Influence of inorganic salts and chitosan as foliar spray on wheat septoria leaf blotch disease severity under field conditions

Abstract

Tri sodium polyphosphate, Potassium silicate, sodium silicate, Glutathione and chitosan were evaluated as foliar spray for suppressing septoria leaf blotch (SLB) disease severity were performed under field conditions. Meanwhile, the fungicide Topsin M70 was used as comparison treatment. Field experiments conducted with cultivation of three wheat cultivars in two different fields at two successive dates. Spray treatments with tested chemicals were carried out twice, during the growing season. At all applied treatments, it was observed that the cultivar Giza 171 showed the least SLB disease severity followed by Misr 1 and Gemmiza 12, respectively. The applied silicate salts, potassium and sodium showed superior suppressing effect of SLB severity on all sown wheat cultivars followed by chitosan, tri-sodium polyphosphate, glutathione and the fungicide, in respective order. Furthermore, increase in wheat grains yield showed conversely trend with disease severity. Such promising treatments might be included in integrated management strategies in comparable crops.

Keywords:

• Chitosan
• disease severity
• inorganic salts
• septoria leaf blotch
• inorganic salts
• wheat

Acknowledgments

This research was partially supported by In-House Project No. 12050106 of National Research Centre, Egypt entitled “Integrated Management of Diseases Affecting Wheat Crop during Vegetative Growth and production of Mycotoxins in Stored Grains”.

Disclosure statement

The authors declare that there is no competing interest.