This is the second article in a two-part series looking at the effects of light during cutting propagation. While the first article focused on the effects of daily light integral (DLI) during propagation of rooted cuttings, this article will focus on finished plants. We wanted to see how DLI during propagation affected growth and flowering
Whether you are a propagation specialist or are rooting cuttings for your own in-house production, the goals of propagators are the same — to efficiently produce high-quality rooted cuttings. In order to meet the spring and early summer market dates for flowering bedding plants, cuttings are typically rooted in mid- to late-winter and early spring
Bedding and potted plants are traditionally fertilized daily or several times a week with water soluble fertilizer (WSF) applied in the irrigation water. With WSF, the fertilizer components are in a form that can be directly absorbed by the plant. This also means the fertilizer components can immediately impact the soluble salts and the pH
While controlled-release fertilizers (CRFs) are not a recent addition to a grower’s toolbox, they are not nearly as common as traditional water-soluble fertilizers (WSF). Many growers comment that they don’t want to lose the control they have with traditional WSF programs. However, new formulations and technologies in CRF manufacturing, along with a desire for alternative
After seeing how bedding plants are affected by controlled-release fertilizers, three separate studies were conducted to show how the use of these fertilizers influenced the production of potted plants. The Poinsettia Experiments Rooted liners of ‘Premium Red’ poinsettias were potted into 4.5-inch containers filled with a commercial soilless substrate that was amended with CRFs: Osmocote
Bedding production begins in mid- to late-winter and early spring in the northern half of the U.S., when outdoor air temperatures and light are at seasonally low levels. During this time, greenhouses must be heated to maintain desirable production temperatures. The costs involved can be huge. Energy for heating in northern climates accounts for 10
Flurprimidol drenches have been shown to successfully control height of oriental lilies and Dutch bulbs such as hyacinth, narcissus and tulips, but there is no data that shows how effective flurprimidol drenches are on Easter lilies. Researchers decided to find out.
Purdue researchers share their best practices for controlling stem length of common foliage annuals using PGR liner dips.
Figure 2. Long, thin and weak poinsettia stems due to tight spacing (shade avoidance response) on the greenhouse bench. Scroll down to see the rest of the figures for this story. Controlling height is a major challenge for growers with most floriculture crops. Unfortunately, not only do environmental growing conditions vary from year to year
How do you make decisions related to crop production in your greenhouse? The most common decision-making aids are notes made during previous production seasons and reacting to problems that arise. While using notes and reacting to situations as they arise are commonplace, each season and year is going to be different than the previous one.