The impact of certain growth regulators and Trichoderma harzianum on the incidence of root rot and biochemical activity in Phaseolus vulgaris L.

Autor: Abdel-Kader, Mokhtar M., El-Mougy, Nehal S., Masoud, Hassan M.M., Helmy, Mohamed S., Megahed, Allam A.
Předmět:
Zdroj: Archives of Phytopathology & Plant Protection; May2024, Vol. 57 Issue 8, p569-587, 19p
Abstrakt: The study investigated the effectiveness of seed dressing and foliar spray with indole acetic acid (IAA), gibberellic acid (GA) and Trichoderma harzianum, either alone or in combination, to manage root rot in green beans. The application of GA at concentrations of 40 ppm, 20 ppm, IAA at 20 ppm, 40 ppm and a combination of IAA at 40 ppm and GA at 40 ppm significantly reduced the incidence of pre-emergence root rot. Additionally, the use of IAA at concentrations of 10, 20 and 40 ppm completely suppressed post-emergence root rot in green beans. Furthermore, the application of tested growth regulators IAA and GA at different concentrations along with T. harzianum in combination induced higher chitinase polyphenol oxidase and phenylalanine ammonia-lyase activities compared to control. These treatments have the potential to be used as safe and effective alternatives to chemical fungicides for the control of green bean root diseases. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index