33.Soil salinity assessment: methods and interpretation of ... - FTP FAO
Principles of soil and soil-paste electrical conductivities ..... conserving water and protecting water quality from excessive salinization (a suitable means .... The determination of EC generally involves the physical measurement of the materials' ...
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34.5. Technical Guide: Agricultural Land Conservation
3.1 Physical and chemical methodology of agricultural land conservation ··· 5-18 ... 3.2 Agricultural land conservation methods in the Sahel region···················· 5-28 .... The conservation of agricultural land, in short, means conserving soil and water. ... Soil conservation is linked to the maintenance of the tolerance of crop ...
35.Sustainable practices to limit soil erosion: a review and discussion
history of soil conservation practices is given and then these techniques are examined in ... soil and water quality to the fore, with important impli- ... The lack of uptake by farmers of methods to limit ..... three of the following general principles: no mechanical soil .... “While financial, physical, and natural capital assets are ...
36.AGR 101. Introductory Agriculture, Principles of Agronomy and Soil ...
like solar energy, carbon dioxide, water and nutrients in soil to economic products in the form of human or ... Agronomy deals with methods which provide favourable environment to higher crop productivity. ... The physical and mental skills are involved in agriculture. ...... Adoption of soil and water conservation practices ...
PRINCIPLES OF AGRONOMY AND SOIL MANAGEMENT
37.POLYACRYLAMIDE IN AGRICULTURE AND ENVIRONMENTAL ...
than traditional conservation measures, has resulted in rapid adoption. About 800000 ha of .... Water-soluble polymeric conditioners improved soil physical properties, ... requirements remain governed by principles of evapotranspiration. The poly- .... To ensure environmental safety, this application method was developed ...
38.Document - Soil and Water Conservation Society
While the principles governing runoff and erosion are the same around the world, ... Physical processes essential to the understanding of watershed systems are identified in .... methods increase infiltration through minimal soil disturbance and ...
39.Economics of Soil Conservation Adoption in High-Rainfall Areas of the
Literature on Soil and Water Conservation Technologies … .... advanced throughout the developing world include structural methods, such as soil and stone .... technical soundness and environmental factors have provided the only guiding principles for ... 1980s and consequently failed to maintain the physical structures ...
40.Land Use, Land Cover and Soil Sciences
Environmental Challenges: Soil Quality And Sustainable Management. 3.2. Nitrate .... Dryland Management Principles. 5.1. ... Changing Agricultural Methods And Policies. 2.5. ... David William Sanders, World Association of Soil and Water Conservation, Bristol, England. 1. ... Physical (Hard) Engineering Measures. 8.