Vol. 6, Issue 3 (2019)
Rainfall variations and its correlation with groundnut productivity
Author(s): Pandya PA, Mashru HH, Patel RJ, Rank HD
Abstract: A study was planned to assess the rainfall variation and its correlation with productivity of Kharif Groundnut for Junagadh District, Gujarat, India. The analysis was done for seasonal, monthly, fortnightly as well as weekly rainfall. The results indicated that for the seasonal rainfall, arithmetic mean, standard deviation and coefficient of variation was found as 954 mm, 358 mm and 37% respectively. Highest CV was found as 91% for September while lowest as 51% for July. July contributed 42% of the total seasonal rainfall. The lowest coefficient of variation was 67% for third fortnight. 27SMW has high rainfall with low CV% as. The correlation coefficient between seasonal rainfall and groundnut yield was found as 0.79. The correlation of June was highest with coefficient as 0.68 and lowest in August with coefficient as 0.26. In case of weekly rainfall, highest positive correlation was observed to be 0.73 for the SMW22 followed by SMW39, 24 and 23. The rainfall and groundnut yield was highly negatively correlated with coefficient as -0.30 for the 34SMW.