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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39 For more details click here
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2020) [Effective from January 1, 2020]For more details click here

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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
For more details click here

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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(9): 562-570
DOI: https://doi.org/10.20546/ijcmas.2020.909.071


Population Dynamics of Spiders and Coccinellids in Rabi Tomato and Impact of Weather Parameters
Madhu E Hirur1*, G. Anitha1, D. Anitha Kumari3 and G. Uma Devi2
1Department of Entomology, 2Department of Plant Pathology,
College of Agriculture, Rajendranagar, Hyderabad 500030, India
3Vegetable Research Station, Sklts Horticultural University,
Rajendranagar, Hyderabad 500030, India
*Corresponding author
Abstract:

Predators are important links in the food chain and are needed to maintain herbivore population in crop ecosystem in check. However, like other insects, they are also vulnerable to various weather factors, which impedes the natural control that they contribute to the ecosystem. Information on impact of weather factors on predators helps to understand natural control better and also formulate integrated pest management practices. The present study was conducted in the fields of Agricultural Research Institute, Rajendranagar during rabi 2018-19 with a view to study the population dynamics of various spiders and Coccinellids in tomato crop and the impact of weather factors on them. Results revealed that out of all the ten families of spiders recorded, Araneid spiders were the most abundantly found spiders in the crop (2.96 spiders/ quadrat), while Pholcids were the least commonly recorded (0.01 spiders/quadrat). Araneids, Oxyopids and Tetragnathids and the three Coccinellid genera were recorded from the first week after transplantation (43 SMW) to the end of the harvest (4 SMW), while the other species were recorded from the second week after transplantation to harvest. Spiders of family Theridiidae were recorded only in the last three weeks of the crop. Most of the weather factors except maximum temperature were found to have negligible impact on most of the spider species and Coccienllids.  


Keywords: Population dynamics, Spiders, Coccinellids, Tomato, Weather parameters
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How to cite this article:

Madhu E. Hirur, G. Anitha, D. Anitha Kumari and Uma Devi, G. 2020. Population Dynamics of Spiders and Coccinellids in Rabi Tomato and Impact of Weather Parameters.Int.J.Curr.Microbiol.App.Sci. 9(9): 562-570. doi: https://doi.org/10.20546/ijcmas.2020.909.071