Question

From the following who was the father of soil testing technique:

• A. M. L. Truog
• B. James Stuart
• C. S. N. Winogradsky
• D. Milne

Hint:

Associate Truog with the "Truog Phosphorus Extraction Method," which was one of the earliest standardized soil nutrient extraction techniques.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Historical milestones and pioneers in soil science are frequently tested in agricultural exams.
Identifying the individual who developed systematic chemical tests to estimate soil nutrient status is key.

Step 2: Detailed Explanation:
Emil Truog (commonly referred to as M. L. Truog or E. Truog in historical literature) was an eminent soil scientist at the University of Wisconsin.
He is widely recognized as the father of soil testing techniques because he developed the first practical and widely adopted chemical tests to measure active soil acidity (pH) and available phosphorus in the 1930s.
Let us look at the other names mentioned:
1. S. N. Winogradsky: Renowned as the "Father of Soil Microbiology" for discovering autotrophy, nitrification, and nitrogen-fixing bacteria.
2. Milne: Associated with the concept of the soil "catena" (repeating soil patterns along a slope).
3. James Stuart: Not associated with pioneer soil chemistry works.
Thus, M. L. Truog is the correct pioneer of soil testing.

Step 3: Final Answer:
Therefore, the father of soil testing technique is M. L. Truog.