Journal of Biosystems Engineering

Korean Society for Agricultural Machinery (한국농업기계학회)
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Development of a Variable Rate Granule Applicator for Environment-Friendly Precision Agriculture (III) - Analysis of Pneumatic Conveying System and Improvement of Fertilizer Application Uniformity -

친환경 정밀농업을 위한 입제 변량살포기 개발 (III) -공기이송 시스템 분석과 입제 살포균등도 향상-

  • Kim, Y.J. (Seoul National University) ;
  • Kim, H.J. (National Institute of Agricultural Engineering) ;
  • Jang, T.S. (Department of Environmental Engineering, Gwangju University) ;
  • Rhee, J.Y. (Department of Biosystems & Biomaterials Science and Engineering, Seoul National University)
  • Published : 2006.12.25
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Abstract

Application of precision farming technology to rice cultivation could be an effective measure for rice quality improvement and environment-friendly agriculture. This study was conducted to develope a variable rate pneumatic granule applicator. Previous study reported that application uniformity of the prototype machine (C.V. = 23.3%) was not satisfactory. To improve the uniformity, increase of blow-head number from 12 to 16 was suggested. Analysis of the pneumatic conveying system showed that increase of number of blow-head was possible. Three-way variance analysis of the modified applicator showed that inserting length should be changed according to granule metering rate. The range of metering rate from 27.3 to 417.9 g/s were divided into 4 levels and 4 sets of inserting lengths were determined to ensure CV values less than 15%. The revised applicator showed satisfactory C.V. values of 9.4 to 14.6% in the metering rate. Granule conveying pattern was observed using a high speed camera and judged as the homogeneous flow pattern.

Keywords

References

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