African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12227

Full Length Research Paper

Mycoherbicidal potential of Alternaria alternata for management of Chenopodium album under field condition

Iffat Siddiqui1*, Rukhsana Bajwa2 and Arshad Javaid2  
1Botany and Microbiology Department, King Saud University Riyadh, Saudi Arabia. 2Institute of Plant pathology,University of the Punjab, Quaid-e- AzamCampus, Lahore 54590, Pakistan.
Email: [email protected]

  •  Accepted: 03 September 2010
  •  Published: 06 December 2010

Abstract

 

A field experiment was conducted to evaluate the mycoherbicidal potential ofAlternaria alternata to control Chenopodium album L., a problematic weed of wheat. Two wheat cultivars viz. Inqalab 91 and Punjab 96 were co-cultivated with C. album in 1:1 crop-weed ratio. Mycoherbicidal formulation was prepared in 20% canola oil emulsion with 10conidia mL-1 of A. alternata. The mycoherbicidal formulation was sprayed at 2 - 3 and then at 4 - 5 leaf stage of the weed. Application of mycoherbicide significantly reduced the biomass of the target weed species up to 90%. Mycoherbicidal application significantly enhanced number of fertile tillers and 100 grains weight in both wheat cultivars. As a result of mycoherbicidal application, root and shoot biomass was significantly increased in cv. Inqalab 91 but not in cv. Punjab 96. The present study concludes that application of A. alternata in 20% canola oil can reduced growth of C. album resulting in enhanced growth and yield of wheat.

 

Key words: Alternaria alternata, canola oil emulsion, Chenopodium album,mycoherbicide.