Early Response of Ponderosa Pine to Spacing and Brush: Observations on a 12-year-old Plantation
William W. Oliver
ଜାନୁଆରୀ 1979 · Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture
ଇବୁକ୍
7
ପୃଷ୍ଠାଗୁଡ଼ିକ
ଏହି ଇବୁକ୍ ବିଷୟରେ
Competition between trees in brush-free plots began during the eighth year for trees spaced 6 by 6 feet and during the tenth year for trees spaced 9 by 9 feet.