Wild bees, flies, wasps, butterflies and other wild pollinators provide 85% of the pollination services, but in such landscape they don’t find nectar and pollen to cover their needs during the whole year. They also do not have nesting material and...
Les abeilles sauvages, les mouches, les papillons et d’autres pollinisateurs assurent 85% des services de pollinisation. Mais dans ce paysage, ils ne trouvent pas de nectar ni de pollen pour couvrir leurs besoins pendant toute l'année. Ils n'ont pas...
يساهم النحل البري، نحل العسل، الدبابير، الفراشات و الملقحات الحشرية البرية الأخرى في توفير 85 % من خدمة التلقيح. لكن في مثل هذا المنظر، تفتقد هذه الأخيرة إلى الرحيق و حبوب اللقاح طيلة السنة . كما تفتقد أدوات و أماكن التعشيش، و مواقع الإيواء ضد الرياح...
In Ethiopia, one of the poorest countries
in the world, soil erosion by water
contributes significantly to food insecurity
of rural households and represents
a real threat to sustainability of the existing
subsistence agriculture (Hurni 1993...
This paper investigates the impacts of the main primary production factors (e.g. seed, nitrogen, phosphorus, etc.), on the total production of the main crops produced in Egypt (cotton, berseem, maize, rice and wheat), with special emphasis on the...
The objective of this paper is to identify farmers’ strategies to adapt to groundwater shortage in vulnerable arid areas of south Tunisia.
In the selected area, the potential of rainfed agriculture is very limited and groundwater is the only source...
L’objectif de cet article est d’analyser l’efficacité technique et d’usage de l’eau d’irrigation dans le périmètre irrigué Jijel-Taher dans l’Est de l’Algérie, ainsi que l’effet de différents niveaux de quotas d’eau sur l’amélioration de ces...
