physiologiques et agronomiques a travers l’evaluation de la transpiration, du potentiel hydrique foliaire et du rendement gousses et grains du Niebe (KVX 61.1).

Cultivar differences in ability to withstand drought damage were observed.

By taking a numerical approach, this index allowed us to have a general and comparative view of the climatology of the original fir ranges in relation to drought problems, and also to simulate evolution easily and compare it with the present situations for each species. La notion d'adaptation à la sécheresse est explicitée en termes de dynamique réactionnelle à la contrainte hydrique.

A parkland landscape in Burkina Faso where the research group has experience and unique field datasets will be used as study area.

nette dominance de cette famille en termes de fr�équence relative, d’importance �écologique et de distribution spatiale. au moyen de deux procédures expérimentales: un test de traduction (à partir du grec familier d’une part et du grec soutenu de l’autre) et un test de jugement de grammaticalité.

Yield was not affected by Mg-S-Zn-B in Burkina Faso but was increased by a mean of 0.085 Mg ha-1 in Niger. Its cultivation is confronted to biotic and abiotic constraints. These indices were very suitable for the identification of drought tolerance in cowpea. Moyennes ± écart-type. These datasets will then be analysed with geo-statistical methods to clarify the relationships between trees, soil moisture and crop production.