Question

Partial pinching of crown to improve fruit size and shape of pineapple is done at

• A. 25 days after fruit set
• B. 35 days after fruit set
• C. 45 days after fruit set
• D. 55 days after fruit set

Hint:

Remember pineapple cultivation:
- Flower induction: Ethrel 25 ppm (before flowering)
- Fruit development: 4-6 months to maturity
- Pinching time: 35 days after fruit set
- Harvest: When 1/3 of fruit changes color
- Uses: Fresh consumption, juice, canning
Partial pinching improves fruit quality and marketability.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
This question tests knowledge of pineapple cultivation practices.

Step 2: Detailed Explanation:
In pineapple cultivation, partial pinching of the crown (top leaves) is done to improve fruit size and shape.
This practice is performed at 35 days after fruit set.
Why at 35 days?
- The fruit is at the critical growth stage.
- Removing the crown tip redirects nutrients to the fruit.
- Results in larger, more uniform fruits.
- Improves marketable quality.
Other pineapple practices:
- Flower induction: Using Ethrel or calcium carbide to induce flowering.
- Fruit covering: To prevent sunburn and bird damage.
- Pinching: Removing suckers to focus energy on fruit.
Thus, partial pinching at 35 days after fruit set is the recommended practice.

Step 3: Final Answer:
Thus, partial pinching of crown to improve fruit size and shape is done at 35 days after fruit set, which corresponds to option (B).
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