Document Type
Peer-Review Article
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.
Recommended Citation
Cranshaw, W. S. and Default, R. J.
1985.
"Effect Of Artificial Defoliation On Broccoli Yield,"
The Great Lakes Entomologist, vol 18
(1)
: 55-57
DOI: https://doi.org/10.22543/0090-0222.2584
Available at:
https://scholar.valpo.edu/tgle/vol18/iss1/12