Question

The targeted yield concept for soil fertility evaluation was proposed by:

• A. S.P. Raychaudhuri
• B. T.D. Biswas
• C. B. Ramamoorthy
• D. N.P. Datta

Hint:

Recall the scientist behind the soil test crop response based fertilizer model from IARI, 1967.

Answer 1

The Correct Option is C

Step 1: Understanding the Question:
We need to name the soil scientist credited with developing the targeted yield concept, an approach used to work out fertilizer doses for a chosen yield goal.

Step 2: Key Formula or Approach:
The targeted yield concept links the nutrient needed by the crop, the nutrient already supplied by the soil, and the efficiency of the fertilizer used, so a farmer can plan a fertilizer dose for a specific, pre decided yield target rather than a generalized blanket dose.

Step 3: Detailed Explanation:
This approach was worked out by B. Ramamoorthy along with his co-workers at the Indian Agricultural Research Institute in 1967, using data from soil test crop response studies. It became one of the most widely used fertilizer recommendation models in Indian soil testing programs.
S.P. Raychaudhuri is known for his broader contributions to Indian soil survey and soil science history, not for this specific yield model.
T.D. Biswas is known as a soil fertility and soil chemistry textbook author, not as the originator of this concept.
N.P. Datta's name is not associated with developing the targeted yield model either.

Step 4: Final Answer:
The targeted yield concept was proposed by B. Ramamoorthy, so option 3 is correct.