135 mm
165 mm
190 mm
215 mm
Answer is Right!
Answer is Wrong!
The optimum depth of kor watering for rice is 165 mm. This is because rice is a water-intensive crop and requires a lot of water to grow. The depth of water should be sufficient to cover the entire root zone of the plant, but not so deep that it drowns the plant.
Option A: 135 mm is too shallow and will not provide enough water for the plant.
Option B: 165 mm is the optimum depth of water for rice.
Option C: 190 mm is too deep and may drown the plant.
Option D: 215 mm is too deep and may drown the plant.