Protected ornamental crops research projects index - Pre 2008

• PC 033a - Alstroemeria: The effects of irrigation on production cycle 1993
• PC 033b - Alstroemeria: evaluation of irrigation/nutrition requirements relative to stage of growth for a range of commercially grown varieties of Alstroemeria 1997
• PC 192 - A review of research work and production practices in Alstroemeria cultivation 2003
• PC 205 - Alstroemeria: towards understanding and optimising productivity, quality and scheduling of Alstroemeria under UK production conditions through monitoring and analysing data from grower holdings 2005

• PC 014 - Module bedding plant trials 1 - Improving seed performance 1988
• PC 014 - Module bedding plant trials 2 - Effects of nutrition and tranplanting dates 1988
• PC 014 - Module bedding plant trials 3 - Effects of pH and P 1988
• PC 014 - Module bedding plant trials 4 - Effects of Nitrate and and EC 1989
• PC 014 - Module bedding plant trials 5 - Effects of pH, P and NO3 1989
• PC 014 - Module bedding plant trials 6 - Germination covering materials year 1 1988
• PC 014 - Module bedding plant trials 6 - Germination covering materials year 2 1989
• PC 014 - Module bedding plant trials 7 - seed quality 1989
• PC 014 - Module bedding plant trials 8 - growth regulation - year 1 1989
• PC 014 - Module bedding plant trials 9 - growth regulation - year 2 1990
• PC 014 - Module bedding plant trials - scientific paper Osmotic priming and fungicide soaks 1991
• PC 014 - Module bedding plant trials - scientific paper environmental conditions and GA 1991
• PC 014 - Module bedding plant trials - scientific paper bulk priming and growth regulators 1991
• PC 041 - Bedding height control with DIF (controlled environment) 1992
• PC 041 - Bedding height control with DIF. Part II bedding plants 1992
• PC 041a - Bedding plants use of DIF 1991
• PC 074 - Bedding plants: effect of temperature on growth, development and flowering 1993
• PC 074a - Bedding plants: effects of the photo-thermal environment on growth, development and flowering 1996PC 074c - Bedding plants: optimising returns in production 1997
• PC 113 - Bedding plants: evaluation of reduced peat or alternative peat-free substrates for use in bedding plant production 1996
• PC 128 - The efficient use of light during bedding plant production (LINK) 2002
• PC 211 - An investigation into pansy mottle syndrome (PMS) - Final report 2005
• PC 242 - Bedding plant biostimulants

• PC 146 - Reiger begonia: supplementary lighting techniques to improve the quality of early season crops 1999

• PC 145 - Cineraria: investigation of factors controlling flowering and development of a predictive model 2000

AYR

• PC 024a - Hydroponic systems for AYR chrysanthemums 1993
• PC 104 - AYR Chrysanthemums: an assessment of the interaction of supplementary lighting and spacing on winter quality 1996
• PC 133 - Chrysanthemums: an investigation of factors influencing root establishment during the winter period 1998
• PC 148 - Chrysanthemums: investigation of reduced night length treatments to improve stem weight and quality under winter and summer environments 1989
• PC 157 - Chrysanthemums: investigation of propagation techniques to improve plant establishment, yield, quality and resistance to root-rot pathogens during winter and spring production 2002

Natural Season

• PC 019 - Natural season chrysanth production trials 1988
• PC 019 - Natural season chrysanth production trials 1989
• PC 019b - Natural season chrysanth production trials 1990
• PC 019c - Natural season chrysanth production trials 1991
• PC 019d - Natural season chrysanth production trials 1992
• PC 019e - Natural season chrysanth post harvest trials 1993
• PC 019f - Natural season chrysanth production trials 1994
• PC 019f - Natural season chrysanth production trials 1996

Pot Mums

• PC 013 - Pot Chrysnathemum - Grading of cuttings (cv Princess Anne) for summer quality 1988
• PC 013 - Pot Chrysnathemum quality - Modules for propagation 1988
• PC 013 - Pot Chrysnathemum quality - Mother plant trial 1988
• PC 013 - Pot Chrysnathemum quality - Shoot length trial 1988
• PC 013 - Pot Chrysnathemum quality - Winter quality 1988
• PC 013 - Pot Chrysnathemum quality - Lighting for winter quality 1989
• PC 013b - Supplementary lighting for pot chrysanthemums 1993
• PC 013c - Chrysanthemums: the influence of supplementary lighting on winter quality and shelf-life of Yoder bred varieties of pot 'mums 1994
• PC 092 - Chrysanthemums: The influence of supplmentary lighting and DROP regimes on winter quality of pot chrysanthemums 1994
• PC 092a - Chrysanthemums: the influence of combined supplementary lighting regimes and pot spacings on the quality and economics of the winter production of pot chrysanthemums 1995
• PC 092b - Chrysanthemums: the influence of night length, long days and pinching on vegetative growth and final quality of pot chrysanthmums during the winter period - Final report 1997
• PC 092b - Pot Chrysanthemums: Comparison of the effects of reduced night-length on winter pot quality when imposed using either assimilation or tungsten lighting - Final report 1999
• PC 092c - Pot chrysanthemums: comparison of the effects of reduced night-length on winter pot quality when imposed using either assimilation or tungsten lighting 2000
• PC 092d - Evaluation of the efficiency of production of winter pot chrysanthemums at 2000 lux and 4000 lux supplementary lighting - Final report 2002

• PC 044a - Hydrangea production of early quality plants 1992
• PC 044a - Hydrangea varieties quality and shelf life 1996

• PC 080 - New Guinea Impatiens season extension and production improvements. Part 1 lighting and shelf life treatments, 1996
• PC 080 - New Guinea Impatiens season extension and production improvements. Part 2 temperature and spacing, 1996
• PC 080a - New Guinea Impatiens season extension and production improvements. Part 1 lighting and temperature, 1996
• PC 080a - New Guinea Impatiens season extension and production improvements. Part 2 nutrition, 1993
• PC 158 - New guinea impatiens: early season production and improvement of shelf-life 2000

• PC 114 - Osteospermum: extending the season of production and examination of environmental effects on quality 1996
• PC 114a - Osteospermum: examination of the use of chilling treatments on a range of cultivars and evaluation of the effect of interrupted periods of warmer temperatures on floral initiation and subsequent flowering 1998

• PC 043 - Poinsettia: potential for the production of miniature, bracted plants for the Christmas market 1992
• PC 071a - Poinsettia variety responses to cultural and chemical treatments 1996
• PC 071b - Poinsettia pinching technique and substrate type 1986
• PC 071c - Poinsettia cooler temperature regimes 1997
• PC 071d - Poinsettia temperature and light 1998
• PC 127 - Poinsettia: translation of the Dutch report "Poinsettia: rijende of vallende ster?" from Aalsmeer on the production and shelf-life of poinsettia 1996
• PC 155 - Poinsettia: strategies for the reduction of plant growth regulator use - Annual report 2000
• PC 155 - Poinsettia: strategies for the reduction of plant growth regulator use - Final report 2001
• PC 208 - Poinsettia: assessment of the value of lighting a late crop to improve throughput 2004
• PC 211a - Ethrel on poinsettia cuttings to increase shoot development and plant quality - Final report 2007
• PC 243 - Poinsettia: Assessment of strategies for efficient utilisation of nursery resources - Annual report 2006
• PC 243 - Poinsettia: Assessment of strategies for efficient utilisation of nursery resources - Final report 2007

Bedding plants – root disease

• PC 027 - Distortion in bedding plants: investigation into causal agents 1990
• PC 027a - Distortion in bedding plants: investigation into causal agents 1993
• PC 038 - Black root rot in pansy and other bedding plants 1992
• PC 038a - Epidemiology of black root rot in bedding plants 1996
• PC 038c - Chemical disinfectants for plastic plug trays contaminated with Thielaviopsis basicola 1995
• PC 143 - Bedding plants: evaluation of fungicides for the control of black root rot and downy mildew Annual report 1998
• PC 143 - Bedding plants: evaluation of fungicides for the control of black root rot and downy mildew Final report 2000

 Bedding plants - rust

• PC 175 - Bedding plants: biology and control of some important rust diseases Annual report 2001
• PC 175 - Bedding plants: biology and control of some important rust diseases Final report 2001

 Pot plants

• PC 50a - Pot plants integrated control of root disease 1993
• PC 50b - Cyclamen costs and benefits for control of fusarium wilt 1993
• PC 191 - Poinsettia: evaluation of phytotoxic effects of fungicides applied to mature plants for the control of powdery mildew diseases 2002
• PC 087 - Control of ringspot on protected hybrid pinks 1996
• PC 096 - Lupin and Lavatera anthracnose 1994

Cut Flowers - downy mildew

• PC 090 - Protected column stocks: evaluation of the efficacy and crop safety fungicide treatments for the control of downy mildew 1993
• PC 179 - Lisianthus (Eustoma): control of downy mildew (Peronspora chlorae) - Annual report 2001
• PC 179 - Lisianthus (Eustoma): control of downy mildew (Peronspora chlorae) - Annual report 2002
• PC 179 - Lisianthus (Eustoma): control of downy mildew (Peronspora chlorae) - Final report 2003

 Cut flowers - verticillium

• PC 253 - Verticillium wilt of chrysanthemums - protecting UK growers by ensuring a safe propagation chain 2007
• PC 195 - To investigate new symptoms of Verticillium wilt of chrysanthemums and determine the extent of pathogen variation 2005

Cut flowers - white rust

• PC 024b - Hydroponic systems for AYR chrysanthemums: aspects of disease control 1995
• PC 057 - Chrysanthemum white rust control review 1992
• PC 057a - Chrysanthemum white rust control 1993
• PC 185 - Chrysanthemum White Rust: Estimation of prevalence of strains of Puccinia horiana on chrysanthemum tolerant to strobilurin and triazole fungicides and the development of a protocol for identifying tolerant strains. (Defra report) 2002
• PC 185 - Chrysanthemum White Rust: Estimation of prevalence of strains of Puccinia horiana on chrysanthemum tolerant to strobilurin and triazole fungicides and the development of a protocol for identifying tolerant strains. (AHDB report) 2002
• PC 231 - Control of white rust in commercial chrysanthemum production Annual report 2007
• PC 231 - Control of white rust in commercial chrysanthemum production Final report 2008

  Cut Flowers - other

• PC 096 - Lupin and Lavatera anthracnose 1994
• PC 087 - Control of ringspot on protected hybrid pinks 1996

 General

• PC 107 - Comparison of chemical disinfectants for treatment of a glasshouse sand bed contaminated with Phytophthora 1995
• PC 097 - Identification of sources of inoculum and the development of rapid diagnostic tests for Pythium infestation of ornamentals 1998
• PC 097a - Ornamentals: Sources of Pythium inoculum, fungicide resistance and efficacy of surface sterilants 2001
• PC 236 - A review of alternatives to chemical pesticides as post-harvest treatments for cut flowers 2006
• PC 252 - Protected ornamentals: detection, prevalence and control of seed-borne diseases - Year 1 report 2007
• PC 252 - Protected ornamentals: detection, prevalence and control of seed-borne diseases - Year 2 report 2008
• PC 252 - Protected ornamentals: detection, prevalence and control of seed-borne diseases - Final report 2009

Red Lily Beetle

• PC 219 - Risk assessment and chemical ecology of the red lily beetle - Final report Grower summary 2005
• PC 219 - Risk assessment and chemical ecology of the red lily beetle - Annual report 2006
• PC 219 - Risk assessment and chemical ecology of the red lily beetle - Final report Grower summary 2007

Sciarid and Shore flies

• PC 147 - Control of sciarid fly during ornamental plant propagation 1998
• PC 147a - Ornamentals: evaluation of the effect of insecticide granules in the plug stage on plant quality and sciaris fly control in finished plants 2001
• PC 277 - Protected Ornamentals: Investigation of fungal pathogens infecting larvae of Sciarid and Shore flies 2007

Thrips

• PC 077 - Chrysanthemums, sweet peppers, cucumbers: control of thrips and aphids by the flower bugs, Orius spp and Anthocoris 1993
• PC 095 - A literature review of tomato spotted wilt virus (TSWV) and its vector western flower thrips (WFT) with reference to the production of protected ornamental plants 1996
• PC 177 - Protected Flower Crops: evaluation of sugar products to improve the control of western flower thrips - 2002

 Vine Weevil

• PC 015 - Vine weevil project 2 - scientific paper fungicides and insecticides impact on Merarhizium 1992
• PC 015 - Vine weevil projects 4 - scientific paper application of metarhizium anisopliae conidia to control vine weevil larvae on glasshouse pot plants 1993
• PC 015 - Vine weevil project 5 - scientific paper the development of vine weevil larvae on a range of ornamental pot plant species and the potential for control using Metarhizium anisopliae 1993
• PC 015 - Vine weevil project 6 - scientific paper selection of virulent and persistent Metarhizium anisopliae isolates to control black vine weevil larvae on glasshouse begonia 1993

Western Flower Thrips 

• PC 018a - Pot Chrysanthemums - WFT biology and control 1987
• PC 018b - Biology and control of WFT on chrysanthemums 1988&89
• PC 018f - Phytotoxicity testing of Dichlorvos fogs on bedding plants 1989
• PC 018c-d - Control of chrysanthmum pests with Verticillium Lecani 1992
• PC 018f - Effects of dichlorvos fog on pot and bedding plants and on the control of WFT 1991
• PC 018g - Pot and Bedding Plants: Crop safety and control of WFT with Dichlorvos fogs 1992
• PC 261 - Protected bedding and pot plants: evaluation of western flower thrips control by Atheta coriaria using an on-nursery rearing system 2006

 Whiteflies

• PC 070 - Poinsettia: integrated pest management of whiteflies 1993
• PC 254 - Phytotoxicity testing of new pesticides as Dip treatments to unrooted ornamental cuttings; in order to remove or reduce the risk of Bemisia tabaci infestation 2007

• PC 059a - Irrigation run off from protected ornamental crops 1998
• PC 166 - Protected ornamentals: the efficiency of water use in different production systems - 2000

• PC 176 - Protected crops: improving the efficiency of suplementary lighting equipment and installations - 2001

AYR Chrysanthemum

• PC 012 - Interrupted-lighting schedules for AYR spray chrysanthemum cultivators (HRI Efford) 1988
• PC 012 - Development of interrupted-lighting schedules for a range of AYR spray chrysanthemum cultivars 1988
• PC 012 - Development of interrupted-lighting schedules for a range of AYR spray chrysanthemum cultivars extended work 1989
• PC 104 - AYR Chrysanthemums: an assessment of the interaction of supplementary lighting and spacing on winter quality 1996

Bedding and Pot Plants

• PC 042 - Pot plants: a comparison of light sources for use as supplementary lighting for winter pot plant production 1992
• PC 013b - Supplementary lighting for pot chrysanthemums 1993
• PC 013c - Chrysanthemums: the influence of supplementary lighting on winter quality and shelf-life of Yoder bred varieties of pot 'mums 1994
• PC 079 - Pot plants: optimisation of light intensity and CO2 utilisation for Christmas production 1992
• PC 092 - Chrysanthemums: The influence of supplementary lighting and DROP regimes on winter quality of pot chrysanthemums 1994
• PC 092a - Chrysanthemums: the influence of combined supplementary lighting regimes and pot spacings on the quality and economics of the winter production of pot chrysanthemums 1995
• PC 092b - Chrysanthemums: the influence of night length, long days and pinching on vegetative growth and final quality of pot chrysanthemums during the winter period - Final report 1998
• PC 092b - Pot Chrysanthemums: Comparison of the effects of reduced night-length on winter pot quality when imposed using either assimilation or tungsten lighting - Final report 1999
• PC 092c - Pot chrysanthemums: comparison of the effects of reduced night-length on winter pot quality when imposed using either assimilation or tungsten lighting 2000
• PC 092d - Evaluation of the efficiency of production of winter pot chrysanthemums at 2000 lux and 4000 lux supplementary lighting - Final report 2002
• PC 112 - Foliage plants: improving winter production and plant quality with the use of supplementary lighting 1996
• PC 128 - The efficient use of light during bedding plant production (LINK) 2002
• PC 208 - Poinsettia: assessment of the value of lighting a late crop to improve throughput 2004

• PC 041 - Bedding height control with DIF (controlled environment) 1992
• PC 041 - Bedding height control with DIF. Part II bedding plants 1992
• PC 041a - Bedding plants use of DIF 1991
• PC 041b - Fuchsia DIF observation trial 1992
• PC 041c - The effects of day and night temperatures on stem elongation (PhD summary report) 1993
• PC 085 - Bedding plants: growth regulation by 'air brushing' 1993
• PC 085a - Bedding plants: growth regulation by mechanical brushing 1996
• PC 086 - Bedding cultural methods for plants growth regulation 1995
• PC 086 - Bedding cultural methods for plants growth regulation 1996
• PC 092 - Chrysanthemums: The influence of supplementary lighting and DROP regimes on winter quality of pot chrysanthemums 1994
• PC 106 - Evaluation of plant growth regulators as a method of controlling leaf size on bedding primrose and polyanthus varieties grown under protection 1995

• PC 196 - Beddings plants: the use of low temperature storage as a scheduling aid in bedding plant production - Annual report 2003
• PC 196 - Beddings plants: the use of low temperature storage as a scheduling aid in bedding plant production - Final report 2004
• PC 196a - Beddings plants: the use of low temperature storage as a scheduling aid in bedding plant production (autumn pansy and primrose) - Final report 2004
• PC 203 - Practical demonstration of scheduling techniques for flowering patio plants 2004
• PC 224 - Improved scheduling of primrose 2008
• PC 235 - Bedding plants: Assessment of the suitability of a range of miniature cyclamen varieties for use as late summer/autumn flowering bedding plants 2006
• PC 238 - Improved scheduling of violas and pansies through the use of night-break lighting - Annual report 2006
• PC 238 - Improved scheduling of violas and pansies through the use of night-break lighting - Final report 2007
• PC 267 - Collaborative research programme in partnership with Saxon State Institute for Agriculture, Pillnitz, Germany for the development of 'new' ornamental plants for early season sales Part II: Scheduled production and quality improvement 2007

• PC 045 - Bedding plants: a review of factors affecting shelf life 1992
• PC 045a - Fuchsia: improving shelf life by chemical and cultural means 1993
• PC 134 - Ornamentals: a review of the role of ethylene on post harvest flower senescence and abscission and methods to ameliorate ethylene effects 1997
• PC 152 - Robust product design and prediction for post-harvest pot plant quality and longevity (LINK) - Annual report 2001
• PC 152 - Robust product design and prediction for post-harvest pot plant quality and longevity (LINK) - Final report 2003
• PC 158 - New guinea impatiens: early season production and improvement of shelf-life 2000
• PC 234 - Bedding Plants: Benchmarking current transport and distribution practices with the aim of identifying factors that determine plant quality during transit and methods to maintain quality Year 1 report 2006
• PC 234 - Bedding Plants: Benchmarking current transport and distribution practices with the aim of identifying factors that determine plant quality during transit and methods to maintain quality Year 2 report 2007
• PC 234 - Bedding Plants: Benchmarking current transport and distribution practices with the aim of identifying factors that determine plant quality during transit and methods to maintain quality Final report 2008

• PC 168 - Cut flowers: evaluation and development of plastic films and low cost growing structures - Annual report 2001
• PC 168 - Cut flowers: evaluation and development of plastic films and low cost growing structures - Final report 2003
• PC 168 - Cut flowers: evaluation and development of plastic films and low cost growing structures - Supplmentary report 2003
• PC 170 - Protected Crops: The potential of spectral filters for pest control - 2001

• PC 006 - The effects of humidity on the growth of tomato, cucumber and poinsettia 1988
• PC 006 - The effect of high humidity on the growth and development of poinsettia 1989
• PC 046 - Pot Plants: summer shading / humidification 1995
• PC 073 - Pot plants: a review of the experimentation on shade screens and humidification and the application of this technology in glasshouse pot plant production 1993
• PC 074 - Bedding plants: effect of temperature on growth, development and flowering 1993
• PC 074a - Bedding plants: effects of the photo-thermal environment on growth, development and flowering 1996
• PC 172 - The use of dynamic climate control systems for the production of high value ornamental crops in the UK - a technical assessment - 2001
• PC 207 - Protected ornamentals: improved guidelines for humidity measurement and control when using advanced climate control strategies Annual report 2004
• PC 207 - Protected ornamentals: improved guidelines for humidity measurement and control when using advanced climate control strategies Annual report 2005

• PC 075 - Bedding plants: Review of factors affecting primula and pansy germination 1993
• PC 081 - Survey of bedding and pot plant growers 1992
• PC 091a - Ornamentals Advice Centre: proposal for a telephone survey 1995
• PC 100a - ISHS pot and bedding conference report 1998
• PC 105 - Factors affecting blindness and quality in primrose 1995
• PC 120 - BOPP code of practice 1996
• PC 221 - Developing novel approaches to the sustainable production of ornamentals in the UK HDC Research Fellowship Annual report 2006
• PC 221 - Developing novel approaches to the sustainable production of ornamentals in the UK HDC Research Fellowship Annual report 2007