... B.B., Modelling growth responses of juvenile radiata pine (Pinus radiata D. Don) clones subjected to different weed competition levels in Canterbury, New Zealand, Ph.D. thesis,University of Canterbury ... for relative growth rate decline of juvenile trees 589LWR changes during the same period (year 2 3) increasedwith increasing competition in clones 1 and 2, but decreased in clone 3. Trees in clones ... 221– 230 .[18] Mason E., Kirongo B.B., Watt M.S., Richardson B., Mead D.J., Use of image analysis to estimate foliage masses of radiata pine clones and families subjected to varying levels of competition...