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

Options

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

Explanation

To determine which condition is not essential for growing maize, we need to analyze the requirements of maize cultivation. Here’s a step-by-step solution:

### Step 1: Understand the climatic requirements for maize
Maize (corn) is a plant that thrives in warm climates. It is typically grown in tropical and subtropical regions where temperatures are higher.

**Hint:** Consider the typical climate where maize is cultivated.

### Step 2: Analyze the temperature needs
Maize grows best in temperatures ranging from 18°C to 27°C during the day. At night, it can tolerate temperatures as low as 14°C to 15°C, but it does not thrive in cold conditions.

**Hint:** Think about the temperature range that maize prefers for optimal growth.

### Step 3: Evaluate the humidity requirement
Humidity is also important for maize growth, as it affects the plant's ability to transpire and absorb nutrients. Adequate humidity levels help maize plants to grow effectively.

**Hint:** Reflect on how humidity impacts plant growth and development.

### Step 4: Consider the rainfall necessity
Rainfall is essential for the growth of maize, as it requires water for germination and overall growth. Insufficient rainfall can hinder the growth of maize plants.

**Hint:** Recall the importance of water for all plants, including maize.

### Step 5: Identify the non-essential condition
Among the options provided:
1. High temperature - essential for maize growth.
2. Humidity - essential for maize growth.
3. Low temperature - not essential (maize does not grow well in low temperatures).
4. Rainfall - essential for maize growth.

From this analysis, we conclude that **low temperature** is the condition that is not essential for growing maize.

### Final Answer:
The condition that is not essential to grow maize is **low temperature** (Option 3).

---