Effect of cultivars and insecticides on sitonid weevil, Sitona crinitus (Coleoptera: Curculionidae), and on yield, yield components and nodulation of lentil (Lens culinaris)

Erman M., Yardim E., Kulaz H.

Indian Journal of Agricultural Sciences, vol.75, no.4, pp.204-206, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 75 Issue: 4
  • Publication Date: 2005
  • Journal Name: Indian Journal of Agricultural Sciences
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.204-206
  • Keywords: pulse protection, lentil, Lens culinaris, Sitona crinitus, insecticides
  • Bursa Uludag University Affiliated: No


An experiment was conducted during 2001 and 2002 to determine the effectiveness of different insecticides against sitonid weevil [Sitona crinitus (Herbst.)] (Coleoptera : Curculionidae) on 2 cultivars ('Sazak 91' and 'Yerli Kirmizi') of lentil (Lens culinaris Medikus). Yield, yield components and number of nodules fed by larvae were compared between the 2 cultivars as well as among insecticide treatments. Insecticides applied were chlorpyriphos (720 g ai/ha), malathion (1 300 g ai/ha) and a systemic insecticide, oxydemeton methyl (265 g ai/ha). Application of oxydemeton methyl decreased the damage on nodules by 52.6 and 41.2% in 2001 and 2002, respectively, resulting in seed yield increase (729 and 1 461.6 kg/ ha in 2001 and 2002), biological yield (1 825.5 kg/ha and 3 521.6 kg/ha), pods/plant (23.8 and 25.7), 1 000-seed weight (47.7 and 48.4 g), plant height (26.1 cm and 30.0 cm), branches/plant (7.3 and 8.0), root dry weight/plant (0.136 g and 0.106 g) and shoot dry weight/plant (0.859 g and 1.056 g) over the control treatment. 'Yerli Kirmizi' cultivar showed less nodules fed (0.8 and 1.9 respectively) by the sitonid pest and gave higher seed yield (712.6 and 1 393.3 kg/ha than 'Sazak 91'(537.4 and 1 301.3 kg/ha) in 2001 and 2002 respectively.