Abstract
Winter rapeseed (Brassica napus L.) has potential to become an alternate oilseed crop both for edible oil production and energy agriculture (biofuel production) for Turkey. This study was conducted to determine the effect of year, N sources and doses on the yield and quality traits of winter rapeseed in a cereal system in calcareous soils over two seasons, 2000seasons, -2001seasons, and 2001seasons, -2002, in Central , in Central Anatolia. Three N sources, ammonium sulfate, ammonium nitrate and urea, were applied as hand broadcast on the soil surface at five doses (0, 50, 100, 150, and 200 kg N ha -1 ). The traits investigated were plant height, number of branches and pods per plant, number of seed per pod, thousand seed weight, seed yield, oil and protein content. There were significantly effects on seed yield, oil and protein content, and other yield components due to N sources and rates. In general, ammonium sulfate and urea gave higher seed yield than ammonium nitrate. Mean values of both seasons indicated that 100 and 150 kg N ha -1 rate increased significantly yield and quality traits with regard to other N treatments. The present results highlight the practical importance of adequate N fertilization and true N source in seed yield in winter rapeseed and suggest that ammonium sulfate at 150 kg N ha -1 will be about adequate to meet crop N requirements.
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Claims 5
Claim · model-written summary
Nitrogen source and rate significantly affected yield, oil, protein and yield components.
- Taxon
- Winter Rapeseed (Brassica napus L.)
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napust0 - Treatment
- N sources and ratese0
- Outcome
- seed yield, oil and protein contente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Winter Rapeseed (Brassica napus L.)”
e0“There were significantly effects on seed yield, oil and protein content, and other yield components due to N sources and rates.”
Claim · model-written summary
Ammonium sulfate gave higher seed yield than ammonium nitrate.
- Taxon
- Winter Rapeseed (Brassica napus L.)Brassica napust0
- Treatment
- ammonium sulfatee0
- Outcome
- seed yielde0
- Direction
- highere0
- Comparator
- ammonium nitratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Rapeseed (Brassica napus L.)”
e0“ammonium sulfate and urea gave higher seed yield than ammonium nitrate.”
Claim · model-written summary
Urea gave higher seed yield than ammonium nitrate.
- Taxon
- Winter Rapeseed (Brassica napus L.)Brassica napust0
- Treatment
- ureae0
- Outcome
- seed yielde0
- Direction
- highere0
- Comparator
- ammonium nitratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Rapeseed (Brassica napus L.)”
e0“ammonium sulfate and urea gave higher seed yield than ammonium nitrate.”
Claim · model-written summary
A rate of 100 kg N ha -1 significantly increased yield and quality versus other treatments.
- Taxon
- Winter Rapeseed (Brassica napus L.)Brassica napust0
- Treatment
- 100 and 150 kg N ha -1e0
- Outcome
- yield and quality traitse0
- Direction
- increasede0
- Comparator
- other N treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Rapeseed (Brassica napus L.)”
e0“100 and 150 kg N ha -1 rate increased significantly yield and quality traits with regard to other N treatments.”
Claim · model-written summary
A rate of 150 kg N ha -1 significantly increased yield and quality versus other treatments.
- Taxon
- Winter Rapeseed (Brassica napus L.)Brassica napust0
- Treatment
- 150 kg N ha -1e0
- Outcome
- yield and quality traitse0
- Direction
- increasede0
- Comparator
- other N treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Rapeseed (Brassica napus L.)”
e0“100 and 150 kg N ha -1 rate increased significantly yield and quality traits with regard to other N treatments.”
The same questions in other papers
ammonium sulfate · yield · Brassica napus (oilseed rape)Results differ
6 papers in the same direction as this paper · 3 in the opposite direction · 1 reporting no difference from an alternative
- positive
- no effect
- negative
7 papers more in this group
See all 11 papers →nitrogen · yield · Brassica napus (oilseed rape)Positive and negative results
197 papers in the same direction as this paper · 34 in the opposite direction · 7 reporting no difference from an alternative
- no effect
- negative
- positive
235 papers more in this group
See all 239 papers →nitrogen · quality: general · Brassica napus (oilseed rape)Results agree
3 papers in the same direction as this paper
- positive
- positive
- 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.