excessive light

Listing 1 - 10 from 241 for excessive light

African Violets
... also satisfactory. Often, it is possible to tell from their appearance whether light levels are satisfactory. If light is too low, leaves are usually deeper in color and thinner than ... of diffused light. Unless light is extremely low, plants may grow well but will flower poorly or not at all. In such instances, supplemental artificial light is helpful in promoting flowering. Excessive light levels ...
edis.ifas.ufl.edu

PMB - Plant & Microbial Biology Department, UC Berkeley
... edu Niyogi Lab web site Photosynthetic organisms have evolved multiple mechanisms to cope with excessive light. We seek to identify and dissect these processes by isolating algal and plant mutants ... We study the cellular processes involved in coping with reactive oxygen species produced in excessive light. Kathleen Ryan kryan@nature.berkeley.edu We isolate pure populations of Caulobacter swarmer ...
plantbio.berkeley.edu

Moth Orchids(Phalaenopsis) And How to Grow Them
... orchids can tolerate higher temperatures if the humidity also rises. Candystripe Phalaenopsis LIGHT Moth orchids like bright indirect light. They will thrive in eastern, or shaded western or southern exposures ... green leaves means that the phals are not getting enough light. Dark reddish pigmentation on the leaves may indicate excessive light which can result in fewer and smaller flowers. Healthy ...
www.argusorchids.net

Grow Orchid Indoors: Southern and Western Light
... window-blind, may be needed to protect plants from excessive light and heat at these times. Ample air circulation is also important and a light fan directed just above the leaves, will help ... for indoor use. Suggested Orchids to Grow Bright sunny exposures: Cattleyas, Ascocendas, and Dendrobiums Bright light but no direct sun: Phragmipediums, Oncidiums and Brassias In the shadow of sun-loving orchids ...
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The BSPP - Publications - BSPP News39 Summer 2001
... group, which studies the molecular genetics of plants' responses to oxidative stress caused by excessive light levels. Bjørn Drøbak is concerned with signalling at the cellular level, studying the role ... awarded his PhD from Wageningen University, the Netherlands, for his thesis entitled ‘Epidemiology of light leaf spot (Pyrenopeziza brassicae) on winter oilseed rape (Brassica napus)’. He works now ...
www.bspp.org.uk

Ask Extension Database, NDSU Extension Service
... in a 50-50 mix of peat moss and perlite or vermiculite (ver-MIK-ya-light). Make sure the leaf blade sits above the rooting medium. The leaf petiole should be ... should be around 70 degrees. Do not place the cutting in an overly bright location. Excessive light can quickly destroy the leaf blade. A rotting leaf stem base often indicates there is ...
www.ext.nodak.edu

June 2003 Newsletter
... are?  Just pull back the petals of a light colored rose (they love light roses) and you will see the tiny ... giving the plants a cooling bath early in the day.  Excessive spray residue can decrease the photosynthesis process thus preventing food ... are extremely tolerant of imperfect growing conditions including:  bad soil, light shade, and insufficient water. The most common characteristics of the ...
carolinadistrict.org

Cymbidium Society of America: Paphiopedilum Culture
... higher light levels than the soft-leaved Maudia types. Good indications of insufficient lighting are long and weak flower stems and entire plants "stretching" towards the light. Excessive yellowing of leaves and short flower stems may indicate that the plant is getting too much light. <--Previous Next--> Natural Habitat * Growth Habit * General * Temperature Light * Watering * ...
www.cymbidium.org

Conservation Part 25: Orchids on a Windowsill, by Marilyn Light, 14 July 99
... Shading will reduce light reaching the leaves and pots. Covering pots in reflective foil, placing foam insulation between the pots and the window can effectively control excessive heating. Foil ... budding; a better windowsill choice in moderate climates. Humidity important. Dendrobium - High to medium light; warm days - cool nights; a good windowsill choice for temperate climates. Catasetum - High ...
www.geocities.com/~marylois

Conservation Part 22: At the Root of the Matter: fertilizers and potting medias, by Marilyn Light, 14 Apr 99
... formula containing micronutrients. Flush the potting medium at least monthly to counter salts buildup. Excessive mineral salts in the medium will suppress root growth. - With orchids that grow ... regular applications of fertilizer and adequate light to control the burgeoning growth. Too little light and soft, floppy growth will result. Too much light and fertilizer but not sufficient water ...
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