Paper · 2008 · DOAJ (DOAJ: Directory of Open Access Journals)

THE EFFECT OF THE PERIOD OF WEED CONTROL AND DIFFERENTIATED NITROGEN FERTILIZATION ON YIELDING OF WHITE HEAD CABBAGE

E. Kołota; P. Chohura

10
claims
10
verbatim quotes
5
citations
3
research areas
✓
Open access · cc-by

Abstract

In the field experiment with cabbage cv. ‘Menza F1’ fertilized with 150 and 250 kg N·ha-1, the first weeding started 3, 6, 9, 12 weeks after transplanting, including unweeded control. Higher dose of nitrogen especially in treatments with delayed weed control affected in significant increase of marketable yield, as well as the mean weight of cabbage heads in comparison to the dose of 150 N·ha-1. The highest yielding was recorded in treatment where the first weeding was conducted 3 weeks after transplanting. The delay of this operation to 6, 9, and 12 weeks after transplanting caused the decrease in marketable yield by 16.0%, 33.1% and 48.4%, respectively. The dose of 250 N·ha-1 contributed to the slight decrease of dry matter, total and reducing sugar contents, and higher accumulation of nitrates in edible parts of cabbage heads. Late start of weed removal was disadvantageous for dry matter and sugars content and caused higher nitrates accumulation in cabbage.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 10

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Higher nitrogen significantly increased marketable yield.

Treatment
Higher dose of nitrogene0
Outcome
marketable yielde0
Direction
increasee0
Comparator
150 N·ha-1e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. capitata
Brassica oleracea var. capitata · TaxonThamizhpparithi Maari · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Higher dose of nitrogen especially in treatments with delayed weed control affected in significant increase of marketable yield, as well as the mean weight of cabbage heads in comparison to the dose of 150 N·ha-1”

✓ located verbatim in the source · abstract, characters 184–396 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Higher nitrogen significantly increased cabbage head weight.

Treatment
Higher dose of nitrogene0
Outcome
mean weight of cabbage headse0
Direction
increasee0
Comparator
150 N·ha-1e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. capitata
Brassica oleracea var. capitata · TaxonThamizhpparithi Maari · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Higher dose of nitrogen especially in treatments with delayed weed control affected in significant increase of marketable yield, as well as the mean weight of cabbage heads in comparison to the dose of 150 N·ha-1”

✓ located verbatim in the source · abstract, characters 184–396 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Weeding three weeks after transplanting yielded highest.

Treatment
first weeding was conducted 3 weeks after transplantinge0
Outcome
yieldinge0
Direction
higheste0

Not reportedTaxon

Verbatim

e0

“The highest yielding was recorded in treatment where the first weeding was conducted 3 weeks after transplanting”

✓ located verbatim in the source · abstract, characters 398–510 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Weeding at six weeks reduced marketable yield by 16.0%.

Treatment
6e0
Outcome
marketable yielde0
Direction
decreasee0
Value
16.0%e0

Not reportedTaxonComparator

Verbatim

e0

“The delay of this operation to 6, 9, and 12 weeks after transplanting caused the decrease in marketable yield by 16.0%, 33.1% and 48.4%, respectively”

✓ located verbatim in the source · abstract, characters 512–661 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Weeding at nine weeks reduced marketable yield by 33.1%.

Treatment
9e0
Outcome
marketable yielde0
Direction
decreasee0
Value
33.1%e0

Not reportedTaxonComparator

Verbatim

e0

“The delay of this operation to 6, 9, and 12 weeks after transplanting caused the decrease in marketable yield by 16.0%, 33.1% and 48.4%, respectively”

✓ located verbatim in the source · abstract, characters 512–661 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Weeding at twelve weeks reduced marketable yield by 48.4%.

Treatment
12 weeks after transplantinge0
Outcome
marketable yielde0
Direction
decreasee0
Value
48.4%e0

Not reportedTaxonComparator

Verbatim

e0

“The delay of this operation to 6, 9, and 12 weeks after transplanting caused the decrease in marketable yield by 16.0%, 33.1% and 48.4%, respectively”

✓ located verbatim in the source · abstract, characters 512–661 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

The 250 N dose slightly decreased dry matter and sugar content.

Treatment
250 N·ha-1e0
Outcome
dry matter, total and reducing sugar contentse0
Direction
decreasee0

Not reportedTaxonComparator

Verbatim

e0

“The dose of 250 N·ha-1 contributed to the slight decrease of dry matter, total and reducing sugar contents”

✓ located verbatim in the source · abstract, characters 663–769 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

The 250 N dose increased nitrate accumulation.

Treatment
250 N·ha-1e0
Outcome
accumulation of nitratese0
Direction
highere0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. capitata
Brassica oleracea var. capitata · TaxonThamizhpparithi Maari · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The dose of 250 N·ha-1 contributed to the slight decrease of dry matter, total and reducing sugar contents, and higher accumulation of nitrates in edible parts of cabbage heads”

✓ located verbatim in the source · abstract, characters 663–839 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Late weed removal reduced dry matter and sugars.

Treatment
Late start of weed removale0
Outcome
dry matter and sugars contente0
Direction
disadvantageouse0

Not reportedTaxonComparator

Verbatim

e0

“Late start of weed removal was disadvantageous for dry matter and sugars content”

✓ located verbatim in the source · abstract, characters 841–921 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Late weed removal increased nitrate accumulation.

Treatment
Late start of weed removale0
Outcome
nitrates accumulatione0
Direction
highere0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. capitata
Brassica oleracea var. capitata · TaxonThamizhpparithi Maari · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Late start of weed removal was disadvantageous for dry matter and sugars content and caused higher nitrates accumulation in cabbage”

✓ located verbatim in the source · abstract, characters 841–972 · show in text ↑

nitrogen · organism · Brassica oleracea (wild cabbage)Positive and negative results

8 papers: 5 positive, 3 negative or no effect

4 papers in the same direction as this paper · 3 in the opposite direction

  1. negative
  2. no effect
  3. negative

4 papers more in this group

See all 8 papers →

transplanting · quality: postharvest · Brassica oleracea (wild cabbage)Positive and negative results

13 papers: 7 positive, 6 negative or no effect

5 papers in the same direction as this paper · 7 in the opposite direction

  1. positive
  2. positive
  3. positive

9 papers more in this group

See all 13 papers →

nitrogen · quality: postharvest · Brassica oleracea (wild cabbage)Positive and negative results

40 papers: 34 positive, 6 negative or no effect

33 papers in the same direction as this paper · 6 in the opposite direction

  1. no effect
  2. no effect
  3. 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.