Abstract
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.
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Claims 8
Claim · model-written summary
Furrow sowing increased seedbed moisture over conventional sowing.
- Taxon
- Oilseed rape
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napust0 - Treatment
- Furrow sowinge0
- Outcome
- seed bed moisturee0
- Direction
- highere0
- Comparator
- conventional sowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“Furrow sowing and direct sowing provided higher seed bed moisture than conventional sowing”
t0“oilseed rape”
Claim · model-written summary
Direct sowing increased seedbed moisture over conventional sowing.
- Taxon
- Oilseed rapeBrassica napust0
- Treatment
- direct sowinge0
- Outcome
- seed bed moisturee0
- Direction
- highere0
- Comparator
- conventional sowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Furrow sowing and direct sowing provided higher seed bed moisture than conventional sowing”
t0“oilseed rape”
Claim · model-written summary
Furrow sowing produced more siliques per plant than other methods.
- Taxon
- Oilseed rapeBrassica napust0
- Treatment
- furrow sowinge0
- Outcome
- number of siliques per plante0
- Direction
- greatere0
- Comparator
- other sowing methodse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of furrow sowing resulted in the formation of a greater number of siliques per plant than in other sowing methods”
t0“oilseed rape”
Claim · model-written summary
Furrow sowing gave higher seed yield than direct sowing.
- Taxon
- Oilseed rapeBrassica napust0
- Treatment
- Furrow sowinge0
- Outcome
- seed yielde0
- Direction
- highere0
- Comparator
- direct sowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Furrow sowing made it possible to produce a higher seed yield than direct sowing”
t0“oilseed rape”
Claim · model-written summary
Furrow sowing did not significantly increase yield over conventional sowing.
- Taxon
- oilseed rapeBrassica napuse0
- Treatment
- Furrow sowinge1
- Outcome
- oilseed rape yielde0
- Direction
- did not increasee0
- Comparator
- conventional sowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the oilseed rape yield did not increase significantly in relation to conventional sowing”
e1“Furrow sowing made it possible to produce a higher seed yield than direct sowing”
Claim · model-written summary
Sowing 80–120 seeds per m2 gave significantly higher yield than 40 and 60 seeds per m2.
Verbatim
e0“The winter rapeseed yield after sowing 80–120 seeds per m2 was significantly higher than after sowing 40 and 60 seeds per m2”
Claim · model-written summary
At 40 seeds per m2, furrow sowing gave higher seed yield than conventional sowing.
- Taxon
- Oilseed rapeBrassica napust0
- Treatment
- furrow sowinge0
- Outcome
- seed yielde0
- Direction
- highere0
- Qualifier
- 40 seeds per m2e0
- Comparator
- conventional sowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When using low sowing densities (40 seeds per m2 ), furrow sowing made it possible to produce a higher seed yield than conventional sowing”
t0“oilseed rape”
Claim · model-written summary
Changing sowing methods at densities of 60–120 seeds per m2 did not demonstrably improve yield.
- Taxon
- oilseed rapeBrassica napuse0
- Treatment
- differentiating sowing methodse0
- Outcome
- oilseed rape yielde0
- Qualifier
- 60–120 seeds per m2e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The possibility of improving oilseed rape yield by differentiating sowing methods at a density of 60–120 seeds per m2 was not demonstrated”
The same questions in other papers
irrigation · yield · Brassica napus (oilseed rape)Positive and negative results
28 papers in the same direction as this paper · 12 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
38 papers more in this group
See all 42 papers →irrigation · soil: physics · Brassica napus (oilseed rape)Results agree
1 paper in the same direction as this paper
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.