Field evaluation of Alternaria alternata as mycoherbicide for the management of Rumex dentatus L.
Siddiqui, I., King Saud Univ., Riyadh (Saudi Arabia). Botany and Microbiology Dept. | Bajwa, R. | Javaid, A., University of the Punjab, Quaid-e-Azam Campus, Lahore 54590 (Pakistan). Inst. of Mycology and Plant Pathology
The study investigated the mycoherbicidal potential of Alternaria alternata to control Rumex dentatus L., a problematic weed of wheat(Triticum aestivum L.), under field conditions. Two wheat cultivars, viz. Inqalab 91 and Punjab 96, were co-cultivated with R.dentatus at 1:1 crop-weed ratio. Mycoherbicidal formulation was prepared in 20% canola oil emulsion with 10 sup 7 conidial/mL. The mycoherbicidal formulation was sprayed at the 2-3 and again at the 4-5 leaf stage of the weed. Application of mycoherbicide significantly reduced the biomass of the target weed species up to 88% and enhanced the number of fertile tillers, shoot and root biomass and grain weight in both wheat cultivars. The study concludes that A. alternata can be used as a potential biological agent for the management of R. dentatus in wheat.
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