CoRoN 18-3-6 Plus 0.5%

4.5 out of 5 stars 13 Reviews | 61 Q&A

CoRoN 18-3-6 Plus 0.5%

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Average Rating

4.5 out of 5 stars Rating: 4.7

13 Reviews | 61 Q&A

Product Overview

Controlled Release liquid turf and horticultural fertilizer with chelated iron. CoRoN is a liquid fertilizer with the unique properties that fit turf, ornamental and horticultural feeding needs. CoRoN contains nitrogen from controlled release methylene ureas along with additional nutrients to provide a quick turf green-up and prolonged release. CoRoN does not promote unnecessary surge growth and reduces clipping volumes, while minimizing nitrate leaching. CoRoN is compatible with most fungicides, herbicides and insecticides to allow time-saving tank mix applications. CoRoN is a true liquid solution that is easily applied with standard spray equipment.

Features and Specs

Active Ingredient: Contains 18% Nitrogen (N)(9% Urea Nitrogen, 9% Water Soluble Nitrogen) Available Phosphate (P2O5) 3% Soluble Potash (K2O) 6% Iron (Fe) 0.5%
For use in: Lawns, Ornamental and Horticultural
Application: BENT GRASS: 4.5 - 6.8 lbs. of nitrogen per 1,000 sq. ft. per year applied in multiple applications of 1/8 to 1/4 lb. of nitrogen
BERMUDA GRASS: 9 - 11.5 lbs. of nitrogen per 1,000 sq. ft. per year in multiple applications of 1/4 to 1/2 lb. of nitrogen
Blue Grass & Cool Season Grasses: 3.75 - 4.25 lbs. of nitrogen per 1,000 sq. ft. per year applied in multiple applications
St. Augustine & Warm-Season Grasses: 2.5 - 3.5 lbs. of nitrogen per 1,000 sq. ft. per year applied in multiple applications
TREE & SHRUB: 3 lbs. of nitrogen per 1,000 sq. ft. of landscape area rootinjected or flood-applied in minimum of two applications per year or foliar apply at 1 gal. per 100 gals. of spray solution
ORNAMENTAL & CONTAINER GROWN: 1/2 to 2 gals. per 100 gals. of water - Apply as a foliar spray or as a soil drench
* See label for complete application instructions
Yield: 22 oz. per 1,000 sq. ft.
* See label for complete application instructions
Formulation: Professional Product
Shipping Weight: 27.60 lbs
Manufacturer: Helena Chemical

Details

CoRoN is a liquid fertilizer with the unique properties that fit turf, ornamental and horticultural feeding needs. CoRoN contains nitrogen from controlled release methylene ureas along with additional nutrients to provide a quick turf green-up and prolonged release. CoRoN does not promote unnecessary surge growth and reduces clipping volumes, while minimizing nitrate leaching. CoRoN is compatible with most fungicides, herbicides and insecticides to allow time-saving tank mix applications. CoRoN is a true liquid solution that is easily applied with standard spray equipment.

CoRoN Features:

  • Very low burn potential
  • Much greater plant uptake
  • No Volatilization
  • Minimal Crystalization
  • Wash-off resistance
  • Can be used as a carrier for insecticides, herbicides and fungicides--its sticking ability enhances the application of these products
  • More plant safety -- you can apply 3 to 4 times the units of nitrogen with CoRoN than you could normally apply--without any phytotoxicity.
  • Lowest salt index of any nitrogen form--Compare potassium nitrate at 70, urea at 74 and CoRoN at 5.
  • Excellent translocation--up to 50 percent of CoRoN can be found in treated plants 7 days after application.
5 stars   9
4 stars   4
3 stars   0
2 stars   0
1 star   0
  
  • 5 of 5 Stars

    Good stuff

    By Mark on 04/21/2012

    Verified Purchase

    Worked great,nice and green ahhh. Mixed in some Dimension in hose sprayer, killed two birds with one stone. Two neighbors commented on how green it is, one of witch uses the the Scotts bag stuff. I think i found a my new fertilizer.

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    22 of 22 people found this review helpful

  • 4 of 5 Stars

    Texas heat coron 18-3-6 .5 Fe review

    By Anonymous on 08/03/2013

    Easy to use put half in 25 gallon spray tank and sprayed the acre yard. Two week later neighbors asked what we use on our yard to make it so green. Going to spray again in about another week.

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    19 of 20 people found this review helpful

  • 5 of 5 Stars

    Great Color & Lawn Health without the Excessive Surge Growth

    By Kyle on 06/22/2018

    CoRoN worked great on my Zoysia lawn. Just as advertised, it provides a lush deep green color to turf grass, and does not overstimulate (surge) vegetative growth. The deep green color stimulated by the Iron and Nitrogen seems to last approximately a month depending on soil and weather conditions. I really like that this formula doesn’t seem to surge vegetative growth as much as granular applications typically do. Excessive surge growth in Zoysia can really cause problems when thatch layers start becoming overly thick, and that hasn’t been nearly the issue using CoRon as it has been in the past when I used granular broadcast fertilizer applications. I had the opportunity for somewhat of a field trial this year, as my adjacent neighbor also has a Zoysia turf lawn. He applied 32-0-0 (uncoated) in the same timeframe as I applied the first application of CoRoN to my lawn. The color of my Zoysia several days after application was a much deeper green, so it was evident that the Iron in the CoRoN visibly made a big difference in turf color. The growth rate for his lawn was dramatically higher, as well. Whereas my mowing rate remained at the typical (for Zoysia) 7-10 day interval, his mowing frequency increased to every 4-6 days for the first three weeks after application. The excess growth on his lawn also thickened the density of the turf, as well as thickened the thatch layer, which necessitated an increase in his mowing height. (To be fair in my comparison, had he used a coated slow-release fertilizer (instead of the uncoated Nitrogen-only formula), the difference in surge growth probably would not have been nearly so dramatic). The extremely low (salt) burn potential for CoRoN, and the fact that it can increase efficacy of some herbicides in tank mixes are also big plusses when compared to other fertilizer options. For my early June application, I used it in tank mix with Prodiamine pre-emergent, ProSedge, 2-4 D, non-ionic surfactant, and Lazer spray marker. I saw no visible detrimental effects or stunting of the Zoysia, and the weed control was extremely effective. (The main target weeds were nut sedge and some lingering broadleaf weeds. This was the second application of Prodiamine (generic Barricade), as the initial application was made in early March. The applications were very effective in preventing crabgrass and goosegrass.) I apply with a backpack sprayer, and I advise the use of a marker dye (such as Lazer or Mark-It-Blue) for this method to ensure a more uniform application and no skipped spots. Most university publications recommend 0.5 lbs nitrogen per 1,000 sq ft per application for Zoysia lawns, which works out to 33.5 ounces of CoRoN per thousand square feet. For ease of math and measurement, I round this down to 32 ounces, at which rate a 2.5 gallon container of CoRoN will treat 10,000 sq ft of lawn area. I like to apply at a rate of 2 gallons (overall tank mix) per thousand feet, so I use 8 cups of CoRoN in a 4 gallon backpack sprayer to cover 2,000 sq ft with each tank. I would not necessarily recommend this product for grow-in situations such as sprigging, repair of large turf injured areas, or along edges where spreading of turf grass is desired. In those cases, a slow release granular fertilizer would provide better stolon and growth stimulation, as well as provide longer residual activity in the soil itself. The only other real downside to this product is the price. Coated granular fertilizer blends (such as 24-4-12) will be available in most areas for much cheaper when compared on a dollar per pound of Nitrogen basis. The additional benefits of CoRoN, not available in dry granular fertilizers, is worth the additional cost in my case, though. I also like the 6-1-2 N-P-K ratio, which is a pretty good balance for Zoysia (unless P or K needs are shown to be different through a soil test).

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    17 of 18 people found this review helpful

  • 5 of 5 Stars

    Very Economical, Great Spring Treatment

    By Fred on 04/07/2016

    On my Tampa St Augustine (Floratam/Bitter Blue) lawn, I add a 16-4-8 granular fertilizer in late February to provide quick green up and help build strong roots and protection when the grass is ready to "pop" for Spring. This formula is a perfect supplement (early April and early May) to keep the lush growth growing before I apply Scott's Bonus S in mid June to carry the lawn through August where I don't want to do a lot of root stimulation (disease is big here in June-September on lush growth). This product combined with a liquid for fungus treatment (once) and then by itself (once more) keeps my lawn looking Spring fresh all the way into June. Beware of the nice dark golden color...it will stain your fence and concrete so be careful. I have had great luck using my hose-end sprayer for this. Quick, accurate dispensing, and easy aiming so I only get it where I want to.

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    10 of 11 people found this review helpful

  • 5 of 5 Stars

    Good Product

    By Alan on 02/20/2013

    Verified Purchase

    I have applied this liquid fertilizer with a hose end sprayer last week, and I must say the St. Augustine lawn looks great! It is much easier to apply than the bag products. There are no settings for hose end sprayers, so I had to measure out a 1,000 sq ft of my lawn, and first filled my sprayer with water to determine the amount of product used and time to apply. Once you have that figured out, it is very simple to use, and I am very pleased how the lawn looks in southwest Florida.

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    8 of 10 people found this review helpful

See all 13 customer reviews

Questions & Answers

Have a question about this product?
  
Q
How many oz. of CoRoN 18-3-6 Plus 0.5% Fe per gallon of water?
A
Generally speaking you would typically apply 22 ounces or so of CoRoN 18-3-6 Plus 0.5% Fe in 2-5 gallons of water per 1000 square feet.  The specific amount of product is going to vary based on the type of grass you are treating, but generally 22 ounces per 1000 square feet is the average application. Please read the CoRoN 18-3-6 Plus 0.5% Fe product label for more specific application rates.

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27 of 35 people found this answer helpful

Q
How many square feet does 2.5 gallons of CoRon cover?
A
Generally speaking you would typically apply 22 ounces or so per 1000 square feet.  The specific amount is going to vary based on the type of grass you are treating, but generally 22 ounces per 1000 square feet is the average application.  So, the 2.5 gallon container is 320 ounces, which will potentially treat about 14,500 square feet.

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19 of 24 people found this answer helpful

Q
Can CoRoN be applied before a rain and still be effective?

I applied CoRoN about 4hrs. Before a 4"rain and am concerned about it effectiveness.

A
CoRon actually has a built in "wash off resistance" As long as it had time to completely dry it should not wear off.

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13 of 13 people found this answer helpful

Q
I see that this product is extended release. How long does it continue to provide nutrients?
A
According to the manufacturer, Coron 18-3-6 will last for up to 30 days in the soil. The longevity of Coron 18-3-6 will also depend on the rainfall and soil type in your area. The iron will remain in the soil until the plants utilitze it or if it gets washed away. Please let us know if you have any additional questions.

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8 of 8 people found this answer helpful

Q
What size package does the CoRoN 18-3-6 Plus 0.5% Fe come in?
A
CoRoN 18-3-6 Plus 0.5% Fe is sold in 2.5 gal jugs. Plus, we offer fast free shipping as well.

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7 of 7 people found this answer helpful

See all 61 customer questions

CoRoN 18-3-6 Plus 0.5% 4.5 out of 5 stars Rating: 4.7 (13 Reviews / 61 Q&A)

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