A Review of Physical and Mechanical Properties of Cassava Related to Harvesting Machines

Atsyo, Sena Yaw; KORKMAZ, Cem; Özlüoymak, Ömer Barış; Güzel, Emin

doi:10.20319/mijst.2020.62.102118

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…The upper parts of the stems with the leaves are plucked off before harvest. The low success recorded in the mechanisation of cassava production is attributed to lack of appropriate harvesting machine at harvesting that the present manual harvesting of cassava is not appropriate with the demand of the modern processing techniques [3]. Farm labor, which is scarce and costly, drudgery, also a lot of time consumption and wastage are disadvantages of the existing manual harvesting techniques.…”

Section: Introductionmentioning

confidence: 99%

Design and Performance Evaluation of a Cassava Harvester Lifting Unit

Edun,

Agbetoye,

Ajayi

et al. 2024

Engineering Headway

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The research study employed the method of lifting to design a cassava lifting unit and its performance was evaluated using the power-take-off (PTO) of the tractor at 540 rpm speed and transmitted via the reduction gearbox of ratio 19:1 then to the driving mechanism (chain and sprocket) which drives the lifting discs to perform the third stage of harvesting cassava. The field test was conducted at the Federal University of Technology, Akure Ondo State. Nigeria teaching and research farm with one variety of cassava (sweet cassava). The tests were conducted at 1m interval spacing to evaluate the effect of different levels of parameters on the performance of the implement. Forward speed, depth of cut, and soil moisture content (clayey-loam soil) were the parameters that varied. The harvester was operated at forward speeds of 2.0 km/h, 4.0 km/h, and 6.0 km/h, depth of cut 30 cm, 32 cm, 34 cm, and soil moisture content of 15 %, 17.5 %, and 20.15 % (wet basis) using a moisture meter. The parameters kept constant were, soil type, variety of cassava, and lifting speed. The field capacity or harvesting rate which is the area harvested per unit time was also measured. The lifting efficiency is high at an optimum moisture content of 20 % wet basis. The optimum forward speed and depth of cut for an efficient lifting of the cassava was 4 km/h and 34 cm at 60 % moisture content and soil penetration resistance was taken on the first day twice (morning and evening) at different depths. The final reading was taken three days after which rain had fallen. The increase in lifting efficiency and percentage of tubers harvested was 75% at optimum forward speed and soil moisture. Thus, the result showed that there is an improvement in the harvesting approach and method. Keywords: Cassava, Harvester, Lifting, Unit, Optimisation, Optimum. Corresponding Author: bosemosunmola@yahoo.com

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Section: Introductionmentioning

confidence: 99%

Design and Performance Evaluation of a Cassava Harvester Lifting Unit

Edun,

Agbetoye,

Ajayi

et al. 2024

Engineering Headway

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“…Research on the physical and mechanical properties of agricultural crops is related among others to Cassava harvesting machines (Atsyo et al 2020); mechanization of the potato harvest (Ahangarnezhad et al 2019); the possibility of breaking the seed shell of peanuts (Kurt and Arioglu 2018); the possibilities of red beet processing (Schäfer et al 2020); designing equipment for transporting and storing peaches (Zohrabi et al 2013); transporting cherries (Sharifi-Sangdeh and Aghkhani 2018); distinguishing varieties of lemons (Baradaran Motie et al 2014); and collecting data of apples for the harvesting robot (Li et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Changes in physico-mechanical properties of water caltrop fruit (Trapa natans L.) during the drying process

Toma

Kukliński

Dajdok

2021

Sci Nat

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The cosmopolitan water caltrop plant (Trapa natans L.) produces nuts, which in the maturing process develop very hard pericarps. This hardness, together with structure and shape (external spikes) of pericarp and seed, and the water contained in the fruit are responsible for their mechanical properties. This study determined the force needed to break Trapa natans nuts at various drying stages, with tests having been carried out at weekly intervals until the fruit dried completely. The amount of force necessary for cracking nuts at each of the 6 drying stages was determined, as well as the work of crushing calculated until the greatest compressive force (crushing force) was reached. The force needed to rupture the hydrated fruit in the horizontal plane was higher than that necessary for the rupture of dried fruit. The experiment showed that the maximum force needed to crush the fruit was 828.7 N and occurred when crushing the fruit after 2 weeks of drying, while the largest calculated crushing work was 2185.5 mJ for the same fruit. Other strength parameters were introduced to characterize mechanical properties of water caltrop in a more extensive scope. These are hardness defined as a ratio of compressive force increment to strain increment, specific crushing energy defined as a ratio of crushing work to water caltrop’s mass, and unit crashing force defined as a ratio of crushing force to caltrop’s thickness. All these parameters reached their highest mean values for pericarps after 2 weeks of desiccation. Mass measurements were also applied in modelling the desiccation process by the exponential function. The very dense pericarp material, after reaching maturity, slightly changes during drying. It can be used industrially as an extremely durable and biodegradable biological material. Results also suggest that the great evolutionary success of the species may result from the ability of the pericarp to protect its seeds, leading to the spread of this species in aquatic environments.

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A Review of Physical and Mechanical Properties of Cassava Related to Harvesting Machines

Cited by 2 publications

References 9 publications

Design and Performance Evaluation of a Cassava Harvester Lifting Unit

Design and Performance Evaluation of a Cassava Harvester Lifting Unit

Changes in physico-mechanical properties of water caltrop fruit (Trapa natans L.) during the drying process

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