A major problem of grains storage in the rain forest zone of West Africa is high

The major problem of grains storage in the rain forest zone of West Africa is high humidity. This is because the high humidity in the environment provides a suitable condition for microorganisms, insects, and pests to grow, thereby leading to spoilage of the grains. The moisture content in the grains also increases due to the high humidity, which can lead to germination and spoilage. Therefore, controlling the humidity level during storage is crucial to prevent spoilage and preserve the quality of the grains.