Using different types of Trichoderma as one of the methods to reduce fungal infections in pea plant

Peas (Pisum sativum L.) are essential crops for humans as they contain many proteins and multiple nutrients. Peas are infected with many pathogens, especially fungi, which cause serious damage to them, affecting their growth and production. The use of biological control, especially Trichoderma, as a means to reduce the spread of diseases and preserve the environment, human health, and the proportion of natural organisms and their vitality. In a confrontation between biological factors and pathogenic fungi that were tested. All Trichoderma isolates led to anti-activity for all pathogenic fungi tested, whether in the laboratory or the greenhouse. The best treatments of biological control agents (T.harzianum and T.koningii) in both the laboratory and the greenhouse. All studied treatments showed a significant reduction in damping-off disease and a significant increase in healthy plant survival compared to plants infected with three pathogenic fungi that were tested. Anatomy: Marked differences in the structure of the pea primary root were found between all cross-sections of roots of normal, healthy plants and plants infected with the three pathogenic fungi tested. These differences occurred primarily in the epidermis and cortex up to the endodermis. There was complete damage to some epidermal cells and a brown epidermal surface. It also showed detachment in some areas of the cortex tissue with decomposition of cell components leading to lysis.