Abstract
Broccoli plants were artificially defoliated at varying plant growth stages and defoliation intensities to determine bases for control decisions with lepidopterous defoliators. Low levels of defoliation (<25%) did not significantly depress head weight at any treatment date. Higher levels of defoliation severity (50%) depressed head weight when inflicted following the development of small (<2 cm) heads. Only complete defoliation (100%) consistently affected head weights. Because of the great ability of broccoli plants to compensate for leaf loss, most pre heading insecticide applications should be able to be eliminated in Minnesota without yield losses.
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Claims 4
Claim · model-written summary
Defoliation below 25% did not significantly depress head weight at any date.
- Taxon
- Broccoli
Brassica oleracea var. italicat0 - Treatment
- defoliation (<25%)e0
- Outcome
- head weighte0
- Direction
- did not significantly depresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low levels of defoliation (<25%) did not significantly depress head weight at any treatment date”
t0“Broccoli Yield”
Claim · model-written summary
50% defoliation depressed head weight after small heads had developed.
- Taxon
- BroccoliBrassica oleracea var. italicat0
- Treatment
- defoliation severity (50%)e0
- Outcome
- head weighte0
- Direction
- depressede0
- Qualifier
- following the development of small (<2 cm) headse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher levels of defoliation severity (50%) depressed head weight when inflicted following the development of small (<2 cm) heads”
t0“Broccoli Yield”
Claim · model-written summary
Complete defoliation consistently affected head weights.
- Taxon
- BroccoliBrassica oleracea var. italicat0
- Treatment
- complete defoliation (100%)e0
- Outcome
- head weightse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only complete defoliation (100%) consistently affected head weights”
t0“Broccoli Yield”
Claim · model-written summary
The authors suggest eliminating most insecticide applications before heading in Minnesota without yield loss.
- Taxon
- BroccoliBrassica oleracea var. italicat0
- Outcome
- pre heading insecticide applications should be able to be eliminatede0
- Setting
- Minnesotae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“most pre heading insecticide applications should be able to be eliminated in Minnesota without yield losses”
t0“Broccoli Yield”
The same questions in other papers
pruning · yield · Brassica oleracea (wild cabbage)Positive and negative results
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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.