THE USE OF Glomus fasiculatum, A MYCORRHIZAL FUNGUS TO OVERCOME THE EFFECT OF·' THE INDUSTRIAL WASTES ON THE GROWTH OF COWPEA

Document Type : Original Article

Authors

1 Botany Department, Faculty of Science, Mansoura University, EI· Mansoura, 35516 Egypt.

2 Plant Pathology Department, Faculty of Agriculture, Mansoura University, EI·Mansoura, 35516 Egypt.

Abstract

The effect of preinoculation with the mycorrhizal fungus (Glomus fasiculatum)
on growth and tolerance 0 f cowpea plants irrigated with different concentrations of
waste effluents drained from fertilizers' industry was studied. The results indicated
that, the relative growth rate, dry weight, nodule formation, total pigment content as'
well as tolerance indices of mycorrhizal cowpea plants were significantly reduced by
irrigation with different levels of the polluted water. Mycorrhizal association irnproved
not only the all above parameters but also aided in overcoming the detrimental growth
effect of the polluted irrigation water. The macro- and micro-element contents. (P, N,
Na, Mg. Cu, Co. Zn and Fe) of cowpea plants grown on polluted soil were much
higher than those of nonpolluted ones. Results emphasized that vesicular arbuscular
(VA) mycorrhizal symbiosis' can increase metal tolerance of cowpe.a plants. The
percentage of VA mycorrhizal infection showed marked reduction with raising the
pollution level. The mycorrhizal dependencies for plant dry mass decreased at 10 &
20% pollution level. but, it increased at higher pollution level (40.%).
Journal of Plant Production
Volume 28, Issue 7
July 2003
Pages 5387-5403

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