November 30, 2010
Rotate Or Tank Mix To Avoid Resistance
In this, the final article in our series on making the most of your fungicide dollars, I am considering fungicide resistance management. There are some key topics that should be addressed, and I am covering them by answering questions. Obviously, if your fungicide fails due to resistance, your dollars are wasted. Which pathogens become resistant the quickest? The pathogens that become resistant to fungicides most quickly are those that reproduce quickly and in high numbers. These include powdery mildew fungi (e.g. Oidium), downy mildew fungi (e.g. Peronospora), Botrytis, Pythium, Phytophthora and bacteria (e.g. Pseudomonas, Xanthomonas, Erwinia, etc.). It is interesting that although bacteria develop resistance to copper quite readily, fungi don’t seem to. The FRAC (Fungicide Resistance Action Committee) actually has copper listed as low risk of resistance development. Which fungicides are most likely to have resistance concerns? In this case, the more narrow the mode of action the more […]
August 23, 2010
Getting The Most From Your Fungicides: Application Rate, Interval & Timing
I am sure you’re thinking the headline is somewhat dull, but if you do not pay attention to these aspects of disease control, you will be wasting a lot of money and wind up irritated. This article is part of the series to make the most of your fungicide/bactericide dollars in order to keep your profit margin up. I hope the thoughts I pass on will help some of you make better, more cost-effective decisions regarding fungicide/bactericide use. Does Rate Really Matter? I always ask which rates are being used to treat a disease before I try to suggest a control strategy. It is interesting to me how often the rates being used are too low to be effective. You might as well be spraying water if you use too low a rate. Remember, water is not neutral but something fungi and bacteria thrive on. So spraying very low rates […]
June 22, 2010
Getting The Most From Your Fungicides Part 3: Diagnosis & Application
Are you still guessing which products to use on a disease? Are you even sure you are treating diseases and not environmental, nutritional or even phytotoxicity look-a-likes? I have spent years trying to convince growers they can actually save money if they work with a lab to make sure what they think is a disease and which one it is. In this article I will, hopefully, get you to think more about using a rifle approach to disease control and not the popular shotgun approach. It can save you a lot of money if you use only the best product for the actual problem at hand. Getting Started The first step is always to know what the actual problem is. A lab diagnosis is the best way to determine the problem you are facing. This must be done before the fungicide program is chosen. This time, I will attempt to […]
April 15, 2010
Fungicides: How Controls Impact Efficacy
Chemical control of plant disease remains a popular and often over-used mainstay of our industry. Even the best fungicides and bactericides work better when cultural control methods are used, as well. In fact, if you try to put the entire weight of disease control on the fungicides you apply after a disease appears, you will be out of business quite soon. You cannot afford to waste your money on fungicides if the deck is stacked against them working. Using an integrated disease management program is the only way to make sure you get the most out of your fungicides and bactericides. There are many factors in cultural control of plant diseases, but a few stand out in their effect on fungicide efficacy. Some factors, like new pots and sanitation, may be important in reducing disease but have relatively low impact on the ability of a fungicide to control the disease. […]
February 11, 2010
Testing For Phytotoxicity
In these times of belt tightening, it is a good idea to know how to get the most out of your fungicide dollar. Simply replacing a product with one you think is less expensive may not be the answer. In this series, I will examine some of the places you should focus your efforts to maximize fungicide benefits, including this first article on phytotoxicity. The aim of this series is to remind you of the ways we lose money by skipping steps. Other discussions in this series will be how cultural controls impact fungicide efficacy, choosing the right fungicide, the importance of rate, interval and timing in controlling disease losses, and rotating or tank mixing to avoid fungicide resistance. Phytotoxicity Costs You Money Pesticides are routinely employed by many ornamental plant producers. They are generally effective and safe for the labeled crops, but whenever a new product hits the market […]
August 25, 2008
Producing poinsettias in today’s competitive market requires a great commitment of time and energy (and a bit of Tylenol). Taking steps that make your operation more sustainable can greatly increase your overall efficiency, reduce waste and boost your price per finished plant. Preventing nutrient imbalances that lead to deficiencies and toxicities can add a few extra steps at the start of the season, but you will reap the rewards, not to mention avoid the devastating damage a disease can spread throughout your entire greenhouse. Tracking the nutrient and disease status of your crop will improve your efficiency by saving you time on the end. Here are some ways crop tracking can improve your plant quality as well as overall sustainability. An ounce of prevention is worth a pound of cure; it may be a cliché, but its message is worthwhile. As we come into another poinsettia season, we often are […]
April 28, 2017
Growers Developing Strategies for Better Plant Growth R…
Whether it’s through new liner programs or more consistent grouping of plants, growers continue to find ways to effectively manage their plant growth regulator programs.
April 27, 2017
Hoffman Nursery Cheers On the Next Generation of Hortic…
Hoffman Nursery was a sponsor of the recent 41st National Collegiate Landscape Competition, an event that offers several opportunities for companies in the green industry to meet and recruit the next-generation of horticulturists.
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.