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Assessment of aluminium tolerance in maize using a rapid screening procedure
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Paula Mendes --- , M. P.W. Farina --- , P. Channon --- ,Routine testing for Al tolerance requires that screening procedures be both rapid and simple. Growth-chamber techniques, developed in the USA, show considerable promise in this regard and were used in this study to compare the Al tolerance of 10 maize... -
Screening for DIMBOA (benzoxazinone) concentration among South African inbred maize lines and sorghum cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C. Malan --- , J.H. Visser --- Department of Botany, H.A. van de Venter --- Department of Botany,Twenty-seven popular South African inbred maize lines, four commercial maize cultivars, two sweet corn cultivars and two grain sorghum cultivars were screened by means of a rapid, semi-quantitative method to determine DIMBOA concentration. Significant differences were found between inbred lines... -
Performance of five soybean cultivars in relation to lime and phosphorus levels on an acid Ultisol
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.D. Noble --- Department of Crop Science, Republic of South Africa J.D. Lea --- Department of Crop Science, Republic of South Africa M.V. Fey --- Department of Soil Science and Agrometeorology, Republic of South AfricaThe seed-yield response of five soybean cultivars (Hill, Geduld, Forrest, Welkom and Oribi) to applications of lime [Ca(OH)2] and P was evaluated over two seasons in the field on an acid soil of the Normandien series (Plinthic Paleudult). As a... -
Release of cotton breeding lines (Gossypium hirsutum L.) adapted to South African conditions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.G. van Heerden --- , Republic of South Africa W.H. van Staden --- , Republic of South Africa L. J.B. Rossouw --- , Republic of South Africa C.G. Theron --- , Republic of South AfricaThe cotton breeding programme of the Tobacco and Cotton Research Institute has made available a number of advanced breeding lines and cultivars of cotton for a second cycle of intercrossing and selection. Selati, Gariep and NIK3 have been released for... -
Genotypic variation in leaf water potential of field-grown soybeans (Glycme max L. Merr.) and its association with dryland yield
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R.F. Grant --- , Republic of South Africa J.D. Lea --- Department of Crop Science, Republic of South AfricaMaintenance of leaf water potential (ΨL) during periods of water stress may constitute an important drought-avoiding response. The identification of genotypic variation for this characteristic is, however, made difficult by the fact that comparative values for ΨL must be measured... -
Macadamia cultivar evaluation in Natal
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. Allan --- Department of Horticultural Science, Republic of South AfricaVegetatively propagated macadamia cultivars were grown in six ecologically different areas in Natal. Nut quality was tested over a number of years. The warm, moist north coast area is best for most cultivars tested with Keaau, Ka'u, Kakea and Beaumont... -
A multivariate approach to a specific problem of grouping maize cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: MarieF. Smith --- , Republic of South AfricaThe use of multivariate techniques in the analysis of multivariate problems is illustrated by comparing the results of univariate and multivariate techniques applied to the problem of establishing the nutritional requirements of, and the acid tolerance differences between maize cultivars... -
Damage caused by Chilo partellus (Swinhoe) (Lepidoptera: Pyralidae) to various cultivars of grain sorghum, Sorghum bicolor (L.) Moench
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. van den Berg --- Summer Grain Centre, Republic of South Africa J. B.J. van Rensburg --- Summer Grain Centre, Republic of South Africa K.L. Pringle --- Department of Entomology and Nematology, Republic of South AfricaGrain sorghum cultivars differed significantly in yield response to natural Chilo partellus infestations over a period two seasons. These differences were ascribed to cultivar characteristics of which differences in length of growing season requirements were the most important. Differences in... -
Registration of cotton (Gossypium hirsutum L.) cultivars Letaba, NIK2 and OR19
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.G. van Heerden --- , Republic of South Africa W.H. van Staden --- , Republic of South Africa G.W. Schoeman --- , Republic of South Africa M.E. Stone --- , Republic of South Africa G. S.P. Vink --- , Republic of South AfricaLetaba, NIK2 and OR19 were released for commercial cultivation in the R.S.A. in 1989. Letaba has potential as a dryland cultivar in the Springbok Flats and northern Natal. NIK2 is intended for cultivation under irrigation in the same areas and... -
Differensiële fitotoksisiteit van tralkoksidim, bromoksinil en 'n mengsei van die twee produkte op Suid-Afrikaanse koringcultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.H. Knobel --- , Republiek van Suid-Afrika B.L. de Villiers --- , Republiek van Suid-Afrika H.A. Smit --- , Republiek van Suid-Afrika R.C. Lindeque --- , Republiek van Suid-AfrikaTwee glashuisproewe en een veldproef is uitgevoer om die gevoeligheid van koringcultivars vir die wilde-haweronkruiddoder tralkoksidim, die breëblaaronkruiddoder bromoksinil en 'n mengsel van die twee te bepaal. Waar tralkoksidim teen dubbel die hoogste aanbevole dosisse met die benatter Addit(R) in... -
Identification of tall fescue grass cultivars by sodium dodecyl sulphate and acid polyacrylamide gel electrophoresis
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R.E. Hierse --- , Republic of South Africa O.T. de Villiers --- Department of Botany, Republic of South Africa M. Bosman --- Department of Botany, Republic of South AfricaProtein banding patterns of seed obtained by sodium dodecyl sulphate Polyacrylamide gel electrophoresis (SDS-PAGE) or acid Polyacrylamide gel electrophoresis (A-PAGE) were used to distinguish between different tall fescue (Festuca arundinacea Shreb.) grass cultivars. An electrophoretic formula was determined for each... -
A comparison between the linear regression and AMMI approaches to study multi-site trials using a sample of South African maize trials
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: E. Falkenhagen --- , Republic of South Africa S.M. Funnah --- , Republic of South Africa W. du Toit --- , Republic of South AfricaGrain yield for 21 maize cultivars common to 10 localities and three harvesting seasons was used to compare the Finlay-Wilkinson and the additive main effects and multiplicative interaction (AMMI) methods of studying interactions in multi-site trials. Both methods showed variability... -
Effects of plant population density and cultivar on growth, yield and yield components in groundnut (Arachis hypogaea 1.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. J.P. Tarimo --- Department of Crop Science and Production, Tanzania F.P. Blarney --- Department of Agriculture, AustraliaAn experiment was conducted at the University of Queensland Redland bay Farm (27°37′ S, 153°17′ E) in southeast Queensland, Australia to study response of groundnut cultivars [Improved Virginia Bunch, NC-7, Q18801 (Virginia types), TMV-2, McCubbin and Red Spanish (Spanish types)]... -
The effect of plant population on the quality of sunflower seed for processing
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.A. Nel --- , Republic of South Africa H.L. Loubser --- , Republic of South Africa P.S. Hammes --- Department of Plant Production and Soil Science, Republic of South AfricaAmong other disadvantages, low hullability of sunflower seed results in oil cake with a high fibre and low protein content. Hullability is known to increase with increased seed size. Seed size generally decreases with an increase in plant density. The... -
RAPD analysis of selected common bean (Phaseolus vulgaris L.) cultivars from three African countries
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C. M.S. Mienie --- , Republic of South Africa L. Herselman --- , Republic of South Africa R.E. Terhlanche --- , Republic of South AfricaDNA from six dry bean cultivars was analysed with a total of thirty two primers in RAPD analysis to develop a method to distinguish between the different cultivars. The varieties are cultivated in three African countries and belong to two... -
Differential susceptibility of commercial zucchini cultivars to viruses of cucurbits
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: K.R. Cradock --- , Republic of South Africa J.V. da Graça --- , Republic of South Africa M.D. Laing --- , Republic of South AfricaA study to assess the effectiveness of some zucchini [Cucurbita pepo (L.)] cultivars in limiting the effects of virus disease in zucchini crops was conducted at Bayne's Drift, KwaZulu-Natal. The severity of disease was assessed using a visual rating scale... -
Evaluation of petiole nitrate measurement as an aid for N fertilization of potatoes (Solanum tuberosum L.) on sandy soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.P. Brink --- Department of Agronomy and Pastures, N. J.J. Combrink --- Department of Agronomy and Pastures, F.H. Knight --- Department of Agriculture, Western Cape,Potatoes are produced in the Sandveld of the Western Cape on soils with extremely low clay and organic material contents. A low nitrogen mineralisation potential and high leaching hazard complicate the management of the nitrogen supply to the plant. This... -
Comparisons of using fitted (calculated) and determined (measured) genetic coefficient G2 in CERES-Maize
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.S. du Toit --- , South AfricaGenetic coefficients reflect simulated differences in cultivar growth and development. These are not readily available for most South African maize cultivars. They could either be fitted or determined experimentally. This study showed that the determined values of genetic coefficients are... -
The South African Germplasm Collection of Groundnut, Arachis hypogaea L., and its utility
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.J. Cilliers --- , Republic of South Africa C.J. Swanevelder --- , Republic of South AfricaGroundnut is an important crop for both the commercial and developing farmer in South Africa, providing a source of plant protein and oil. Commercial production varies from 80 000 to 200 000 tons per annum. The only research institute in... -
Sorghum malting quality as affected by availability of suitable cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M. van Loggerenberg --- , A.J. Pretorius --- ,Malting quality of grain samples of commercially available malting class sorghum cultivars was determined over five seasons and three localities for each season. The number of cultivars included in the National Sorghum Cultivar Trials has declined in recent years. The... -
Genetic relationships amongst macadamia varieties grown in South Africa as assessed by RAF markers
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.P. Peace --- , Australia P. Allan --- Discipline of Horticultural Science, South Africa V. Vithanage --- , Australia C.N. Turnbull --- Department of Agricultural Sciences, U.K B.J. Carroll --- , AustraliaMacadamia is an important horticultural crop of South Africa, and the major cultivars grown have a wide range of attributes. These cultivars originated from diverse backgrounds, but the genetic relationships between them are unclear. Here we describe new insights into... -
Determining milling performance of sorghum cultivars by means of abrasive decortication and roller milling techniques
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M. van der Merwe --- , Republic of South Africa G. Osthoff --- Department of Microbial, Biochemical and Food Technology, Republic of South Africa A.J. Pretorius --- , Republic of South AfricaAlthough roller milling has been successfully applied to produce sorghum meal, the South African sorghum milling industry mostly uses abrasive decortication milling. The first objective of this study was to develop a laboratory-scale roller milling technique for a scaled-down roller... -
Using canonical variate analysis to group small white bean cultivars canned in tomato sauce according to their canning quality
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M. van der Merwe --- , Republic of South Africa G. Osthoff --- Department of Microbial, Biochemical and Food Technology, South Africa A.J. Pretorius --- , Republic of South AfricaA laboratory-scale canning and evaluation method was employed to evaluate the canning quality of small white beans over cultivars, localities and seasons. Four small white bean cultivars, representing 15 localities from the 2001/02 season and six cultivars representing 17 localities... -
A canning quality model for small white bean lines selected for breeding (Phaseolus vulgaris L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M. van der Merwe --- , South Africa G. Osthoff --- Department of Microbial, 9300 South Africa A.J. Pretorius --- , South AfricaThe study aimed to validate canonical variate analysis (CVA) model equations for the grouping of small white beans according to canning quality by testing them on four cultivar samples of known canning quality (2000/01 season), and 24 breeding samples that... -
Productivity evaluation of Medicago sativa cultivars under irrigation in a semi-arid climate
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Johann F Theron --- Free State Department of Agriculture, South Africa Hennie A Snyman --- Department of Animal, Wildlife and Grassland Sciences, South AfricaMany Medicago sativa cultivars are available in South Africa, each with unique characteristics. This study evaluated 26 cultivars under irrigation on two ecotopes in terms of number of cuttings, dry matter (DM) production, seasonal DM production curve, DM production curve... -
Sensitivity of selected dry bean (Phaseolus vulgaris L.) cultivars to mesotrione in a simulated carry-over trial
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: James Allemann --- Department of Soil, Crop and Climate Sciences, South Africa Johnny M Molomo --- Department of Soil, Crop and Climate Sciences, South AfricaMesotrione is used to control annual broadleaf weeds and grasses in maize, with waiting periods up to 24 months recommended prior to planting sensitive crops. The objectives of this study were to determine if selected dry bean cultivars exhibited differences... -
Growth and yield responses of commercial sugarcane cultivars to mulching in the coastal rainfed region of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Nkosinathi Nxumalo --- South African Sugarcane Research Institute, South Africa Sanesh Ramburan --- South African Sugarcane Research Institute, South Africa J Martin Steyn --- Department of Plant Production and Soil Science, South AfricaThe perceived negative cultivar responses to mulching has limited the adoption of this practice in the South African sugarcane industry. This study was aimed at evaluating cane yield and quality responses and population dynamics of popular cultivars to mulching in... -
Preliminary retting research on different kenaf cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Mathilda M van der Westhuizen --- Agricultural Research Council–Institute for Industrial Crops, South AfricaKenaf (Hibiscus cannabinus L.), a fibre crop, is a member of the Malvaceae family and related to cotton (Gossipium hirsutum L.) and okra (Abelmoschus esculentus (L.) Moench). Natural fibres have many advantages over synthetic fibres, such as light weight, low...