The present study was designed to evaluate the state wise Basmati and non-Basmati rice production performance in India. The study is based on the time series data on area production and yield which were compiled from various sources for a period of 39 years (1980-81 to 2018-19). The sate wise analysis considers for the major basmati and non-basmati production sates by merging the newly divide states to parents’ sates like Telangana to AP etc. While considering overall period in basmati area (6.01%) production (10.55%) and yield (4.28%) shows positive growth rate with 1 per cent level of significance. Allover India shows positive growth rate like area (0.24%), production (1.95%) and Productivity (1.70%) with 1 per cent level of significance. For India, in overall period it is more stable as Area (2.89), Production (6.07) and yield (4.5) give low instability percent. Special attention program is need to enhance the production of rice in Assam and Orissa were two states are in lowest category in terms of productivity, so effects may be taken to increase the productivity in Assam and further increase from medium to high productivity states in case of Andhra Pradesh.
The tight focusing properties of a radially polarized Gaussian beam with a nested pair of vortices having a radial wave front distribution are investigated theoretically by the vector diffraction theory. The results show that the optical intensity in the focal region can be altered considerably by changing the location of the vortices nested in a radially polarized Gaussian beam. It is noted that focal evolution from one annular focal pattern to a highly confined focal spot in the transverse direction is observed corresponding to the change in the location of the optical vortices in the input plane. It is also observed that the generated focal hole or spot lead to a focal shift along the optical axis remarkably under proper radial phase modulation. Hence the proposed system may be applied to construct tunable optical traps for both high and low refractive index particles.
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