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Type of publication: Straipsnis recenzuojamoje Lietuvos tarptautinės konferencijos medžiagoje / Article in peer-reviewed Lithuanian international conference proceedings (P1e)
Field of Science: Mechanikos inžinerija / Mechanical Engineering (T009)
Author(s): Germanas, Laimutis
Title: Formations of sowing notches in stubble soil
Other Title: New technological processes and investigation methods for agricultural engineering : proceedings of the international conference, 8-9 september 2005
Is part of: Proceedings of the international conference. , No. 10 (2005)
Extent: p. 77-83
Date: 2005
Abstract: Stubble sowing quality is conditioned by working parts of sowing, main of which are sowing coulters. The quality of formation of sowing notches and seeds insertion depends mostly on the type of coulters, working speed, depth, physical features of soil and straw. The research on information of sowing notches by disc and pointed coulters were carried out in stubble soil. Straw, while harvesting, was chopped and spread on stubble soil surface, or unchopped, later raked and transported out of field. Soil hardness was established before and after of coulters. Insertion of straw by sowing coulters into notch and their influence upon fractional composition of soil was investigated. Results of research schows that pointed coulters loosens more effectivelly, then disc ones. Soil hardness is lower then in notch itself, and then in contiguous soil layers. Though the work of these coulters is more difficult or they are unsuitable for stubble soil, covered by unchopped and not-well-chopped straw. Disc coulters insert more straw into sowing notch, when soil hardness is low. To reduce the amount of straw inserted in notch is possible by increasing working depth. Chopped straw in sowing notch reduces the hardness of soil small fractions (10mm). As a result chopped straw on the stubble soil surface reduces the amount of eroted parts
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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