Vol. 12, Issue 10 (2023)

Author(s):
Digamber, SS Jakhar, Axay Bhuker, Rahul Kumar, Sultan Singh and Gagandeep Singh

Abstract:
The present investigation was conducted during the years 2019 and 2021 to study the effect of date of sowing on physiological and biochemical attributes of Cowpea. The cowpea variety CS88 was sown on three different dates, viz., March 30 (S₁), May 30 (S₂), and June 30 (S₃), under the recommended package and practices in a plot size of 12 m² (4.0 m x 3.0 m) with a row-to-row spacing of 30 cm for each treatment in three replications by using a split-split plot design. The result of the two-year experiment showed that there was a significant variation in the physiological parameters like test weight, standard germination speed of germination, seedling length, seedling dry weight, seedling vigour index, electrical conductivity, and Enzyme activities like Catalase (CAT), Peroxidase (POX), Dehydrogenase activity (DHA), and superoxide dismutase (SOD) were also significantly affected by different dates of sowing. The yield of different sowings varied significantly. The maximum germination percentage (88.79% and 87.73% in year 2019 and 2021 respectively) and maximum biochemical activity was recorded in seed obtained from the seeds of second sowing (May 30). On the basis of present investigation it is concluded that early sowing and a delay in sowing time both reduce the seed quality attributes of cowpea.