HORTGRO SCIENCE DOCUMENT ARCHIVES

2018 Document Archive

December/ January

Johnson S. Phytosanitary Measures Research Group meeting 2017
Van Zyl SA. Impact of selected orchard spray application technologies and tree phenology on deposition properties on the leaf and fruit surfaces of apple trees
Viljoen H, De Kock VA. Fine-tuning the determination of optimum harvest maturity of cold stored African Delight® plums
Lennox C, Den Breeyen A, Meitz-Hopkins J. Management of postharvest diseases of apples using appropriate methods: A South African Perspective

2017 Document Archive

October/ November

Wessels BA, Linde CC, Fourie PH, Lennox C, Mostert L. New insights into the population dynamics and fungicide resistance of Botrytis cinerea in pear orchards
Lötze E, Van Zyl FJ, Taylor NJ. White root growth dynamics of bearing apple trees in the Elgin area
Wilson I. Fine-tuning fungicide application: A new perspective on the control of post-harvest decay in stone fruit
De Kock A. Technology transfer goes online (Post-Harvest Innovation Programme)
Viljoen H. Smart solution to plum conundrum (Post-Harvest Innovation Programme)
Botes A. In-depth solution to superficial scald (Post-Harvest Innovation Programme)

August/ September

Hortgro Science Technical Symposium — Game of Fruit Article Collection
Theron K. Moisture maketh the nectarine (Post-Harvest Innovation Programme)
Ferreira S. The hunt for Botrytis cinerea (Post-Harvest Innovation Programme)

June/ July

McDonald D. Orchards of the future
Steyn W. Growing Fruit IQ — The net gain
Theron K, Steenkamp H, Lötze G, Reynolds S, Steyn W. A new chemical thinner for plums on the horizon
Addison M. IPM still going strong after 30 years
Bonthuys J. Beyond the farm gate: FruitLook shows the big picture
Human T. Turkish pears in the spotlight
Stassen P, Malan A. Host status and sensitivity of commercial stone fruit rootstocks to ring nematodes
Hurndall R. ISHS VIII International Post-Harvest Symposium in Cartagena, Spain

April/ May

Industry players share concerns in Hortgro Risk Assessment
Hurndall R. Packhouse Action Group makes its mark
Baard N. Area Wide IPM programmes work, analysis shows
Kotze W, Steyn W, Siboza X. Does foliar sucrose application increase fruit set in Packham’s Triumph pears?
McDonald D. Interpoma 2016 highlights: The apple in the world
McDonald D. Thrips Control: Culmination of a 34-year entomology career for Dr Elleunorah Allsopp 
McDonald D. Langkloof seminar tackles climate change

February/ March

USDA Expert: There’s a Plan B to handle apple replant disease
Crop Production Final Report Summaries
Weten om te groein: HORTGRO EU visit 2016
FruitLook: Support for Farmers
Growing Fruit IQ blog: Propagating change
Interpoma 2016: Knowledge & Science – key to fruit producers in the future
Interpear 2016: The pear revolution
Duvenhage E. Apple replant disease under spotlight
Bonthuys J, Soil: The true wealth of farmers

December/ January

Bonthuys J. Be fire wise
Bonthuys J. FruitLook offers bigger picture
McDonald D. SA-India collaboration to take biological pest control to next level
McDonald D. The ‘how and why’of biological control of mites in the Ceres region
Pringle KL, Heunis JM. Mites with special reference to pears
Horstmann C, Van der Merwe L, Steyn L, Badenes M, Tobutt K. Marker-assisted selection of apricot seedlings for Plum Pox Virus resistance at ARC Infruitec-Nietvoorbij
Hugo HJ. Susceptibility of commercial stone fruit rootstocks to ring nematode (Criconemoides xenoplax)

October/November

Midgley SJE, Boonzaaier J, Vermeulen M. The benefits of using certified, virus tested, true-to-type plant material
Bonthuys J. Fruitlook – Satellites aid irrigation on fruit farms
Theron K, Kirstein D, Steyn W. Are handheld bloom thinners a viable option to thin apple trees?
McDonald D. Insect-killing fungi could soon be added to growers’ toolbox
McDonald D. Spanish lessons for South African fruit growers

August/September

HORTGRO Science Technical Symposium coverage (Part I)
HORTGRO Science Technical Symposium coverage (Part II)
Bonthuys J. Fruitlook saves you money
Addison M. International fruit fly symposium feedback
McDonald D. Better fruit fly surveillance needed in Africa
McDonald D. Invasive wasps and farmworkers

June/July

Duvenhage E. Going green: A necessity not an option
Steyn W, Theron K, Voight F, Ungerer F. Nursery Trees: When it is not the nurseryman’s fault
Midgley S. SmartAgri: A climate change response plan for the Western Cape
Bonthuys J. Fruitlook: Season for change – brave new world of fruit farming
Louw E, Steyn W, Cook N, Allderman L, Calitz F, Jacobs G. Chronic sleep disorders in apple trees lead to rude awakenings
Steyn W. Growing fruit IQ: Pome fruit rootstocks for Africa

April/May

Van Der Merwe G. Harvesting systems and labourer platforms as a tool for the fruit farmer
Booi S, Smith C, Labuschagne I, Koopman T. First stone fruit harvest at an Emerging Farm, Stutterheim, Eastern Cape
Veldtman R. Small farms benefit significantly from a few extra pollinators…
Beerwinkel E. Robertson skole kry groot skenking vir boekwurms
Duvenhage E. Prof Linus Opara: In service of industry
Kriel G. Nematodes might play a role in plum tree deaths
Hurndall R. Growing Fruit IQ – CA & Postharvest Group rises again
Bonthuys J. FruitLook technology assists farmers
Steenkamp E. Emerging Growers hit Europe
Kriel G. Dieback of plum trees – it isn’t a new problem
Steyn W. Change, the only constant
Bonthuys J. Plum Shrivelling
Bonthuys J. A river runs through…

February/March

Bonthuys J. Unravelling the Broken Stone Mystery
Bonthuys J. Fruit safety and local water quality: do they mix?
Beerwinkel E. SU Chancellor Award for Theron
Duvenhage E. Boere moet werk maak van NEMBA
Addison M. Growing Fruit IQ column – Crop protection
Die Langkloofinligtingsdag
Booi S, Smith C, Koopman T, Mbangu B, Labuschagne I. Low-chill apple selections show promise in the Eastern Cape
Mostert L, Ferreira J, Van Zyl F, Havenga M. What is the phytosanitary status of nursery trees?
Van Der Merwe G. Harvesting systems and labourer platforms as a tool for the fruit farmer: what the research showed us? [2]

December/January

Vrystaat appel simposium lok rekordgetal
Van Der Merwe G. Harvesting systems and labourer platforms as a tool for the fruit farmer: what the research showed us?
Theron K, Steyn W. What are the physiological characteristics of a good nursery tree?
Soeker M. Streamlining the ARC’s Phase 2 evaluation programme for pome fruit
Duvenhage E. Vrugteman verruil navorsing vir kamera
Dzikiti S. How thirsty is your apple orchard?
HORTGRO Science Researchers – Meet two researchers from Experico
Steyn W. Growing Fruit IQ column – The importance of research
Duvenhage E. Being more specific about apples
Addison M. HORTGRO Science Crop Protection Seminar September 2015

2015 Document Archive

Steenkamp E. Crystal balling storage life: THE DPA DILEMMA
Von Diest S, Machardy W, Lennox C. Shredding leaves in autumn lowers apple scab levels in the next season
Van Zyl F. Fuller’s rose weevil found in stone fruit orchards in the Robertson area
Theron K, De Villiers G, Steyn W. Is mechanical blossom thinning a viable alternative to hand thinning for stone fruit?
Steenkamp E. EPN – Our Biological Superweapon?
Stassen P. Rootstocks for early nectarines in a low chill region as well as plums where high water tables and calcareous soil plus ring nematodes occur
Schwabe W. Effective post-harvest eradication of EBI tolerant Venturia inaequalis with EBI fungicides in South Africa
Malan A. A rose by any other name?
Malan S, Gagiano E. Why is it important to have virus free plant material?
Malan S. The importance of planting certified trees that are free of Apple mosaic virus (ApMV)
Malan S. The importance of planting certified trees that are free of apple chlor (ACLSV)
Machardy W, Von Diest S, Lennox C. Developing an apple scab management programme for South African based on IPM principles
Brink D, Kotze W, Steyn W. Do shade nets ease the burn or do they burn a hole through your pocket?

2014 Document Archive

Steenkamp E. FEMA – A Blushing Success
Wohlfarter M. Codling Moth – Control or Neglect?
Voigt F. Apple rootstocks for commercialisation and further testing
Van Schoor L, Bezuidenhout K. Potential use of compost extract and Bacillus inoculants in combination with compost in managing apple replant
Van Schoor L, Bezuidenhout K. Managing apple replant disease inVyeboom region with biological soil amendments vs fumigation
Van Schoor L, Bezuidenhout K. Effect of organic material and biological amendments on pear tree performance in the Vyeboom region
Van Schoor L, Bezuidenhout K. Optimally managed apple orchards
Van Niekerk S, Malan A. Combining entomopathogenic nematodes (EPNs) with biological control agents
Steenkamp E. Better with Platforms?
Steenkamp E. A “Mitey” Journey
Stassen P. Higher density peach orchards according to the central leader concept
Stassen P. Orchard Platforms
Stassen P, Van Zyl F. Die back of stone fruit trees associated with wet weather conditions in the Western Cape fruit region
Rabe S. Orchards of the Future
Proietti P, Nasini L, Famiani F, Guelfi P, Standardi A. Influence of light availability on fruit and oil characteristics in Olea europa L.
Oosthuyse S, Napier D, Holwerda H. Effect of the potassium source, either as KNO3, K2SO4 or KCl, in nutirent solutions on the growth of sand-potted peach or apple nursery trees
Morkel E. Washinton State apple industry observed
Louw J, Korsten L. Penicillium rot of apples and pears
Lotze E. Taking the mystery out of mulching
Kapp C, Storey S, Malan A.  The right nematode cocktail can make farmers happy by nursing soil to health
Jooste M.  Wees slim wanneer jy pruime stoor
Harris P. Electricity a growing resource concern
Dzikiti et al. How much water do high yielding apple orchards require for sustainable production?
Duvenage E. More buzz needed about SA’s honeybee research
Bezuidenhout K, Van Schoor L. Biological amendments and pome fruit cultivation: a South African overview on ARD research

2013 Document Archive

Volschenk T. Irrigation Strategies for apple production in the Koue Bokkeveld region
Van Zyl C, Malan AP, Addison M. Storing requirments of entomopathogenic nematodes
Van Zyl C, Malan AP. Cost-effective culturing of the yellow mealworm nematodes
Turketti S, Lotze E. Visual identification of damage associated with lenticels in apples after cold storage
Moral J, De Oliveira R, Trapero A. Extract from elucidation of the disease cycle of Olive Anthracnose caused by Colletotrichum acutatum
Meyer A. Survey on mycorrhizal fungi in apple orchards
Manrakhan A, Daneel J. Efficacy of M3 bait stations and GF-120 for control of fruit flies in a citrus orchard in Mpumalanga
Louw E, Theron K. Using near-infra red (NIR) spectroscopy to predict quality in plums
Brodie L. FruitFly Africa is combating Mediterranean fruit fly in the South African deciduous fruit industry
Fourie Postharvest decay stone fruit
Fourie J. Postharvest decay on stone fruit… what, when and how to reduce
Van Zyl C, Malan AP, Addison ME. Selecting the right host diet for in vivo culturing of entomopathogenic nematodes, using nematode yield as one of the deciding variables
De Klerk J, Smith C. Pollination requirements of Japanese Plum (Prunus salicina
Crouch I, Taylor M. The impact of harvest maturity and cold storage duration on superficial scald development on Granny Smith apples
Crouch I, Bergman H. Feedback on the 2012 Forelle early market access programme
Crouch I, Bergman H. Consumer acceptance study of early marketed Forelle pears in the United Kingdom and Germany
Crouch I, Bergman H, van Zyl S, Moelich D. Evaluation of modified atmosphere packaging and other technologies to assist in decreasing the 12 week mandatory cold storage period of Forelle pears
Allan P. Effect of winter chilling and winter shade on kiwifruit
Allan P. Selection and vegetative propagation of superior bisexual papayas
Mollendorf L, Stander C, Bester M, De Kock A, Smith C, Zietsman P. African Delight pruim in perspektief

2012 Document Archive

Wooldridge J,  Joubert M, Booyse M. Comparison between the Honeybush species Cyclopia genistoides and C. subternata
Van Niekerk S, Malan AP. Citrus mealybug highly susceptible to entomopathogenic nematodes, with humidity being the main impediment for successful aerial application
Terblanch JS,  Addison P, Nyamukondiwa C, Manrakhan A. Factors influencing the distribution of Medfly and Natal fly in South Africa: Current Research Status
Stassen P, Campbell H. Rootstock evaluation committee for deciduous fruit
Ross J. Developing a biological control method for terrestrial molluscs in South Africa
Pringle KL, Heunis JM. Bollworm management in apple orchards
Ntombela S. Identification of attractive markets for South African fresh apples (HS 080810) using ITC’s composite indices
North MS, De Kock K, Booyse M. New pear rootstocks: results from High Noon
Newborn R, Louw D. Moving towards a sustainable agricultural future through improving soil fertility – opportunities for the fruit industry
Myburgh P. Growing stone fruit and grapes where water resources are limited Part 1 – Soil Management 
Moelich DH, Taylor M. Packaging formats for stone and pome fruit
Malan AP, Moore SD. Entomopathogenic nematodes show excellent potential to control soil stages of false codling moth and can use the adult moth for aerial transport over long distances
Lotze E. ‘n Loodsondersoek na gemiddelde minimum en maksimum grondtemperature
Kotze WAG. Fertilisation and irrigation of olives
Human T, Von Mollendorff L. ‘Cheeky’ blospeer beindruk in Warm Bokkeveld
Rabe, A. Area-wye vrugtevlieg beheerprogram na volgende vlak
Confronting Climate Change. Retailers information resource – Industry Response Statement
Bergman H, Crouch E, Crouch I, Jooste M, Majoni J. Update on the possible causes and management strategies of flesh browning disorders in ‘Cripps Pink’ apples
Allsopp E, Knipe M. Monitoring fruit pests: Why and how?

2011 Document Archive

Witbooi WR, Fourie JF, Taylor MA. Stem decay on cold stored pears
Voigt F. Selection of budwood of Royal Gala strains at SAPO Trust
Viljoen HW. Effect of gamma irradiation as a mitigation treatment on storage quality of plums
Van Zyl FGH. A remedy fof wooly apple aphid in the Western Cape
Van Zyl F. Stem cankers on stone fruit
Van Rensburg N. Versorging van eenhede vir produksie van gesertifiseerde plantmateriaal
Stassen P, Wooldridge J, Hugo H. Effects of nine rootstocks on peach tree performance on a nematode infested sandy soil
Stassen P, Wooldridge J. Choosing the correct stone fruit rootstock
Stassen P, Wooldridge J. Peach rootstocks for soils with moderately high pH salinity
Stassen P, Wooldridge J. Adequate carbohydrate reserves confer an early season competitive advantage
SIT (Sterile Insect Technique) Vrugtevlieg Winterstrategie
Schoeman MH. The current status of guava wilt disease in South Africa
Crop agriculture, pollination and the honeybee
Saayman R. The managment and implementation of domestic and international market access programme (s)
Oosthuizen M. Flavor King: Some facts and recommendations
Oosthuizen M. Flavor Fall: New plum for South African growers
Kruger FJ, Lemmer D. Commercialisation of Smartfresh(SM) in the South African avocado industry
Fourie J, Joubert M, Freitag K. Effect of organic and integrated soil management practices on the weed population in a ‘Pink Lady’ apple orchard in the Elgin region
Ferreira T. Commercialisation of nematodes – A future biopesticide for South African growers
De Kock A. Flesh firmness utilising a penetrometer with a 6mm plunger as a harvest maturity parameter for apricots
De Kock A, Taylor M. Quantum advances in the cold storage maintenance of plum fruit quality using SMARTFRESH combined with other handling and packaging
Crouch I, Bergman H, Viljoen H. Efficacy of SMARTFRESH applications to palletised cartons of apples
Buchanan R, Trout A, Vos R. Optimum harvest maturity and cold-storage potential of the new SAPO Trust stone fruit varieties Sweet December and Summer Jewel S

2010 Document Archive

Champanis R. New fruit diagnostic tests give accurate prediction of maturity and storage quality of apples and pears
Vos R. SAPO trust evaluates exciting new pome fruit varieties
Storey S. What is soil health? – Soil Health Testing: Which indicators?
Stassen P, Kangueehi G, Wooldridge J. Macro and Micronutrient requirements of fruit trees
Lebese T, Stassen P, Wooldridge J. Effects of drip fertigation and micro sprinkler irrigation on yield, root growth and water use in a South African apple orchard
Dzikiti S, Verreynne JS, Stuckens J, Somers B, Verstraeten WW, Swennen R, Coppin P. Hyperspectral remote sensing: prospects and challenges for monitoring fruit production
Bouwer JJ, von Broembsen LA, Dodd MC. A benchmark study of energy usage in export fruit production, packhouse and cold store operations
Stokwe NF, Malan A. Potential use of entomopathogenic nematodes for biological control of mealybugs on apples and pears
Lanz J. Soil indicators: physical & chemical
De Kock A, Buchanan RJ. Optimum harvest maturity and cold storage potential of Sun Supreme plums
De Waal JY, Malan AP, Levings J, Addison MF. Using entomopathogenic nematodes to disinfest wooden fruit bins of diapausing codling moth larvae
Allsopp E. Identifying thrips of economic importance on deciduous fruit