The cultivation of the olive tree has several problems related to pests and diseases that can cause heavy economic losses by causing the death of trees. Fusarium solani was detected in the olive trees of Sidi Taibi’s nurseries located in the national road between Kénitra and Rabat in spring 2012 and 2013 (1 to 2% of diseased plants). Koch’s postulate was verified in the olive trees variety ‘Picholine Moraine’, inoculated with F. solani. Three months after inoculation of the plants, the extremities of the young buds began to dry out, then the drying became generalized and the roots of the inoculated plants showed rot and detached from the base of the plants. The pathogen was re-isolated from the roots, dried buds, bark and petioles of the leaves of the inoculated plants; the percentage of isolation was 100%.

Fusarium equiseti as One of the Main Fusarium Species Causing Wilt and Root Rot of Chickpeas in Morocco

The richness of the soil in beneficial and growth-stimulating microorganisms and their symbiotic interactions with plants is a factor to be discovered. This kind of relationships is still poorly studied in cannabis (Cannabis sativa L.). The endomycorrhizal status of cannabis was assessed in two...

In the greenhouse, mixed inoculation of Tetraclinis articulata (Vahl) Mast.) with Rhizoctonia solani Kühn and Fusarium solani (Mart.) Sacc. caused remarkable damping-off and root rot compared to simple inoculation with one of the two pathogens. Root and stem infections caused significant reduction in plant growth. Root system total length was reduced by 36 to 43% and shoot height losses by 28 to 39%. Plants inoculated by one pathogen were shorter than control plants or inoculated plants by both pathogens. Disease severity ratings for plants infested with the pathogens mixture also were greater than with either pathogen alone up to 62 days post-inoculation. R. solani and F. solani interact synergistically, causing severe damping-off and root rot in T. articulata seedlings.