The condition Stem Crack of Celery is due to deficiency of

Options

A. chlorine
B. boron
C. manganese
D. iron

Answer

To determine the cause of the condition known as "Stem Crack" in celery, we need to analyze the potential nutrient deficiencies listed in the question. Here’s a step-by-step breakdown of the solution:

### Step 1: Identify the Nutrients Listed
The question provides four options: Chlorine, Boron, Magnesium, and Iron. We need to evaluate each one to see which is linked to stem crack in celery.

### Step 2: Evaluate Each Nutrient
1. **Chlorine**: Chlorine is not typically associated with stem crack. It is more related to osmotic regulation and photosynthesis. Therefore, it is not the correct answer.

2. **Boron**: Boron is a micronutrient that is crucial for plant growth and development. It is known to be involved in cell wall formation and reproductive processes. A deficiency in boron can lead to various growth issues, including stem crack. This makes boron a likely candidate for the correct answer.

3. **Magnesium**: Magnesium is essential for chlorophyll production. A deficiency in magnesium usually results in chlorosis (yellowing of leaves), not stem crack. Thus, this option is incorrect.

4. **Iron**: Iron is important for chlorophyll synthesis and is involved in various enzymatic processes. Its deficiency leads to intervenal chlorosis, which is characterized by yellowing between the veins of leaves. This does not relate to stem crack, making it an incorrect option.

### Step 3: Conclusion
After evaluating all the options, it is clear that the deficiency that leads to the condition of stem crack in celery is due to a lack of **Boron**. Therefore, the correct answer is option 2: Boron.

### Final Answer
The condition "Stem Crack" of celery is due to the deficiency of **Boron**.

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