Comparison between chemical and biological control of Fusarium-root rot disease on the response of some physiological aspects of Cucumis sativus seedlings

Abstract

This work was carried out at the Girls College of Education, Jeddah, Saudi Arabia. The results revealed that treatment with the fungicide carbomar or T. harzianum as well as with B. subtilis, in presence of F. solani increased the % of healthy seedlings as well as their length , fresh and dry weight than in presence of F. solani alone but still less than the control. Coupling treatment with T. harzianum and seed coating with B. subtilis gave the best result. The photosynthetic pigments content of the leaves increased when treated with the pesticide carbomar or biological control, T. harzianum and/or B. subtilis. The same almost applied to amino acids, total nitrogen or total soluble sugar content of the seedling\'s leaves, though carbomar alone lowered it than control. Both treatments (chemical control, biological control) increased the test elements of cucumber seedling especially Zn and Fe than in presence of F. solani alone.

Egyptian Journal of Biotechnology Vol. 25 (1) 2007: pp. 94-101