This post contains the material of the class of Water Management in Agricolture. The course is experimental and we are going to convey a lot of information. However, for this reason this page will be constantly under construction until the end of the course.

Anticipations about the course can be found at:

- Ideas for a Course in Water Management for Agricolture

- Strumenti per la gestione dell'acqua dalla pianta al bacino

Image from: K. Beven's The still dynamics |

Methods

Classes will be held in English with the help of slides. Slides will be uploaded in advance on this OSF site.

All the video are actually uploaded to the VIMEO Showcase of the class.

**2022-10-19 - A little of information about the course and Introductions**

**Some generalities about Radiation**

*Radiation is the engine of all the water movement. These lessons give some basic information about what we have to account for when trying to estimate it. Reference to the Plank and Stefan-Boltzmann law is a necessary tribute to radiation physics without which nothing can be understood.*

- Incipit
- The Sun
- Stephan Boltzmann law and short wave radiation (Video2022,VideoGWS2023)
- Long wave radiation (Video2022, VideoGWS2023)
- From The Sun to Earth (Video2022,)
- Coping with Earth surface (Video2022, VideoGWS2023)
- Coping with Rugged Terrain (VideoGWS2023)
- Absorptions (VideoGWS2023)
- Clouds (VideoGWS2023)
- Shadows and Sky view factor (VideoGWS2023)
- Table of Symbols

**2022-11-02 - The basics of terrain analysis**

- The basics of DEM analysis (Vimeo 2022 part I, Vimeo 2022, part II, Vimeo2021, YouTube video 2019,YouTube2020, Sintesi in Italiano 2020)
- Hydrogeomorphology: the derived quantities, drainage directions and contributing areas (Vimeo 2022, Vimeo2021, YouTube video 2019,YouTube2020, Sintesi in Italiano 2020)

**2022-11- 12**- Water in soil and aquifers. Darcy-Buckingham. Hydraulic conductivity. Soil water retention curves (Storyboard2020)

*Once precipitations arrive to the ground surface they either infiltrate or generate runoff. We first state how they infiltrate and, actually how water behave in the soil and in the ground. We talk about the complexity of the Earth surface that contains life and call it, the Critical Zone. To study infiltration we introduce the Darcy and Richards equations of which we explain the characteristics.*

- Soils (Vimeo2022_2)
- Texture and Structure of soils (Vimeo2022_2)
- Vimeo2022, Vimeo2021,YouTube 2017, YouTube2018,YouTube 2019
- Textbook: Freeze and Cherry: Groundwater, section 2.8
- Aquifers (Vimeo2022_2)
- Vimeo2022, YouTube 2019,Vimeo2021
- Textbook: Freeze and Cherry: Groundwater, section 2.7
- Definitions (Vimeo2022_2)

- Darcy-Buckingham law
- Darcy (Vimeo2022_2)
- (Vimeo2022,YouTube 2019, Vimeo 2021)
- Textbook: Freeze and Cherry, Groundwater, section 2.1 and section 2.12
- Buckingham (Vimeo2022_2)

**2022-11-18**

- Soil Water RetentionCurves (Vimeo2022_2)
- SWRC White Board explanation
- On What SWRC depends upon (White Board)
- Vimeo2022, Part II
- (YouTube 2017, YouTube2018,YouTube 2019, Zoom2020, Vimeo2021)
- Complementary reading: Freeze and Cherry, Groundwater, section 2.6

- Hydraulic Conductivity
- Conductivity in unsaturated soils (Vimeo2022_2)
- Saturated conductivity (Vimeo2022_2)
- Textbook: Freeze and Cherry, Groundwater, section 2.3 and section 2.4
- Query and answers on previous material on quantitative soil water analysis

**-2022 - 11- 19**

**The Richardson-Richards equation**(Storyboard 2020, Storyboard2022_2, Storyboard2022_2_2)

- Just the divergence Theorem (Vimeo2022_2)
- (YouTube2018,YouTube2019, Zoom2020,Vimeo2021,Vimeo2022)
- Some clarifications about Richards equation on the Whiteboards (I and II)
- Complementary reading: Freeze and Cherry, Groundwater, section 2.6

- The groundwater equation
- (YouTube2019,Vimeo 2021,Vimeo2022)
- Textbook: Freeze and Cherry, Groundwater (Section 2.9 and section 2.11)

**- Darcy-Buckingham law, Soil Water Retention Curves, Hydraulic Conductivity etc**

*A consistent part of root zone and surface water evaporates and returns to the atmosphere to eventually form clouds and precipitation again. The process follows quite complicate routes and is different when happening from liquid surfaces, soil or vegetation (and BTW animals). In this group of lectures we try to figure out the physical mechanisms that act in the process and give some hint on methods to estimate evaporation and transpiration with physically based models.*

**2022 - 12- 01**

- The Clausius-Clapeyron equation (Vimeo2022_2)
- The Daltonian law of transport of vapor (Vimeo2022_2)
- The turbulent transport of thermal energy (Vimeo2022_2, Vimeo2022 _2 II Part)
- The Energy Budget (Vimeo2022_2)
- All the equations together (Vimeo2022_2)
- The solutions of the equations (Vimeo2022_2)

**2022 - 12- 07**-

**Differentiation evaporation and transpiration**

- The bare soil evaporation (Vimeo2022_2)
- Transpiration (Vimeo2022_2)
- The hydraulic conductivity in plants (Vimeo2022_2)
- Stresses in transpiration and evaporation (Vimeo2022_2)
- Some runs on transpiration (Vimeo2022_2)

**2022-12-14 - A very little of hydraulics (with an eye to irrigation) in two storyboards**

*To irrigate well a little of hydraulic notions are needed. They re reduced here to the bare-bone.*

- When it is necessary to irrigate

(and some simple estimations) - Dissipation of hydraulic head

**2022-12-15 - Irrigation**

*When irrigating ? Which infrastructures have to be implemented ? How to command and control irrigation ? Using the irrigation system smartly.*

**2022-01-11**

- Why and when irrigating (Vimeo2022)
- What is needed for irrigating (Vimeo2022)
- Contemporary irrigation means control (Vimeo2022)
- Controlling the stress of cultivars (Vimeo2022)
- Irrigation in Italy (Vimeo2022)

**2023-01-19**

**Formulas**

A bare-bone synthesis of the formulas used in the course.

A bare-bone synthesis of the formulas used in the course.

**Questions for the final exam (2021-01-25)**

**Web Resources on Irrigation systems**

**References**

A. Capra and B. Scicolone - Progettazione e gestione degli impianti di irrigazione -Edagricole

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