Silage Monitor: Fermentation Temperature Tracking

Silage quality depends on proper fermentation controlled by temperature and oxygen exclusion. Over-heating indicates aerobic spoilage that can render the batch toxic. Temperature monitoring saves fodder worth lakhs.

Silage Fermentation Science

Lactic acid bacteria convert sugars to lactic acid under anaerobic conditions, preserving forage at pH 3.8-4.5. Proper fermentation requires rapid oxygen exclusion, adequate sugar content, and correct moisture (60-70%).

Temperature as Quality Indicator

First 24-48 hours: rises to 30-40C (aerobic bacteria consuming residual oxygen). Then cools to near ambient as anaerobic phase begins. If >45C or fails to cool after 48h, air leak causing aerobic spoilage.

Building the Monitor

DS18B20 probes on PVC pipes at 0.5, 1.0, 1.5m depths inserted before sealing. Arduino logs every 15 min. Alerts when any probe exceeds 45C or fails to show cooling trend after 48 hours.

Probe Placement

Vertical PVC pipes at 3-4 points across pit. Route cables along pit edge. Probes withstand acidic conditions (pH 3.8-4.5) of good silage. Seal cable entry points to prevent air ingress.

Spoilage Detection

Localised temperature rise indicates air pocket. Map hot zone using multi-probe data. Remove affected silage and reseal. Catch within 24 hours to save remaining silage.

Economic Impact

Average dairy cow eats 25-30kg silage daily. Spoiled silage causes reduced intake, mastitis risk, and milk yield drops. Prevention worth Rs 50,000+ per 100-tonne pit.

Frequently Asked Questions

Good fermentation temperature?

Rises to 30-40C first 48h then cools to near ambient. Above 45C = air leak.

Install probes how?

DS18B20 on PVC pipes at 0.5, 1.0, 1.5m depths before sealing pit.

Salvage overheated silage?

If caught within 24h, remove hot zone (all above 50C). Once mouldy, discard that section.

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