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
Horizontal airflow (HAF) fans are used to mix warm air near the roof of the greenhouse with the cooler air at ground level, providing a more uniform growing environment Often referred to as mixing or circulation fans, HAF fans are not the same as ventilation fans and should not be run at the same time.
Increased consumer interest in farmers’ markets, buying local and sustainability make this an opportune time for domestic specialty cut flower growers. Local market advantages of specialty cut flowers exist, including product freshness, quality and availability of stems that do not ship well or are difficult to find. Currently, an estimated 73 percent of cut flowers
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.
Pathogens, insects and other pests can seriously impact greenhouse production and reduce profitability. In this fourth article in the Basics of Monitoring series, we provide concepts and tactics to help you develop a comprehensive greenhouse pest and pathogen scouting program. Scouting is a vital part of any integrated pest management (IPM) program and involves systematically
Purdue researchers share their best practices for controlling stem length of common foliage annuals using PGR liner dips.
The cover of an environmental monitoring company catalog contains a quote: “To measure is to know.” Monitoring is an attempt to quantify the invisible, to know before you see. We have become accustomed to this practice in human health and wellness and have our temperature and blood pressure taken. We understand the importance of the
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.