Abstract
Abstract Yield, color, petiole-blade ratio, and percentage of fiber and Ν were evaluated for collards ( Brassica oleracea L. var. acephala ), grown under field conditions. The yield, color, and Ν percentage in tops were increased as the Ν level was increased from 40 to 160 lb N/A. A split application of 80 1b. N/A at planting and 80 1b 20 days after planting gave the best yield. Best color was obtained at seeding rates of 2 or 4 1b/A. Leaf color decreased as the seeding rate increased from 2 to 8 1b/A. The petiole-blade ratio and fiber percentage were not significantly affected by the seeding rate or level and source of N. It was possible to obtain equally good yields and color with NaNO 3 , (NH 4 ) 2 SO 4 , or NH 4 NO 3 .
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Yield, color and nitrogen percentage in collard tops increased with nitrogen level from 40 to 160 lb N/A.
- Taxon
- collards
Brassica oleracea var. viridise1 - Treatment
- Ν level was increased from 40 to 160 lb N/Ae0
- Outcome
- yield, color, and Ν percentage in topse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The yield, color, and Ν percentage in tops were increased as the Ν level was increased from 40 to 160 lb N/A”
e1“collards ( Brassica oleracea L. var. acephala )”
Claim · model-written summary
Split nitrogen application gave the best yield.
- Taxon
- collards
Brassica oleracea var. viridise1 - Treatment
- split application of 80 1b. N/A at planting and 80 1b 20 days after plantinge0
- Outcome
- yielde0
- Direction
- beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“A split application of 80 1b. N/A at planting and 80 1b 20 days after planting gave the best yield”
e1“collards ( Brassica oleracea L. var. acephala )”
Claim · model-written summary
Seeding rates of 2 or 4 lb/A produced the best color.
- Taxon
- collards
Brassica oleracea var. viridise1 - Treatment
- seeding rates of 2 or 4 1b/Ae0
- Outcome
- colore0
- Direction
- Beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Best color was obtained at seeding rates of 2 or 4 1b/A”
e1“collards ( Brassica oleracea L. var. acephala )”
Claim · model-written summary
Leaf color declined as seeding rate rose from 2 to 8 lb/A.
- Taxon
- collards
Brassica oleracea var. viridise1 - Treatment
- seeding rate increased from 2 to 8 1b/Ae0
- Outcome
- Leaf colore0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Leaf color decreased as the seeding rate increased from 2 to 8 1b/A”
e1“collards ( Brassica oleracea L. var. acephala )”
Claim · model-written summary
Petiole-blade ratio and fiber percentage were not significantly affected by seeding rate or nitrogen level and source.
- Taxon
- collards
Brassica oleracea var. viridise1 - Treatment
- seeding rate or level and source of Ne0
- Outcome
- petiole-blade ratio and fiber percentagee0
- Direction
- not significantly affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The petiole-blade ratio and fiber percentage were not significantly affected by the seeding rate or level and source of N”
e1“collards ( Brassica oleracea L. var. acephala )”
Claim · model-written summary
Three nitrogen sources produced equally good yields and color.
- Taxon
- collards
Brassica oleracea var. viridise1 - Treatment
- NaNO 3 , (NH 4 ) 2 SO 4 , or NH 4 NO 3e0
- Outcome
- yields and colore0
- Direction
- equally goode0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“equally good yields and color with NaNO 3 , (NH 4 ) 2 SO 4 , or NH 4 NO 3”
e1“collards ( Brassica oleracea L. var. acephala )”
The same questions in other papers
nitrogen · yield · Brassica oleracea (wild cabbage)Results differ
143 papers in the same direction as this paper · 17 in the opposite direction · 3 reporting no difference from an alternative
- negative
- no effect
- no effect
160 papers more in this group
See all 164 papers →nanoparticle · quality: postharvest · Brassica oleracea (wild cabbage)Positive and negative results
4 in the opposite direction
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →density · quality: postharvest · Brassica oleracea (wild cabbage)Positive and negative results
8 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
6 papers more in this group
See all 10 papers →nitrogen · quality: postharvest · Brassica oleracea (wild cabbage)Positive and negative results
33 papers in the same direction as this paper · 6 in the opposite direction
- no effect
- no effect
- negative
36 papers more in this group
See all 40 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.