Paper · 1998 · HortScience

Using Defoliation to Estimate Yield Losses in Cauliflower: Application in Hail Damage Assessment

Julio Muro; Ignacio Irigoyen; Carmen Lamsfus

5
claims
6
verbatim quotes
1
citations
2
research areas
✓
Open access

Abstract

Experiments were designed to assess the effects of defoliation and bending back petioles on the head mass of cauliflower ( Brassica oleracea L. var. botrytis Alef. subvar. cauliflora, cv. Matra) in the Central Ebro Valley of Spain. Treatments were applied at seven different stages during the growth cycle. Defoliation reduced final head mass, the amount of the reduction increasing with level of defoliation. Bending back the petioles produced a loss in head mass intermediate between that caused by 33% and 66% defoliation. In all four trials, mass loss was highest when defoliation occurred at a head diameter between 20 and 38 mm. Neither defoliation nor bending of the petioles appeared to influence head induction or length of the production cycle. Maximum loss of head mass (85.4% to 64.9%) occurred when cauliflower was totally defoliated at a head diameter of 20—25 mm.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 5

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Defoliation reduced cauliflower head mass, increasingly at greater defoliation levels.

Treatment
Defoliatione0
Outcome
final head masse0
Direction
reducede0
Qualifier
level of defoliatione0

Not reportedTaxonComparator

Verbatim

e0

“Defoliation reduced final head mass, the amount of the reduction increasing with level of defoliation.”

✓ located verbatim in the source · abstract, characters 307–409 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Bending back petioles caused an intermediate head mass loss relative to 33% and 66% defoliation.

Treatment
Bending back the petiolese0
Outcome
head masse0
Direction
losse0
Comparator
33% and 66% defoliatione0

Not reportedTaxon

Verbatim

e0

“Bending back the petioles produced a loss in head mass intermediate between that caused by 33% and 66% defoliation.”

✓ located verbatim in the source · abstract, characters 410–525 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Head mass loss was highest when defoliation occurred at 20 to 38 mm head diameter.

Outcome
mass losse0
Direction
higheste0
Qualifier
head diameter between 20 and 38 mme0

Not reportedTaxon

Verbatim

e0

“In all four trials, mass loss was highest when defoliation occurred at a head diameter between 20 and 38 mm.”

✓ located verbatim in the source · abstract, characters 526–634 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Neither defoliation nor bending petioles appeared to alter head induction or production cycle length.

Treatment
defoliation nor bending of the petiolese0
Outcome
head induction or length of the production cyclee0
Direction
Neithere0

Not reportedComparator

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

Brassica oleracea var. botrytis
Brassica oleracea var. botrytis · TaxonSusan Slater · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Cauliflower”

✓ located verbatim in the source · title, characters 46–57 · show in text ↑
e0

“Neither defoliation nor bending of the petioles appeared to influence head induction or length of the production cycle.”

✓ located verbatim in the source · abstract, characters 635–754 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Total defoliation at 20—25 mm head diameter caused maximum head mass loss of 85.4% to 64.9%.

Treatment
totally defoliatede0
Outcome
loss of head masse0
Direction
Maximum losse0
Value
85.4% to 64.9%e0
Qualifier
head diameter of 20—25 mme0

Not reportedComparator

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

Brassica oleracea var. botrytis
Brassica oleracea var. botrytis · TaxonSusan Slater · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Maximum loss of head mass (85.4% to 64.9%) occurred when cauliflower was totally defoliated at a head diameter of 20—25 mm.”

✓ located verbatim in the source · abstract, characters 755–878 · show in text ↑

pruning · yield · Brassica oleracea (wild cabbage)Positive and negative results

18 papers: 8 positive, 10 negative or no effect

9 papers in the same direction as this paper · 8 in the opposite direction

  1. positive
  2. positive
  3. positive

14 papers more in this group

See all 18 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.