Question

Calculate the plant population of sugarcane in 1 ha area, if planted in paired row spacing of 60/120 cm and the number of canes in 4-metre row length is 50.

• A. 1,35,000
• B. 1,38,888
• C. 1,39,888
• D. 1,40,888

Hint:

Sugarcane planting:
- Paired row spacing: 60/120 cm.
- Plant population = Canes per meter × Total row length.
- Average row spacing = (60+120)/2 = 90 cm.

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
This question tests the calculation of sugarcane plant population in a paired row system.

Step 2: Key Formula or Approach:
Paired row spacing: 60/120 cm means rows are paired at 60 cm and the gap between pairs is 120 cm.
The average row spacing is (60 + 120)/2 = 90 cm = 0.9 m.
Plant population per hectare = (Number of canes per meter length) × (Total row length per hectare).

Step 3: Detailed Explanation:
Given:
- 50 canes in 4-meter row length → 50/4 = 12.5 canes per meter.
- Average row spacing = 0.9 m.
- Row length per hectare = 10,000 m² 0.9 m = 11,111.11 m.
- Total canes per hectare = 12.5 × 11,111.11 = 1,38,888.
Thus, the plant population is 1,38,888.
Final Answer:
Thus, the plant population is 1,38,888, which corresponds to option (B).
[0.5cm]