1 00:00:01,380 --> 00:00:03,600 - [Mark] This is Mark Isselhardt, Maple Specialist 2 00:00:03,600 --> 00:00:05,680 with the University of Vermont Extension, 3 00:00:05,680 --> 00:00:07,730 and this is another Vermont Maple Minute. 4 00:00:08,910 --> 00:00:11,210 A recent survey by UVM Extension 5 00:00:11,210 --> 00:00:15,300 of licensed foresters working with Vermont landowners asked 6 00:00:15,300 --> 00:00:17,403 about approaches to sugarbush management. 7 00:00:18,290 --> 00:00:20,100 There are two broad categories 8 00:00:20,100 --> 00:00:23,080 that most forestry prescriptions fall into, 9 00:00:23,080 --> 00:00:25,453 even and uneven age management. 10 00:00:26,470 --> 00:00:28,970 Even age management results in 10% 11 00:00:28,970 --> 00:00:33,740 or less of the standing trees being retained post-harvest. 12 00:00:33,740 --> 00:00:36,930 Uneven age prescriptions result in 70% 13 00:00:36,930 --> 00:00:39,723 or more of the standing trees being retained. 14 00:00:40,850 --> 00:00:45,090 Over time, a forested stand under even age management, 15 00:00:45,090 --> 00:00:49,590 all trees will fall into one or possibly two age classes. 16 00:00:49,590 --> 00:00:53,790 Whereas, in uneven age management stands will have trees 17 00:00:53,790 --> 00:00:56,443 of many age classes and sizes. 18 00:00:57,750 --> 00:01:00,550 90% of foresters describe their prescriptions 19 00:01:00,550 --> 00:01:02,730 in sugarbushes as fitting the definition 20 00:01:02,730 --> 00:01:05,110 of uneven age management 21 00:01:05,110 --> 00:01:08,883 and being either single tree selection or crop tree release. 22 00:01:10,070 --> 00:01:12,690 When asked how the interval between harvests 23 00:01:12,690 --> 00:01:15,360 in sugarbushes compared to stands managed 24 00:01:15,360 --> 00:01:17,360 for other forest products, 25 00:01:17,360 --> 00:01:20,640 50% of foresters said it was longer. 26 00:01:20,640 --> 00:01:23,330 A little over 40% said no difference, 27 00:01:23,330 --> 00:01:26,523 whereas just 5% said the interval was shorter. 28 00:01:27,540 --> 00:01:29,730 This is Mark Isselhardt, Maple Specialist 29 00:01:29,730 --> 00:01:31,890 with the University of Vermont Extension. 30 00:01:31,890 --> 00:01:34,040 This has been another Vermont Maple Minute.