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Urea Super Granule (USG) application in paddy filed is an
innovative technology to reduce the nitrogen fertilizer losses in
the field. Manual application of USG in the paddy field is a time
consuming and laborious work, so USG applicator is demanded by the
rice grower. Different models of USG applicator were developed by
the scientist of Bangladesh, but these model had some problem
regarding their performance like higher missing rate and
uncomfortable to push the applicator. All of the available USG
applicator was collected and selected the best one based on
laboratory test. The best model was re-designed and most of the
problems were solved and filed performance of the applicator was
satisfactory.
An electric mower was modified in the workshop of the Department of
Farm Power and Machinery and evaluated in front of Food Technology
and Rural Industries Department and behind the Computer Science and
Mathematics Department of Bangladesh Agricultural University. The
mower was evaluated with three different types of grass such as
lawn grass, large grass and mixed grass using two types of cutter
(Disc cutter, Flexible single wire). The average cutting efficiency
of the mower using disc cutter and single wire for lawn grass,
large grass, and mixed grass are 98.48 %, 97.57 %, 95.10 % and
97.90 %, 97.46 %, 94.30 % respectively. The average effective field
capacity of the mower using disc cutter and single wire for lawn
grass, large grass, mixed grass are 0.0154 ha/hr, 0.0137 ha/hr,
0.0129 ha/hr and 0.0130 ha/hr, 0.0098 ha/hr, 0.0085 ha/hr
respectively. The cost of operation of electric lawn mower was
compared with manual operation in terms of field capacity
neglecting initial cost of lawn mower. The cost of manual operation
was nine times more than operational cost of mower and cost in case
of singe wire was also higher than mower using disc cutter in terms
of field capacity.
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