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August 08, 2003
A number of new and innovative methods of applying plant growth regulators (PGRs) have gained EPA approval in recent years. PGRs may be applied by "sprench" (combination of spray and drench applied as a high volume, low concentration spray to the...
July 10, 2003
Fuel prices continue to fluctuate, causing heartburn and headaches for growers as they receive their monthly fuel bills during periods of cold weather. When fuel costs are high, some growers in cold climates (such as the Northern United States) have...
July 10, 2003
FloraStar, in cooperation with the University of Florida, has selected the winners of the first FloraStar Elite Performer trials that are designed to evaluate how well a variety performs for the grower. The program will focus on vegetative annuals,...
July 10, 2003
The following report of diascia and nemesia trials conducted at the University of Florida trial gardens in Gainesville, Fla., was conducted in the winter of 2002. Gainesville is in USDA Zone 8b and is part of an ongoing research program to evaluate...
July 10, 2003
Have you noticed how popular calibrachoas have become? It is an interesting crop. They can either look very nice or very straggly. The flowers are small, and unless there are lots of them, the plant does not give much of a show. In terms of...
July 10, 2003
Bare root perennials are dormant plants with the soil removed from the roots. They are typically field grown for a period of time, usually one year, and harvested. Once the plants are dug, the tops are trimmed down to approximately 1 inch from the...
July 03, 2003
Methyl bromide is an important part of ornamental production. The combination of methyl bromide and chloropicrin has long been used to control weeds, nematodes and plant pathogens like Pythium. The majority of this fumigant is used for strawberries...
July 03, 2003
The Lamiaceae (mint) family is a relatively small family, containing about 180 genera of herbs and shrubs, only about 68 of which are produced commercially. These cultivated genera include many of our culinary (Mentha, Ocimum, Origanum, Perilla,...
July 03, 2003
Now that the 2003 spring season is behind us, it's time to recap problem areas. Working with my clients and traveling around the United States giving talks, I can narrow down the number of areas that need work to five. There are obviously more...
July 02, 2003
Hardy hibiscus is an old-time garden favorite riding a new wave of popularity. Hibiscus moscheutos is a marshland native of the eastern United States and has hardiness in USDA Zones 4-9. With new developments in plant breeding, today's hibiscus...
March 18, 2003
As we complete more research on plant response to plant growth regulators (PGRs), it may be helpful to start looking for any commonalities in the responses by plants of the same genus or family. Using information from our own research or other...
March 18, 2003
This is the season when every grower starts worrying about how to control plant growth, whether plugs, bedding flats, pots or baskets. All growers should be doing whatever they can to control temperature, provide more light, reduce humidity,...
February 28, 2003
It's been such a long time since we've had a new plant growth regulator (PGR) in floriculture. Actually, flurprimidol, the active ingredient in the new SePRO product being labeled in the United States as Topflor, is not a new compound. In fact, Paul...
February 28, 2003
B-Nine and Cycocel tank mixes have been effectively used by growers for many years. However, there are still many growers who have not yet taken full advantage of this useful tool. The primary advantage of the B-Nine/Cycocel tank mix is that it...
February 28, 2003
Managing plant height, insects and mites, and the many diseases that affect greenhouse-grown bedding and potted plants are some of the many challenges that face today's growers. Most pest and plant growth problems are controlled by using a variety...
January 28, 2003
Plant growth regulators (PGRs) are commonly applied to container-grown plants to control stem elongation and produce high-quality, compact plants. Flurprimidol was a molecule discovered more than 20 years ago by Eli Lily and Company. It was...
January 28, 2003
Getting an early start on spring sales is critical to growers around the United States. The problem is finding plant material that can be grown under cool conditions, will flower under early spring short-day photoperiod, and has some tolerance of...
November 05, 2002
Over the past several years, there have been few changes in the growth regulators available to the greenhouse industry. While there have been many new insecticides and fungicides introduced, we have been working with the same height control products...
October 10, 2002
With more and more new vegetative annuals being produced, growers are finding themselves doing more pinching and cutting back to stimulate better branching and to control growth. Many of the new vegetative annuals are quite vigorous and designed for...
July 09, 2002
B-Nine and Cycocel have been effectively used as a tank mix growth regulator application for many years. The major benefit of this tank mix is that it provides an easy-to-apply, medium-activity growth regulator application. The spray volume is not...