Hitlar Rahaman Bosunia, Kinkar Biswas
Due to the green revolution in agricultural field, the acceptability of the indigenous rice variety is decreasing now –a- days. The high yielding varieties (HYV’s) has importance in recent perspective. In this paper, we have studied some geometrical and gravimetrical properties of five indigenous rice varieties collected from different parts of Dinajpur districts of West Bengal, India and Bangladesh. The data of axial dimension showed, there was no horizontal vibration of rice variety that is very important for rice processing. According to the shape and size of the rice variety fall in slender, bold and fine to super‒fine in quality. We have calculated the angle of repose 𝜃 value and it was seen that all the varieties are free‒flowing (30‒38o). We have seen from the data that aspect ratio 𝑅𝑎 is proportional to sphericity 𝜑. The examined five indigenous rice varieties in this study are not spherical in nature. The surface area of S and the volume of V are the highest and lowest for Kalonunia (BD) and Begun Bichi (Ind) respectively. The surface area/volume ratio was observed as maximum for Begun Bichi (Ind) i.e. 1.959, might be responded by the easy heat transfer.
Indigenous rice varieties, High yielding varieties, geometrical properties, gravimetrical properties, free-flowing, sphericity
Cite this paper
Hitlar Rahaman Bosunia, Kinkar Biswas. (2021) A comparative study of various physical properties of five indigenous rice varieties of Dinajpur districts of India and Bangladesh. International Journal of Agricultural Science, 6, 106-117