January 24, 2011
Silicon In Floriculture Fertility Programs: Ready Research Results
Silicon (Si) is not considered an essential plant nutrient because most plant species can complete their lifecycle without it. Still, some plant species can benefit from supplemental silicon in a variety of ways. Reports on dozens of ornamental species, including gerberas, roses, asters, New Guinea impatiens, zinnias, sunflowers, poinsettias and orchids, have begun to illustrate wider potential use for this poorly understood element. Beneficial effects reported include improved salt and drought tolerance during production and post-harvest environments; stronger, thicker stems in some cut flowers; and larger orchid liners. In this report, we highlight some positive responses we have observed with supplemental silicon in several species. Powdery Mildew in Zinnia, Phlox, Cucumber & Sunflower Powdery mildew species have a wide range of hosts, including many economically important to the greenhouse industry (e.g. gerbera, chrysanthemum, rose, verbena). Zinnia, phlox, cucumber and sunflower were supplied with 30 to 60 ppm Si (in the […]
March 23, 2009
Energy-Efficient Annuals: Scheduling Bedding Plants
Examples of software interface panels of Virtual Grower. This program can be downloaded free at VirtualGrower.net and can be used to estimate greenhouse energy costs throughout the United States. Desirable scheduling of garden plants includes producing a marketable crop for a specific date with the least amount of inputs as possible. A large contribution to input costs for greenhouse production are overhead expenses (often calculated on a cents-per-square-foot basis). During winter and early spring production, heating can be a large component of overhead costs, especially for growers in the North. As a result, some growers have lowered their growing temperature in an attempt to save on fuel costs. When greenhouse temperature is lowered, plants develop more slowly, so production time increases. The effect of temperature on crop timing depends on several factors, most notably on the crop grown. In this series of articles, we are presenting research-based information on the […]
June 12, 2008
Responses To Temperature & Light
Temperature and light are the two environmental factors that primarily influence production time and quality of both young and finish plants. Knowledge of how crops respond to changes in temperature and light can help growers predict crop timing in a variety of greenhouse environments. One of the questions we’ve been addressing is whether less energy is consumed for heating when growing crops cool but for a longer period of time, compared to growing crops relatively warm but in a shorter period of time. To answer this question, we first need to quantify how plants develop in response to temperature and light. We can then estimate the growing conditions in which the least amount of energy is consumed on a per-crop basis. Response To Light The total amount of photosynthetic light (daily light integral or DLI) that a plant receives can also influence plant development and quality. DLI describes the cumulative amount […]
April 26, 2017
Monitor Potential for Heat Stress in Your Geraniums
Heat stress, which can originate from a lack of air flow around baskets suspended in high areas, causes foliar bleaching and chlorosis of zonal geraniums.
April 25, 2017
Kelly Norris: Diversity is the Key to Growing the Ornam…
Offering a selection of ornamental grasses that cater to customer needs will keep sales from stagnating.
April 25, 2017
Out-Of-This-World Plant Nutrition: Fertilizer Company I…
NASA scientists are growing vegetables on the International Space Station using Florikan’s controlled release fertilizer.
April 25, 2017
41 New Vegetative Petunias From California Spring Trial…
With the abundance of new introductions for the 2018 retail season, we’ve made it easier for you to sift through them by separating out the vegetative petunias from the Northern sites, which includes selections from Westhoff Flowers, Sakata Ornamentals, Danziger, Proven Winners, and Syngenta flowers.
April 24, 2017
Ian Baldwin Offers Examples From Grower-Retailers on Pr…
In March, Baldwin wrote a blog advising grower-retailers to consider raising their prices this spring. The post inspired a number of creative suggestions.
April 22, 2017
American Floral Endowment Announces Winners of 2017 Pau…
Four students pursuing careers in horticulture now have scholarships to help them along the way, thanks to the American Floral Endowment.
April 20, 2017
Terra Nova Nurseries Releases Two New, Attractive Begon…
Stardust is the latest addition to Terra Nova Nurseries’ existing T Rex Begonia series, and Silver is the first introduction to the company’s new Spectre Begonia series.
April 19, 2017
Suppliers Can Offer Technical Solutions for New Cannabi…
Here’s a look at how a few manufacturers have partnered with growers to make their transition into cannabis a smooth one, whether it’s through hands-on guidance or partnering with other industry leaders.
April 18, 2017
Cool Combos From CAST 2017 – Editor’s Choic…
With container gardening becoming more of a lifestyle among consumers than a trend, and breeders continuing to put more effort in container mixes and components, I feel I would be remiss if I didn't share some of the special combinations that not only caught my eye at California Spring Trials, but absolutely took my breath away and made me want to immediately get started gardening.
April 17, 2017
LumiGrow’s Latest Lighting Research Highlighted in Grow…
Industry leaders representing a broad range of vegetable, floriculture, and cannabis producers gathered to learn how to implement modern lighting strategies for their own production.
April 16, 2017
Danziger Invests in Continued North American Business G…
As part of a new business structure for its North American market, Mike Fernandez has been appointed Market Manager North America for Bedding Plants and Perennials, and Kate Zvara was named as Key Account Manager and Retail Specialist.
April 15, 2017
How Oregon Growers Are Making Lean Improvements With He…
The Oregon Nursery Lean Consortium recently helped two Pacific Northwest growers realize significant productivity gains and labor savings.
April 14, 2017
How to Trial a New Product Before You Use It in Your Gr…
Before you apply a new product on a plant, you want to make sure it is safe and effective. Technical experts from Kemin have compiled a five-step guide designed to help you measure the benefits of a new product you want to incorporate into your operation.
April 13, 2017
AmericanHort’s Production Technology Conference To Debu…
The AmericanHort Production Technology Conference is designed to give nursery and greenhouse growers a chance to get hands-on with the latest advancements in production technology and explore the return on investment potential of equipment purchases and upgrades.
April 13, 2017
Research Team Seeking Feedback From Hydroponic Growers
Are you a hydroponic grower of food crops? If so, Michigan State University and Iowa State University researchers are looking for your input.