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Kompetisie tussen koring (Triticum aestivum L.) en Bromus diandrus I. Invloed op vegetatiewe groei
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.M. Ferreira --- Departement Landbou-ontwikkeling, Republiek van Suid-Afrlka G.A. Agenbag --- Departement Akkerbou en Weiding, Republiek van Suid-AfrikaDie doel van hierdie studie was om die kompetisievermoë van koring (Triticum aestivum L.) en Bromus diandrus Roth, te vergelyk in terme van vegetatiewe groei in veldproewe. Die proewe is ontwerp as 'n verpla- singsmodel met sewe populaslesamestellings (behandelings) en... -
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... -
Reaksie van twee lentekoringkultivars op stikstof- en swaelbemesting in die Swartland. I. Vegetatiewe groei, opname en konsentrasie van stikstof en swael in die vegetatiewe plant
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.P. du Plessis --- , Republiek van Suid-Afrika G.A. Agenbag --- Departement Akkerbou en Weidlng, Republiek van Suid-AfrikaDie belangrikheid van die korrekte N: S verhouding het die vraag laat ontstaan of 'n wanbelans tussen N en S nie gedeeltelik 'n bydrae tot die swak benuttingsdoeltreffendheid van N by hoë N-bemestings in die Swartland kan lewer nie. 'n... -
Sucrose synthesis and translocation in Zea mays L. during early growth, when subjected to N and K deficiency
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.C. Pretorius --- Department of Agronomy and Horticulture, Republic of South Africa D.T. Nieuwoudt --- Department of Agronomy and Horticulture, Republic of South Africa Diana Eksteen --- Department of Agronomy and Horticulture, Republic of South AfricaBy omitting N and K either separately or in combination from the rooting medium, a nutrient stress condition was created with the aim of ascertaining whether sucrose synthesis or its translocation was linked to nutrient availability (N, K) in young... -
Effects of early winter gibberellic acid and mineral oil applications on flowering of young non-bearing clementine (Citrus reticulata Blanco.) and satsuma (Citrus unshiu Marc.) trees
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.J. Mudzunga --- Department of Horticultural Science, South Africa K.I. Theron --- Department of Horticultural Science, South Africa E. Rabe --- Department of Horticultural Science, South AfricaGibberellic acid (GA3) and heavy mineral oil (Bac-oil) treatments, either individually or in combination, applied during the flower initiation period in early winter (April to July) were evaluated as a means to reduce flowering levels in young non-bearing citrus trees... -
Rooting responses of guayule (Parthenium argentatum Gray) cuttings to hormone solutions
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 E.Y. Reinten --- , South Africa G.A. Agenbag --- Department of Agronomy, South AfricaVegetative propagation of selected guayule (Parthenium argentatum Gray), with elite qualities of vigorous growth and high latex yield, was Investigated. Rooting responses of guayule cuttings to treatment solutions of indole butyric acid (IBA), naphthalene acetamide (NA) and naphthalene acetic acid... -
Seasonal variations of agar extracted from different life stages of Gracilaria cliftonii (Gracilariales, Rhodophyta) from Western Australia
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J Muñoz --- Centre for Environment and Sustainable Aquaculture, Faculty of Science and Engineering, Australia R Fotedar --- Centre for Environment and Sustainable Aquaculture, Faculty of Science and Engineering, AustraliaSeasonality in yield, physical and chemical properties of the native agar from different life stages of Gracilaria cliftonii was investigated over a period of six seasons (autumn 2008–winter 2009). Agar yield and its properties varied as a function of seasons... -
Screening of topical sterilants for shoot apex culture of Acacia mearnsii
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: IM Thompson MD Laing SL Beck-Pay A FosseyThe surface sterilisation procedure is of integral importance to any micropropagation technique. This process should do the least amount of plant damage, whilst reducing microbial contamination to an acceptable level. The objective of this research was to investigate alternative sterilisation... -
Clonal propagation of Pterocarpus santalinoides L'Hér. ex DC.: the effect of substrate, cutting type, genotype and auxin
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Catherine Ky-Dembele --- World Agroforestry Centre – West Africa and Central Regional Office - Sahel Node – BP, Mali Jules Bayala --- World Agroforestry Centre – West Africa and Central Regional Office - Sahel Node – BP, Mali Antoine Kalinganire --- World Agroforestry Centre – West Africa and Central Regional Office - Sahel Node – BP, Mali Fatoumata Tata Traoré --- World Agroforestry Centre – West Africa and Central Regional Office - Sahel Node – BP, Mali Bréhima Koné --- World Agroforestry Centre – West Africa and Central Regional Office - Sahel Node – BP, Mali Alain Olivier --- Université Laval, CanadaPterocarpus santalinoides is a multipurpose tree species, native to Africa and South America. However, excessive pruning for fodder is jeopardising its seed production leading to poor regeneration in the Sahel region. Efficient vegetative propagation techniques may overcome this concern. To... -
Genetic variation in survival, growth, and stem form of Pinus leiophylla in Brazil and South Africa and provenance resistance to pitch canker
Item type: Journal Article • Journal: Southern Hemisphere Forestry Journal • Authors: WS Dvorak GR Hodge JE KietzkaPinus leiophylla is a relatively common pine that occurs in the mountains of western and central Mexico. Between 1987 and 1990, Camcore, North Carolina State University, sampled 11 populations and 309 mother trees of the species to determine patterns of... -
Maize responses to reduced tillage, different plant residue mulch and nitrogen fertiliser on granitic sandy soils of Zimbabwe
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Walter Mupangwa --- International Maize and Wheat Improvement Centre (CIMMYT), Southern Africa Regional Office, Zimbabwe Isaiah Nyagumbo --- International Maize and Wheat Improvement Centre (CIMMYT), Southern Africa Regional Office, Zimbabwe Eleanor Mutsamba --- International Maize and Wheat Improvement Centre (CIMMYT), Southern Africa Regional Office, Zimbabwe Blessing Mhlanga --- International Maize and Wheat Improvement Centre (CIMMYT), Southern Africa Regional Office, Zimbabwe Jefias Mataruse --- International Maize and Wheat Improvement Centre (CIMMYT), Southern Africa Regional Office, ZimbabweMulching in smallholder conservation agriculture (CA) systems is constrained by lack of adequate crop residues. A three-year study assessed the effects of reduced tillage systems combined with different plant residue mulch and nitrogen (N) fertiliser on nitrogen uptake using the... -
Propagation of Hypoxis hemerocallidea by inducing corm buds
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Motiki M Mofokeng --- Agricultural Research Council–Roodeplaat, Vegetable and Ornamental Plants, South Africa Riana Kleynhans --- Department of Horticulture, South Africa Lesego M Sediane --- Agricultural Research Council–Roodeplaat, Vegetable and Ornamental Plants, South Africa Liesl Morey --- Agricultural Research Council–Biometry, Corporate Office, South Africa Hintsa T Araya --- Agricultural Research Council–Roodeplaat, Vegetable and Ornamental Plants, South AfricaAfrican potato is facing rapid decline of wild populations due to large-scale harvesting, necessitating efficient means of propagation. Propagation of African potato is difficult due to seed dormancy and the species does not naturally propagate easily from corms. This study... -
Phenotypical, physiological and biochemical traits of the vegetative growth of wild tepary bean (Phaseolus acutifolius) under restricted water conditions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Reynaldo Leal-Delgado --- Botánica, Colegio de Postgraduados, México Cecilia B Peña-Valdivia --- Botánica, Colegio de Postgraduados, México Rodolfo García-Nava --- Botánica, Colegio de Postgraduados, México Antonio García-Esteva --- Botánica, Colegio de Postgraduados, México Eleazar Martínez-Barajas --- Departamento de Bioquímica, Facultad de Química, México Daniel Padilla-Chacón --- CONACyT – Colegio de Postgraduados, MéxicoTepary bean (Phaseolus acutifolius A. Gray) is distributed in arid and semi-arid regions from Arizona to the northern areas of Mexico. The objective of this study was to quantify the effects of water deficit on vegetative growth in four accessions... -
Clonal microplant production of Corymbia maculata: effect of chemical sterilisation, plant growth regulator, gas exchange, activated charcoal and lighting
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Letícia Vaz Molinari --- Federal University of Lavras, Brazil Denys Matheus Santana Costa Souza --- Federal University of Lavras, Brazil Maria Lopes Martins Avelar --- Federal University of Lavras, Brazil Sérgio Bruno Fernandes --- Federal University of Lavras, Brazil Douglas Santos Gonçalves --- Federal University of Lavras, Brazil Dulcinéia de Carvalho --- Federal University of Lavras, Brazil Laura Ribeiro Atala --- Federal University of Lavras, Brazil Gilvano Ebling Brondani --- Federal University of Lavras, BrazilCorymbia maculata stands out for its resistance to biotic and abiotic stress and for its high-density wood, which is ideal for sawmills, sleepers, posts, firewood and charcoal. In vitro culture techniques can be used for large-scale clonal microplant production, given... -
Variation in survival, growth and stem straightness in Eucalyptus urophylla provenances in the Southern Highlands region of Tanzania
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: MJ Sangiwa --- Sokoine University of Agriculture, Tanzania SAO Chamshama --- Sokoine University of Agriculture, Tanzania SMS Maliondo --- Sokoine University of Agriculture, Tanzania JN Mwambusi --- Sokoine University of Agriculture, Tanzania RP Mushumbusi --- Tanzania Forestry Research Institute, Tanzania SM Mputa --- Tanzania Forestry Research Institute, TanzaniaLack of quality planting materials has significantly limited productivity and quality of commercial forestry plantations in Tanzania. A provenance/progeny trial of Eucalyptus urophylla was established to test performance in order to select the best planting materials for future plantation activities... -
The effect of superphosphate on the productivity of mucuna (Mucuna pruriens) on a sandy loam soil in Zimbabwe
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.D. Shoko --- Department of Agronomy, University of Stellenbosch, Private Bag X1, RSA P.J. Pieterse --- Department of Agronomy, University of Stellenbosch, Private Bag X1, RSA G.A. Agenbag --- Department of Agronomy, University of Stellenbosch, Private Bag X1, RSAPositive responses to increased soil phosphorus (P) supply have been noted for several leguminous species including mucuna (Mucuna pruriens). The major objective of this research was to investigate the effect of P level of 40 kg P ha-1 on the... -
Advances in mini-cutting of Libidibia ferrea: an integrated approach with mini-stump management and growth regulator
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Igor de Souza Bitú --- Federal Rural University of Pernambuco, Brazil Erika Rayra Lima Nonato --- Federal Rural University of Pernambuco, Brazil Moema Barbosa de Sousa --- Federal Rural University of Pernambuco, Brazil Paulo César da Silva Santos --- Federal Rural University of Pernambuco, Brazil Carlos Luiz da Silva --- Federal Rural University of Pernambuco, Brazil Eliane Cristina Sampaio de Freitas --- Federal Rural University of Pernambuco, Brazil Ricardo Gallo --- Federal Rural University of Pernambuco, BrazilVegetative propagation plays a crucial role in biodiversity conservation and the promotion of sustainable forestry practices, especially for species with difficulties in seed germination due to dormancy and low germination rates. Therefore, this study aimed to evaluate mini-stump management techniques...