Question:
The pH of very good quality silage shall be in the range of
The pH of very good quality silage shall be in the range of
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Forages rich in soluble carbohydrates (such as maize, sorghum, and oats) are ideal for silage making because they support rapid lactic acid fermentation, achieving the target pH of 5 to
Updated On: Aug 5, 2026
- 5 – 2
- 5 – 2
- 8 – 0
- 2 – 5
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Silage is high-moisture forage preserved through controlled anaerobic fermentation.
Anaerobic bacteria ferment soluble carbohydrates in the forage into organic acids, lowering the pH to preserve the material.
Step 2: Detailed Explanation:
The quality of silage depends on the rapid production of lactic acid by homofermentative lactic acid bacteria.
Lactic acid is a strong organic acid that rapidly lowers the pH, inhibiting the growth of undesirable clostridia, enterobacteria, yeasts, and molds.
Silage quality is classified based on the final pH range achieved:
Very Good Quality Silage: pH range of 5 to 2. This indicates rapid, dominant lactic acid production with minimal butyric acid and ammonia-nitrogen.
Good Quality Silage: pH range of 2 to 5.
Fair Quality Silage: pH range of 5 to 8.
Poor Quality Silage: pH above 8. This indicates insufficient fermentation, clostridial activity, and high butyric acid levels.
Therefore, very good quality silage must have a pH within the range of 5 to
Step 3: Final Answer:
The pH of very good quality silage should be in the range of 5 to
Silage is high-moisture forage preserved through controlled anaerobic fermentation.
Anaerobic bacteria ferment soluble carbohydrates in the forage into organic acids, lowering the pH to preserve the material.
Step 2: Detailed Explanation:
The quality of silage depends on the rapid production of lactic acid by homofermentative lactic acid bacteria.
Lactic acid is a strong organic acid that rapidly lowers the pH, inhibiting the growth of undesirable clostridia, enterobacteria, yeasts, and molds.
Silage quality is classified based on the final pH range achieved:
Very Good Quality Silage: pH range of 5 to 2. This indicates rapid, dominant lactic acid production with minimal butyric acid and ammonia-nitrogen.
Good Quality Silage: pH range of 2 to 5.
Fair Quality Silage: pH range of 5 to 8.
Poor Quality Silage: pH above 8. This indicates insufficient fermentation, clostridial activity, and high butyric acid levels.
Therefore, very good quality silage must have a pH within the range of 5 to
Step 3: Final Answer:
The pH of very good quality silage should be in the range of 5 to
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