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

The targeted yield concept is a fertilizer recommendation method built from soil test crop response data, aimed at reaching a fixed, chosen yield rather than just applying a standard dose to every field.

1. S.P. Raychaudhuri: A well known name in Indian soil survey and classification work, not linked with this yield targeting model.
2. T.D. Biswas: Known for soil fertility and soil chemistry writing and teaching, not for originating this concept.
3. B. Ramamoorthy: Along with his team at IARI, he built the targeted yield equations in 1967 from soil test crop response trials, connecting soil nutrient supply, crop nutrient uptake and fertilizer efficiency into one formula.
4. N.P. Datta: Contributed to soil fertility research generally, but is not credited with this particular concept.

Since the targeted yield model is directly credited to B. Ramamoorthy's 1967 work, he is the correct answer.

Let's summarize:

• The targeted yield concept sets fertilizer doses to reach a chosen yield goal, using soil test crop response data.
• It was developed by B. Ramamoorthy in 1967 at IARI.

So the answer is B. Ramamoorthy, option 3.