PIa was sown May 9/70 in peat which later will be lifted and
stored at -5 C in fall (Sept./70). Initially planted in a temporary plastic house in Haapastensyrja.

PIa sown May/70 in plastic house at Haapastensyrja

The image shows grafts used for tree breeding in Haapastensyrja

Pinus sylvestris in Nisula Roll located at Haapastensyrja

Niels Kreiberg standing next to 5 yr Populus tremula × Populus tremuloides in Haapastensyrja

Rooted cuttings of PIa in heated peat at Haapastensyrja

Hahn harvester, Liverpool, Bowaters Mersey

Hail damage in young poplar. N.B.loss of leaves. Michener Township. Ministry of Natural Resources

Hand cleaning in 10 yr planted red pine. Formerly Scots pine. Huronia, Simcoe Co.

Hand ignition with drip torch. Kapuskasing