A gardener has to induce flowering in his mango orchard to get higher and better fruits yields. Which of the following chemicals can be used by the gardener to promote flowering in his mango orchard ?

Options

A. `GA_(3)`
B. 2, 4 - D
C. Kinetin
D. Ethephon

Answer

To solve the question regarding which chemical can be used by a gardener to induce flowering in a mango orchard, we will analyze the options provided and identify the correct one.

### Step-by-Step Solution:

1. **Understand the Objective**: The gardener wants to induce flowering in mango trees to enhance fruit yield. Therefore, we need to identify a chemical that promotes flowering.

2. **Evaluate the Options**:
- **Option A: GA3 (Gibberellic Acid)**: This is a plant growth regulator known to promote stem elongation, seed germination, and flowering in some plants. It is often used to enhance fruit size and quality but is not primarily known for inducing flowering in mangoes.

- **Option B: 2,4-D**: This is a synthetic auxin used primarily as a herbicide. While it can affect plant growth, it is not used for inducing flowering.

- **Option C: Chitinase**: This is an enzyme that breaks down chitin, which is not directly related to flowering induction.

- **Option D: Itifon**: This is a growth regulator specifically known to promote flowering and fruiting in various plants, including mangoes. It helps in the induction of flowering and improves fruit quality.

3. **Identify the Correct Answer**: Based on the analysis of the options, **Option D: Itifon** is the correct choice as it is specifically used to promote flowering in mango orchards.

### Final Answer:
The gardener can use **Itifon** to promote flowering in his mango orchard.

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