Peter Kamp will present a new steering principle to achieve crop goals based on the overall water balance of the plant. The unique starting point of this steering principle is a feed-forward control for the greenhouse climate and water-supply, based on water uptake, fixation of water and transpiration of the crop. The control follows the plant’s circadian rhythm in terms of growth and crop development and can be specifically tuned to the crop goals of the grower.
Dr. Fadi Al-Daoud, Greenhouse Vegetable Specialist, Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA), e-mail: firstname.lastname@example.org
The next application intake for cost-share funding under the Canadian Agricultural Partnership (CAP) will be November 15 to December 6, 2021. This is good timing if you are looking to implement improvements in your greenhouse for the 2022 season.
Adopting innovative automation to improve labour productivity is an eligible project area. (Image of an automatic cutting transplanter- AutoStix)
Several project areas are available to growers.
The following categories may be of specific interest to greenhouse floriculture growers:
What do consumers value most when purchasing nursery plants?
Vineland Research and Innovation Centre and the Marketing& Consumer Studies department at the University of Guelph have partnered to better understand the factors consumers consider and value when purchasing nursery plants. Results from consumer interviews completed through in-store intercept interviews and an online survey of North American consumers in 2020 and 2021 will be highlighted. Since nursery centres have increased their online presence due to pandemic restrictions, we will provide recommendations on how best to position products for both in-store and online success.
In mid-late autumn, we have an opportunity to manage some of our plant pests, such as mite eggs and scale insect nymphs, before they go completely dormant. Now that trees are starting to drop their leaves and the weather has turned mild for a bit, horticultural professionals have a great window for managing some overwintering plant pests! The full, dormant rate of horticultural oil is excellent for smothering juvenile stages of insects this time of year as long as the application isn’t followed too closely by a significant freeze event. Magnolia scale (photo above: overwintering nymphs in autumn J. Llewellyn) populations were… Continue reading →
I am Mieke Boecker, the 2021 OMAFRA Summer Field Technician. I worked closely with Jen Llewellyn, OMAFRA Nursery and Landscape Specialist on several projects and this article outlines some of the highlights of my summer contract with OMAFRA.
White waxy filaments produced by beech scale mothers protect eggs and hatching nymphs on the trunk of this American beech (J. Llewellyn)
Introduced Beech scale (Cryptococcus fagisugae) goes hand in hand with beech bark disease (Neonectria faginata and N.ditissima). It is believed that the wounds made by the tiny scale nymphs create entry points for the lethal fungal disease. Beech scale is easier to see this time of year on our native American beech (Fagus grandifolia). That’s because of the white waxy coverings the females produced to protect their eggs in late summer. Continue reading →
Do you ever see chlorotic or stunted leaves and wonder if it could be a particular nutrient deficiency? Soil nutrient testing can be a good tool to assess levels of macro and micronutrients. We use soil tests to help make decisions about adding fertilizer and organic materials to the soil. But what soil tests don’t always tell you is……how much of the nutrient is available for plant uptake? To get a more accurate picture of nutrients that could be deficient (or excessive), we look to foliar nutrient content analysis.
Looking up at the sky today, it was so hazy you couldn’t see much but a fuzzy-looking grey. This is a different kind of overcast than what we normally get to experience. Hundreds of wildfires are burning in the west and prevailing winds are carrying the smoke eastward to Ontario and beyond. “The layer of smoke is in the upper atmosphere and it is not affecting air quality”, Peter Kimbell, a warning preparedness meteorologist for Environment Canada based in Ottawa, told CBC Toronto. Get ready for some cooler weather on its way for Wednesday 🙂