Effect of Vascular – Arbuscular Mycorrhizae Fungi (VAM) on Growth of Soybean and Corn Crops

Abstract

Two greenhouse experiments were conducted with corn and soy bean plants by using three species of VAM fungi (Glomus Mosseae, Glomus Etunicatum , Gigaspora Sp.) and four levels of phosphor (0, 25 , 50 ,100 ppm.) under sterilized soil condition . the results showed more differences in different fungi on growth acceptance of plant families , Glomus Mosseae caused highest response level in growth and root infection in corn plants while Glomus Etunicatum was superior among different VAM fungi and give highest response level and root infection in soy bean plants. generally root infection levels in vesicular – arbuscular mycorrhiza decrease with increasing phosphorus level added to the plant growth medium. therefore VAM fungi give different ways for infection levels depending on plant type and phosphoru level added to plant growth medium. the results revealed that there are correspondence among dry weight, percentage of infection and phosphorus levels added to the companion of Glomus Mosseae fungi and corn plants and Glomus Etunicatum and soy bean plants.