Which one of the following is not an essential condition to grow maize ?

Options

A. Humidity
B. Low temperature
C. Rainfall
D. High temperature

Explanation

To determine which condition is not essential for growing maize, we can analyze the requirements for maize growth step by step.

### Step-by-Step Solution:

1. **Identify the Conditions for Maize Growth**:
- Maize is a crop that typically requires specific environmental conditions to thrive. The common conditions include humidity, temperature, and rainfall.

2. **Assess Humidity**:
- Humidity is important for maize as it helps in the process of photosynthesis and overall plant health. Therefore, humidity is an essential condition for growing maize.

3. **Evaluate Rainfall**:
- Rainfall is crucial for providing the necessary water for maize plants. Adequate moisture is vital for seed germination and growth. Thus, rainfall is also an essential condition.

4. **Consider Temperature**:
- Maize is classified as a C4 plant, which means it thrives in warm temperatures. The ideal temperature for maize growth is above 30 degrees Celsius. High temperatures promote better photosynthesis and yield.

5. **Differentiate Between Low and High Temperature**:
- Since maize prefers high temperatures, low temperatures are not conducive to its growth. Low temperatures can hinder the growth process and are not necessary for maize cultivation.

6. **Conclusion**:
- After analyzing the conditions, we conclude that low temperature is not an essential condition for growing maize. The essential conditions for maize growth include humidity, rainfall, and high temperature.

### Final Answer:
**Low temperature is not an essential condition to grow maize.**

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