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Performance Assessment of Manual Rice Harvesting Methods under Farmer’s Field Conditions CIGR Journal
Amponsah, Shadrack Kwadwo; Addo, Ahmad; Djidohopkin, Ella; Olaye, Romaric Biaou.
A better understanding of field performances for traditional harvesting methods and tools is essential in facilitating future improvement on design and overall efficiency. Performance of different manual harvesting tools and methods was evaluated under farmer’s field conditions for IR841 and Nerica L20 rice varieties in Benin. Results from evaluation showed that an average of 84 to 161 man-hours was required to thresh a hectare of rice field using either the threshing by impact “bambam” or bag beating method.  Less time was however required to thresh IR841 than Nerica L20 varieties, irrespective of manual threshing method used. Similarly, between 58 to 95 man-hours was required to harvest a hectare of field using either a cutlass or sickle. However, to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Harvesting; Threshing; Nerica; Drudgery; Field capacity; Cutlass; Sickle.
Ano: 2021 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6507
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Design, construction and evaluation of an evaporative cooler for the storage of sweet potatoes in the north Ghana CIGR Journal
Seweh, Emmanuel Amomba; Darko, Joseph Ofei; Addo, Ahmad; Asagadunga, Paul Akidiwe; Achibase, Sebastian.
A 14.4 × 86.0 × 70.0 cm mud evaporative cooler was designed and constructed for the storage of sweet potato roots to evaluate its performance in storing orange fleshed sweet potato variety (Apomuden) roots.  The investigation lasted for 14 weeks, from November 2014 to February, 2015.  The dry bulb (Tdb) and wet bulb temperatures (Twb) for the ambient storage ranged between 27.600C to 26.900C and 22.500C to 20.100C respectively with their corresponding RH of 64.00%, 77.00% respectively, while Tdb and Twb within the cooler ranged between 25.940C to 24.860C and 21.940C to 20.610C with corresponding R.H of 89.00% to 92.00% respectively.  The efficiency of the constructed evaporative cooler was 87.17%. From an initial weight of 2000 g, roots weight decreased to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Post-harvest Technology evaporative cooler; Storage weight loss; Wet bulb temperature; Dry bulb temperature; Moisture content; Energy content.
Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3716
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