Abstract
SummaryThe effects of 2,4-D, GA and their combinations on pre-harvest fruit drop and the duration of the harvest season of Marsh Seedless grapefruit were evaluated. Pre-harvest fruit drop increased as the season advanced and had two main peaks: in August and in December, about 10 and 14 months respectively after fruit setting. Total accumulated fruit drop amounted to 34% during the ten months after treatment; of this amount 6% occurred in the first five months and 28% in the latter five months. When applied in May all treatments reduced fruit drop to various degrees, the combined 2,4-D+GA sprays being most effective. The combined sprays were also most effective in delaying rind aging which was related to rind pigments and resistance to puncture, thus extending the harvest season by up to ten months without any unfavourable effects on juice quality. However, a second 2,4-D spray in July had no effect on fruit drop or harvest extension. None of the treatments used affected the alternate cropping pattern of grapefruit.
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Claims 8
Claim · model-written summary
Pre-harvest fruit drop increased through the season and peaked in August and December.
- Taxon
- grapefruit
_Pompelino_Grapefruit_002.jpg?width=60)
Citrus ×paradisit0 - Outcome
- Pre-harvest fruit drope0
- Direction
- increasede0
- Value
- 10 and 14 monthse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Pompelino_Grapefruit_002.jpg?width=500)
Verbatim
e0“Pre-harvest fruit drop increased as the season advanced and had two main peaks: in August and in December, about 10 and 14 months respectively after fruit setting.”
t0“grapefruit”
Claim · model-written summary
Accumulated fruit drop was 34% in ten months after treatment, with 6% in the first five months and 28% in the latter five.
- Taxon
- grapefruitCitrus ×paradisit0
- Outcome
- Total accumulated fruit drope0
- Value
- 34%e0
- Qualifier
- 6% occurred in the first five months and 28% in the latter five monthse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total accumulated fruit drop amounted to 34% during the ten months after treatment; of this amount 6% occurred in the first five months and 28% in the latter five months.”
t0“grapefruit”
Claim · model-written summary
May applications of all treatments reduced fruit drop; combined 2,4-D+GA sprays were most effective.
- Taxon
- grapefruitCitrus ×paradisit0
- Treatment
- combined 2,4-D+GA sprayse0
- Outcome
- fruit drope0
- Direction
- reducede0
- Comparator
- all treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When applied in May all treatments reduced fruit drop to various degrees, the combined 2,4-D+GA sprays being most effective.”
t0“grapefruit”
Claim · model-written summary
Combined sprays most effectively delayed rind aging.
- Taxon
- grapefruitCitrus ×paradisit0
- Treatment
- combined sprayse0
- Outcome
- rind aginge0
- Direction
- delayinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combined sprays were also most effective in delaying rind aging which was related to rind pigments and resistance to puncture, thus extending the harvest season by up to ten months without any unfavourable effects on juice quality.”
t0“grapefruit”
Claim · model-written summary
Combined sprays extended the harvest season by up to ten months.
- Taxon
- grapefruitCitrus ×paradisit0
- Treatment
- combined sprayse0
- Outcome
- harvest seasone0
- Direction
- extendinge0
- Value
- up to ten monthse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combined sprays were also most effective in delaying rind aging which was related to rind pigments and resistance to puncture, thus extending the harvest season by up to ten months without any unfavourable effects on juice quality.”
t0“grapefruit”
Claim · model-written summary
Combined sprays had no unfavourable effect on juice quality.
- Taxon
- grapefruitCitrus ×paradisit0
- Treatment
- combined sprayse0
- Outcome
- juice qualitye0
- Direction
- without any unfavourable effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combined sprays were also most effective in delaying rind aging which was related to rind pigments and resistance to puncture, thus extending the harvest season by up to ten months without any unfavourable effects on juice quality.”
t0“grapefruit”
Claim · model-written summary
A second 2,4-D spray in July had no effect on fruit drop or harvest extension.
- Taxon
- grapefruitCitrus ×paradisit0
- Treatment
- second 2,4-D spray in Julye0
- Outcome
- fruit drop or harvest extensione0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, a second 2,4-D spray in July had no effect on fruit drop or harvest extension.”
t0“grapefruit”
Claim · model-written summary
Treatments did not affect the alternate cropping pattern.
- Taxon
- grapefruitCitrus ×paradisie0
- Treatment
- treatments usede0
- Outcome
- alternate cropping patterne0
- Direction
- None of the treatments used affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“None of the treatments used affected the alternate cropping pattern of grapefruit.”
The same questions in other papers
2,4-D · yield · Citrus x paradisi (grapefruit)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
1 paper more in this group
See all 5 papers →Gibberellic acid · yield · Citrus x paradisi (grapefruit)Results agree
2 papers in the same direction as this paper
- positive
- positive
application · yield · Citrus x paradisi (grapefruit)Positive and negative results
4 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- no effect
- no effect
5 papers more in this group
See all 9 papers →application · quality: general · Citrus x paradisi (grapefruit)Results agree
1 paper in the same direction as this paper
- no effect
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.