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Effects of season of burn on shrub survival, regeneration and structure in the Natal Drakensberg
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: F.R. Smith --- Department of Environment Affairs, Directorate of Forestry, N.M. Tainton --- Department of Grassland Science,Four shrub species which tend to invade unburnt grassland were studied in field‐burning trials at Cathedral Peak in the Natal Drakensberg. -
Can molybdenum reduce pre-harvest sprouting in wheat?
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.T. Modi --- Department of Agronomy, Republic of South Africa A. L.P. Cairns --- Department of Agronomy, Republic of South AfricaThe effect of foliar application of molybdenum (Mo) on grain dormancy was examined in six wheat cultivare at four sites. Application of 100 mg L−1 Mo at flag leaf stage significantly increased grain Mo content at all sites and reduced... -
Determination of the preharvest sprouting resistance of South African winter wheat (Triticum aestivum L.) cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Annelie Barnard --- , Republic of South Africa J.L. Purchase --- , Republic of South Africa MarieF. Smith --- , Republic of South Africa D. van Lill --- Department of Food, Clothing and Hotel Management, Technicon Free State, Republic of South AfricaPreharvest sprouting significantly reduces the quality of the South African wheat crop. This study classified the preharvest sprouting resistance of 17 South African winter wheat cultivars sampled over a range of typical winter wheat growth environments. Sampling was performed under... -
Comparison between methods for estimating sprout damage in wheat
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Barnard --- , South Africa C.S. van Deventer --- Department of Plant Science (Plant Breeding), Faculty of Natural and Agricultural Sciences, South Africa H. Maartens --- Department of Plant Science (Plant Breeding), Faculty of Natural and Agricultural Sciences, South AfricaSprouting in wheat is common when rain occurs during harvest. This causes the moisture content of the grain to increase to a level at which germination takes place and α-amylase increases. Various methods can be used to determine α-amylase in... -
The possible role of the oxidative pentose phosphate pathway in seed dormancy in winter wheat cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Barnard --- , South Africa J.C. Pretorius --- Department of Agronomy, South AfricaSeed dormancy is an important characteristic in small grain cultivars, because of its potential to prevent preharvest sprouting and the subsequent loss of quality. In this study the oxidative pentose pathway (OPP) activity in seeds of a preharvest sprouting susceptible... -
The effect of poor quality seed and various levels of grading factors on the germination, emergence and yield of wheat
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Barnard --- , South Africa F.J. Calitz --- , South AfricaHigh quality seed is essential for establishing productive stands of wheat. Seed should have, amongst others, a high germination percentage, be free of seed borne diseases and should not contain any weed seed. Protein content (PC), hectolitre mass (HLM) and... -
A comparison of planting and coppice regeneration of Eucalyptus grandis × Eucalyptus urophylla clones in South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Jacob W Crous --- Sappi Forests, South Africa Louisa Burger --- Department of Forest and Wood Science, South AfricaResults from two coppice compared to replant trials are presented that originated from clone by site interaction (CSI) trials established on high‑ and low‑productivity sites in subtropical coastal KwaZulu‑Natal, South Africa. After the 84‑month CSI trial measurements were completed the... -
Harvesting and extraction impacts on Eucalyptus grandis × E. urophylla coppicing potential and rotation-end volume in Zululand, South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Kylle Schwegman --- Nelson Mandela Metropolitan University, South Africa Keith M Little --- Nelson Mandela Metropolitan University, South Africa Andrew McEwan --- Nelson Mandela Metropolitan University, South Africa Simon A Ackerman --- Institute for Commercial Forestry Research, South AfricaFrom the early 2000s there has been a general shift in South Africa in harvesting and extraction systems from the use of semi- to fully-mechanised systems. Any increase in mechanisation, as is occurring in Zululand, will need to take into... -
Disturbance impacts on the persistence niche of key species in the Baikiaea–Guibourtia–Pterocarpus woodlands of north-western Zimbabwe
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: A Chichinye --- , Zimbabwe CJ Geldenhuys --- , South Africa PW Chirwa --- , South AfricaThe persistence niche (studied through different modes regeneration) of three key species (Baikiaea plurijuga (Harms), Guibourtia coleosperma (Benth.) J. Leonard and Pterocarpus angolensis) (DC) under five different disturbance regimes (eight years after cessation of disturbance) was studied in the Baikiaea–Guibourtia–Pterocarpus... -
Fire and herbivory shape belowground bud banks in a semi-arid African savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: AB Bombo --- , Brazil F Siebert --- , South Africa A Fidelis --- , BrazilFire and herbivory are major drivers in tropical savanna ecosystems and they selected a flora composed of species able to cope with recurrent aboveground biomass removal. Renewal of the herbaceous stratum is made possible by resprouting, mostly through a belowground...