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Type of publication: Straipsnis nerecenzuojamoje Lietuvos konferencijos medžiagoje / Article in non-peer-reviewed Lithuanian conference proceedings (P2c)
Field of Science: Agronomija / Agronomy (A001)
Author(s): Miknevičius, Ignas
Contributor(s): Jodaugienė, Darija
Title: Ilgalaikio skirtingo intensyvumo žemės dirbimo įtaka vasarinių miežių agrocenozės piktžolėtumui
Other Title: Influence of soil tillage intensity on weed infestation in spring barley crop
Is part of: Jaunasis mokslininkas 2015 [elektroninis išteklius] : studentų mokslinės konferencijos pranešimų rinkinys, 2015 m. balandžio 23 d. / Aleksandro Stulginskio universitetas. Agronomijos fakultetas. Akademija, 2015
Extent: p. 25-27
Date: 2015
ISBN: 9986948681
Abstract: Field experiment was carried out since 1988 as follows tillage systems. The experiment was carried out in Aleksandras Stulginskis university xperimental Station. The experiment was conducted in 2014. It was determined that tillage system had no significant effect on the number of weed seedlings. Various cropping systems had no significant effect on weed infestation in spring barley that was identified before harvesting. Comparing deep loosening (GP), shallow loosening (SP) and the option which was sown in an uncultivated soil (ND) that was conventionally plowed (control) (IA), weeds grew by 1.1; 1.5 and 1.4 times, accordingly 10.9 units per m-2, 47.9 units m-2 and 35.9 units m-2. That makes minor differences. Comparing the impact of different tillage intensities on the mass of weeds revealed fundamental differences. The minimum weight of weeds was in shallow ploughing at the depth of 12–15 cm (SA): 12 g m-2, which is 2.3 g m-2less than in the conventional ploughing (IA). The maximum weight of weeds were in uncultivated soil ND): 221.9 g m-2, and it is 15.5 times more than in the deep plowed soil (control). This is a crucial indicator with the probability level of 99.9. Such large difference in the mass of weeds was due to the composition of predominant weed species. Dominant weed species in the version which has been subject to direct dissemination were: apera (Apera spica-venti), couch grass (Elytrigia repens) and other weeds with high biomass
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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