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MANAGEMENT PRIORITIES <br />PRIORITY 1: Invasive woody removal on all non -cropland units <br />Woody Plant Removal <br />Since this is such a large area (roughly 165 acres), clearing non-native, invasive brush may <br />have to be done in stages. Then the site should be assessed for further woody removal, <br />including native species. Primary species to remove are common buckth n, Tartarian <br />honeysuckle, black locust and Siberian elm. Cut stumps should be trea . h a triclopyr- <br />or glyphosate -based herbicide. Glyphosate can be applied to stump a ca m day during <br />the growing season when temperatures are above freezing but n 85 degrees. <br />Triclopyr can be applied even when temperatures are below ing, the best choice <br />for fall and winter application, though application earlier t fall is commended <br />due to potential non -target effects on native vegetation. pROW e.ated, stum pr tit <br />with multiple stems, thus creating a difficult situation contr 1, since even in cutting <br />and herbicide will be required on the multiple resp . Use emicals should be done <br />with extreme care on this site given the proximity to v a high potential for <br />groundwater contamination. Glyphosate binds to soil pa s and is generally not mobile, <br />so may be a better choice than other herbi 'des that are m obile, especially near the <br />water. However, triclopry-based herbici rlon 4 are ally more effective at <br />preventing resprouting. <br />The locations of large populations of nonna sh arporadic, though both buckthorn <br />and honeysuckle are ul3iquit g the fiel dge. Brush mowing (using a Fecon mower <br />with an ASV attachment o ila uipment) a possible in some areas, while hand <br />cutting will be require thers d to slopes to the distribution of the nonnative <br />stems within the mat x ve rush mowing is possible, work will be <br />limited to the winter mont the gr d is frozen. This will limit damage to the <br />native ground I nt com ,ty and minimize soil disturbance. Hand cutting can be <br />done at vari a year, th the fall is recommended, as native plants will <br />nave sen d and buc -n and er invaders who hold their leaves longer will be <br />easier ify. For han utting, brush pile locations will need to be determined in order <br />to burn pil ly. Detail 'll have to be worked out in the field at the time of removal. <br />Brush disposal ieveral different options that will be determined as the project <br />progresses, and wi pend on the volume as well as site access. Cut brush may be stacked <br />and burned, chippe and blown back on the site, or even removed for biofuels. The biofuels <br />option requires a large amount of material (18 semi -trailer loads of chipped brush, for <br />example), which could be possible given the amount of non-native and native woody brush, <br />but will need further evaluation. Non-native trees like black locust and Siberian elm, and <br />less desirable native trees could be removed to increase the amount of material. The access <br />lane around the field as well as the network of mowed paths throughout the units provides <br />easy access for large equipment and vehicles. In some areas, chipping the material on site <br />could provide mulch that would suppress buckthorn regeneration from the seedbank and <br />Friends of the Mississippi W.H. Houlton Conservation Area NRMP <br />64 <br />