Statut des principales maladies cryptogamiques foliaires du blé au Maroc en 2013

Abstract

blotch were by far the most important foliar diseases in wheat fields, with prevalence of 85.4, 76.6 and 63.0 % respectively. At fields of durum wheat, the situation was characterized by the predominance of brown rust (79.0 %), leaf blight (70,1 %), and Septoria (45.8 %). Powdery mildew was less prevalent (14,2 %) on bread wheat and 11,4 % for durum wheat and less severe (8,0 %) saw its late appearance in the cycle of wheat. No symptoms of yellow or black rust was found in this study. Conclusion and application: Despite of the record cereal production of the 2012-2013 season (over 97 million cwt) due to exceptional rainfall, these climatic conditions have boosted the development and spread of fungal diseases. Following this alarming situation, and to mitigate their impact on the performance, a fungicides program was widespread. Septoria diseases caused by Septoria tritici was the dominant among the identified diseases.

Agromorphological Determinants Favoring the Spread of Anthracnose Disease in Cashew Agroforestry Farms in Côte d'Ivoire

“…The incidence (Ic) was determined by the ratio of the population of diseased individuals to the total population of individuals observed. The incidence (%) was assessed according to the following formula [32,33]:…”