Evaluation of marigold varieties against red spider mite, Tetranychus urticae Koch
Suheel Ahmad Ganai, Hafeez Ahmad, RS Bandral, Sonika Sharma and Ramandeep Kaur
The present experiment was conducted to screen eight varieties/genotypes of marigold for their resistance/tolerance to Tetranychus urticae Koch. under natural infestation in pesticide free open field at the University Research Farm, Sher-e-Kashmir University of Agricultural Sciences and Technology - Jammu, Main Campus, Chatha during 2014 and 2015. The study results revealed that none of the varieties/genotypes was found to be resistant. Varieties namely Desi Gutta and Garland Orange were found to be low (less) resistant with a score of 0.61-0.90. Pusa Narangi Gainda and Garland Yellow were found to be moderately resistant. Pusa Arpita and Pusa Basanti were found moderately susceptible with a score of 1.21-1.50, while as Jafri and Crack jack mix were categorized as low (less) susceptible.