Agrinomy
Modern agronomy. Made practical.
Learning pathway

Water, Roots & Irrigation

Managing water movement, root access and the crop root-zone environment.

Intermediate 13 lessons 1–1.5 hours

Explore how water moves through soils, substrates and plants, and how irrigation, salinity, oxygen and atmospheric demand influence crop performance.

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Course lessons

1

Water quality

The starting point for understanding irrigation and nutrient supply.

2

Bicarbonate

How bicarbonate raises alkalinity and influences root-zone pH.

3

pH

How irrigation water and substrate chemistry influence nutrient access.

4

EC & TDS

Understanding dissolved salts, feed strength and root-zone EC.

5

Cation Exchange Capacity (CEC)

How the root medium retains water-associated nutrient ions.

6

Root-zone oxygen diffusion

Why roots require oxygen and how saturation restricts respiration.

7

Dry-down curves

Using changes in water content to understand crop demand and irrigation timing.

8

Water availability

Why total water content does not always equal plant-available water.

Coming soon
9

Root water uptake

How roots acquire water and what limits uptake under crop conditions.

Coming soon
10

Osmotic stress

How dissolved salts make water harder for roots to absorb.

11

Salinity–calcium interaction

How salinity affects calcium transport, growth and crop quality.

12

Transpiration

How water movement through the plant supports cooling and nutrient transport.

13

Vapour Pressure Deficit (VPD)

How atmospheric demand influences transpiration and irrigation requirement.

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