<strong>The</strong> Response 0 fSitka Spruce to Sulphate <strong>of</strong> Ammonia 27Fowells, H. A. and R. W. Krauss. 1959. <strong>The</strong> inorganic nutrition <strong>of</strong>loblolly pine and Virginia pine with special reference to nitrogenand phosphorus. For. Sci. 5 : 95-112.Gardiner, M. J. and P. Ryan, 1969. A new generalized soil map <strong>of</strong>Ireland and its land use interpretation. <strong>Irish</strong> J. Agric. Res. 8 :95-109.Heikurainen, L. 1967. <strong>The</strong> effect <strong>of</strong> manuring on organic soils. Proc.Fifth Colloquium on Forest Fertilization, Int. Potash Inst.,Jyvaskyla, Finland. 197-205.Holmen, D. H. 1967. Forest fertilization in Sweden. Proc. FifthColloquium on Forest Fertilization. Int. Potash Inst., Jyvaskyla,Finland,291-297.Jack, W. H. 1965. Experiments on tree growing on peat in NorthernIreland. Forestry. 28 : 20-40.Jackson, M. L. 1958. Soil chemical analysis. Constable, London.Kaila, A. 1958. Effect <strong>of</strong> superphosphate on the mobilization <strong>of</strong>nitrogen in a peat soil. J. Sci. Agric. Soc. Finland. 30 : 114-124.Kurkayev, V. T. 1959. Rapid determination <strong>of</strong> N, P and K in plantmaterial from a single sample. Sov. Soil Sci. 1118-1121.Ley ton, L. 1958a. <strong>The</strong> mineral requirements <strong>of</strong> forest plants.Handbuch Pjlanzenphysiologie. 4 : 1026-1039.Ley ton, L. 1958b. <strong>The</strong> relationship between growth and the mineralnutrition <strong>of</strong> conifers. In <strong>The</strong> Physiology <strong>of</strong> Forest Trees (K. V.Thimann, Ed.) 323-345. Ronald Press, New York.MacDonald, J. A. B. 1945. <strong>The</strong> Lon Mor : twenty years researchinto wasteland peat afforestation in Scotland. Forestry. 19 : 67-73.McConaghy, S., J. S. V. McAllister, K. F. Parkin and R. E. Parker.1960. <strong>The</strong> growth <strong>of</strong> Sitka spruce on deep peat in Northern Ireland.]. <strong>The</strong> effect <strong>of</strong> fertilizers and other treatments on the growth <strong>of</strong>young trees. Res. and Expt. Rec., Min. for Agric., NorthernIreland. 10 : 151-162.Meshechok, B. 1968. (Initial fertilization when afforesting openswamps). Norwegian For. Res. Inst. Rep. 87, 24, 1. (N.e.).O'Carroll, N. 1967. Forest fertilization in the Republic <strong>of</strong> Ireland.Proc. Fifth Colloquium on Forest Fertilization. Int. Potash Inst.,JyvaskyUi, Finland. 271-274.O'Carroll, N. 1972. Studies on fertilization, soil cultivation, andplanting techniques and their effects on growth and yields <strong>of</strong>forest crops. Ph.D. <strong>The</strong>sis, University College, Dublin. Unpublished.O'Hare, P. J. 1959. An ecological study <strong>of</strong> certain blanket bogs inCo. Mayo. M .Agr. Sc. <strong>The</strong>sis, University College, Dublin.Unpublished.
28 <strong>Irish</strong> ForestryO'Hare, P. J. 1967a. Leader growth and foliar composition in Sitkaspruce in relation to fertilizer application on blanket peat. Proc.Fifth Colloquium on Forest Fertilization. Int. Potash Inst.,Jyviiskylii, Finland, 111-121.O'Hare, P. J. 1967b. Personal communication, An Foras Taluntais,Oak Park, Carlow.Paarlathi, K. 1967. On the influence <strong>of</strong> the time <strong>of</strong> fertilization onthe growth reactions in a pine stand on a peat soil. 14th I.U.F.R.O.Congress, Munich. 4 : Sect. 23, 483-493.Parker, R. E. 1957. Some problems arising in the afforestation <strong>of</strong>peatlands in Northern Ireland. <strong>Irish</strong> For. 14 : 118-121.Parkin, K. F. 1957. Afforestation <strong>of</strong> peatlands in Northern Ireland.<strong>Irish</strong> For. 14 : 111-117.Tamm, C. O. 1954. Some observations on the nutrient turnover in abog community dominated by Eriophorum vagina tum, Oikos 5 :189-194.Tamm, C. O. 1964. Determination <strong>of</strong> the nutrient requirements <strong>of</strong>forest stands. Int. Rev. For. Res. 1 : 115-170.Walsh, T. and T. A. Barry. 1958. <strong>The</strong> chemical composition <strong>of</strong> SOrr:I~<strong>Irish</strong> peats. Proc. Roy. <strong>Irish</strong> Acad. 59(B) : 305-328.Zehetmayr, J. W. L. 1954. Experiments in tree planting on peat.For. Com. Bull. No. 22.Z6ttI, H. W. 1963. (Nitrogen mineralization on raised bog afterfertilizing with basic slag). Phosphorsaure. 23 : 225-230 (G.g.).Abstract seen.
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