. A progress report of the results secured in treating pure white pine stands on experimental plots at Keene, New Hampshire . ing out the differ-ences in growth and development resulting from different methods ofthinning as compared to unthinned stands. Four plots were established in1905 in the pure white pine type on a level, sandy area of uniform sitequality and with fairly uniform density of stocking and silviculturalcondition. The location of the plots with reference to each other is shownon the accompanying diagram. The relative condition of the four plots at the time of establishment may
. A progress report of the results secured in treating pure white pine stands on experimental plots at Keene, New Hampshire . ing out the differ-ences in growth and development resulting from different methods ofthinning as compared to unthinned stands. Four plots were established in1905 in the pure white pine type on a level, sandy area of uniform sitequality and with fairly uniform density of stocking and silviculturalcondition. The location of the plots with reference to each other is shownon the accompanying diagram. The relative condition of the four plots at the time of establishment maybe judged from the data in Table 2. The small range between the plotsin basal area and cubic contents is particularly significant as indicatingtheir similarity. Table 3 indicates the treatment given the sample plots after their estab-lishment in 1905. It will be noted that plots 601 and 602 have been thinnedin the same manner each time; the former with a moderately heavy (Cgrade) thinning and the latter with a light (B grade) thinning. A directcomparison is thus afforded between light and moderately heavy thin-nings. 10.
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Keywords: ., bo, bookcentury1900, bookdecade1920, booksubjectpine, bookyear1922
