UNIT 3 – WATER MANAGEMENT

1. Rainwater harvesting

Rainwater harvesting means collecting and storing rainwater for later use.

Farmers can use:

Water tanks to collect water from roofs or greenhouses

Contour bunds (small soil barriers) on slopes to slow water and help it enter the soil

Learners can explain that rainwater harvesting:

Reduces groundwater use

Supports farms during dry seasons

Prevents soil erosion by slowing water flow

2. Drip irrigation  

Drip irrigation gives water directly to plant roots through small pipes and holes.

Water comes out slowly, drop by drop.

Learners can describe that drip irrigation:

Reduces water waste

Prevents evaporation

Avoids watering empty areas

Saves water and costs

3. Water-saving scheduling

Water-saving scheduling means irrigating only when needed.

Farmers can:

Water early morning or evening to reduce evaporation

Plan irrigation based on plant needs

Some farmers use soil moisture sensors to measure how much water is in the soil.

Learners can analyse that sensors:

Prevent unnecessary irrigation

Protect plant roots

Reduce energy and water use

Unit Takeaway:

This unit helps learners identify key water-saving methods, describe how each technique works, and explain how smart irrigation reduces waste. It prepares them to apply practical water-management strategies on small farms.