Please use this identifier to cite or link to this item:https://hdl.handle.net/20.500.12259/80320
Type of publication: Straipsnis Clarivate Analytics Web of Science Master Journal List / Article in Clarivate Analytics Web of Science Master Journal List (S2)
Field of Science: Mechanikos inžinerija / Mechanical Engineering (T009)
Author(s): Sakalauskas, Antanas;Šarauskis, Egidijus;Jasinskas, Algirdas;Romaneckas, Kęstutis;Vaiciukevičius, Edvardas
Title: Trials of sugar beet seed pressing with different type pressure rollers
Is part of: Agronomy Research. , 2007, Vol. 5, N 2
Extent: p. 134-144
Date: 2007
Keywords: Design of pressure roller;Sugar beet;Furrow bottom;Soil hardness;Gravitational force
Abstract: Pressure rollers are mounted behind the seeder coulters as it improves the contact between sugar beet seeds and the soil and furthermore it improves seed germination ability. But pressure rollers of conventional sugar beet seeders used for sowing into tilled and cultivated soils cannot always be used for seed pressing in non-ploughed and uncultivated soils. The main design parameters of the pressure rollers of sugar beet seeds are: diameter, width, the number of rollers and fingers, mass, etc. The even seed pressing, the profile of the furrow bed, its hardness, seed damage and gravity, etc. depend on the above mentioned parameters. This paper presents the investigation of the technological process of operation of special type sugar beet seed pressure rollers and the experimental trial results of the tests carried out in the Hohenheim University in various soils. The theoretical investigations proved that the pressure rollers should be mounted on the seeder unit with the help of hinges and their pressure force onto the soil would depend on the gravitational force when the sugar beet seeds were sown in non-ploughed soils. The diameter of the pressure rollers should be not less than 180 mm in order to press the seeds into the soil into the depth of about 3 mm, and ensure their good contact with the soil. The experimental trials revealed that the narrow disc pressure roller of 220 mm diameter and 15 mm width introduces the seeds of sugar beet into the hard soil of 0.4 and 0.9 MPa and satisfies the conditions of good seed and soil contact. Disc pressure roller with fingers is made of two discs and every disc with 17 fingers introduces sugar beet seeds by 2 mm shallower than the narrow one and forms the waves in the furrow bottom. When the finger type pressure roller has been pulled through 0.4 - 0.9 MPa hardness soil the force used should be from 0.004 to 0.011 kN greater than using the narrow pressure roller
Internet: https://hdl.handle.net/20.500.12259/80320
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

Files in This Item:
marc.xml9.97 kBXMLView/Open

MARC21 XML metadata

Show full item record
Export via OAI-PMH Interface in XML Formats
Export to Other Non-XML Formats


CORE Recommender

Page view(s)

20
checked on Sep 13, 2019

Download(s)

2
checked on Sep 13, 2019

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.