Regarding the replacement of species, which would become necessary in the case of climatic change, with the exceptions of A. nordmanniana which has already been used and of for A. nebrodensis, these firs could be an alternative to the regression of more hygrophilous species, especially in zones to the north of their present ranges. MOTS-CLES. In the original ranges of these species climatic data is rare and very incomplete. C'est vrai aussi pour la moitié des jeunes femmes. The root diameter increased below 60 cm in both treatments. Ein im nördlichen Teil der Balkan-Halbinsel beheimateter, wuchskräftiger und wirtschaftlich wichtiger Waldbaum, der in einigen morphologischen Merkmalen zwischen A. alba und A. cephalonica steht und dessen taxonomische Situation uneinheitlich beurteilt wird.

— Sahel; Verwoestijning; Droogte; Antropische druk; Milieu-aantas-ting. In the expected climatic change scenario (with increased temperatures and water deficits) related to greenhouse effect phenomena, questions are being raised concerning the migration of the potential range of forest specie (contraction in the south and at lower altitudes, extension towards the north and higher altitudes) and the consequences on silviculture. Methodologie et resultats: L’effet de differentes dates de semis du niebe sur sa physiologie a ete etudie selon un dispositif en blocs complets randomises a quatre repetitions. Conclusion et application: Les deux dates de semis, le 26 mars et le 10 avril sont des periodes qui permettent un developpement optimal de la plante en culture de contre-saison chaude avec d’assez bon rendements.

Le contenu relatif en eau (RWC), la croissance en hauteur et la production de biomasse sèche aérienne et racinaire ont été suivis sur des plants des différents traitements pendant six mois.

préalablement débarrassée de la terre par lavage da, Tableau 4. Improved knowledge about tree-water- crop interactions at landscape scale is critical to developing management strategies intended to promote food security. Ce numéro d’Innovations Agronomiques rassemble les présentations du colloque « Adaptation des forêts méditerranéennes aux changements climatiques » qui s'est tenu en Avignon le 20 novembre 2015. » « Toute opération de pré collecte, de collecte, de stockage, de tri, de transport, de mise en décharge, de traitement, de valorisation, de recyclage et d'élimination des déchets y compris le contrôle de ces opérations ainsi que la surveillance des sites de décharges pendant la période de leur exploitation ou après leur fermeture. These results suggest that response to drought by deep root growth, rather than a conservative soil water pattern, seems to be important for lowland rice. The root diameter was unchanged under WS treatment, except a slight increase in the 60-90-cm layer. Under these conditions it is impossible to undertake a detailed climatological analysis.

Forstlich wurde die Art außerhalb ihres natürlichen Areals selten angebaut; bewärt hat sie sich als rel. These are further aggravated by the ever changing global climate and the concomitant effects such as erratic rainfall pattern.

Thus, two varieties of cowpea­ KN1 and KVX 61.1 ­were cultivated in pots of six (06) liters in real medium, during the hot period of the year. To answer these questions, information about climatic changes and the ecophysiology of the forest species concerned is required. V1, détournés de la production de grains. The zone situated between low-latitude and middle-latitude will be called "supratropical" (rather than subtropical). 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. Farmers in Tiéfora placed statistically significant importance on seed colour and plant type, while farmers in Tougouri did not, and for these selection criteria, there were only slight differences between genders in both areas.

Two field trials were conducted in 1998 and 1999 wet seasons to determine the effect of three dates of planting (10,20 and 30 June) and four NPK levels (0:0:0, 120:18:33, 150:26:50 and 180:35:66 kg NPK/ha) on the yield and yield components (number of grains/cob, 100-grain weight, cob weight/plant, cob weight/ha, grain weight/plant and grain weight/ha) of quality protein maize. In the expected climatic change scenario (with increased temperatures and water deficits) related to greenhouse effect phenomena, questions are being raised concerning the migration of the potential range of forest specie (contraction in the south and at lower altitudes, extension towards the north and higher altitudes) and the consequences on silviculture. De meme, l'etude des modalites de debourrement montre des differences significatives entre provenances. Ministère de l'économie et des finances 2003. This is highly desirable for the identification of gene sources for further improvement of cowpea for drought tolerance or in combination with other traits.

Universite Abdo, pots and field for drought tolerance.