Commonly available low-cost natural substrates. including agricultural products and byproducts. were evaluated for blastospore production by the entomopathogenic fungi Beauveria bassiana (Balsamo)Vuillemin and Beauveria brongniartii(Sacc. ) Petch. https://www.lecoureures.shop/product-category/ski-de-fond-homme-bottes-back-country/