DESIGN AND DEVELOPMENT OF MANUALLY OPERATED PULL TYPE FOUR ROWS UREA SUPER GRANULE (USG) APPLICATOR. Kundu A, Alam MM, Saha MK, Paul S, Nath BC, Mondal SC

ABSTRACT

A study was conducted to develop a manually operated pull type four rows USG applicator at the department of Farm Power and Machinery, Bangladesh Agricultural University (BAU), Mymensingh during the period of 2013-2014.The applicator was designed to place the USG in the field more easily, deeply, effectively and rapidly for four rows considering a spacing of 20 cm × 20 cm and depth of placement 5-7 cm. It was designed using Auto CAD engineering drawing tools and fabricated in the workshop under the department of Farm Power and Machinery, BAU, Mymensingh. The final weight of the applicator was 12 kg. The missing percentage of granular urea fall down was only 2.57 and over falling percentage were only 3.07. The recommended operational speed was 2.06 km/hr. The average distance between granular urea to granular urea was 39.89 cm although design distance was 40 cm. The effective field capacity of the applicator was 0.249 ha/hr at a forward speed of 2.06 km/hr and field efficiency was 75.55%. During field operation, minimum standing water (1-1.5 cm) should be maintained for better performing of the applicator. Farmer should be maintained the soil condition so that the softness of the field helps to make furrow opening and closing properly.  The machine was very easy to pull because pulling force was only 78.55 N. This is the main advantage over push type applicator. Due to four rows, its field capacity was higher than other applicators. Farmers (man or woman) can easily operate the machine. Overall performance of the applicator was found quite satisfactory.

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