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Chilean Journal of Agricultural Research
Instituto de Investigaciones Agropecuarias, INIA
ISSN: 0718-5820
EISSN: 0718-5839
Vol. 71, No. 4, 2011, pp. 634-637
Bioline Code: cj11078
Full paper language: English
Document type: Note
Document available free of charge

Chilean Journal of Agricultural Research, Vol. 71, No. 4, 2011, pp. 634-637

 en HERBICIDAL POTENTIAL OF Drechslera SPP. CULTURE FILTRATES AGAINST Parthenium hysterophorus check for this species in other resources L.
Javaid, Arshad; Javaid, Amna & Akbar, Muhammad

Abstract

Herbicidal activity of culture filtrates of four Drechslera spp., namely D. australiensis check for this species in other resources (Bugnic.) Subram. & B.L. Jain, D. biseptata check for this species in other resources (Sacc. & Roum.) M.J. Richardson & E.M. Fraser, D. hawaiiensis check for this species in other resources Bugnic. ex M.B. Ellis, and D. holmii check for this species in other resources (Luttr.) Subram. & P.C. Jain, prepared in malt extract broth was investigated against parthenium weed ( Parthenium hysterophorus check for this species in other resources L.) in both laboratory bioassays and pots. In laboratory bioassays, the effect of original (100%) and diluted (50%) culture filtrates of the four Drechslera spp. was studied on parthenium germination and seedling growth in 90 mm diameter Petri plates. Original culture filtrate of all the four Drechslera species significantly reduced germination, shoot length, shoot fresh biomass, root length, and root fresh biomass of parthenium seedlings by 43 to 77%, 77 to 82%, 69 to 82%, 90 to 92%, and 67 to 83%, respectively, as compared to the control. In pot trials, foliar application of original fungal culture filtrates was carried out on 1-wk and 2-wk old parthenium seedlings. Culture filtrates of all the four Drechslera spp., except D. holmii, markedly reduced parthenium shoot dry weight. Two-week-old plants were more susceptible to foliar spray than the 1-wk old plants. There was a 13 to 55% and 28 to 65% reduction in shoot dry weight of 1-wk and 2-wk old parthenium plants, respectively, due to culture filtrates of various Drechslera spp. The present study concludes that Drechslera spp. culture filtrates can be used as alternative herbicides for parthenium weed management.

Keywords
Drechslera spp., fungal culture filtrates, natural herbicides, Parthenium hysterophorus

 
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