Abstract
SummaryThe study investigated the response of shallots to different levels of defoliation at different growth stages. The effect of cutting off 50%, 75%, and 100% of leaves of four, six, and eight week old shallot plants was assessed. Defoliation at an early stage of growth, i.e. three-leaf stage imposed stressful conditions, and initially reduced growth rate. Whilst lateral bud numbers increased with the severity of defoliation in four week old shallots, lateral shoots and bulb number decreased. There was significant delay in maturity and a reduction in bulb size and weight in shallots defoliated at six weeks. Six weeks old shallots defoliated at 100% recorded the lowest sucrose content of 6%. Numbers of fresh bulb scales was significantly decreased with increasing defoliation and growth. The effect of defoliation on growth, yield and quality depended on the growth stage of the crop. However, 50% defoliation at all growth stages gave appreciable yield and bulb quality compared with the undefoliated control in this trial.
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Claims 11
Claim · model-written summary
Early defoliation initially reduced shallot growth rate.
- Taxon
- shallots
Allium cepa var. aggregatumt0 - Organ / stage
- three-leaf stagee0
- Treatment
- Defoliatione0
- Outcome
- growth ratee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Defoliation at an early stage of growth, i.e. three-leaf stage imposed stressful conditions, and initially reduced growth rate.”
t0“shallots”
Claim · model-written summary
Greater defoliation increased lateral bud numbers in four week old shallots.
- Taxon
- shallotsAllium cepa var. aggregatume0
- Organ / stage
- four week olde0
- Treatment
- severity of defoliatione0
- Outcome
- lateral bud numberse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lateral bud numbers increased with the severity of defoliation in four week old shallots”
Claim · model-written summary
Defoliation decreased lateral shoot numbers in four week old shallots.
- Taxon
- shallotsAllium cepa var. aggregatume0
- Organ / stage
- four week olde0
- Treatment
- severity of defoliatione0
- Outcome
- lateral shootse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lateral bud numbers increased with the severity of defoliation in four week old shallots, lateral shoots and bulb number decreased”
Claim · model-written summary
Defoliation decreased bulb number in four week old shallots.
- Taxon
- shallotsAllium cepa var. aggregatume0
- Organ / stage
- four week olde0
- Treatment
- severity of defoliatione0
- Outcome
- bulb numbere0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lateral bud numbers increased with the severity of defoliation in four week old shallots, lateral shoots and bulb number decreased”
Claim · model-written summary
Six week defoliation significantly delayed maturity.
- Taxon
- shallotsAllium cepa var. aggregatume0
- Treatment
- defoliated at six weekse0
- Outcome
- maturitye0
- Direction
- delaye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant delay in maturity and a reduction in bulb size and weight in shallots defoliated at six weeks”
Claim · model-written summary
Six week defoliation reduced bulb size.
- Taxon
- shallotsAllium cepa var. aggregatume0
- Treatment
- defoliated at six weekse0
- Outcome
- bulb sizee0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant delay in maturity and a reduction in bulb size and weight in shallots defoliated at six weeks”
Claim · model-written summary
Six week defoliation reduced bulb weight.
- Taxon
- shallotsAllium cepa var. aggregatume0
- Treatment
- defoliated at six weekse0
- Outcome
- weighte0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant delay in maturity and a reduction in bulb size and weight in shallots defoliated at six weeks”
Claim · model-written summary
Complete defoliation at six weeks gave the lowest sucrose content, 6%.
- Taxon
- shallotsAllium cepa var. aggregatume0
- Organ / stage
- Six weeks olde0
- Treatment
- defoliated at 100%e0
- Outcome
- sucrose contente0
- Direction
- loweste0
- Value
- 6%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Six weeks old shallots defoliated at 100% recorded the lowest sucrose content of 6%.”
Claim · model-written summary
Increasing defoliation and growth significantly reduced the number of fresh bulb scales.
- Taxon
- shallotsAllium cepa var. aggregatumt0
- Treatment
- increasing defoliatione0
- Outcome
- Numbers of fresh bulb scalese0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Numbers of fresh bulb scales was significantly decreased with increasing defoliation and growth.”
t0“shallots”
Claim · model-written summary
Half defoliation at all growth stages gave appreciable yield compared with undefoliated controls.
- Taxon
- shallotsAllium cepa var. aggregatumt0
- Treatment
- 50% defoliation at all growth stagese0
- Outcome
- yielde0
- Direction
- appreciablee0
- Comparator
- undefoliated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“50% defoliation at all growth stages gave appreciable yield and bulb quality compared with the undefoliated control”
t0“shallots”
Claim · model-written summary
Half defoliation at all growth stages gave appreciable bulb quality compared with undefoliated controls.
- Taxon
- shallotsAllium cepa var. aggregatumt0
- Treatment
- 50% defoliation at all growth stagese0
- Outcome
- bulb qualitye0
- Direction
- appreciablee0
- Comparator
- undefoliated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“50% defoliation at all growth stages gave appreciable yield and bulb quality compared with the undefoliated control”
t0“shallots”
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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.