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Soil conservation --- Water conservation

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Water-supply engineering --- Soil conservation --- Water-supply, Rural --- 628.11 --- 628.12 --- 631.459 --- 631.432.2 --- -Water-supply engineering --- -Soil conservation --- -Conservation of soil --- Erosion control, Soil --- Soil erosion --- Soil erosion control --- Soils --- Agricultural conservation --- Soil management --- Engineering, Water-supply --- Civil engineering --- Engineering --- Hydraulic engineering --- Water --- Rural water-supply --- Sanitation, Rural --- Water sources. Water catchment, collection --- Water-raising, pumping and gravity systems. Pumping stations --- Erosion --- Soil moisture --- Control --- Prevention --- Conservation --- Purification --- AFN North Africa --- North Africa --- desertification --- deserts --- earth sciences --- -Water sources. Water catchment, collection --- 631.432.2 Soil moisture --- 631.459 Erosion --- 628.12 Water-raising, pumping and gravity systems. Pumping stations --- 628.11 Water sources. Water catchment, collection --- -631.432.2 Soil moisture --- Conservation of soil --- Environmental Sciences and Forestry. Water Management --- Water Supply. --- land suitability --- Water resources --- Sahel --- Water-supply engineering - Sahel --- Soil conservation - Sahel --- Water-supply, Rural - Sahel --- HYDROGEOLOGIE --- ECONOMIE EAU, PROBLEMES JURIDIQUES --- GEOMORPHOLOGIE GENERALE --- EROSION DES SOLS --- CYCLE DE L'EAU

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The world’s population is expected to reach 8 billion by 2025 and most of this growth in population will occur in developing countries. To feed the world with such a marked increase in population, a great improvement in food production must be achieved particularly in these countries. To meet this challenge, present agricultural productivity must be increased on the cultivated land. However, in many developing countries, particularly in Africa, reduced soil fertility caused by continuous cropping with low nutrient input and the resultant nutrient mining of soils is a major threat both to food production and to ecosystem viability. As a result of declining soil fertility, together with increasing population pressure, expansion of crop production to marginal lands and forested areas contribute to the destruction of natural ecosystems. Food production is not only a quantitative challenge. Improving the nutrient status of plants provides a further valuable means of enhancing food quality and is of extreme benefit to the health of both plants and humans. There are several excellent examples showing that plants with optimum nutrient status are better adapted to biotic and abiotic stress factors. Because of population pressures, many global food systems are not currently providing enough micronutrients to ensure adequate micronutrient intakes in the human diet. This has resulted in an increasing prevalence of micronutrient deficiencies that now afflicts over three billion people worldwide.

Plants --- Nutrition --- Pflanzenernahrung --- Lebensmittelversorgung --- Nachhaltigkeit --- Kongress --- Plant physiology. --- Nutrition. --- Agriculture. --- Soil conservation. --- Plant Physiology. --- Soil Science & Conservation. --- Soil science. --- Conservation of soil --- Erosion control, Soil --- Soil erosion --- Soil erosion control --- Soils --- Agricultural conservation --- Soil management --- Pedology (Soil science) --- Agriculture --- Earth sciences --- Farming --- Husbandry --- Industrial arts --- Life sciences --- Food supply --- Land use, Rural --- Botany --- Physiology --- Control --- Prevention --- Conservation --- Plant nutrition --- Plant physiology

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Pédologie --- Pédologie. --- Sols --- Formation. --- Classification. --- Végétation --- vegetation --- Soil --- environment --- Sciences du sol --- Soil sciences --- Pédogénèse --- soil genesis --- Classification des sols --- Soil classification --- Eau du sol --- Soil water --- 631.43 --- 631.44 --- 631.47 --- 631.417.2 --- #ABIB:dd.Prof.R.Dudal --- Physical and mechanical properties of soil --- Classification of soils --- Surveying, classification and utilization of land. Soil profiles. Litter. Humus. Topsoil. Subsoil etc. Micropedology --- Humus content --- 631.417.2 Humus content --- 631.47 Surveying, classification and utilization of land. Soil profiles. Litter. Humus. Topsoil. Subsoil etc. Micropedology --- 631.44 Classification of soils --- 631.43 Physical and mechanical properties of soil --- Pédologie --- vegetation. --- Sols - Formation --- Sols - Classification --- SOIL SCIENCE --- SOILS --- SOIL PROPERTIES --- SOIL CLASSIFICATION --- SOIL MANAGEMENT --- SOIL CONSERVATION --- SOIL GENESIS --- TEXTBOOKS --- COMPONENTS --- MAPS