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eLibrary > BS ISO 24120-1:2022 Agricultural irrigation equipment. Guideline on the implementation of pressurized irrigation systems - General principles of irrigation >

BS ISO 24120-1:2022 Agricultural irrigation equipment. Guideline on the implementation of pressurized irrigation systems - General principles of irrigation, 2022

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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Water management [Go to Page]
4.1 Soil-water relationship [Go to Page]
4.1.1 General
4.1.2 Solid particles and porosity
4.1.3 Soil water
4.1.4 Determination of amount of water in a soil layer
4.1.5 Water retention in soils
4.1.6 Soil water potential and movement of water in the soil
4.1.7 Water distribution in the soil
4.1.8 Distribution of salts in the irrigated volume
4.1.9 Salt concentration as a function of soil water content
4.1.10 Nutrients distribution
4.1.11 Root distribution
4.2 Water sources [Go to Page]
4.2.1 Sources
4.2.2 Effects on soil and crops main parameters in relation to chemical/biological quality of the irrigation water
4.2.3 Effects on filters and irrigation emitters in relation to chemical and physical parameters
4.3 Water distribution network: main, sub-main, distribution pipes
5 Pressurized irrigation design [Go to Page]
5.1 General
5.2 Data collection [Go to Page]
5.2.1 Soil characteristics
5.2.2 Surface topography
5.2.3 Climate
5.2.4 Water source and quality
5.2.5 Crops characteristics (orchards, field crops, vegetables)
5.2.6 Local water use regulations
6 Calculating irrigation scheduling [Go to Page]
6.1 General
6.2 Soil — Water reservoir [Go to Page]
6.2.1 General
6.2.2 Calculation of water available for the crop in the root zone
6.2.3 Calculation of the management allowable deficit
6.2.4 Net irrigation depth (NID)
6.2.5 Gross irrigation depth (GID)
6.2.6 Leaching
6.3 Crop water requirements
6.4 Irrigation interval
Annex A (informative) Example of soil data
Annex B (informative) Methods for the determination of the wetted volume (bulb) dimensions
Annex C (informative) Salt tolerance of selected crops
Bibliography [Go to Page]

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