Effect of sowing method and density on the physical properties of the seed bed and oilseed rape yield
Vaata/ Ava
Aasta
2020Autor
Wilczewski, E.
Harasimowicz-Hermann, G.
Lemańczyk, G.
Metadata
Näita täielikku nimetuse kirjetKokkuvõte
Oilseed rape (Brassica napus L. var. napus), as a plant requiring shallow sowing, is
sensitive to water deficiency in the soil during germination. The lack of rainfall results in the
delay of emergence and a reduction in plant density before winter. The aim of the present study
was to assess the effect of various sowing methods (sowing with the furrow method – in furrows
6–8 cm deep; direct sowing into non-cultivated soil using disc coulters and conventional sowing)
on the physical properties of the seed bed and winter oilseed rape yield depending on the sowing
density (40, 60, 80, 100 and 120 seeds per m2
). The field study was carried out in 2011–2014, in
Albic Luvisols with fine sandy loam texture. Furrow sowing and direct sowing provided higher
seed bed moisture than conventional sowing. The use of furrow sowing resulted in the formation
of a greater number of siliques per plant than in other sowing methods. Furrow sowing made it
possible to produce a higher seed yield than direct sowing, however the oilseed rape yield did not
increase significantly in relation to conventional sowing. The winter rapeseed yield after sowing
80–120 seeds per m2 was significantly higher than after sowing 40 and 60 seeds per m2
. When
using low sowing densities (40 seeds per m2
), furrow sowing made it possible to produce a higher
seed yield than conventional sowing. The possibility of improving oilseed rape yield by
differentiating sowing methods at a density of 60–120 seeds per m2 was not demonstrated.