Trichoderma harzianum (2 x 10” cfu/g min.) is an antagonistic fungus that is capable of hyperparasitizing pathogenic fungi. Its importance as a biocontrol agent is because it is able to ttack a large variety of phytopathogenic fungi responsible for major crop diseases, such as: Botrytis, Fusarium and Penicillium sp., R. solani, S.rolfsii and Phythium aphanidermatum. T-harz produces various metabolites such as several lytic enzymes, including a [3-1,3-glucanase, and antibiotics which control disease causing microbes. In addition it stimulates plant defense mechanisms.
T-harz increases the rate of plant growth and development by developing more roots which help the crops to become more resistant to drought. T-harz has an additional beneﬁt of being able to solubilise phosphates and micronutrients.