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Research Detail

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Mr. M. Alam
Dept. of Farm Power and Machinery, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

The performance of machine was done in agronomy field of Bangladesh Agricultural University.  The effective field capacity was 0.11 ha/hr at a forward speed of 1.78 km/hr and 78.89 % field efficiency of developed granular urea applicator. The average distance between two dropped granular urea (GU) from left hopper & right hopper were 40.64 cm and 40.89 cm respectively. The average missing rate of GU dropped during field operation was 1.65% for granular urea size of 2.83 gm. The depth of granular urea placement was 7-10 cm in puddle field. The pulling force and draft of the developed applicator were varied between 5-11 kg and 3-6.62 kg respectively. The draft power was 0.027 kW for 55.38 N pulling force at 1.78 km/hr speed.  The application rate of the GUA was 170 kg/ha. The results of field and laboratory test of the developed applicator were better in comparison to other models of GUA. The operational cost of the applicator is 390 Tk/ha which is lower than 22.16% of BARI made push type GUA and 53% lower than the manually placement of GU. Average grain yield was highest (5234 kg/ha) when granular urea were applied by the developed applicator and followed by GU applied by BRRI made push type GUA (5213 kg/ha) and GU applied by manually (5209 kg/ha). The highest straw yield (6787 kg/ha) was obtained when GU applied by manually. However the differences of grain yields and straw yields were not significantly difference for applying GU by the applicators and manually operation. The manufacturing cost of the applicator is only Tk.6000. The weight and the draw bar power of the applicator were 15 kg and 0.03 kW respectively. Therefore one person (man or women) is enough to pull the machine. Overall performance of the applicator was found quite satisfactory. For this reason, the applicator may be introduced in Bangladesh to apply super granular

  Granular urea, Applicator, Pull Type and Performance
  Mymensingh
  01-07-2011
  30-06-2013
  Farm Mechanization
  Performance evaluation

To study the performance of the machine and compare that with other existing methods of granule urea placement.

 Deep placement of super granular urea is very laborious and time consuming work for manually operation. To overcome the human stress and drudgery to place the super granular urea, a low cost manually operated pull type 2-rows granular urea applicator (GUA) was designed and developed in the department of Farm Power and Machinery, Bangladesh Agricultural University, Mymensingh.The experiment designed and developed a pull type two rows granular urea applicator. However, they did not determine the performance of the machine in the field experiment. Therefore, a research was under taken to find the performance of the applicator at the agronomy field of BAU. The specification of the applicator was used in the study.1. Specification of developed granular urea applicator. 2. Determination the capacity of the applicator 3. Determination of missing rate 4. Distribution pattern of GU drop on dry land 5. Draft measurement of the applicator.

  J. Bangladesh Agril. Univ. 12(1): 211–220, 2014, ISSN 1810-3030
  
Funding Source:
  

The research observed that the effective field capacity of developed granular urea applicator is 0.11 ha/hr at forward speed 1.78 km/hr and 78.89% field efficiency which is better than the existing GUA. The average distance between two dropped granular urea (GU) from the hoppers is 40.64 cm which is the requirement of granular placement. On the other hand, average missing percentage is only 1.65% and average over falling (2 GU at time) is 6.6%. However, over falling is occurred due to small sizes of 2 GU and average total weight of 2 ureas were 2.88 gm. Therefore, it will not be harmful for plant growth & rice yield. The weight and the puling power of the applicator are 15 kg and 27 W respectively. Therefore, one person (man or women) is enough to pull the machine. The operational cost of the applicator is 390 Tk/ha which is 22.16% lower than that of  BRRI made push type GUA and 53% lower than the manually placement of GU. Therefore, it may be concluded that pull type two rows granular urea applicator may be introduced in Bangladesh for granular urea application in rice fields.

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