Abstract
This study was conducted using a randomized complete block design with eight treatments and three replications in 2017–2019 to investigate the effects of nitrogen (N) and sulfur (S) on the seed yield, protein content, oil content, and fatty acid composition of canola ( Brassica napus L.). The experiment involved two levels of N application, N1 (180 kg N ha –1 from urea source) and N2 (240 kg N ha –1 from urea source), and four levels of S application, including S0 (control, without S application), S1 (200 kg ha –1 S powder inoculated with Thiobacillus sp. as 2% w/w), S2 (100 kg S ha –1 from ammonium sulfate), and S3 (100 kg S ha –1 from gypsum). The experiment was carried out in three replications to ensure the statistical robustness of the results. The results revealed some exciting findings, as N application had a significant effect on seed yield, plant N, and seed N. The highest seed yield (4139 kg ha –1 ) was obtained with the application of 240 kg N ha –1 . However, an inverse relationship was observed between the amount of oil in canola and increasing nitrogen levels, indicating a decreasing trend. The sulfur treatments also had a significant effect on seed yield, oil content, protein content, and leaf nitrogen. The highest values of these parameters were obtained from S1 treatment. Therefore, what’s the best combination of N and S for growing canola? The researchers recommend using the N2S1 treatment combination in regions with soil and climate conditions similar to that of Shahrekord. The study highlights the importance of simultaneous fertilization of N and S for optimizing canola fertility, and the findings suggest applying 240 kg N/ha and 200 kg S/ha powder inoculated with Thiobacillus sp. bacteria for the best results. These results highlight the importance of considering both N and S fertilization in canola fertility programs to achieve the best possible yield and quality.
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Claims 7
Claim · model-written summary
Seed yield was highest (4139 kg/ha) with application of 240 kg N/ha.
- Taxon
- Canola
.jpg?width=60)
Brassica napus var. napust0 - Treatment
- application of 240 kg N ha –1e1
- Outcome
- seed yielde1
- Direction
- higheste1
- Value
- 4139 kg ha –1e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Canola (Brassica napus L.)”
e1“The highest seed yield (4139 kg ha –1 ) was obtained with the application of 240 kg N ha –1”
Claim · model-written summary
Nitrogen application had a significant effect on seed yield, plant N and seed N.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- N applicatione2
- Outcome
- seed yield, plant N, and seed Ne2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Canola (Brassica napus L.)”
e2“N application had a significant effect on seed yield, plant N, and seed N”
Claim · model-written summary
Canola oil content showed a decreasing trend as nitrogen levels increased.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- increasing nitrogen levelse3
- Outcome
- amount of oile3
- Direction
- decreasinge3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Canola (Brassica napus L.)”
e3“an inverse relationship was observed between the amount of oil in canola and increasing nitrogen levels, indicating a decreasing trend”
Claim · model-written summary
Sulfur treatments had a significant effect on seed yield, oil content and protein content.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- sulfur treatmentse4
- Outcome
- seed yield, oil content, protein contente4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Canola (Brassica napus L.)”
e4“The sulfur treatments also had a significant effect on seed yield, oil content, protein content, and leaf nitrogen”
Claim · model-written summary
Sulfur treatments had a significant effect on leaf nitrogen.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- sulfur treatmentse4
- Outcome
- leaf nitrogene4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Canola (Brassica napus L.)”
e4“The sulfur treatments also had a significant effect on seed yield, oil content, protein content, and leaf nitrogen”
Claim · model-written summary
The S1 treatment (200 kg S/ha as Thiobacillus-inoculated powder) gave the highest seed yield, oil content, protein content and leaf nitrogen.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- S1 treatmente6
- Interactor
- Thiobacillus sp.Thiobacilluse5other
- Outcome
- seed yield, oil content, protein content, and leaf nitrogene4
- Direction
- higheste6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Canola (Brassica napus L.)”
e5“S1 (200 kg ha –1 S powder inoculated with Thiobacillus sp. as 2% w/w)”
e6“The highest values of these parameters were obtained from S1 treatment”
e4“The sulfur treatments also had a significant effect on seed yield, oil content, protein content, and leaf nitrogen”
Claim · model-written summary
The authors recommend the N2S1 combination for regions with soil and climate similar to Shahrekord.
- Taxon
- CanolaBrassica napus var. napust0
- Outcome
- N2S1 treatment combinatione7
- Setting
- regions with soil and climate conditions similar to that of Shahrekorde7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Canola (Brassica napus L.)”
e7“The researchers recommend using the N2S1 treatment combination in regions with soil and climate conditions similar to that of Shahrekord”
The same questions in other 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
- positive
- positive
- positive
235 papers more in this group
See all 239 papers →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.