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  • Home
  • Commercial Info
    • General Culture >
      • Greenhouse Structures
      • Environment
      • Light and Daylength
      • Temperature
      • Nutrition
      • Water, Media and pH
      • Propagation
      • Weed Control
      • Plant Growth Regulators
      • Pest Control
      • Disease Control
    • Greenhouse Ornamental Crop Production >
      • Seed Bedding
      • Vegetatively Propagated Bedding
      • Potted Plants
      • Foliage Plants
      • Perennials
      • Carnivorous Plants
    • Outdoor Ornamental Crop Production >
      • Bedding Plants
      • Perennials
      • Trees and Shrubs
    • Indoor Food Production >
      • Leafy Greens
      • Tomatoes
      • Peppers and Eggplant
      • Cucumbers
      • Herbs
      • Fruit
      • Mushrooms
      • Cannibus
      • Aquaponics
    • Postharvest Handling
    • New Ornamental and Food Crops
    • Deep Winter Greenhouses and High Tunnels
  • Home Gardening
    • Vegetable Gardening
    • Northern Fruit Gardening
    • Vegetable Pests and Diseases
    • Flowers
    • Perennials
    • Landscape Trees and Shrubs
    • Mushrooms
  • Research
    • Research Partners >
      • Altman Plants Resources >
        • Altman Bonsall
        • Altman C & S
        • Altman's Colorado
        • Altmans Plug Connection
        • Altmans Salinas
        • Altman Smart Planet
        • Altmans Texas
        • Altman Lake Mathews
        • Altman Tissue Culture
        • Altman Florida
      • GrowFilm Information
      • Rocket Farms
      • Green Circle Growers
      • Go Green Agriculture
      • Chef's Garden
    • Past and Current Publications
    • Flowering Physiology
    • High Temperature Effects on Growth and Flowering
    • Photosynthesis
    • Cacti
    • Succulents
    • Growth Regulators/Retardants
    • Deep Winter Greenhouses/High Tunnels
  • Teaching
    • The Backyard Farmer: The science of food production and preservation
    • Horticulture herbaceous plant identification (HORT 4113)
    • Growing the Guilty Pleasure (HORT 3480)
  • Pollinator Safe Pest Control
  • Academics
  • Recent Presentations and Upcoming Meetings
  • Ageratum

General Cultural Information

Seed Germination:
pH affects seed germination of eight bedding plant species (Shoemaker and Carlson, 1990)
​
Floriculture Production:
Floriculture production guide (British Columbia Ministry of Agriculture, 2009)

PGRs:
Growth retardant rates for bedding plant production in northern climates (Erwin, 2003).
​
Fertilizer:
How to avoid ammonium toxicity (Erwin, 1990).
Fertilizer conductivity chart (1991).
​Greenhouse nutrition and phosphorus (Reese, 1991).
Ounces of fertilizer required per gallon of concentrate for proportioner injector feeding (1991).
Injector ratios, and amounts of fertilizer needed to deliver different ppm N (1992).
Sustainable production of marigold and calibrachoa with organic fertilizers (Eaton et al., 2013)
​
Humidity:
Greenhouse humidity control (CropKing, Inc., 2017).

Nutritions:
Are your nutrients competing? (Erwin, 1992).
Calcium (Kosla and Ferguson, 1992).
​
Micronutrients:
Managing micronutrients in the greenhouse (Nelson, 1992).

Graphical Tracking:
Graphical Tracking 101 (Heins and Fisher, 1997)
​Hitting the right curve (Fisher, Heins and Lieth. 1997).
Get the plant height you want with graphical tracking (Carlson and Heins.  1990).
Tracking oriental and hybrid lilies (Fisher, Heins, Liu, and Bilodeau. 1998).

pH Management:
Modeling lime reaction in peat-based substrates (Fisher, Huang and Argo, 2006)
Understanding plant nutrition:  Limestone, calcium and magnesium (Huang, Argo and Fisher, 2008)

Fertilization:
Fertilizer injection simplified (1983)

Flowering:
Review of factors which affect blind shoot development in flowering crops (Erwin, 1990).
Determination of photoperiodic response group and effect of supplemental irradiance of flowering of several bedding plant species (Erwin and Warner, 2001).
​How does daylength affect flowering of spring annuals? (Erwin, Warner and Mattson, 2002).
​Fundamentals of flowering in plants:  Supplemental lighting and earliness of flowering (Erwin, Mattson and Warner, 2004).
Fundamentals of flowering in plants:  Juvenility in seed-propagated annuals and how supplemental lighting can affect it. (Erwin, Mattson and Warner, 2003).
Daylength effects on bedding plants I (Erwin, Warner and Mattson, 2004)

Irrigation:
Hand watering, booms, sprinklers or drop?  (Elliot and Mattson, 2012)

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