Abstract
In order to investigate the effect of nitrogen rates and splitting on oil and seed yield of canola, a field experiment was conducted at Jouybar (Iran) in 2008. The experimental was evaluated in a split-plot with two rates of nitrogen fertilizer N , N kg N ha and check (N ) and three nitrogen splitting T (50% in sowing time 100 200 0 1 1 and 50% in stem elongation (bolting) begins), T (25% in sowing time, 50% in stem elongation (bolting) begins 2 and 25% in first flower opens growth stage) and T (25% in sowing time, 25% in stem elongation (bolting) 3 begins and 25% in first flower opens and 25% in flowering ends). Results indicated that N had higher seed, 200 straw and biological yield than N , so that seed yield relation to check had increased 111and 82%, 100 respectively. T had the highest straw and biological yields ,while T had the lowest, respectively. The highest 13 and lowest oil content was obtained with T and T , respectively. The highest and the lowest nitrogen content 23 was obtained with T and T , respectively. N had greater number of pods per plant and number of seeds per 3 1 200 pod than N. T and T had the greatest and the least number of pods per plant and also number of seeds per 100 2 3 pod, respectively. In interactions, Number of pods per plant and number of seeds per pod was the greatest at N T and the least at N T. Interaction of N T and N T had the highest and the lowest seed oil content; 200 2 100 3 100 2 100 3 respectively. The interaction between N and T and between N T had the highest and the lowest seed 200 3 100 and 1 nitrogen content, respectively. The interaction between N and T and between N T had the highest and 200 2 100 and 3 the lowest seed yield, respectively. There is positive correlation between seed yield and number of pods per plant. Consequently, low nitrogen and high splitting application decreased oil content , whereas, seed yield and oil yield were increased by increasing nitrogen rates.
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Claims 15
Claim · model-written summary
Higher nitrogen rate produced higher seed, straw and biological yields.
- Taxon
- Canola
.jpg?width=60)
Brassica napus var. napust0 - Treatment
- Ne0
- Outcome
- seed, 200 straw and biological yielde0
- Direction
- highere0
- Comparator
- Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“N had higher seed, 200 straw and biological yield than N”
t0“Canola”
Claim · model-written summary
Seed yield increased by 111 and 82% relative to check for the two nitrogen rates.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- Nitrogen Ratest0
- Outcome
- seed yielde0
- Direction
- increasede0
- Value
- 111and 82%e0
- Comparator
- checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed yield relation to check had increased 111and 82%”
t0“Nitrogen Rates and Splitting on Oil Content and Seed Yield of Canola”
Claim · model-written summary
One splitting treatment gave the highest straw and biological yields.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- Te0
- Outcome
- straw and biological yieldse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T had the highest straw and biological yields”
t0“Canola”
Claim · model-written summary
Another splitting treatment gave the lowest straw and biological yields.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- Te0
- Outcome
- straw and biological yieldse0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T had the highest straw and biological yields ,while T had the lowest”
t0“Canola”
Claim · model-written summary
Splitting treatments yielded highest and lowest oil content.
- Taxon
- CanolaBrassica napus var. napust0
- Outcome
- oil contente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest 13 and lowest oil content was obtained with T and T”
t0“Canola”
Claim · model-written summary
Splitting treatments yielded highest and lowest nitrogen content.
- Taxon
- CanolaBrassica napus var. napust0
- Outcome
- nitrogen contente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest and the lowest nitrogen content 23 was obtained with T and T”
t0“Canola”
Claim · model-written summary
The higher nitrogen rate increased pods per plant and seeds per pod.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- Ne0
- Outcome
- number of pods per plant and number of seeds per 3 1 200 pode0
- Direction
- greatere0
- Comparator
- Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N had greater number of pods per plant and number of seeds per 3 1 200 pod than N”
t0“Canola”
Claim · model-written summary
Splitting treatments ranked highest and lowest for pods per plant and seeds per pod.
- Taxon
- CanolaBrassica napus var. napust0
- Outcome
- number of pods per plant and also number of seeds per 100 2 3 pode0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T and T had the greatest and the least number of pods per plant and also number of seeds per 100 2 3 pod”
t0“Canola”
Claim · model-written summary
Nitrogen by timing interactions ranked highest and lowest for pods and seeds per pod.
- Taxon
- CanolaBrassica napus var. napust0
- Outcome
- Number of pods per plant and number of seeds per pode0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Number of pods per plant and number of seeds per pod was the greatest at N T and the least at N T”
t0“Canola”
Claim · model-written summary
Nitrogen by timing interactions ranked highest and lowest for seed oil content.
- Taxon
- CanolaBrassica napus var. napust0
- Outcome
- seed oil contente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Interaction of N T and N T had the highest and the lowest seed oil content”
t0“Canola”
Claim · model-written summary
Nitrogen by timing interactions ranked highest and lowest for seed nitrogen content.
- Taxon
- CanolaBrassica napus var. napust0
- Outcome
- nitrogen contente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest and the lowest seed 200 3 100 and 1 nitrogen content”
t0“Canola”
Claim · model-written summary
Nitrogen by timing interactions ranked highest and lowest for seed yield.
- Taxon
- CanolaBrassica napus var. napust0
- Outcome
- seed yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest and 200 2 100 and 3 the lowest seed yield”
t0“Canola”
Claim · model-written summary
Seed yield correlated positively with pods per plant.
- Taxon
- CanolaBrassica napus var. napust0
- Organ / stage
- pods per plante0
- Outcome
- seed yielde0
- Direction
- positivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There is positive correlation between seed yield and number of pods per plant”
t0“Canola”
Claim · model-written summary
Low nitrogen and high splitting decreased oil content.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- low nitrogen and high splitting applicatione0
- Outcome
- oil contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low nitrogen and high splitting application decreased oil content”
t0“Canola”
Claim · model-written summary
Increasing nitrogen rates increased seed yield and oil yield.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- increasing nitrogen ratese0
- Outcome
- seed yield and oil yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed yield and oil yield were increased by increasing nitrogen rates”
t0“Canola”
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