Six poinsettia pests and how to overcome them
WEBAug 18, 2021 · Cultural: 1) remove weeds from within and around the greenhouse, 2) avoid over-fertilizing poinsettia plants with water-soluble nitrogen-based fertilizers, and 3) remove leaf debris from production areas. Scouting: 1) use yellow sticky cards to capture whitefly adults, which will help to detect early infestations, and 2) visually inspect the ...
5 tips for temperature control in your growing environment
WEBJun 22, 2020 · Here are five tips for providing and maintaining proper temperatures: Properly size your HVAC system. For indoor grow rooms, sizing the HVAC system is critical to handle the heating and cooling loads you will get once you start growing plants in those rooms. Controlling air temperature with enough air …
Mode of Action Group 3: DMI fungicides - Greenhouse Management
WEBJune 21, 2010. The mode-of-action group 3 (demethylation inhibitors, also called sterol biosynthesis inhibitors) fungicides were first introduced in the mid 1970s and products continue to be introduced. There are over 30 active ingredients in this group with only a few currently registered for ornamentals.
Choose the right plastic film for your needs
WEBMay 27, 2010 · The life of polyethylene film is limited due to degradation processes induced by sunlight and heat. Copolymer poly is a low-cost material that is good for one season. It is a good choice for seasonal greenhouses, overwintering structures and high tunnels. Avoid construction grade material that has less strength.
Understanding IGRs - Greenhouse Management
WEBAugust 12, 2013. Sweetpotato whiteflies on poinsettia. The tiny pale spots are numerous young nymphs, an ideal target for IGRs. Insect growth regulators, or IGRs, are materials that act on the hormonal systems of immature insects. Insects pass through several stages on their way to adulthood. Each step in the process in controlled by chemicals ...
Griffin Greenhouse Supplies releases its 2020 seed and plant catalog
WEBAugust 15, 2019. Griffin announced the availability of its plant and seed catalog. The 2020 catalog contains the complete seed assortment with both new and top selling varieties from key vegetative partners. In addition, the digital edition includes bonus content to help select and grow key new series and in-demand products.
Controlling caterpillars - Greenhouse Management
WEBJun 22, 2020 · Scouting for caterpillars. Visually inspect ornamental plants when moth or butterfly adults are active. In greenhouses, pay close attention to susceptible plants near doors, vents and other openings, especially near vegetable fields. Caterpillars are voracious feeders and can severely damage plant. Look for signs of feeding damage and ...
Consider your covering - Greenhouse Management
WEBFeb 25, 2016 · It is being touted as being more resilient to winds, hail storms and snow loads, having a 120-pounds-per-square-foot snow load rating and 100-mph wind rating. The structural framework of the greenhouse will contribute to the overall resistance to the forces of nature. The bubble wrap type covering has an R-value of 1.71.
Controlled-release fertilizers 101 - Greenhouse Management
WEBMar 22, 2021 · Water-soluble fertilizer (WSF) is ubiquitous in greenhouse crop production, and for good reasons. Yet controlled-release fertilizer (CRF) can be a great option, either as an alternative to WSF or as a complement in production. This month’s Production Pointers will cover some of the important considerations for anyone considering CRFs for ...
Pythium and Rhizoctonia: A root rot primer - Greenhouse …
WEBApr 7, 2011 · Rhizoctonia fungi typically cause a dull brown to dark brown rot on cuttings or lower plant stems. Pythium on geranium Sanitation is especially important in limiting Pythium root rot. Use a pressure washer with soap and water when cleaning walkways, benches, etc. Then treat cleaned surfaces with a disinfestant to …