July 23, 2014
Liming Requirements And pH Modification For Pine Wood Chips As An Alternative To Perlite
In the last of a four-article series highlighting the production and use of pine wood chips as aggregates in greenhouse substrates, the researchers found growers do not need to adjust their production practices when 20 percent pine wood chips are used as a perlite replacement.
June 16, 2014
Pine Wood Chips As An Alternative To Perlite In Greenhouse Substrates: Fertilization Requirements
This is the third article of the four article series highlighting the production and use of pine wood chips as aggregates in greenhouse substrates. We found growers do not need to adjust their production practices when 20% pine wood chips are utilized as a perlite replacement.
May 14, 2014
How Pine Wood Chips In Substrates Affect Plant Growth Regulators
This is the second article of the four article series highlighting the production and use of pine wood chips as aggregates in greenhouse substrates.
April 5, 2014
Ethephon Is A Cost-Effective Option For Improved Plant Structure, Preventing Early Flowering And Controlling Excessive Growth
Ethephon is an excellent and cost effective option for improving plant structure, preventing early flowering, and controlling excessive plant growth. It is easy to see why Ethephon has become an essential component of the floriculture PGR toolbox.
December 30, 2013
Basics & Beyond: Fundamentals Of Phosphorus Nutrition
Phosphorus is an essential element, after all.
April 1, 2013
How PGRs Make You Money
How do you know when it is cost-effective to use plant growth regulators (PGRs)? Certainly they can be used to regulate plant growth and size, but that is just one part of the equation. Chemical costs are the primary concern to growers. There is certainly a variable cost associated with using plant growth regulators. The growth controlled with PGRs allows for tighter plant spacing. Thus, there is less square foot per week cost, and a lower fixed cost assigned to the pot. So, we need to evaluate if the fixed cost savings is greater than the variable cost of the PGR application. To provide an example, let’s use geraniums grown in a 4-inch square pot. This geranium crop will be grown for 10 weeks. For four weeks, plants will be placed pot tight at 4 inches by 4 inches. For the final six weeks, the plants will be spaced at […]
January 6, 2012
Height Control For Easter Lilies
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.
September 15, 2010
Preventing Plug Stunting
We have all heard the cliché doctors make the worst patients. Well, sometimes greenhouse growers make the worst horticulturists. We have learned over the years just how far we can push our plants. A case in point is plugs. They often arrive in large batches, usually when there are not enough folks to transplant them or, more likely, when there is not enough space to put finished plants. Of course, when the season is busy, more plug shipments arrive before we have a chance to finish potting the previous ones. The result: Plugs sit on the bench for days or weeks, continuing to grow. They can become quite leggy, sometimes nutrient deficient or, in worse cases, die. But we still need the finished plants. So we pot them eventually and often, they never produce a quality plant. So can anything be done to produce high-quality plants from these plugs? We […]
July 27, 2010
Using The Plant Growth Regulator Calculator
Rounding out the GroCALC software package, PGRCALC is the third and final program that has been updated in the past few months. The calculator has been updated from a Microsoft Excel-based program to a Web-based application that does not require a user download. If you are currently using PGRCALC, you know how this tool can give you confidence in your PGR applications. If you are not familiar with PGRCALC, you will soon realize how easy and quick it is to calculate the amounts of a PGR and water you need to mix for any application. PGRCALC will calculate the amount of an individual PGR product to add to a volume of water to obtain a desired concentration. In addition, it will also calculate the cost of the total application and cost per pot. Getting Started To use the new version of PGRCALC, point your Internet browser to www.nhfloriculture.com. You will […]
April 15, 2010
Using The Alkalinity Calculator
If you have tried to use the Greenhouse Media Lab Acid Addition Calculator, the alkalinity calculator from Purdue University and North Carolina State University in the last couple years, you may be disappointed that it no longer worked. The problem lies in the fact that when Microsoft updated Excel, the alkalinity calculator was no longer compatible with the program’s latest version. Fortunately, a solution was developed with the support of the Fred C. Gloeckner Foundation. If you’ve never used the alkalinity calculator, then welcome to the redesigned alkalinity calculator, AlkCALC. AlkCALC is an application that easily calculates the amount of nitric, phosphoric or sulfuric acid required to neutralize alkalinity in your irrigation water to a desired level. In addition, it will determine the amount of nutrients added by acid injection and the cost of your specific acid injection needs. Getting Started Unlike previous alkalinity calculators, AlkCALC does not need to […]
June 18, 2008
Calculating Crop Costs
There is no way around it: Profit = Revenue–Expenses. When we need to increase, or more commonly maintain, profit, the only way to do so is by increasing revenue or decreasing expenses. The standard reaction is to target the most obvious expenses–labor, fuel costs, plant materials or drop unprofitable crops and product lines. While that sounds simple enough, every business owner knows that actually doing this is much more difficult and time consuming than it seems. The solution–make your best guess as to which expenses can be reduced and which crops are unprofitable. Even in this day when a large number of tools are available to help analyze a business’s finances, a surprisingly large number of business owners operate from instinct and lack numbers upon which to make important decisions. So where to start? There are a number of ways to look at a business’s expenses and crops. The simplest method, […]
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.