Abstract
This research aimed to study the physical properties and pattern of cassava bunches in soil as data for inter-row weeding machine design. The study consisted of the bunch weight, bunch size, and spreading pattern of bunch. The 3 – 12 months old Huay-Bong variety was investigated monthly. The results showed that at 3 months old the cassava had a bunch weight, cassava root diameter, and bunch spreading perpendicular to row of 0.4 – 1.0 kg, 1.1 – 3.1 centimetres, and 34.0 – 98.0 centimetres respectively. At the harvesting period the bunch weight was 1.8 – 6.1 kg with cassava root diameter of 3.0 – 8.0 centimetres, while the spreading of bunch perpendicular to row on each side was 10.0 – 50.0 centimetres, and row distance was 19.0 – 110.0 centimetres. Finally the average of depth of bunch was 24.5 – 33.1 centimetres respectively.
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