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Abstract
Wheat is one of the most important cereals in the world for human consumption therefore fungal diseases and its control represents a great challenge. This experiment was carried out with the objective of looking for an alternative biological control agent, it was undertaken evaluating the effects of different doses of the commercially formulated Trichoderma harzianum Rifai (1969), fungal base, on quality physiological and sanitary selected wheat seeds. Two different planting methods were employed: in the Blotter test, sowing in seedbed, using a completely random array, applying five treatments with eight repetitions of 50 seeds, reaching a total of 400 seeds, with three different doses of the product (100, 200, 300 mL/100 kg seeds), including the absolute test subject and the chemical composition (Carbendazin + Thiram). The results were subjected to the ANAVA and the Tukey test allowing for a 5 % error margin. The fungal genera identified in the wheat seeds were Rhizopus spp. and Aspergillus flavus, in the control subject, The Rhizopus spp. genus fungi prevailed, while the application of different doses of T. harzianum resulted in a decrease of these colonies. According to the level of control, the three doses of the commercial formula applied were satisfactory, in addition to positively influencing the germination percentage of the seeds in relation to the control and the higher index of growth speed was observed after applying T. harzianum at a 300 mL/100 kg of seed dosage. T. harzianum can be used as a biostimulant in plants with a good antagonistic capability against phytopathogens that cause disease in wheat seeds.References
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