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Insect control and preservation of bulk cereals and co-products in a CO₂-rich atmosphere.

Scientific summary by Francis FLEURAT-LESSARD.

Knowledge of post-harvest insect pests.

Insect classification.Insect life cycle.Insect pests of cereals.Insect pests of legumes.Insect pests of oilseeds.

Good grain preservation practices for long-term storage.

General principles.Balance between Relative Humidity (RH) and Water Content (WC) of the grain.Critical humidity and temperature thresholds for seed conservation.Predict storage time without risk of quality loss.

Good grain preservation practices for long-term storage.

Preventive methods.Curative methods.

Protection of grain, seed and seed stocks against insect infestation.

Simple hermetic storage.Partial vacuum.Inert gas (Modified Atmosphere with carbon dioxide or nitrous oxide).Factors determining the insecticidal efficacy of inerting.

CO₂ inerting: favorable effects on Quality preservation.

Preservation of seed germination capacity over time.Reduced post-harvest grain cooling requirements.Other effects (on microorganisms and other qualitative criteria).Benefits of hermetic or inert gas preservation.

Other aspects of inerting to consider in practice.

CO₂ adsorption phenomenon on the grain.Increased tolerance of insects to oxygen depletion.

Miscellanious

Evolution of soybean seed germination capacity.Oilseed conservation in hermetic enclosures.Enhancing Onion Seed Conservation Using Carbon Dioxide-Rich Modified Atmospheres Why do CO₂ levels increase in sealed environments?

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