MODIFICATION AND FABRICATION OF A LOCAL PRECISION PLANTER SUITABLE FOR SUGAR BEET SOWING | ||||
| Egyptian Journal of Agricultural Research | ||||
| Article 31, Volume 82, Issue 3, September 2004, Page 1455-1469 PDF (4.49 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejar.2004.274857 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| IBRAHIM M. ABD EL-TAWWAB | ||||
| Agricultural Engineering Research Institute, Agricultural Research Center, Dokki, Giza, Egypt | ||||
| Abstract | ||||
| The main aim of this study was to develop, fabricate and adapt a local precision planter, which may be appropriate for Egyptian sugar beet sowing. The experiments were conducted at &niche Research Station season 2002-2003. Factors such as forward speed, type of drive wheel, type of covering device, and type of furrow opener were taken Into consideration. Field experiments were carried out to determine the following points: sowing uniformity, germination, wheel slip percent and power requirements. The results illustrate that the seed spacing uniformity and the germination percent were decreased with forward speed Increase, while, slippage percent and power requirement increased. No significant differences were found for speed of 2.5 and 5.4 km/h. However, significant differences were found with the speed of 7.2 km/h, which gave the lowest uniformity and germination. Moreover, it gave the highest slippage and power requirement. The data indicated that, the knife and scraper covering devices did not achieve the objective of these devices. The drag chain-covering device allows satisfactory emergence since it does not compact the soil because it is wide and light, minimize crusting and the formed seed zone is not disturbed. Results showed that, the shoe type opener was found to be the most suitable for sugar beet sowing and works well under normal soil conditions. Maximum slip percent (15%) resulted from rear press wheel drive at 7.2 km/h. Minimum slip percent (4.03%) was recorded at 2.5 km/h with ground wheel drive. The draw pull increased with the increase of the sowing depth and forward speed. A curve fitted draw pull may be presented by: D = -12.78 + 3.31 d + 2.73 v. | ||||
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