Vol. 6, Issue 4 (2018)
Seasonal and spatial distribution pattern of pod borer in pigeonpea Cajanus cajan (L.)
Author(s): Aman Shrivastva, RR Saxena and Mahendra Kumar
Abstract: The study has been undertaken to analyze spatial distribution pattern of pod borer of pigeonpea crop under Chhattisgarh plains of Chhattisgarh state. Spatial distribution of pod borer in pigeonpea crops, the various indices of dispersion, viz., variance mean ratio indicated that the pod borer in pigeonpea followed the regular distribution for all standard weeks, patchiness index indicated that the pod borer in pigeonpea followed the dispersed nature distribution for all standard weeks, Iwaos’s m*-m relationship indicated that the population of pod borer in pigeonpea showed regular distribution, Taylor’s power law indicated that the population of pod borer in pigeonpea had dispersed nature of distribution. Positive significant correlation with maximum temperature in 45th, 47th, 48th,50th, 51th and 52th standard week, negative significant correlation with 46th, 49th, 1st, 2nd, 3rd and 4th standard week and rest standard weeks non-significant correlated, negative significant correlation with rainfall in 45th, 46th, 48th, 3rd and 4th standard week and rest standard weeks non-significant correlated, positive significant correlation with RH-I in 50th, 52th, 1st, 2nd, 3rd and 4th standard week, negative significant correlation with 45th, 47th, 48th, 49th and 51th standard week and rest standard weeks non-significant correlated. On the basis the values of standard error, R2 and R2(adjusted) in both regression model, it was found that model-B gives a better fit of transformed data the model-A of pod borer population. So we may used model-B to predict the dynamics of pod borer population.
Pages: 183-188 | 797 Views 52 Downloads
download (5422KB)
How to cite this article:
Aman Shrivastva, RR Saxena, Mahendra Kumar. Seasonal and spatial distribution pattern of pod borer in pigeonpea Cajanus cajan (L.). Int J Chem Stud 2018;6(4):183-188.
