Tropical tuber crops provide a substantial part of the world's food supply and constitute an essential source of income in rural and marginal areas. These crops are affected by fungal pathogens, which are highly contagious. Several methods have been developed in the past decades to tackle this global problem. However, to eradicate the pathogenicity, cost-effective methods should be employed to benefit the low-income farmers of developing and underdeveloped countries. Using plant extracts has resulted in a novel approach to controlling pathogens that impede quality food production. Plant extracts contain various bioactive components that can control fungal growth. Biocontrol agent such as several Trichoderma species are used as biocontrol agents (BCAs) is due to their high reproductive capacity, ability to survive in harsh conditions, efficiency in the nutrient utilisation, ability to modify the rhizosphere, a high level of virulence against phytopathogenic fungi, and effectiveness in encouraging plant growth and defence mechanisms. Fungicides are indispensable crop protection components that have played a vital role in managing numerous catastrophic crop diseases and achieving desirable crop yields. To achieve better results, fungicides must be used more prudent and hence, this will increase the demand for food, feed, and fibre.