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Performance of Medicago sativa under dryland conditions on the eastern Highveld
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: N F G Rethman --- Department of Plant Production, J J Odendaal --- Department of Agriculture & Water Supply, Transvaal Region, C C De Witt --- Department of Agriculture & Water Supply, Transvaal Region,Increased livestock numbers and improved animal performance based on dryland lucerne pastures requiring little or no nitrogenous fertilizer have been demonstrated to be feasible on the eastern Highveld. With large scale planting of lucerne‐based pasture (25% of arable land) 350... -
Initial Spacing of Pinus patula for Maximum Yield of Pulp-wood over a 16-year Rotation
Item type: Journal Article • Journal: South African Forestry Journal • Authors: B. Bredenkamp --- Natal Forestry Research Centre,Analysis of previously published data showed that volume production of Pinus patula on a 16-year rotation reaches a maximum with initial espacements of 2 430 ± 620 stems/ha. Expected volume yields and diameters for a range of espacements are provided. -
The Silvicultural Treatment of Eucalypt Plantations in Southern Africa
Item type: Journal Article • Journal: South African Forestry Journal • Authors: R.J. Poynton --- Department of Water Affairs, Forestry and Environmental Conservation,Approximately 500 000 ha has been afforested in Southern Africa with Eucalyptus spp.—principally E. grandis—for the production of mining timber, pulpwood, rough building and fencing materials and fuel on a short rotation of 6 to 10 years, for telegraph and... -
Early Respacement and Fewer Thinnings can Increase Profitability of Coniferous Sawtimber Production
Item type: Journal Article • Journal: South African Forestry Journal • Authors: B.V. Bredenkamp --- Natal Forestry Research Centre, J. S.J. Venter --- , H. Haigh --- Natal Forestry Research Centre,A pine sawtimber production regime using wider initial spacing, early respacement, fewer thinning operations and a shortened rotation is proposed. The proposal is compared with a commonly accepted regime for ranges of interest rates and pulpwood prices. Benefits are lowered...