Aspergillus tamarii rot

Aspergillus tamarii is a species of mold fungus within the genus Aspergillus, recognized as a significant agricultural pathogen responsible for various storage rots and seed decays. It is highly versatile and capable of colonizing a diverse range of agricultural commodities, significantly impacting food safety and economic yield.

This fungus primarily affects a variety of crops, including cereals (such as maize and wheat), legumes (soybeans, peanuts), and various fruits. The pathogen can infect plants during the ripening phase in the field, but its most destructive effects are usually observed during post-harvest storage, especially when processing conditions are suboptimal.

Symptoms of Aspergillus tamarii infestation typically present as a fuzzy, yellowish-brown to olive-green mycelial growth covering the affected area. Infected kernels or tissues often become discolored, friable, and exhibit a distinct musty odor. In advanced stages, the structural integrity of the seed is compromised, leading to complete degradation of the endosperm.

The development of the fungus is heavily influenced by environmental stressors. It thrives in high-humidity environments (above 75%) and warm temperatures, typically ranging from 25°C to 35°C. Poor ventilation, presence of physical injuries on the plant surface, and contamination from soil or handling equipment are the primary drivers of rapid disease spread.

The pathogenicity of Aspergillus tamarii is exacerbated by its ability to produce various mycotoxins, which pose significant health risks and render grain batches unfit for commercial or feed use. Comprehensive protection strategies involve the following:

• Maintaining strict moisture control in harvested grain (below 14% moisture content).
• Implementation of robust Integrated Pest Management (IPM) to reduce surface damage to crops.
• Regular sanitation of storage facilities and silos using approved antifungal agents.
• Timely crop harvesting to minimize exposure to field-borne fungal inoculum.