سيستم مكانيزه براي كاشت كلزا: ساخت و ارزيابي خطي كار نمونه

Mechanized Planting System for Canola:Construction and Test of Prototype Drill Seeder

One of the important factors in all stages of mechanization from crop production to processing is mechanized planting and in case a precision planting machine is used to place the seeds without scattering, at regular intervals along the row and in suitable condition, the excess consumption of inputs namely, seed, water, fertilizer and spray could be avoided. Also, cultivation and harvesting operations can be performed, easily, mechanicaly in less time and better quality and fewer cost. Regarding the growing trend towards canola production in the country, a precision drilling machine with precision metering and depth adjustment systems was constructed to be able to distribute single seeds evenly, along the row. The workshop tests were conducted upon the metering system of the designed precision drilling machine as well as localy available drilling machines constructed in Iran at four different travel speeds. The results indicated that precision drilling machine operated indepenet of speed and vibration didnʹt have any effect on the performance of metering system. Field tests were conducted for two planter (precision drilling machine and conventional drills) and two types of seedbed{mouldboard plow + disc + land leveler, mouldboard plow + rotivator ) using factorial experiment on the basis of randomized complete block design. Two types of planters were significantly different in terms of emergence number indices. Field test evaluation indicated that equidistant distribution of seeds was achieved and seed scattering in precision drilling machine was satisfactory.