• MECHANIZATION IN AGRICULTURE

    Evaluation of chosen indicators of intermittent seeder´s work quality

    Mechanization in agriculture & Conserving of the resources, Vol. 67 (2021), Issue 1, pg(s) 10-13

    As crop and animal production are interconnected, they together form the basic branch of agriculture. A great sense in the process of replacing cultivated crops is the cultivation of sugar beet, which can act as a breaker in planting of narrow row crops, livestock feed or green manure. In addition to seed development, cultivation technology has also been improved, and by that the technique has been modified. During cultivation, it is difficult to prepare the soil before sowing together with a good settlement of seeds in the soil, which creates suitable conditions for germination and subsequent emergence of plants. In the submitted article, we have focused on the evaluation of chosen indicators of intermittent speeder’s work quality. The measurements have been performed in accordance with the ISO 7256/1 standard for the evaluation of sowing equipment with intermittent sowing. The vertical distribution of the seed in the soil for field emergence at the seed base of the seeder Kverneland Accord Monopill S, at different working speeds, has been observed. The experiment was performed on aluminous-sandy soil with a soil moisture of 18.2%. In measuring the sowing depth, there were used two measuring systems, the so-called contact (inductive) sensor and non-contact (ultrasonic) sensor in connection with A / D converter with storage in IM memory card. Based on the obtained results, we can state that by increasing the travel speed from 1.11 m.s-1 to 3.33 m.s-1, the depth of the sowing foot was reduced on average by 19.61 mm.

  • MECHANIZATION IN AGRICULTURE

    THEORY OF TWO-DISC ANCHOR OPENER OF GRAIN DRILL

    Mechanization in agriculture & Conserving of the resources, Vol. 62 (2016), Issue 5, pg(s) 6-8

    High seeding quality of grain crops under modern technologies causes increase of requirements to seeders opener. We developed a new design of the combined two-disk anchor opener which can qualitatively carry out their functions under modern technologies, in particular no-till. Research purpose is development of the functioning theory of the created new furrow-opener design which integrates in itself constructive elements of two-disk openers and anchor type openers and can works on roughly prepared soil with plant residues and provides the stable seeds sowing depth at the increased seeding speeds. When carrying out researches methods of mathematics, theoretical mechanics, modeling, researches results statistical analysis, drawing up programs for calculations on PC are used. Parameters of the combined two-disk opener with the advanced mechanism of sowing depth regulation are substantiated. On the basis of the scheme of a opener design it is proved need of using certain rigidity spring for stability seeding to a predetermined depth within the agrotechnology limit.

    Dependences for calculation of rational spring elasticity which take into account geometrical parameters of opener design are obtained. The pilot studies conducted in field conditions confirm advantages of new constructive decisions of this combined opener. It is established that the seeder with the combined two-disk anchor openers steadily puts seeds on a compacted seed bed that excludes inertial seeds ejection beyond the agrotechnology limits, including at the increased seeding speeds.