Some maple producers have reported low sugar maple regeneration that could be related to the presence of worms. This second wave of invasion by Asian earthworms is of concern to forest ecologists because of its potential disruption to the forest.
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We found significant populations of snake worms devouring the organic matter, causing soil conditions that discouraged growth of understory native plant species. We are looking at their distribution in maple stands throughout the region relative to forest management practices, and assessing their impact on understory diversity, maple regeneration and various soil characteristics.
This pictorial guide provides basic information for identifying the Asian longhorned beetle, its injury characteristics, and its common host trees. The guide will help users detect the beetle in both urban and forested settings.
If you have a sugarbush in the Northeast, you may have noticed brown scale insects, sticky dripping honeydew, and black sooty mold on your sugar maple leaves in 2005 and 2006. That most likely was European fruit lecanium scale, Parthenolecanium corni.
Pear thrips surfaced as a new pest of sugar maple, Acer saccharum Marsh., in 1979. Damage from this insect occurs intermittently, and threatens the long-term health of maple trees throughout the northeastern United States and parts of Canada. A method for sampling forest soil to determine pear thrips populations is described that is suitable for sugarmakers. This method requires a minimum of equipment and time, and provides sugarmakers with a reliable estimate of the number of thrips in their sugar_bushes. By sampling and assessing damage annually, sugarmakers will gain an understanding of the relationship between thrips population levels and damage in their stands. Based on this information, potential damage in the spring can be estimated. Sample results are obtained before tapping so sugarmakers can adjust their management practices, such as the number of taps per tree, to minimize stress on trees when damage is likely.
The timing and duration of budbreak of forest trees may be affected by biotic and abiotic factors. This manual provides a visual method for monitoring bud development of mature trees of sugar maple, Acer saccharum Marsh., from the ground. A spotting scope with a 15-45x zoom lens was used for bud rating. The user is supplied with close-up photographs and a brief description of each bud stage. Sample data sheets are also provided. This protocol is currently used in the Vermont Forest Health Monitoring Program.