About Lesson
- In this small can of one liter capacity (14.3 cm height and 10 cm diameter) are used to indicate evaporation from the cropped field.
- These cans are painted white and covered with 6/20 size mesh. An indicator pointer is fixed at 1.5 cm below the brim.
- When irrigation is given bringing the soil to field capacity, the can is filled up with water to pointer level and ke pt at the crop height.
- Evaporation from can is directly related to crop evapotranspiration.
- Irrigation is scheduled when the water level in the can falls to a predetermined level (equal to the amount of water to be applied at each irrigation) and can is filled again to the pointer level.
Join the conversation