Abstract
In order to investigate the effects of nitrogen (N) and zinc (Zn) fertilizers on seed yield, oil percentage, glucosinolate content, and nutrient uptake of canola (Brassica napus L. cv. Okapi), irrigated with saline and ultra-saline water, field experiments were conducted in Agriculture Research Centre of East Azarbaijan, Iran, during three consecutive years: 2011, 2012, and 2013. The experiments were carried out based on randomized complete block design arranged in factorial with three replications. The experimental treatments included N rates at three levels (0, 50, and 100 kg ha−1), Zn rates at three levels (0, 5, and 10 kg ha−1), and saline water at two levels (8 and 16 dS m−1 as saline and ultra-saline water). According to the results, N and Zn application had a significant effect on the plant height, pod number per plant, and seed yield. However, the value of these traits decreased as a result of the higher salinity level (from 8 to 16 dS m−1). From the results, the glucosinolate content was not affected by N or Zn fertilization, whereas, salinity increased the glucosinolate content from 27.51% to 30.06% when saline water and ultra-saline water were applied, respectively. In addition, the effect of ultra-saline water on the decrease in the N, phosphorous, potassium, and calcium uptake and the increase in the sodium and chlorine accumulation in canola seed was significant. However, Zn application could diminish adverse effects of salinity on phosphorus uptake. For instance, under ultra-saline water conditions, application of 10 kg ha−1 Zn increased the seed phosphorus content compared with control treatment. In general, it seems that nutrients’ supply, especially N and Zn, can be considered as an effective solution to diminish adverse effects of salinity.
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Claims 8
Claim · model-written summary
Nitrogen and zinc significantly affected plant height, pod number and seed yield.
- Taxon
- canola
.jpg?width=60)
Brassica napus var. napust0 - Treatment
- N and Zn applicatione0
- Outcome
- plant height, pod number per plant, and seed yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“N and Zn application had a significant effect on the plant height, pod number per plant, and seed yield”
t0“canola”
Claim · model-written summary
Higher salinity decreased plant height, pod number and seed yield.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- higher salinity levele0
- Outcome
- these traitse0
- Direction
- decreasede0
- Comparator
- 8 to 16 dS m−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the value of these traits decreased as a result of the higher salinity level (from 8 to 16 dS m−1)”
t0“canola”
Claim · model-written summary
Nitrogen or zinc fertilization did not affect glucosinolate content.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- N or Zn fertilizatione0
- Outcome
- glucosinolate contente0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the glucosinolate content was not affected by N or Zn fertilization”
t0“canola”
Claim · model-written summary
Salinity increased glucosinolate content from 27.51% to 30.06%.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- ultra-saline watere0
- Outcome
- glucosinolate contente0
- Direction
- increasede0
- Value
- 30.06%e0
- Qualifier
- 27.51%e0
- Comparator
- saline watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salinity increased the glucosinolate content from 27.51% to 30.06% when saline water and ultra-saline water were applied, respectively”
t0“canola”
Claim · model-written summary
Ultra-saline water significantly decreased seed uptake of N, phosphorous, potassium and calcium.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- ultra-saline watere0
- Outcome
- N, phosphorous, potassium, and calcium uptakee0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ultra-saline water on the decrease in the N, phosphorous, potassium, and calcium uptake”
t0“canola”
Claim · model-written summary
Ultra-saline water significantly increased sodium and chlorine accumulation in canola seed.
- Taxon
- canolaBrassica napus var. napuse0
- Outcome
- sodium and chlorine accumulation in canola seede0
- Direction
- increasee0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase in the sodium and chlorine accumulation in canola seed was significant”
Claim · model-written summary
Under ultra-saline water, 10 kg ha−1 Zn increased seed phosphorus content relative to control.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- application of 10 kg ha−1 Zne0
- Outcome
- seed phosphorus contente0
- Direction
- increasede0
- Comparator
- control treatmente0
- Setting
- ultra-saline water conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under ultra-saline water conditions, application of 10 kg ha−1 Zn increased the seed phosphorus content compared with control treatment”
t0“canola”
Claim · model-written summary
The authors suggest nutrient supply, especially N and Zn, to diminish adverse salinity effects.
- Taxon
- canolaBrassica napus var. napust0
- Outcome
- diminish adverse effects of salinitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nutrients’ supply, especially N and Zn, can be considered as an effective solution to diminish adverse effects of salinity”
t0“canola”
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See all 12 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.