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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.
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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 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
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.2017.6(10): 445-450
DOI: https://doi.org/10.20546/ijcmas.2017.610.054


Role of Macroclimatic Parameters on the Oscillation of Major Pest Complex in Summer SRI (Oryza sativa L.)
Dibyendu Mondal1*, Anannya Ghosh1, Debashis Roy2, Adyant Kumar1, Diana Shamurailatpam1, Ratikanta Ghosh1, Pintoo Bandopadhyay1, Shantanu Jha2 and Anurup Majumder3
1Department of Agronomy,
2Department of Agricultural Entomology,3Department of Agricultural Statistics, Bidhan Chandra Krishi Viswavidyalaya,Mohanpur 741252, Nadia, West Bengal, India
*Corresponding author
Abstract:

Studies were carried out to evaluate the impact of abiotic factors on dominant pest complex of SRI during summer season of 2014-15 and 2015-16 at Instructional Farm, Jaguli, Bidhan Chandra Krishi Viswavidyalaya (BCKV), Nadia, West Bengal. Multiple correlation and regression coefficients were also computed to establish the relationship between weather factors and dominant pest complex (weeds, insects and diseases). Both maximum and minimum temperatures and total rainfall showed a positive but non-significant correlation with grass (Echinochloa formosensis), sedge (Cyperus difformis) and broad leaf (Alternanthera philoxeroides) weed species. Highest mean per cent dead heart (8.33%) and white head (15.33%) caused by yellow stem borer were encountered at 30 DAT and 90 DAT respectively. In due course of time, temperature and minimum relative humidity positively correlated with yellow stem borer infestation in a significant fashion where the computed ‘r’ values were 0.662 and 0.773 respectively. In case of blast disease, significant positive correlation was registered with minimum relative humidity (r=0.767). However, rainfall showed non-significant (r= 0.291) but positive effect on the sporulation of blast fungus under open field condition. Thus, the salient findings of the present investigation can be a ready reckoned for the farming community in predicting the appearance of different pests where they can utilize it in sustainable management of weeds, insects and diseases culminate economic losses in SRI.


Keywords: Abiotic factors, Weeds, Yellow stem borer, Blast, SRI.
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How to cite this article:

Dibyendu Mondal, Anannya Ghosh, Debashis Roy, Adyant Kumar, Diana Shamurailatpam, Ratikanta Ghosh, Pintoo Bandopadhyay, Shantanu Jha and Anurup Majumder. 2017. Role of Macroclimatic Parameters on the Oscillation of Major Pest Complex in Summer SRI (Oryza sativa L.).Int.J.Curr.Microbiol.App.Sci. 6(10): 445-450. doi: https://doi.org/10.20546/ijcmas.2017.610.054