40.6.1. Field Tests

Try these first

1. 1.

   What does an EC meter measure?

   Hint

   Think about how well salts dissolve in water.

2. 2.

   Why is pH measurement important in irrigation?

   Hint

   Consider how acidity affects nutrients.

3. 3.

   What does an EC meter primarily measure?

   • pH levels
   • Chloride content
   • Salinity

   Hint

   Think about how salinity relates to dissolved salts.

4. 4.

   True or False: A pH level of 7 is neutral.

   • True
   • False

   Hint

   Recall what pH levels mean in terms of acidity and alkalinity.

5. 5.

   A farmer tests his irrigation water and finds an EC reading of 1.5 dS/m. What are the implications for crop choice, and what steps could he take if the levels are not suitable?

   Hint

   Think about crop tolerance levels.

6. 6.

   After using a portable test kit, a farmer discovers a high nitrate level in his irrigation water. Explain the possible impacts on his crops and what actions he should consider.

   Hint

   Reflect on how nutrient excess can affect planting strategies.