Job offersmore »
- Business Operations Manager - Guyra, Australia
- Export Commercial Assistant - Barcelona, Spain
- Farm Construction Manager - Phoenix (AZ) USA
- Lemon/Citrus Packing-house Manager - Phoenix (AZ) USA
- Account-Manager - Wickede/Ruhr, Germany
- Grower for pot plant production - Tönisvorst - Germany
- Assistant Grower & Growers - Ohio, USA
- Fruit & vegetables Export-Import manager - Avignon or Perpignan, France
- Area Manager North Europe - Netherlands
- Area Sales Manager Oost Europa - Netherlands
Last commentsmore »
- Influencing plant growth with LED light (1)
- Kenya: Mount Elgon Orchards expands with 2ha (1)
- Email Marketing for Professional Greenhouse Growers (1)
- India: Government gives 50% subsidy on a poly house (1225)
- "Plum Power forever" (19)
- Will sea freight be an alternative to Latin American air freight? (240)
- "During the placement of outdoor screens we've had all types of weather conditions" (1)
- Kenya: Rimi Flora to triple in size (2)
- India: HollandDoor launches new three-year horticultural programme (1)
- Video: Floral Fantasia garden creation time-lapse (1)
Top 5 - yesterday
Top 5 - last week
- Pakistan: Opportunities for floriculture and greenhouse techniques
- Italian floriculture finds international platform
- Ecuador eager to break Guinness record with huge rose pyramid
- Kenya: Crowdfunded solar panels provide 50% of rose grower’s energy
- North America: Beekenkamp and Syngenta combine poinsettia portfolio
Top 5 - last month
Exchange ratesmore »
US (MA): Molds on the surface of growing mediaOccasionally molds appear on the surface of growing media in containers. These are saprophytic fungi which live on dead plant material such as bark, peat, coir or compost. They are more likely to occur when the growing media remains wet for prolonged periods of time, especially during stretches of frequent overcast weather like we are experiencing the current time. They also occur due to overwatering or poor drainage. Excessive moisture creates conditions favorable for the mold fungi to grow on the surface of the media. These mold fungi will not hurt the plants or roots. They are not harmful to plants or people, but they can be unsightly. Although they are not harmful to the plants, in severe cases these molds can form a layer on the surface of the growing media and limit water penetration.
To control these molds, reduce irrigation and increase airflow to lower the relative humidity in the greenhouse. Growers that are concerned about appearance can scrape off the fungi. Loosening the compressed media will also help to inhibit the fungal development by drying it out.
These mold fungi should not be confused with algae (green slime), which are a more significant problem. Algae creates an ideal environment for fungus gnats and shore flies. It is a food source for fungus gnats and shore flies. Fungus gnats not only feed on algae and other fungal growth in the growing medium, but also on plant roots, and can transfer plant pathogens through their mouthparts. Algae can form an impermeable layer on the media surface making it difficult for water to penetrate into the growing media.
Source: UMass Amherst (Geoffrey Njue)
Publication date: 4/12/2018
Other news in this sector:
Leave a comment: (max. 500 characters)
- All comments which are not related to the article contents will be removed.
- All comments with non-related commercial content, will be removed.
- All comments with offensive language, will be removed.