Abstract
It is just a few years that canola (Brassica napus L.) is grown in Kerman Province, Iran, and little information is available on its response to nitrogen (N) and phosphorous (P) fertilizers. Therefore, a 2-yr field study as a split plot design was conducted at Shahid Zendehrooh Education Center in Kerman, investigating the influence of two sowing dates, early to late Oct. (main plots) and N and P fertilizers (sub-plots) in 3 replications. Canola was sown after barley and alfalfa in 1st and 2nd year of sowing respectively. In early Oct sowing of 1st yr, N and P fertilizers were applied at 300 and 50 kg ha -1 rates for a seed yield of 3.4 t ha -1 . Results indicated that in the 2nd year, alfalfa had enriched the soil with N; therefore, for a seed yield of 3.9 t ha -1 in early Oct. sowing, 200 kg N ha -1 was applied while 300 kg N ha -1 reduced the seed yield. Delaying sowing reduced total N concentration in young leaves while decreased seed, oil and protein production. It could be concluded that sowing date, fertilizers application according to soil test results and planting canola after a legume were factors affecting optimum canola yield.
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Claims 8
Claim · model-written summary
Early October sowing with 300 kg N and 50 kg P per hectare yielded 3.4 tonnes of seed per hectare in year one.
- Taxon
- CANOLA
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Brassica napus var. napust0 - Organ / stage
- seede0
- Treatment
- N and P fertilizers were applied at 300 and 50 kg ha -1 ratese0
- Outcome
- seed yielde0
- Value
- 3.4 t ha -1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“CANOLA”
e0“In early Oct sowing of 1st yr, N and P fertilizers were applied at 300 and 50 kg ha -1 rates for a seed yield of 3.4 t ha -1”
Claim · model-written summary
In year two, early October sowing with 200 kg N per hectare yielded 3.9 tonnes per hectare.
- Taxon
- CANOLABrassica napus var. napust0
- Treatment
- 200 kg N ha -1e0
- Outcome
- seed yielde0
- Value
- 3.9 t ha -1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CANOLA”
e0“for a seed yield of 3.9 t ha -1 in early Oct. sowing, 200 kg N ha -1 was applied”
Claim · model-written summary
The 300 kg N per hectare rate reduced seed yield in the second year.
- Taxon
- CANOLABrassica napus var. napust0
- Treatment
- 300 kg N ha -1e0
- Outcome
- seed yielde0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CANOLA”
e0“while 300 kg N ha -1 reduced the seed yield”
Claim · model-written summary
Delayed sowing reduced total nitrogen concentration in young leaves.
- Taxon
- CANOLABrassica napus var. napust0
- Organ / stage
- young leavese0
- Treatment
- Delaying sowinge0
- Outcome
- total N concentratione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CANOLA”
e0“Delaying sowing reduced total N concentration in young leaves”
Claim · model-written summary
Delayed sowing decreased seed production.
- Taxon
- CANOLABrassica napus var. napust0
- Treatment
- Delaying sowinge0
- Outcome
- seede0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CANOLA”
e0“Delaying sowing reduced total N concentration in young leaves while decreased seed, oil and protein production”
Claim · model-written summary
Delayed sowing decreased oil production.
- Taxon
- CANOLABrassica napus var. napust0
- Treatment
- Delaying sowinge0
- Outcome
- oile0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CANOLA”
e0“Delaying sowing reduced total N concentration in young leaves while decreased seed, oil and protein production”
Claim · model-written summary
Delayed sowing decreased protein production.
- Taxon
- CANOLABrassica napus var. napust0
- Treatment
- Delaying sowinge0
- Outcome
- protein productione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CANOLA”
e0“Delaying sowing reduced total N concentration in young leaves while decreased seed, oil and protein production”
Claim · model-written summary
The authors conclude that sowing time, soil-test-guided fertilizer, and preceding legume affect optimum yield.
- Taxon
- CANOLABrassica napus var. napust0
- Outcome
- optimum canola yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CANOLA”
e0“sowing date, fertilizers application according to soil test results and planting canola after a legume were factors affecting optimum canola yield”
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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.