Mycorrhizal Corn Growth in Response to Different Iron Levels

Abstract

The growth of mycorrhizal and non-mycorrhizaI corn plants at six concentrations of iron was<br>monitored by visual observation after two weeks and by measuring their fresh and dry weights and heights<br>after eight weeks of growth in a green house. The results showed that Glomus mosseae - inoculated corn<br>plants displayed better growth responses than non-mycorrhizal corn plants at relatively low soil iron con-centrations<br>namely (3,10,20, 40mgkg-I), while at high concentrations (80, 160 mgkg-l) there were no pro-nounced<br>effects. In addition, high iron concentrations lessened the infection percentage of mycorrhizal<br>corn plants. The best concentration that gave good growth and high percentage of infection was 3 mgkg-l.