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Research Detail

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Md. Samiul Basir
Department of Farm Power and Machinery, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Muhammad Mustagis Billah
Department of Computer Science and Mathematics, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Muhammad Ashik-E-Rabbani
Department of Farm Power and Machinery, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

A motor-operated maize seeder was designed and fabricated. The performance of the seeder was tested in laboratory and compared with a manual-operated seeder. Hybrid maize seed variety, Sunshine NK40 by Syngenta, was used for the performance test of the seeder during January to April/2017. The two seeders, manual-operated and motor-operated, provided an average seed spacing of 22.48 cm and 20.94 cm, respectively, while the standard seed spacing for maize is 20 cm. The seed spacing of the motor-operated seeder varied from the standard value because of the trapping of seed between the seed hopper and metering device. The missing rate of the manual seeder was 13.2% while the motor-operated seeder provided a missing rate of 5.9%. Due to constant forward speed, the motor-operated seeder resulted in 2.3 times lesser missing rate than the manual seeder. The seed rate of the manual- and motor-operated seeder was found to be 30 kg/ha and 25.7 kg/ha, respectively, although both the seeders were calibrated to maintain a constant seed rate of 25 kg/ha. The field capacity and field efficiency of the existing manual seeder was found 0.128 ha/h and 76.65%, respectively, whereas the field capacity and field efficiency of the motor-operated seeder was found 0.135ha/h and 74.76%, respectively. The motor-operated seeder has a limitation of time loss during turning and the required time loss resulted in low field capacity and field efficiency. Break-even analysis shows that at the yearly use of 0.23 hectares, the operation cost of manual seeder and hand application method were the same. Therefore, manual seeder will be beneficial to the farmers when the annual use exceeds 0.23 hectares of land. Compared to manually-operated seeder, the motor-operated seeder can reduce seed requirement by reducing missing rate and save labor and time of operation if the time loss during turning can be minimized.

  Maize seeder, Motor operated, Seed spacing, Field efficiency, Missing rate
  At the workshop of Farm Power and Machinery Department of Bangladesh Agricultural University, Mymensingh
  00-01-2017
  00-04-2017
  Socio-economic and Policy
  Performance

This study was carried out to evaluate performance of a newly fabricated motoroperated seeder for maize seed and to compare the performance of the existing manual- and motor-operated seeders for maize.
 

This study was conducted at the workshop of Farm Power and Machinery Department of Bangladesh Agricultural University, Mymensingh during January to April/2017. The experimental site was a flat land containing sandy loam soil.  Manual and motor-operated seeders Themanually-operated seeder was fabricated and tested in FPMD workshop . The machine was push type with two metering devices for two seed hoppers. The power transmission system is a chain and sprocket system with the gear-pinion arrangement. Test of seeders: The performance of a manual and a motor-operated seeder was conducted based on seed spacing, missing rate, field capacity and efficiency of the machines for maize seeds. In the experiment, cell-type metering devices were used, and seed sowing was done in furrow. The manually-operated seeder was tested at the testing bed of the Farm Power and Machinery departmental (FPMD) workshop. The motor-operated seeder was fabricated at FPMD workshop and tested both in the laboratory and testing bed. Laboratory tests:  Parameters of laboratory tests like self-weight, seed rate, etc. were measured in the laboratory.  Self-weight of the seeder: The self-weight of a machine is related to the operational ease of the machine. The self-weight of the applicator was measured by a digital strain gauge scale balance.  Seed rate: By calibrating the seeder in laboratory, seed rate was determined. Uniformity of seed rate on the plate-type seed metering device was maintained by adjusting the gap of seed meter. The seed rate of different types of seed for seeder machine was calculated by (Asha, 2015).  Field test: Field test was done in the testing bed containing sandy loam soil. The length and width of the testing bed was 13.41m and 2.13m, respectively.  Seed spacing: Distance of dropped seeds, maintained by the seeder, was measured carefully. After each pass of the seeding operation, one observer measured the spacing of dropped seeds in the field. After observation, the average distance of dropped seeds was calculated.

  J Bangladesh Agril Univ 17(2): 251–257, 2019 ISSN 1810-3030 (Print) 2408-8684 (Online)
  https://doi.org/10.3329/jbau.v17i2.41990
Funding Source:
1.   Budget:  
  

The seed spacing of the motor-operated seeder varies from the standard value because of the trapping of seed between seed hopper and metering device. The missing rate of the motor-operated seeder was found 2.3 times lesser than that of manual seeder. The effective field capacity of the motor-operated seeder was satisfactory compared to the theoretical capacity of the machine. The dissimilarity in field capacity occurred for the manual seeder due to variation in walking speed were minimized in the motor-operated seeder as the motor RPM can be kept fixed in motor-operated seeder. The field capacity increased because of its uniformity and timeliness. The motor-operated seeder has a smaller field efficiency compared to the manual seeder since turning of the motor-operated seeder takes a considerably higher time than the manual seeder. So, the effective field capacity was much lower than that of the theoretical. The seed rate also varied for the manual seeder, but in case of the motor-operated seeder, it is closer to the standard value for maize sowing. The manually-operated seeder is time consuming and labor oriented. Sowing of maize by motor-operated seeder achieves the timeliness and uniformity of seeding and lessens labor requirement with more accuracy in sowing seeds. Therefore, it can be concluded that cultivation of maize by using motor operated seeder is more effective than the manual seeder.

  Journal
  

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