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Response to inoculation of groundnuts grown under irrigation in soil containing indigenous rhizobia
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: B. Kishinevsky --- Division of Legume Inoculation, Agricultural Research Organization, The Volcani Center, Israel B.W. Strijdom --- , Republic of South Africa C.J. Otto --- , Republic of South Africa H.H. Lochner --- , Republic of South Africa M.M. Kriel --- , Republic of South AfricaFive strains of Bradyrhizobium spp. highly effective on groundnuts (Arachis hypogaea L.) were used to inoculate groundnuts grown under irrigation in each of two soils. Both soils contained small numbers of indigenous rhizobia capable of nodulating groundnuts. Root nodules typed... -
Inoculation of cowpea and wheat with strains of Bradyrhizobium sp. that differ in their production of indole acetic acid
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: I.J. Law --- , Republic of South Africa B.W. Strijdom --- , Republic of South AfricaSufficient indole acetic acid (IAA) was produced in yeast extract-mannitol (YM) medium by each of two isolates of indigenous Bradyrhizobium sp., to inhibit primary root growth of cowpea. Similar inoculation of cowpea with YM-cultivated strains from a culture collection or... -
An evaluation of inoculation techniques inducing Stenocarpella maydis ear rot on maize
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.J. Bensch --- Summer Grain Centre, Republic of South AfricaFour Stenocarpella maydis (Berk.) Sutton inoculation techniques were compared over two seasons at Potchefstroom and Bethlehem on six maize cultivars differing in ear rot susceptibility. The techniques showed differentiation between cultivar susceptibility. Application of a conidial suspension behind the ear... -
A settling tower for quantitative deposition of urediniospores of Uromyces viciae-fabae
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T. Negussie --- Debre Zeit Agricultural Research Centre, Ethiopia Z.A. Pretorius --- Department of Plant Sciences, South AfricaAn inoculation technique resulting in uniform spore deposition for obtaining reproducible and accurate data on host responses is required for quantitative studies of resistance expression. The feasibility of obtaining uniform spore deposition on Lens culinaris, a plant with compound leaves,... -
Evaluation of greenhouse inoculation techniques used to screen for Sclerotinia stem rot resistance in soybeans
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C. Botha --- Department of Plant Sciences, N.W. McLaren --- Department of Plant Sciences, W.J. Swart --- Department of Plant Sciences,Numerous inoculation methods have been used to screen soybean germplasm for resistance to Sclerotinia stem rot, caused by Sclerotinia sclerotiorum. This study was conducted to compare six inoculation methods viz. (i) spray mycelium, (ii) drop mycelium, (iii) cut stem, (iv)... -
Glasshouse screening of CIMMYT wheat germplasm for Fusarium head blight response in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Catharina I de Villiers --- Agricultural Research Council–Small Grain Institute, South AfricaFusarium head blight (FHB), mainly caused by Fusarium graminearum, is a serious disease of wheat, barley, oat and maize. Yield losses up to 40% have been reported and grain may contain mycotoxins that are harmful to humans and animals. In... -
The effect of soil carbon on symbiotic nitrogen fixation and symbiotic Rhizobium populations in soil with Trifolium repens as host plant
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: PA Swanepoel --- Technology, Research and Development, Department of Agriculture: Western Cape, South Africa PR Botha --- Technology, Research and Development, Department of Agriculture: Western Cape, South Africa WF Truter --- Department of Plant Production and Soil Science, South Africa AKJ Surridge-Talbot --- Department of Plant Production and Soil Science, South AfricaSoil organic carbon (SOC) is the main attribute of high-quality soil. The amount of nitrogen fixed by Rhizobium symbiotically with Trifolium repens (white clover) is ultimately determined by the quality of the soil environment. The effect of SOC on the... -
Comparison of procedures to evaluate the pathogenicity of Ceratocystisfimbriata sensu lato isolates from Eucalyptus in South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: M van Wyk --- Department of Genetics, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, South Africa RN Heath --- Department of Genetics, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, South Africa M Tarigan --- Department of Microbiology and Plant Pathology, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, South Africa M Vermeulen --- Department of Microbiology and Plant Pathology, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, South Africa MJ Wingfield --- Department of Genetics, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, South AfricaCeratocystis fimbriata sensu lato (s.l.) is an important pathogen of Eucalyptus. Pathogenicity of isolates has typically been evaluated by inoculating seedlings under greenhouse conditions. It is, however, not clear how accurately this reflects pathogenicity under field conditions. In this study,... -
Potential of Phytophthora pinifolia to spread via sawn green lumber: a preliminary investigation
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: R Ahumada --- , Chile A Rotella --- , Chile B Slippers --- Department of Genetics, Forestry and Agricultural Biotechnology Institute, South Africa MJ Wingfield --- Department of Microbiology and Plant Pathology, Forestry and Agricultural Biotechnology Institute, South AfricaPhytophthora pinifolia causes the needle and shoot disease of Pinus radiata in Chile known as Daño Foliar del Pino. Although P. pinifolia is primarily a needle pathogen, there are concerns that it might be spread to new environments via the... -
Tolerance of Pinus patula full-sib families to Fusarium circinatum in a greenhouse study
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: RG Mitchell --- , South Africa MJ Wingfield --- Forestry and Agricultural Biotechnology Institute, South Africa ET Steenkamp --- Forestry and Agricultural Biotechnology Institute, South Africa TA Coutinho --- Forestry and Agricultural Biotechnology Institute, South AfricaThe pitch canker fungus, Fusarium circinatum, has caused large-scale mortality of young Pinus patula Schiede and Deppe ex Schltdl. and Cham. seedlings in nurseries in South Africa since 1990. Diseased seedlings have been inadvertently carried to the field, which in... -
Genetic parameters for Fusarium circinatum tolerance within openpollinated families of Pinus patula tested at screening facilities in South Africa and the USA
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Andre Nel --- Sappi Forest Research, South Africa Gary R Hodge --- Department of Forestry and Natural Resources, USA Kgosi E Mongwaketsi --- Sappi Forest Research, South Africa Arnulf Kanzler --- Sappi Forest Research, South AfricaThe pine pitch canker fungus, Fusarium circinatum, has caused large-scale mortality of Pinus patula Schiede & Deppe ex Schltdl. & Cham. crops in South African nurseries. This disease is now managed with strict hygiene practices and mortality in commercial nurseries... -
Effect on nursery and field performance of Pinus patula seedlings after inoculation with Fusarium circinatum
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Nicoletta B Jones --- Sappi Forests, South Africa Craig M Ford --- Sappi Forests, South Africa Marnie E Light --- Institute for Commercial Forestry Research, South Africa Ryan L Nadel --- Institute for Commercial Forestry Research, South Africa Izette Greyling --- Department of Microbiology and Plant Pathology, Tree Protection Cooperative Programme, Forestry and Agricultural Biotechnology Institute, South Africa Gerda Fourie --- Department of Microbiology and Plant Pathology, Tree Protection Cooperative Programme, Forestry and Agricultural Biotechnology Institute, South Africa Michael J Wingfield --- Department of Microbiology and Plant Pathology, Tree Protection Cooperative Programme, Forestry and Agricultural Biotechnology Institute, South Africa Andrew R Morris --- Sappi Forests, South AfricaFusarium circinatum is an important fungal pathogen of Pinus species. In South Africa, it is the most significant pathogen of Pinus patula seedlings in forestry nurseries where it presents a substantial constraint to productivity and can continue to cause mortality... -
Applied disease screening and selection program for resistance to vascular wilt in Hawaiian Acacia koa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Nicklos S Dudley --- Hawai'i Agriculture Research Center, USA Tyler C Jones --- Hawai'i Agriculture Research Center, USA Robert L James --- Plant Disease Consulting Northwest, USA Richard A Sniezko --- United States Department of Agriculture Forest Service, USA Phil Cannon --- United States Department of Agriculture, USA Dulal Borthakur --- University of Hawai'i at Manoa, USAAcacia koa is a valuable tree species economically, ecologically and culturally in Hawai'i. A vascular wilt disease of A. koa resulting from infection by the fungal pathogen Fusarium oxysporum f. sp. koae (FOXY) causes high rates of mortality in field... -
Response of soybean to Bradyrhizobium japonicum inoculation and phosphorus application under intercropping in the Central Rift Valley of Ethiopia
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Tesfaye Fituma --- Research and Development Center, Ethiopian Sugar Corporation, Ethiopia Tamado Tana --- College of Agricultural and Environmental Sciences, Ethiopia Anteneh Argaw Alemneh --- Natural Resource Management and Environmental Sciences, EthiopiaEffective nodulation by legumes requires balanced availability of phosphorus (P); however, maximum responses to P can be obtained only when adequate mineral nitrogen or superior symbiotic systems are available. Hence, a field experiment was conducted at Metahara Sugar Estate under... -
Nitrogen Deficiency in Semi-Arid Kenya: Can Pigeonpea fix it?
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: K. Kwena --- University of Nairobi, Kenya G. N. Karuku --- University of Nairobi, Kenya F. O. Ayuke --- University of Nairobi, Kenya A. O. Esilaba --- Kenya Agricultural & Livestock Research Organization (KALRO), KenyaFew studies have evaluated improved pigeonpea varieties developed and released in Kenya for soil fertility improvement and contribution to the productivity of cereal-based cropping systems prevalent in marginal areas. A study comprising field and greenhouse experiments was conducted between 2009... -
Short-term impact of arbuscular mycorrhizal fungi and different phosphorus levels on selected soil properties and growth components of two dry bean cultivars in phosphorus-deficient soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Mavis Maserole Moila --- , South Africa Alen Manyevere --- , South Africa Sandile Mthimkhulu --- , South Africa Irvine Mariga --- , South AfricaLow yields of dry beans are often associated with lack of inoculation with biofertilisers and deficiencies in soil phosphorus (P). A field experiment was conducted to investigate the effect of arbuscular mycorrhizal fungi (AMF) and P fertiliser on dry bean... -
The effects of psychological inoculation on cognitive barriers against condom use in women with HIV: A controlled pilot study
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Benjamin Olley --- Clinical & Health Psychology, University of Ibadan, Nigeria Moyosola Abbas --- Brunel University, UK Yori Gidron --- Free University of Brussels (VUB),Past studies have shown that in attempts to prevent HIV, health education yields little change in condom use. The reason may be that education fails to target barriers for changing behaviour. The present controlled pilot study tested whether psychological inoculation... -
Genetic control of Fusarium circinatum tolerance in Pinus patula × P. tecunumanii hybrid families
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Lebogang Mphahlele --- , South Africa André Nel --- , South AfricaThe pine pitch canker fungus, Fusarium circinatum, has caused large-scale mortality of Pinus patula crops in South African nurseries and high in-field post-planting mortality. Tree breeders have identified selection and breeding of tolerant material as the likely long-term solution to... -
Pathogenicity of Pythium myriotylum on Acacia crassicarpa and Acacia mangium × Acacia auriculiformis clones in Indonesia
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Marthin Tarigan --- Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, South Africa Michael J Wingfield --- Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, South Africa Fahimeh Jami --- Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, South Africa Leonardo SS Oliveira --- , Brazil Muhammad A Saha --- Asia Pacific Resources International Limited (APRIL), Indonesia Alvaro Durán --- Asia Pacific Resources International Limited (APRIL), Indonesia Nam Q Pham --- Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, South AfricaThe oomycete Pythium myriotylum is an important pathogen of several crops, causing wilt and damping-off during nursery propagation. The pathogen was recently reported as the causal agent of wilt and damping-off on Acacia crassicarpa plants in nurseries located in Riau,...
