Efficiency factors of phosphine in stored grain fumigation
V. Malikov
AI summary
75% confidencePhosphine remains the primary fumigant for grain reserves, but its efficiency is affected by temperature, humidity, pest stages, and grain sorption. Optimal conditions for phosphine fumigation are temperatures between 25-30°C and relative humidity of 60-70%. The authors analyze the factors affecting phosphine efficiency and provide recommendations for optimization.
Generated by MESSAI extraction pipeline · review against source PDF
No 3D model is mapped to this paper yet. Parameter ranges above still place reported values on the literature distribution.
Abstract
Phosphine (PH3) remains the primary fumigant for protecting grain reserves in Russia. However, its efficiency depends on temperature, air humidity, pest development stages, and grain sorption. Optimal conditions are temperature +25...+30 °C and relative humidity 60–70 %. Temperature below 15 °C or humidity below 50 % sharply decreases the toxicity of phosphine. The authors analyse the differential sensitivity of pest development stages: larvae are highly susceptible, eggs – highly resistant. The paper highlights the molecular mechanisms of resistance (rph1, rph2 mutations), phosphine sorption by grain (20–40 %), and gas permeability. It includes practical recommendations for fumigation optimisation and resistance monitoring.
Key findings
- Larvae are highly susceptible to phosphine, while eggs are highly resistant
- Temperature below 15°C or humidity below 50% decreases phosphine toxicity
- Phosphine sorption by grain ranges from 20-40%
Keywords
Identifiers
- Journal
- Proceedings of the Komi Science Centre of the Ural Division of the Russian Academy of Sciences
- Year
- 2026