The Soil Test Crop Response (STCR) approach primarily aims to:

Match the following components of Integrated Nutrient Management (INM) with their primary roles:

Column I (Component)	Column II (Primary Role)
1. Biofertilizers	i. Enhancing soil structure and water retention
2. Organic Manures	ii. Fixing atmospheric nitrogen or solubilizing soil phosphorus
3. Chemical Fertilizers	iii. Supplying readily available primary nutrients

Which of the following options correctly matches the components with their roles?

Which biofertilizer is commonly used for leguminous crops to enhance nitrogen fixation?

A key advantage of adopting Integrated Nutrient Management (INM) practices is its ability to:

In the Soil Test Crop Response (STCR) approach, the 'target yield' refers to the:

Consider the following statements regarding Integrated Nutrient Management (INM):
1. INM solely relies on the application of synthetic fertilizers.
2. Green manuring is a practice that enriches soil with organic matter and nutrients.
3. Vermicompost is an organic manure produced by earthworms.
How many of the above statements are correct?

Arrange the following steps involved in the Soil Test Crop Response (STCR) approach in the correct chronological order:
i. Soil sampling and analysis
ii. Fertilizer recommendation based on STCR equations
iii. Field experiments to establish nutrient response curves
iv. Setting a realistic target yield

Which of the following is NOT typically considered an organic manure source in INM?

Integrated Nutrient Management (INM) aims to improve Nutrient Use Efficiency (NUE) primarily by:

Which of the following is a key soil parameter commonly determined during soil testing to assess nutrient status for STCR recommendations?

A farmer observes declining soil fertility despite regular application of only NPK fertilizers. Which INM practice would be most beneficial to address this issue and improve soil health in the long run?

Which of the following crops is widely recognized for its use as a green manure crop?

Match the following biofertilizers with their primary functions:

Column I (Biofertilizer)	Column II (Function)
1. Azotobacter	i. Symbiotic nitrogen fixation in legumes
2. Rhizobium	ii. Non-symbiotic nitrogen fixation in cereals
3. PSB (Phosphate Solubilizing Bacteria)	iii. Making insoluble soil phosphorus available to plants

Which of the following options correctly matches the biofertilizers with their functions?

The STCR equation for fertilizer recommendation often includes a factor for 'nutrient contribution from soil'. What does this factor primarily represent?

The principle of 'feeding the soil, not just the plant' is central to:

Consider the following pairs of INM practices and their associated benefits:
1. Crop rotation: Helps in breaking pest and disease cycles.
2. Use of micronutrients: Primarily reduces the need for major nutrient application.
3. Composting: Converts organic waste into stable humus-like material.
How many of the above pairs are correctly matched?

What is the correct sequence of steps for scientific soil sampling for Soil Test Crop Response (STCR) analysis?
i. Collect samples from various spots in the field.
ii. Air-dry and sieve the composite sample.
iii. Mark representative areas in the field.
iv. Mix sub-samples to form a composite sample.

How does Integrated Nutrient Management (INM) contribute to the economic sustainability of farming?

The coefficient of fertilizer efficiency (CFE) in STCR equations represents the:

Match the following nutrient sources with their categories in INM:

Column I (Nutrient Source)	Column II (Category)
1. Muriate of Potash	i. Biofertilizer
2. Farmyard Manure	ii. Chemical Fertilizer
3. Azospirillum	iii. Organic Manure

Which of the following options correctly matches the nutrient sources with their categories?

One significant environmental benefit of implementing Integrated Nutrient Management (INM) is the:

What is the primary purpose of conducting field experiments and statistical analysis in the development of STCR equations?

Consider the following pairs related to Soil Test Crop Response (STCR):
1. Nutrient requirement for target yield: Amount of nutrient needed to achieve a specific yield.
2. Soil nutrient contribution: The amount of nutrient supplied by applied fertilizers.
3. Fertilizer use efficiency: Proportion of applied nutrient utilized by the crop.
How many of the above pairs are correctly matched?

The practice of growing and plowing under leguminous or non-leguminous crops to enrich the soil is known as: