Resistance inducers for root and charcoal rots caused by Macrophomina phaseolina and their impact on sunflower (Helianthus annuus L.) growth parameters

The present work was carried out to study the effect of some safety compounds, e.g. plant guard & Rhizo-Nbiocide, Ocimum & Eucaliptus plant extracts, salicylic acid & ascorbic acid antioxidants compared to Rizolex-T in controlling root and charcoal rots of sunflower plants (Giza 102). Growth, and quality parameters in greenhouse and open field during 2016 and 2017 growing seasons were determined. Most treatments significantly protected sunflower plants from diseases and increased growth parameters compared to control plants. Under field conditions, naturally infected sunflower plants with Macrophomina phaseolina were significantly decreased compared to infected control. Vegetative growth parameters as plant height, head diameter, 1000 seed weight, percentage oil, protein of sunflower were increased significantly. The results provide an alternative and safe measures for control of sunflower root and charcoal rots.. Further trials with other safe compounds may be recommende