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Investigation on appropriate two‐stage drying techniques for quality paddy seeds
Author(s) -
Islam Motaharul,
Nasrin Taslema,
Islam Mofizul,
Sarker Sazzat Hossain
Publication year - 2021
Publication title -
journal of food process engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.507
H-Index - 45
eISSN - 1745-4530
pISSN - 0145-8876
DOI - 10.1111/jfpe.13690
Subject(s) - germination , stage (stratigraphy) , fluidized bed , horticulture , mathematics , environmental science , chemistry , biology , paleontology , organic chemistry
An attempt was made to investigate appropriate two‐stage drying techniques for quality of paddy seeds. In this research, two options of two‐stage drying were conducted for three varieties of paddy (BR‐11, BRRI Dhan‐51, and Guti Swarna). In both options, first stage drying was carried out by a fluidized bed dryer using three temperatures (50, 55, and 60°C) at constant bed thickness of 15 cm. After tempered, in the first option, samples were further dried in second stage by sun drying (28–32°C). In the second option, samples were further dried in second stage in same fluidized bed dryer using three temperatures (35, 40, and 45°C). Comparison of germination percentage in the first option, it revealed that higher germination percentage was obtained than sun‐drying method while dried at 50°C in the first stage followed by sun‐drying method at 30 ± 2°C in the second stage except in case of Guti Swarna. In the second option, it revealed that higher germination percentage was obtained than sun‐drying method while dried in fluidized bed dryer at 50°C in the first stage followed by 35°C in second stage except in case of variety Guti Swarna. Therefore, drying at optimum air temperature for both options can be applied for paddy seed drying in Bangladesh. Practical Application Rice ( Oryza sativa ) is one of the most important food crops in all over the world. According to the Bangladesh Bureau of Statistics (Yearbook of Agriculture Statistics, 2018) about 3.6 million tons of paddy produced in Bangladesh. The most important input for any agricultural production is seed than other inputs. In Bangladesh used only 15% of the total paddy seed is quality seed. Drying is an energy‐intensive and most important postharvest operation for the production of quality seed. The outcomes of the proposed research can play an important role in the improvement of the socioeconomic status of paddy seed growers and product processors of Bangladesh. It will be helpful for seed company who produces a huge amount of seed and also helpful in the rainy season when sun drying is not available.