Abstract
New artichoke varieties has been released using seed-systems. Such seed-systems require research efforts to generate guidelines principles for producing high-quality transplants. The main aim of this research was to establish the optimum nitrogen source and rate effect on the quality of artichoke cv. Concerto transplants during a nursery period of 44 days. Transplants were produced using peat as substrate in polystyrene trays with 60 holes, which have been left floating during 30 minutes in a container purposed to performing the subirrigation process. On May 18, at the first true-leaf stage, started the subirrigation - three times per week - of the seedlings by using two N-sources (ammonium nitrate and urea) and 4 rates (50, 125, 200, 275 mg L-1) in the nutrient solution. All the assessments herein reported were done at the 4th true-leaf stage (June 30). Transplant height, leaf area, and fresh weight was higher with urea than ammonium nitrate. With N dose increasing, height, number of leaves, leaf area, fresh weight, specific leaf area (SLA) and SPAD index increased. Leaf number was higher at 200 mg L-1, while dry matter content was at 50 mg L-1. The highest N-rate had a positive effect on height, leaf area, fresh weight, and SLA of the transplants, altogether being well-fitted by a cubic relationship between these variables and N-dose. Alternatively, SPAD index suited well a linear relationship to N-dose. No interaction between N-dose and source was found. To produce high quality artichoke transplants can be appropriate to choose urea as N-source with a rate between 200-275 mg L-1.
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Claims 9
Claim · model-written summary
Urea gave higher transplant height, leaf area and fresh weight than ammonium nitrate.
- Taxon
- ARTICHOKE
Cynara cardunculus var. scolymust0 - Treatment
- ureae0
- Outcome
- Transplant height, leaf area, and fresh weighte0
- Direction
- highere0
- Comparator
- ammonium nitratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PRODUCING ARTICHOKE CV.”
e0“Transplant height, leaf area, and fresh weight was higher with urea than ammonium nitrate”
Claim · model-written summary
Increasing N dose increased transplant height, number of leaves and leaf area.
- Taxon
- ARTICHOKECynara cardunculus var. scolymust0
- Treatment
- N dosee0
- Outcome
- height, number of leaves, leaf areae0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PRODUCING ARTICHOKE CV.”
e0“With N dose increasing, height, number of leaves, leaf area, fresh weight, specific leaf area (SLA) and SPAD index increased”
Claim · model-written summary
Increasing N dose increased fresh weight, specific leaf area and SPAD index of transplants.
- Taxon
- ARTICHOKECynara cardunculus var. scolymust0
- Treatment
- N dosee0
- Outcome
- fresh weight, specific leaf area (SLA) and SPAD indexe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PRODUCING ARTICHOKE CV.”
e0“With N dose increasing, height, number of leaves, leaf area, fresh weight, specific leaf area (SLA) and SPAD index increased”
Claim · model-written summary
Leaf number was higher at the 200 mg L-1 nitrogen rate.
- Taxon
- ARTICHOKECynara cardunculus var. scolymust0
- Treatment
- 200 mg L-1e0
- Outcome
- Leaf numbere0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PRODUCING ARTICHOKE CV.”
e0“Leaf number was higher at 200 mg L-1”
Claim · model-written summary
Dry matter content was reported at the 50 mg L-1 nitrogen rate.
- Taxon
- ARTICHOKECynara cardunculus var. scolymust0
- Treatment
- 50 mg L-1e0
- Outcome
- dry matter contente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PRODUCING ARTICHOKE CV.”
e0“dry matter content was at 50 mg L-1”
Claim · model-written summary
Height, leaf area, fresh weight and SLA of the transplants were well fitted by a cubic relationship with N dose.
- Taxon
- ARTICHOKECynara cardunculus var. scolymust0
- Treatment
- N-dosee0
- Outcome
- height, leaf area, fresh weight, and SLAe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PRODUCING ARTICHOKE CV.”
e0“The highest N-rate had a positive effect on height, leaf area, fresh weight, and SLA of the transplants, altogether being well-fitted by a cubic relationship between these variables and N-dose”
Claim · model-written summary
SPAD index was well fitted by a linear relationship with N dose.
- Taxon
- ARTICHOKECynara cardunculus var. scolymust0
- Treatment
- N-dosee0
- Outcome
- SPAD indexe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PRODUCING ARTICHOKE CV.”
e0“Alternatively, SPAD index suited well a linear relationship to N-dose”
Claim · model-written summary
No interaction between N dose and N source was found.
- Taxon
- ARTICHOKECynara cardunculus var. scolymust0
- Outcome
- interaction between N-dose and sourcee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PRODUCING ARTICHOKE CV.”
e0“No interaction between N-dose and source was found”
Claim · model-written summary
Urea as N source at 200-275 mg L-1 is appropriate for producing high quality artichoke transplants.
- Taxon
- ARTICHOKECynara cardunculus var. scolymust0
- Treatment
- urea as N-source with a rate between 200-275 mg L-1e0
- Outcome
- produce high quality artichoke transplantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PRODUCING ARTICHOKE CV.”
e0“To produce high quality artichoke transplants can be appropriate to choose urea as N-source with a rate between 200-275 mg L-1”
The same questions in other papers
nitrogen · growth · Cynara cardunculus (cardoon)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
1 paper more in this group
See all 5 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.