Field efficacy of some biorationals against the two spotted spider mite Tetranychus urticae Koch (Acari: Tetranychidae)
Journal Title: Journal of Applied and Natural Science - Year 2014, Vol 6, Issue 1
Abstract
Field trials were conducted to evaluate the acaricidal potential of entomopathogenic fungus, Beauveria bassiana and aqueous extracts of Withania somnifera and Glyccirrhyza glabra against the mobile stages of Tetranychus urticae Koch on cucumber. The treatments responded in a concentration dependent manner. Highest reduction in T. urticae population was achieved with Omite (0.05%) followed by Nimbecidine (5ml/l), B. bassiana (1010 spores ml-1), W. somnifera (7.5%), B. bassiana (108 spores ml-1), G. Glabra (7.5%), G. Glabra (5%), G. Glabra (2.5%), W. somnifera (5%) and W. somnifera (2.5%). Higher yield was recorded in all the treatments as compared to control. In terms of percent increase in yield, Omite caused highest increase (23.65% over control) followed by Nimbecidine, B. bassiana (1010 spores/ ml), W. somnifera (7.5%), B. bassiana (108 spores/ ml), G. Glabra (7.5%), W. somnifera (5%), G. Glabra (5%), G. Glabra (2.5%), and W. somnifera (2.5%) showing 13.97, 11.82, 10.75, 8.67, 8.67, 8.6, 6.76, 6.48 and 6.45 percent increase over control, respectively. These data suggest that the tested biorationals at higher concentrations have the potential to be employed in pest management programs designed for T. urticae control.
Authors and Affiliations
Kanika Tehri, Rachna Gulati
Keywords
Related Articles
- EP ID EP105158
- DOI 10.31018/jans.v6i1.376
- Views 87
- Downloads 0
Evaluation of saturated hydraulic conductivity from soil properties in an Inceptisol using different land cover and depths
Three soil profiles from Regional Research Station of Bidhan Chandra Krishi Viswavidyalaya, Gayeshpur situated in New Alluvial zone of Nadia district, West Bengal were studied to assess the predictability of the hydrauli...
Ecobiology of coal mines and spoils
Coal is an important non-renewable source of energy, which is being constantly used by mankind for various purposes. Coal mining activities affect the surrounding ecosystem by contaminating it with traces of toxic metals...
Phytochemical screening and antibacterial effect of root extract of Boerhaavia diffusa L. (Family Nyctaginaceae)
Boerhaavia diffusa belonging to the family of the Nyctaginaceae is mainly a diffused perennial herbaceous creeping weed of India. The present study deals with the investigation of phytochemical analysis and evaluation of...
Bioefficacy of Bacillus subtilis against root knot nematode Meloidogyne incognita (Kofoid and White) Chitwood in tomato
An investigation was conducted for the management of root knot nematode Meloidogyne incognita (Kofoid and White) Chitwood infesting tomato through the application of bio-control agent like Bacillus subtilis, Trichoderma...
Influence of size grading on physiological parameters in Tephrosia (Tephrosia purpurea) MDU (KO)-1
Seed grading is an important practice for better crop establishment and to improve efficiency of planting ratio in field and also useful in separation of quality seed in a seed lot. The influence of seed size on physiolo...