Learning Outcomes
Upon successful completion of this course, students will:
1. understand the rhizosphere environment
2. learn how the root system develops under soil stress conditions
3. be able to solve root system problems related to soil stress
4. understand interactions between rhizoplane and soil particles
5. understand the effects of soil mechanical and physical properties on root growth and function
6. appreciate the interactions between the root system and soil properties.
7. know soil parts and their functions
8. be able to appreciate the importance of soil pore size for water retention
9. be able to understand the effects of soil texture and structure in water
10. understand the function of the soi-water system for plant growth
11. be able to measure soil infiltration and calculate the parameters of infiltration
12.be able to appreciate the irrigation parameters using functions
13. be able to calculate crop evapotranspiration
14. be able to calculate crop water needs for complete or deficit irrigation
15.be able to calculate irrigation parameters and programming of irrigation with the assistance of soil water balance
Course Content (Syllabus)
The soil environment. Development, structure and function of the root system. Soil particle surface, rhizosphere and rhizoplane. Water relationships in the plant-soil system. Simple and combined effects of physical and mechanical soil properties (structure, mechanical impedance, soil water, air and temperature) in root growth and function. Managing soils for better root growth. Root effects on soil properties and the soil environment. Simulation of nutrient flow to the roots. Uptake and accumulation of heavy metals in the root system. Microbial activity in the rhizosphere.
The soil-plant-atmosphere system. Soil profile. Soil as a tripartite pore system. Relation of mass-volume of the three soil phases. Water properties in relation to pore means. Water sorption from soil solids. Angle of contact between water and soil solid phase. Capillary movement. Texture and specific soil surface. Soil taxonomy. Properties of soil colloids. Soil structure and aggregation. Effects of structural properties to plant growth. Management of soil environment for optimum root system development.
Soil moisture. Methods of determining soil moisture. Soil water potential. Methods of measuring soil water potential. Characterization curves of soil water retention. Soil pore distribution. Effects of soil texture and structure in soil water retention and water availability for plant growth. Movement and re-distribution of soil water. Soil water infiltration, measurement and calculation. Irrigation parameters and mathematical functions. Evapotranspiration and its parameters and measurement. Crop yield in relation to water infiltration. Management of soil salinity through irrigation.
Keywords
Rhizosphere, rhizoplane, water uptake, biochemical plant-soil interactions, heavy metals, soil microorganisms, mechanical impedance, evapotranspilation, irrigation
Course Bibliography (Eudoxus)
Εδαφολογία Nyle C. Brady and Ray R. Weil (Γενική Επιμέλεια Ελληνικής Εκδόσης κ. Οιχαλιώτης, Δ. Γασπαράτος, Ν. Μισοπολινός)
Παναγιωτόπουλος, Κ.Π., 2009. Εδαφοφυσική, Εκδόσεις Γαρταγάνη, Θεσσαλονίκη (κωδικός Εύδοξος: 2297)
Παπαζαφείρίου, Ζ.Γ., 1999. "Οι Ανάγκες σε Νερό των Καλλιεργειών", Εκδόσεις Ζήτη, Θεσσαλονίκη (κωδικός Εύδοξος: 11312)
Παπαμιχαήλ, Δ.Μ. και Μπαμπατζιμόπουλος, Χ.Σ., 2014. Εφαρμοσμένη Γεωργική Υδραυλική, Εκδόσεις Ζήτη, 550 σελ. (κωδικός Εύδοξος: 41960118)