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Agronomy QUESTION #2037
Question 1
Post-harvest losses in cereal grains during storage are MOST significantly caused by:
  • Exposure to ultraviolet radiation during daytime
  • Improper moisture content (above 13–14% for cereals) leading to mold growth, mycotoxin production, and insect infestation✔️
  • Use of metallic storage bins instead of gunny bags
  • Storage at temperatures below 10°C
Correct Answer Explanation
Grain moisture above 13–14% creates conditions favorable for fungal growth (Aspergillus, Penicillium), mycotoxin (aflatoxin) production, and insect multiplication. Maintaining safe moisture levels through proper drying is the single most critical factor in preventing post-harvest storage losses.