title: Pesticidal and pest repellency activities of rhizomes of Drynaria quercifolia (J. Smith) against Tribolium castaneum (Herbst).
abstract: BACKGROUND
  Tribolium castaneum (Herbst) is a harmful pest of stored grain and flour-based products in tropical and subtropical region. In the present study, rhizome of Drynaria quercifolia (J. Smith) was evaluated for pesticidal and pest repellency activities against T. castaneum, using surface film method and filter paper disc method, respectively. In addition, activity of the isolated compound 3,4-dihydroxybenzoic acid was evaluated against the pest.
  
  
  RESULTS
  Chloroform soluble fraction of ethanol extract of rhizome of D. quercifolia showed significant pesticidal activity at doses 0.88 to 1.77 mg/cm(2) and significant pest repellency activity at doses 0.94 to 0.23 mg/cm(2). No pesticidal and pest repellency activity was found for petroleum ether, ethyl acetate and methanol soluble fractions of ethanol extract as well as for 3,4-dihydroxybenzoic acid.
  
  
  CONCLUSIONS
  Considering our findings it can be concluded that chloroform soluble fraction of rhizome of D. quercifolia is useful in controlling T. castaneum of stored grain and flour-based products.
authors.affiliation: Department of Pharmacy, Rajshahi University, Rajshahi, Bangladesh. alamkhan792002@yahoo.co.in.
authors.forename: Alam
authors.initials: A
authors.lastname: Khan
authors.affiliation: Institute of Food and Radiation Biology, AERE, Savar, Dhaka, 1349, Bangladesh. roxyzool@yahoo.com.
authors.forename: Md Hedayetul
authors.initials: MH
authors.lastname: Islam
authors.affiliation: Department of Pharmacy, Rajshahi University, Rajshahi, Bangladesh. msekram74@yahoo.com.
authors.forename: Md Ekramul
authors.initials: ME
authors.lastname: Islam
authors.affiliation: Department of Pharmacy, Rajshahi University, Rajshahi, Bangladesh. alimalbari2@yahoo.com.
authors.forename: Md Abdul Alim
authors.initials: MA
authors.lastname: Al-Bari
authors.affiliation: Department of Pharmacy, Rajshahi University, Rajshahi, Bangladesh. rumiraj2@yahoo.com.
authors.forename: Mst Shahnaj
authors.initials: MS
authors.lastname: Parvin
authors.affiliation: Department of Pharmacy, International Islamic University of Chittagong, Chittagong, Bangladesh. ssmas2003@yahoo.com.
authors.forename: Mohammed Abu
authors.initials: MA
authors.lastname: Sayeed
authors.affiliation: Department of zoology, Rajshahi University, Rajshahi, Bangladesh. n_islamm@yahoo.com.
authors.forename: Md Nurul
authors.initials: MN
authors.lastname: Islam
authors.affiliation: Department of Pharmacy, Rajshahi University, Rajshahi, Bangladesh. ekramulekramul@yahoo.co.in.
authors.forename: Md Ekramul
authors.initials: ME
authors.lastname: Haque
mesh_terms: D000085:Acetates; D000473:Alkanes; D000818:Animals; D002725:Chloroform; D000431:Ethanol; D062385:Hydroxybenzoates / Q000302:isolation & purification / Q000494:pharmacology*; D007302:Insect Repellents / Q000494:pharmacology*; D007928:Lethal Dose 50; D000432:Methanol; D010571:Pest Control / Q000379:methods*; D010575:Pesticides; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification; D029621:Polypodiaceae / Q000737:chemistry*; D027343:Rhizome / Q000737:chemistry*; D014231:Tribolium / Q000187:drug effects*
chemical_list: D000085:Acetates; D000473:Alkanes; D062385:Hydroxybenzoates; D007302:Insect Repellents; D010575:Pesticides; D010936:Plant Extracts; C009091:protocatechuic acid; D000431:Ethanol; C007650:ethyl acetate; D002725:Chloroform; C004544:naphtha; D000432:Methanol