Thanks VMR and Nirlep!
Initially I thought that the DoF as is makes sense, but when I tried to visualize the image with more focused lower part of the grass and gradually fading at the top, that made more sense to me than this one. I tried for the same in the field as well by changing the focus point, but for my bad luck the wind kept busy in waving this grass blade and the results were not that good. I think rather than DoF it is the shift in the focus point which would have made this image more appealing than the present one!
A personal taste definitely!