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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. -
Influence of climatic and edaphic factors on the distribution of eragrostis lehmanniana nees in Arizona, USA
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: J R Cox --- US Department of Agriculture, USA G B Ruyle --- Renewable Natural Resources, USALehmann lovegrass (Eragrostis lehmanniana Nees) was introduced into Arizona, USA, from South Africa in 1932 and has since been sown throughout the southwestern USA and Northern Mexico. The species is well adapted in southeastern Arizona where it has been sown... -
The effect of fire on germination in five common veld grasses
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: P.J.K. Zacharias --- Department of Grassland Science, N.M. Tainton --- Department of Grassland Science, C. Oberholster --- Department of Grassland Science,The effect of fire on the germination of Themeda triandra, Heteropogon contortus, Panicum maximum, Aristida junciformis and Spowbolus africanus was investigated. Seeds exposed directly to the fire were destroyed in all species. The germination of seeds buried (7 to 9... -
Evidence of a germination inhibitor in senescent soybean pod walls
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Chapman --- , Republic of South AfricaWater based pod extracts of the pod wall material of four soybean cultivars were found to reduce the germination rate of mustard (Sinapis alba L.) seeds. Highly significant differences were also observed in this respect between the different pod extracts. -
A complex dormancy mechanism in seeds of the weed Rubus cuneifolius
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. van Staden --- Department of Botany, PetaL. Campbell --- ,Both the endocarp and embryo contribute to the dormancy of Rubus cuneifolius seed. Whereas scarification was found to break the dormancy imposed by the endocarp, embryo dormancy could only be overcome by a combination of treatments. These treatments consisted of... -
Die invloed van swartpunt by gars (Hordeum distichon) op ontkieming en α-amilase-aktiwiteit
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. C.J. Maree --- Departement Akkerbou en Weiding, A. L.P. Caims --- Departement Akkerbou en Weiding,Gesonde garssaad en swartpuntgarssaad vanaf verskillende lokaliteite is vergelyk. Die ontkiemingsenergie van gesonde saad was na een maand beduidend beter as die van swartpuntsaad. Na 'n opbergingperiode van twee tot drie maande het geen verskille in ontkiemingsenergie en -kapasiteit meer... -
An effective technique for breaking the seed dormancy of Acacia longifolia
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.J. Pieterse --- P.P.R.I, Weeds Research Unit, Republic of South Africa A. L.P. Cairns --- Department of Agronomy, Republic of South AfricaThe effect of different pre-treatments on the dormancy of the hard-coated seeds of Acacia longifolia Andr. Willd. was determined. A final germination figure of 100% could be obtained with hot water treatments, acid scarification and manual scarification. However, if germination... -
Germination rate of maize (Zea mays L.) kernels. I. Relationships with kernel properties and water uptake
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.A. van de Venter --- , Republic of South Africa Rentia Hoffman --- , Republic of South AfricaRelationships were sought between germination rate and various kernel variables of 12 freshly harvested, undeteriorated seed lots of maize. Germination rate was positively correlated with water content of kernels at all sampling times up to 30 h of incubation and... -
Germination rate of maize (Zea mays L.) kernels. II. Relationships with respiration rate and adenosine triphosphate content
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.A. van de Venter --- , Republic of South Africa Rentia Hoffman --- , Republic of South Africa S. de Meillon --- , Republic of South AfricaGermination rate of freshly harvested, undeteriorated seed lots of maize was found to be positively correlated with rate of oxygen uptake of kernels and adenosine triphosphate (ATP) content of embryos, at 6 and 12 h of incubation. Respiration rate was... -
The optimal germination substratum for tomato (Lycopersicon lycopersicum (L.) Karst, ex Farw.) seed testing
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: W.A. Loubser --- Department of Agriculture, Republic of South Africa H.A. van de Venter --- , Republic of South AfricaDifferent germination options are prescribed by the International Seed Testing Association (ISTA) for the germination test on tomato seed. The purpose of this investigation was to compare three ISTA-approved germination substrata to establish a standardized procedure for uniform germination tests... -
A comparison of seed vigour tests for maize (Zea mays L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.A. van de Venter --- , Republic of South Africa H.W. Lock --- , Republic of South AfricaA number of seed vigour tests were conducted on two groups of maize seed lots. One group consisted of six seed lots of different cultivars while the other group consisted of six sub-lots of one cultivar, artificially aged for different... -
Invloed van omgewingsfaktore en opbergingstydperk op kieming van benfurakarb-behandelde mieliesaad (Zea mays L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.P. Terblanche --- , Republiek van Suid-Afrika H.A. van de Venter --- , Republiek van Suid-AfrikaDie invloed van benfurakarb saadbehandeling op kieming by mieliesaad is onder gunstige en suboptimale temperatuur sowel as na opberging en in waterstrestoestande ondersoek. Konsentrasies van 1 350 en 1 800 g a.b. 100 kg−1 saadmassa en opberging na behandeling lei... -
The effects of various seed treatments on the germination, coleoptile length and emergence of South African winter wheats (Triticum aestivum L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.L. Purchase --- Small Grain Centre, Republic of South Africa J. le Roux --- Small Grain Centre, Republic of South Africa H.A. van Tonder --- Small Grain Centre, Republic of South AfricaThe effect of four seed treatments and storage period of treated seed on the germination, coleoptile length and emergence of five winter wheat genotypes was investigated. The first trial was conducted under controlled conditions to determine the effect of triadimenol,... -
Rapid viability tests for kernels of grain sorghum (Sorghum bicolor (L.) Moench.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.A. van de Venter --- , Republic of South Africa G. Barla-Szabo --- , Republic of South AfricaVarious procedures were evaluated for their potential as rapid viability tests for kernels of grain sorghum (Sorghum bicolor (L.) Moench.). The tests included were a specific gravity test, a conductivity test (with drastically reduced soaking periods), the determination of glutamic... -
Imbibition and germination of seeds of three Acacia species from Ethiopia
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: F. Sánchez-Bayo --- Department of Wool and Animal Science, Australia G.W. King --- Department of Wool and Animal Science, AustraliaImbibition and germination of seeds of three Acacia species from Ethiopia, namely Acacia nubica, A. seyal and A. horrida, were tested in laboratory conditions. Heat treatments had a positive effect on imbibition rates for all three species. The best treatment... -
Allelopathic interaction between Chenopodium album L. and certain crop species
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.F. Reinhardt --- Department of Plant Production, Republic of South Africa Ruth Meissner --- Department of Plant Production, Republic of South Africa N. Labuschagne --- Department of Microbiology and Plant Pathology, Republic of South AfricaLaboratory and glasshouse studies were conducted to assess the allelopathic effect of Chenopodium album L. on the germination and early growth of certain crop species. Test species were grown in soils containing 1% (m/m) freeze-dried shoot material of the weed... -
Die fitotoksiese eienskappe van koring-strooi en die invloed daarvan op opkoms, vegetatiewe groei en opbrengs van koring (Triticum aestivum)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: N.C. Raath --- , Republiek van Suid-Afrika P. C.J. Maree --- Departement Akkerbou en Weiding, Republiek van Suld-AfrikaDie vrystelling van allelopatiese stowwe as ontbindingspro- dukte van koringstrooi kan swak plantegroei en opbrengs van koring veroorsaak. 'n Glashuisstudie is oor drie jaar uitgevoer om die opkoms, vegetatiewe groei en opbrengs van koring (kultivar SST66 en Palmiet) te ondersoek... -
Germination of South African soya bean seed lots
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: B. Hamman --- Department of Botany, Republic of South Africa G. Koning --- Department of Botany, Republic of South Africa H.A. van de Venter --- Department of Botany, Republic of South AfricaA survey of the germination performance of some South African soya bean [Glycine max (L.) Merrill.] cultivars, produced at different localities, was conducted. Seeds were harvested from two early-maturing (Columbus and Crawford), two intermediate-maturing (Prima and Highveld Top), and two... -
Effects of aqueous extracts from Artemisia afra parts and soil on seed germination and early seedling development in selected plant species
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.A. Hansen-Quartey --- Department of Agronomy, Republic of South Africa K. Nyamapfene --- , Republic of South Africa S.A. Materechera --- School of Agriculture, Republic of South AfricaAqueous extracts from leaves, stems, roots of the aromatic shrub Artemisia afra and soil on which Artemisia was grown, were used to investigate their inhibitory effects on germination and seedling development of maize (Zea mays), bean (Phaseolus vulgaris) and ryegrass... -
Germination of Pterocarpus angolensis DC. and evaluation of the possible antimicrobial action of the phloem sap
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: K. van der Riet --- Department of Plant and Soil Sciences, Republic of South Africa L. van Rensburg --- , R.I. De Sousa Correia --- , L.J. Mienie --- Department of Biochemistry and Microbiology, G. H.J. Krüger --- Department of Plant and Soil Sciences, Republic of South AfricaThe Transvaal teak (Pterocarpus angolensis) is being over utilised in its natural habitat, although it is a protected tree in South Africa, Swaziland and Namibia. The phloem sap of this species has several traditional, medicinal uses and the wood is... -
Effect of plant density, weed-crop interference and water stress on seed germination of Datura stramonium L.
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. E.J. Saayman-duToit --- , Republic of South AfricaField experiments were conducted during two growing seasons to determine the effect of different common thorn-apple (Datura stramonium L.) densities on seed germination. The study provided information on the implications of weed and weed seed infestation, where no weed control... -
Improving seed germination of Stylosanthes guianensis by means of warm water treatment
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M. Erasmus --- Department of Agronomy, Republic of South Africa P.J. Pieterse --- Department of Agronomy, Republic of South AfricaThe effect of different warm water treatments on the dormancy of hard-coated Stylosanthes guianensis seeds was investigated. Light and dark coloured seeds were placed into water at different temperatures. Warm water treatments induced a large number of soft-coated seeds. The... -
Breaking dormancy to improve germination in seeds of Acacia erioloba
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: E.K. Materechera --- Faculty of Agriculture, Science & Technology, Republic of South Africa S.A. Materechera --- Faculty of Agriculture, Science & Technology, Republic of South AfricaAlthough Acacia erioloba is an ecologically important indigenous leguminous tree in semi-arid areas of Southern Africa, its propagation remains difficult because of seed dormancy. Different techniques of scarifying the seeds to break dormancy were tested and compared viz.: non-scarified (control),... -
Scarification and stratification of Combretum erythrophyllum (Burchell) seed and fruit for uniformity in germination
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. Wickens --- Applied Natural Sciences, Republic of South Africa W.G. Gaum --- Applied Natural Sciences, Republic of South AfricaDifferent scarification and stratification processes were used to soften River Bushwillow or Combretum etythrophyllun (Burchell) fruit and seed coverings and to determine the percentage, rate and uniformity of germination. Treatments included stratification, hot water scarification, leaching in cold water, soaking... -
Effect of temperature on the germination of grain Amaranth
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T.A. Loonat --- Department of Agriculture, Conservation, Environment and Land Affairs (Gauteng), South Africa E. van den Heever --- , South Africa P. Hammes --- Department of Plant Production and Soil Science, South AfricaAmaranthus cultivation in South Africa has potential commercial importance. To make optimal use of the growing season planting under cool soil conditions is often necessary. The effect of temperature on seed germination of A. hypochondriaeus (unknown landrace) and A. cruentus,... -
Germination strategies of Strandveld Succulent Karoo plant species for revegetation purposes: III Effect of relative humidity and storage site on seed viability
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.J. de Villiers --- Department of Botany, Republic of South Africa M.W. van Rooyen --- Department of Botany, Republic of South Africa G.K. Theron --- Department of Botany, Republic of South AfricaChanges in seed viability owing to fluctuations in environmental conditions (temperature and relative humidity) are crucial factors to consider during post-mining revegetation efforts in the Strandveld Succulent Karoo. The effect of relative humidity and storage site on seed viability was... -
The breaking of seed dormancy of guayule (Parthenium argentatum Gray.) by treatment with gibberellic acid and smoke water solution
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.R. Bekaardt --- , South Africa P.J. Pieterse --- Department of Agronomy, South Africa J.H. Coetzee --- , South Africa G.A. Agenbag --- Department of Agronomy, South AfricaGuayule seed exhibits poor germination due to natural dormancy that can last from six- to twelve months after seed-set. In an attempt to stimulate seed germination, four guayule seed lines (AZ101, AZ-3, N565 and 11591) were treated with smoke water... -
The effect of temperature on the germination of six selected weed species
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: MarthaM. Manoto --- Department of Agriculture: Western Cape, Republic of South Africa MI. Ferreira --- Department of Agriculture: Western Cape, Republic of South Africa GA Agenbag --- Department of Agronomy, Republic of South AfricaField-collected seeds were incubated in a germination cabinet at three temperature regimes and germination percentage was determined after incubation. Species such as Arctotheca calendula, Avena fatua, Bromus diandrus and Raphanus raphanistrum germinated best when subjected to a diurnal temperature regime... -
Temperature and light requirements for the germination of Cleome gynandra seeds
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.O. Ochuodho --- School of Agricultural Sciences and Agribusiness, Pietermaritzburg A.T. Modi --- School of Agricultural Sciences and Agribusiness, PietermaritzburgSeeds of Cleome (Cleome gynandra L.) are characterised by low germination and may require after-ripening. The dormancy characteristics and optimum conditions for seed germination of this species have not been explained. The objective of this study was to investigate the... -
Effects of seed priming and water potential on germination of cotton (Gossypium hirsutum L.) and maize (Zea mays L.) in laboratory assays
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: F.S. Murungu --- Department of Agronomy, Faculty of Natural Resources and Agriculture, Zimbabwe P. Nyamugafata --- Department of Soil Science and Agricultural Engineering, Faculty of Agriculture, Zimbabwe C. Chiduza --- Department of Crop Science, Faculty of Agriculture, Zimbabwe L.J. Clark --- , UK W.R. Whalley --- , UKSub-optimal crop emergence and establishment is a problem in crop production owing to low soil moisture. The effects of seed priming (seed soaking) on cotton and maize germination at different water potentials (0, −10 kPa, −100kPa, −200 kPa, −500 kPa... -
Effect of chemical seed treatment on the germination and seedling vigour of canola (Brassica napus var. oleifera)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R.J. de Villiers --- Department of Agronomy, South Africa G.A. Agenbag --- Department of Agronomy, South Africa S.C. Lamprecht --- , South AfricaIncubation studies were conducted to determine effects of two chemical seed treatments (Cruiser & SA-combination) on the germination and seedling vigour of canola (cv. Varola 44) seed. Germination percentages of the Cruiser and SA-combination treated seeds were not significantly reduced... -
Effects of Artemisia afra leaf extracts on seed germination of selected crop and weed species
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: N. Ammann --- Department of Agronomy, Republic of South Africa P.J. Pieterse --- Department of Agronomy, Republic of South AfricaHerbicide resistance in weeds is a phenomenon threatening sustainable cereal production in the winter rainfall region of South Africa. Every possible weed control measure that may be used to complement chemical weed control measures should be investigated. The effect of... -
Effect of chemical seed treatment on the germination and seedling growth of canola under different soil conditions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R.J. De Villiers --- Department of Agronomy, South Africa S.C. Lamprecht --- , South Africa G.A. Agenbag --- Department of Agronomy, South AfricaStudies in a temperature controlled greenhouse were conducted to determine if phytotoxic effects of chemical seed treatments found in incubation studies also have an effect on the germination- and seedling vigour of canola (cv Varola 44) seed planted in simulated... -
Statistical evaluation of the germination of Cleome gynandra L. seeds
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.O. Ochuodho --- , South Africa A.T. Modi --- , South AfricaRadicle protrusion and subsequent seedling establishment are two ways of defining seed germination. However, international rules for testing seeds adopted the first and final counts through consensus as defining stages of seed germination. In this study statistical guidelines have been... -
Predicting seedling emergence of cabbage and onion using vigour tests
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.K. Fessehazion --- Department of Plant Production and Soil Science, South Africa D. Marais --- Department of Plant Production and Soil Science, South Africa P.J. Robbertse --- Department of Plant Production and Soil Science, South AfricaPredicting seedling emergence using standard and non-standard germination temperatures, standard accelerated ageing (AA) and saturated salt accelerated ageing (SSAA) tests, were investigated. Germinations were performed at temperatures of 10°, 20°, 20°/30° and 30°C for cabbage (Brassica oleracea var. capitata L.)... -
Early establishment performance of local and hybrid maize under two water stress regimes
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T. Mabhaudhi --- , Pietermaritzburg A.T. Modi --- , PietermaritzburgMaize (Zea mays L.) is the major grain crop in South Africa where most subsistence farmers still plant landraces. The objective of this study was to compare two landrace selections of maize with two hybrids popular among small-scale farmers in... -
Response of local mustard germplasm to water stress
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T.P. Mbatha --- , A.T. Modi --- ,A preliminary study was conducted to compare three wild mustard (Brassica species) landraces with respect to germination capacity and seedling emergence under two water regimes. Seeds of three landraces [Isaha, Masihlal-isane (both Brassica juncea (L.) Czern & Coss) and Kway-imba... -
Soil seed bank evaluation and seedling establishment along a degradation gradient in a semi-arid rangeland
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: HA SnymanThe effects of rangeland degradation on the size and species composition of the seed bank and seedling establishment in the field were quantified over a two year period (2000–2001 and 2001–2002 growing seasons). Soil seed bank sampling was carried out... -
Micro‐site influence on seed longevity and seedling emergence of a bunchgrass (Themeda triandra) in a semi‐arid savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: T.G. O'Connor --- Department of Range and Forage Resources, Republic of South AfricaThe influence of micro‐site (shaded, exposed, buried) on the seed longevity and seedling emergence of Themeda triandra was tested using experimental seed banks. Deep shade considerably reduced soil surface temperature. Seeds did not persist in any micro‐site for longer than... -
Short-term response of the encroacher shrub Seriphium plumosum to fire
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: HA Snyman --- Department of Animal, Wildlife and Grassland Sciences, South AfricaQuantification of the short-term impact of burning in terms of the encroacher shrub Seriphium plumosum and grass tuft mortality, seed germination of the shrub (field and seed bank), aboveground phytomass production, plant density and basal cover of the grass sward... -
Phenotypic variation in fruit, seed and seedling traits of nine Uapaca kirkiana provenances found in Malawi
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: W.F. Mwase Å Bjørnstad Y.M. Ntupanyama M.B. Kwapata J.M. BokosiUapaca kirkiana is one of the priority indigenous fruit tree species for domestication in southern Africa. Natural populations of U. kirkiana are declining due to deforestation, forest fragmentation and wildfires. Knowledge of genetic variation is prerequisite for development of conservation... -
Performance of Podocarpus falcatus Provenances in South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: C.J. Geldenhuys --- Division of Water, Environment and Forestry Technology, G.B. von dem Bussche --- ,Podocarpus falcatus, a canopy tree of the mixed evergreen forests in South Africa, is planted in riparian zones in commercial forestry areas. In 1982 provenance trials were initiated to evaluate the performance of 11 provenances in three experimental sites: De... -
The Effect of Long Term Stratification on the Germination of Pinus Pinaster Ait
Item type: Journal Article • Journal: South African Forestry Journal • Authors: D. G.M. Donald --- ,Trials to determine the effect of long term stratification on Pinus pinaster seed subjected to periods of room temperature storage following cold storage and cold storage only indicated that the former could reduce viability of the seedlots. Dormancy of all... -
Seedling recruitment of Colophospermum mopane on the Highveld of Zimbabwe
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: D. Mlambo --- Department of Forest Resources and Wildlife Management, Zimbabwe P. Nyathi --- Department of Forest Resources and Wildlife Management, ZimbabweFactors controlling seedling recruitment of Colophospermum mopane (Kirk ex. Benth) Kirk ex. J. Leonard were investigated on the high veld of Zimbabwe. Seed germination and seedling survival and growth were monitored under canopy and outside canopy microhabitats for a period... -
Seed dynamics and control of Pistia stratiotes in two aquatic systems in Botswana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CN Kurugundla --- Department of Water Affairs, BotswanaThe fruiting and seed dynamics of the alien invasive aquatic species Pistia stratiotes L. (water lettuce; Araceae) was investigated in the seasonally flooded Selinda Canal and Zibadianja Lake of the Kwando–Linyanti River system and in the perennial Chobe River, Botswana,... -
Seed quality characteristics of a bambara groundnut (Vigna subterranea L.) landrace differing in seed coat colour
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Tendai P Chibarabada --- Crop Science, School of Agricultural, Earth and Environmental Sciences, South Africa Albert T Modi --- Crop Science, School of Agricultural, Earth and Environmental Sciences, South Africa Tafadzwanashe Mabhaudhi --- Crop Science, School of Agricultural, Earth and Environmental Sciences, South AfricaBambara groundnut (Vigna subterranea L.) is an underutilised African legume that fits the same ecological niche as Arachis hypogea. It is still cultivated using landraces and little is known about their seed quality. The current study evaluated seed quality characteristics... -
Allelopathic effects of invasive Eucalyptus camaldulensis on germination and early growth of four native species in the Western Cape, South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Sheunesu Ruwanza --- Centre for Invasion Biology, Department of Botany and Zoology, South Africa Mirijam Gaertner --- Centre for Invasion Biology, Department of Botany and Zoology, South Africa Karen J Esler --- Centre for Invasion Biology, Department of Conservation Ecology and Entomology, South Africa David M Richardson --- Centre for Invasion Biology, Department of Botany and Zoology, South AfricaEucalyptus camaldulensis Dehnh. (red river gum; Myrtaceae) is an invasive tree in riparian habitats of the Western Cape, South Africa, where it replaces indigenous vegetation and affects ecosystem functioning. These invasions lead to changes in river geomorphology and reduction in... -
Seed quality of selected bottle gourd landraces compared with popular cucurbits
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Nkanyiso J Sithole --- Crop Science Discipline, School of Agricultural, Earth and Environmental Sciences, South Africa Albert T Modi --- Crop Science Discipline, School of Agricultural, Earth and Environmental Sciences, South Africa Tafadzwanashe Mabhaudhi --- Crop Science Discipline, School of Agricultural, Earth and Environmental Sciences, South AfricaBottle gourd (Lagenaria siceraria (Molina) Standl.) is an indigenous crop that is available only as landraces in sub-Saharan Africa, although it has a great potential for food security. Pumpkin (Cucurbita maxima L.) and cucumber (Cucurbita pepo L.) are exotic crops... -
Effects of rooting media on root growth and morphology of Brassica rapa seedlings
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Michael O Adu --- Department of Ecological Sciences, UK David O Yawson --- Department of Soil Science, School of Agriculture, College of Agriculture and Natural Sciences, Ghana Frederick A Armah --- Department of Environmental Science, School of Biological Science, College of Agriculture and Natural Sciences, Ghana Paul A Asare --- Department of Crop Science, School of Agriculture, College of Agriculture and Natural Resources, Ghana Malcolm J Bennett --- Plant and Crop Sciences Division, School of Biosciences, UK Martin R Broadley --- Plant and Crop Sciences Division, School of Biosciences, UK Philip J White --- Department of Ecological Sciences, UK Lionel X Dupuy --- Department of Ecological Sciences, UKRooting media used in current root phenotyping studies can have substantial effect. In this study, the effects of three different nutrient conducting papers (Black construction paper, Anchor blue germination paper and Kimpak paper) and soil-filled boxes on root growth and... -
Soil seed bank depletion as a mechanism of Lantana camara L. invasion
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sheunesu Ruwanza --- Department of Environmental Science, South AfricaLantana camara is an invasive plant in South Africa with a wide range of impacts. This study assessed the impact of L. camara invasion on the soil seed bank. The study asked the question, does species density and diversity of... -
Role of Brycinus lateralis (Teleostei: Alestidae) in dispersal and germination of Nymphaea nouchali (Angiospermae: Nymphaeaceae) seeds on a seasonal floodplain of the Okavango Delta, Botswana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Mmusi --- Okavango Research Institute, Botswana K Mosepele --- Okavango Research Institute, Botswana M Murray-Hudson --- Okavango Research Institute, Botswana D Teketay --- Department of Crop Science and Production, Botswana M Horn --- Department of Biological Science, USASeed passage through the gut of vertebrates can be important for seed dispersal, but might influence seed viability. The ability of seeds to germinate after ingestion by seed-eating fish is important for the population dynamics of some plant species, and... -
Moringa (Moringa oleifera) leaf extracts inhibit spore germination of Alternaria solani, causal agent of early blight disease of tomato (Solanum lycopersicum)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Culver Mvumi --- Department of Plant Production and Soil Science, South Africa Elizabeth Ngadze --- Department of Crop Science, Zimbabwe Diana Marais --- Department of Plant Production and Soil Science, South Africa Elsa S du Toit --- Department of Plant Production and Soil Science, South Africa Brighton M Mvumi --- Department of Soil Science and Agricultural Engineering, ZimbabweAlternaria solani is highly infective and can sporulate on tomato at 13.2 × 106 spores mL−1. The fungicidal effect of Moringa oleifera leaf chloroform and aqueous extracts (MLCE and MLAE, respectively) was investigated in vitro to determine the inhibitory effect... -
Effect of seed size on field survival and growth of Eucalyptus in KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: Southern Hemisphere Forestry Journal • Authors: RD Naidu NB JonesThis study was established to determine the effect of seed size on nursery performance, field survival and growth. Results indicated that germination was greater for larger seed whereas the smallest seeds germinated poorly. In addition, seedling survival in the nursery... -
Comparison of the effects of mechanical scarification and gibberellic acid treatments on seed germination in Pterocarpus angolensis
Item type: Journal Article • Journal: Southern Hemisphere Forestry Journal • Authors: E Chisha-Kasumu S Woodward A PricePterocarpus angolensis is a savanna tree species growing mostly in the miombo and undifferentiated woodlands found in the southern and central parts of Africa. Exploitation for its medicinal and commercial uses has led to a diminishing of wild populations. Artificial... -
The effect of Cymbopogon citratus aqueous leaf extract on Solanum lycopersicum seed germination and seedling growth under saline conditions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Taofik Sunmonu --- Department of Biological Sciences, Nigeria Aishat Mohammed Naibi --- Department of Biological Sciences, Nigeria Suaib Osineye --- Department of Chemical Sciences, Nigeria Hussein Oloyede --- Department of Biochemistry, NigeriaThe allelopathic potential of Cymbopogon citratus aqueous leaf extract on the germination of Solanum lycopersicum seeds under saline conditions was investigated in a laboratory bioassay. At the end of the eight-day trial, the seeds were evaluated for germination parameters and... -
Seed mix type but not planting method or seed priming affect grassland restoration outcomes: a greenhouse trial
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Stuart Demmer --- School of Life Sciences, South Africa Michelle J Tedder --- School of Life Sciences, South Africa Kevin P Kirkman --- School of Life Sciences, South AfricaCommercial seed mixes and various mechanical planting methods have been implemented to overcome barriers to successful restoration of degraded grasslands but their effectiveness in aiding the restoration process has been understudied. Harvested seed must be cleaned of chaff to allow... -
Effect of treated greywater by black shale and laterite on Lactuca sativa L. germination rate
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Drissa Sangare --- Department of Agronomic, Forestry and Environmental Engineering, Côte d’Ivoire Lassina Sandotin Coulibaly --- Department of Agronomic, Forestry and Environmental Engineering, Côte d’Ivoire Siaka Sylla --- Department of Science and Environmental Management, Côte d’Ivoire Lacina Coulibaly --- Department of Agronomic, Forestry and Environmental Engineering, Côte d’IvoireGreywater reuse for agricultural irrigation may contribute to reduced use of chemical fertilizers, and is helping to conserve scarce freshwater source. However, treatment methods that reduce the harmful effects of untreated greywater are essential for sustainable agriculture. This study aims... -
Contrasting effects of soil pH on seed germination and early seedling growth of Calobota sericea and Lessertia frutescens subs. frutescens
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Francuois L Müller --- ,This study evaluated the impacts of pH on the germination and early seedling growth of Calobota sericea and Lessertia frutescens subsp. frutescens, two perennial legume species found in the semi-arid rangelands of South Africa. The results of this study revealed... -
Seedling establishment and early growth in Calobota sericea subjected to moisture stress
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Francuois Müller --- , South Africa Letty Masemola --- , South Africa Stephen Modiba --- , South Africa Nothando Ngcobo --- , South AfricaThe South African perennial legume Calobota sericea (Thunb.) Boatwr. & B-E van Wyk has been shown to be drought tolerant as mature plants, but information on drought tolerance of seedlings is lacking. This study evaluated the impact of moisture stress... -
Comparison of three methods to assess pre-harvest sprouting in wheat
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: SI Hull --- Stellenbosch University, South Africa PA Swanepoel --- Stellenbosch University, South Africa WC Botes --- Stellenbosch University, South Africa C Mutengwa --- University of Fort Hare, South AfricaPre-harvest sprouting (PHS) in wheat (Triticum aestivum L.) is an increasing concern, as climate variability alters rainfall patterns and air temperatures during harvest, intensifying risk in many cereal-producing regions. The untimely germination of the grain, PHS, is caused by germination... -
Overcoming seed dormancy of Pterocarpus angolensis DC. (umbila) and the evaluation of different substrates in seedling establishment
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Nilso Mangue --- Eduardo Mondlane University, Mozambique Milton Pinho --- Eduardo Mondlane University, Mozambique Énia Amós --- Eduardo Mondlane University, Mozambique Ciro Santana --- Eduardo Mondlane University, Mozambique Sónia Ventura Guilundo --- Eduardo Mondlane University, Mozambique Célia Martins --- Eduardo Mondlane University, Mozambique Orlando Quilambo --- Eduardo Mondlane University, MozambiquePterocarpus angolensis DC. is a premium timber from the Fabaceae family, found in the Miombo woodlands of sub-Saharan Africa. This study aimed at evaluating different scarification methods (chemical, mechanical and thermal) of seeds and the establishment of seedlings. To overcome...