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Type of publication: Straipsnis konferencijos medžiagoje Clarivate Analytics Web of Science ar/ir Scopus / Article in Clarivate Analytics Web of Science or Scopus DB conference proceedings (P1a)
Field of Science: Agronomija / Agronomy (A001)
Author(s): Šidlauskas, Gvidas;Pranckietienė, Irena;Dromantienė, Rūta;Pranckietis, Viktoras
Title: The effect of agronomic and climatic factors on winter oilseed rape (Brassica napus L.) root neck growth in autumn
Is part of: Rural Development 2015: Towards the transfer of knowledge, innovations and social progress: 7th international scientific conference, 19–20th November, 2015, Aleksandras Stulginskis University, Lithuania [elektroninis išteklius]: proceedings. Akademija : Aleksandras Stulginskis University, 2015
Extent: p. 1-6
Date: 2015
Note: ISSN 1822-3230 (ankstesnių spausdintų leidinių)
Keywords: Growing degree days;Number of calendar days;Nitrogen application;Stand population density
ISBN: 9786094490927
Abstract: The aim of this study was to investigate the growth habit of winter oilseed rape root neck during the vegetative period in autumn. Such information is important for better understanding of winter oilseed rape growth pattern at early stages of development with the purpose to improve over winter survival. Field trials were conducted on Endocalcari – Epihypogleyic Cambisols. For the determination of changes of winter oilseed rape root neck thickness during autumnal development the effect of planting date, seedbed nitrogen application, stand population density, number of calendar days after emergence, accumulated by plants growing degree days and interaction among these factors was tested. For the description of the root neck growth pattern Boltzmann’s growth function performing a nonlinear fitting of estimating parameters was used. Results collected in the experiments indicate that the effect of sowing date including accumulated by plants growing degree days and the number of calendar days after emergence showed much greater effect on winter oilseed rape root diameter than seeding rate or pre-plant nitrogen application. On the basis of collected data winter oilseed rape root neck growth model was developed. These studies that relate mentioned factors to fall growth of winter oilseed rape root neck are presented in the paper
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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