Temporal dynamics of sucking pest and field response of promising insecticidal molecules in okra
Journal Title: Journal of Applied and Natural Science - Year 2016, Vol 8, Issue 1
Abstract
To investigate the response due to application of newer insecticide on sucking pest in okra, a trial was designed at field level for three consecutive years from 2011-12 to 2013-14 in kharif season. Moreover, impacts of applied insecticides on natural enemies were also assessed. Based on experimental finding thiamethoxam 25WG 0.003% (2.83 per 3 leaves, 0.93 per 3 leaves), imidacloprid 70WG 0.004% (3.49 per 3 leaves, 1.30 per 3 leaves) and thiacloprid 21.7 SC 0.006% (4.28 per 3 leaves, 1.75 per 3 leaves) provided superior control of leafhoppers and whiteflies population on okra. Effectiveness of these treatments was reflected in terms of reduction in population of both insects and significantly increases (thiamethoxam: 95.50 q/ha, imidacloprid: 86.96 q/ha and thiacloprid: 80.99 q/ha) the fruit yield in comparison to others. However, the incidence of Yellow Vein Mosaic disease was recorded least in thiamethoxam 0.003% sprayed plots followed by imidacloprid 0.004%. Slow progress in the population of whitefly and leaf hopper was recorded in thiamethoxam 0.003% applied plots. There was positive correlation between whitefly and virus incidence in conducted field trial. Under the experiment, neonicotinoids group of insecticides have not adverse effect on natural enemies in okra crop. The information generated under the study can be incorporated in management modules in crop okra without disturbing the ecology of natural enemy and cropping system. In our findings, the quantitative data of temporal increment of whiteflies and mosaic disease will be helpful in understanding or formulating of epidemiological models.
Authors and Affiliations
Tamoghna Saha, Mohmmad Ansar, C. Nithya, S. N. Ray
Keywords
Related Articles
- EP ID EP284467
- DOI -
- Views 98
- Downloads 0
Priority queueing model with balking and reneging
This investigation deals with two levels, single server preemptive priority queueing model with discouragement behaviour (balking and reneging) of customers. Arrivals to each level are assumed to follow a Poisson process...
Screening for pod shattering in mutant population of mungbean (Vigna radiata (L.) Wilczek)
Mungbean, (Vigna radiata (L.) Wilczek) occupies a unique position in Indian agriculture and has been grown under various agro-ecological conditions. It is cultivated in 1.61mha with production of 3.38MT and productivi-ty...
Standardization of mixed fruit cheese from Guava (Psidiumguajava cv. Hisar Safeda) and Mango (Mangiferaindica var. Safeda) and its quality evaluation during storage
The present investigation was carried out to prepare fruit cheese, a fruit confectionery prepared by combining fruit pulp with sugar, pectin and acid from blended fruit pulp of guava (Psidiumguajava) and mango (Mangifera...
Community participated management of chaur (floodplain) fisheries: A case study of mahisar chaur in Samastipur district of Bihar, India
Mahisar chaur, situated in north-eastern part of Samastipur district of Bihar, is spread over 607.29 ha area with an average water depth of 2.5-3 m. The chaur was flood prone and remained inundated with water for most pa...
Response of wheat cultivars to foliar potassium fertilization under irrigated saline environment
A field experiment with split-split plot design (SSPD) was conducted to study the response of two winter wheat (Triticumaestivum L.) cultivars (viz. salt tolerant cultivar KRL-1-4 and salt non-tolerant cultivar HD-2894)...