Per Cubic Foot or 7 1/2 gal. with 44 - 88 gallons of water per Acre (9.0 - 12.0 oz. References Question: Several of my growers have been using the formula listed in section #11 on page 72 in the 2015 ND Weed Control Guide to assess their water quality and AMS requirements: Feel free to use and share this content, but please do so under the conditions of our, Equation Used to Calculate Rate of AMS (07/02/15), NDSU Crop & Pest Report - September 24, 2020, NDSU Crop & Pest Report - September 10, 2020, NDSU Crop & Pest Report - August 27, 2020, NDSU Crop & Pest Report - August 13, 2020. Most growers (should) use full glyphosate rates to delay resistance in weeds. Spread it around the bush then water it in thoroughly. The answer will be the ppm of the element per oz of the fertilizer in 100 gal of water. If you have an eight ounce cup handy, you would need to add two of these, full to the top, to the 5 gallons of spray. Typical water levels on sprayers is 10-20 gallons per acre. when ammonium sulfate is used as an additive to the tank mix. Always add a nitrogen source if allowed and not restricted by the label! Figure 1. A simple formula was developed by weed scientists at North Dakota State University to show the minimum amount of AMS needed to overcome hard water antagonism.  Since we know which hard water cations are most problematic (K, Na, Ca, Mg, Fe), it is fairly easy to calculate the amount of ammonium sulfate needed to condition the water to reduce the negative implications of hard water antagonism. Figure 5. Only a small amount of ammonium sulfate is added to the herbicide - 8 to 20 pounds per 100 gal-lons of water. Research Institution. of actual N per 1000. Additional Ammonium sulfate is needed only under extremely hard water conditions. It is difficult to calculate the amount of ammonium sulfate needed to overcome Ca on the leaf surface. This application shall provide 0.09 - 0.12 lb. Volumes of Fertilizer for These Volumes of Soil. I don't use Ammonium Sulfate so have no personal info on dosage. Cups.  Since AMS has typically been a low cost spray water conditioner, the additional amount added to a spray tank has not been viewed as a major expense. Glyphosate molecules in hard water plus Ammonium Sulfate (AMS). of Ammonium Thiosulfatewith 1 - 2 gallons of water per 1,000 sq. It is from this research and also from an extensive water quality testing campaign conducted by Winfield with thousands of water samples tested across the U.S that we have concluded with a general recommendation to “Always add AMS at 4 to 6 lbs/100 gal of water”. Water in ND, SD, and MT is often high in sodium bicarbonate which does not normally occur in other areas of the U.S. Calcium levels above 150 ppm and sodium bicarbonate levels above 300 ppm in spray water can reduce weed control in all situations. Second reaction: ammonium (from AMS) binds with glyphosate to form glyphosate-ammonium. © 2020 Purdue University | An equal access/equal opportunity university | Copyright Complaints | Maintained by Pest&Crop newsletter. This is the reason why herbicide labels typically contain statements that indicate that rates of AMS, 8 ½ to 17 pounds of AMS per hundred gallons of water, … How to Use Greenway Biotech Ammonium Sulfate Fertilizer for Liquid Application Dissolve 1-3 tablespoons of Greenway Biotech Ammonium Sulfate fertilizer per one gallon of water. Can you add ammonium sulfate (AS) to Roundup?  However, in this era of low commodity prices and pressure on farmers to reduce input expenses, there may be an opportunity to reduce the amount of AMS applied and not compromise herbicide activity. **Important point: Even in water with no or low antagonistic cationic salt content where no sulfate is needed, a generous amount of ammonium is required to form ammonium-herbicide for optimum herbicide activity. This breaks down to approx 3.2 oz per gallon of water. Rinse a second time in a bath of room temperature water. The equation in section #11 does not address the amount of ammonium in AMS needed to enhance/optimize the herbicide. Was this answer helpful to you? Last thought – A great scientist (Dr. John Nalewaja) once said the following, “The best adjuvant for Roundup is more Roundup”. You could either spray the leaves with Ammonium Sulfate solution or just water the plant. How much ammonium sulfate to use. 100 300 500 1000 . Use it at the rate of between 8 ½ and 17 lb. Adding more AMS than called for to neutralize the effects of cations may improve glyphosate activity by providing extra N that helps weak acid herbicides like glyphosate pass through cell membranes. Always read and follow the label instructions on the product container(s) before using. Enjoy, Pete D. Tall fescue (Festuca arundinacea), a cool-season grass hardy in USDA zones 4 through 7, also requires 2 to 4 pounds per 1,000 square feet per year, but cool-season grasses are fertilized in midspring, early summer, late summer and late fall. Your typical range is 2-4 oz per gallon of water. Water conditioning trials have been conducted at NDSU for well over 30 years and researchers have repeatedly found that AMS is the most economical and effective water conditioner for glyphosate and many other herbicides.  Sometimes we call this process chelating and it is well known that glyphosate can chelate Ca2+ ions, and that calcium can tie up multiple glyphosate molecules (Figure 1).  To correct this problem, when you add AMS (NH4)2SO4 to the tank, the ammonium (NH4+) disassociates from the sulfate (SO4-2) and the sulfate preferentially binds to the positively charged hard water cations. Ammonium sulfate has also been used in flame retardant compositions acting much like diammonium phosphate. + (0.009 X ppm Ca) Remove the hide from the neutralizer and rinse in clean water. Is additional Ammonium sulfate needed when using AMS-Supreme ™? I know it's recommended you put the AMS in first at 17 and a half pounds per hundred gallons of water and I am looking for some advice. While this formula can be used to overcome the hard water cations in the spray solution (spray tank), the formula does not take into account hard water cations on plant leaf surfaces, which are fairly prevalent. 1/2 1 1/3 2 1/4 4 1/2 .  Additionally, after antagonistic minerals are neutralized by the sulfate, the ammonium can bind with the herbicide to form the ammonium herbicide salt, which can more effectively pass through the plant cuticle resulting in greater herbicide absorption, in some cases increased herbicide translocation, and overall greater herbicide efficacy.  This ‘physiological’ effect of AMS enhancing foliar herbicide activity even in the absence of hard water is important to keep in mind when considering adjuvant products that contain less ammonium, yet claim to be a replacement for AMS. 1 gallon.  It is highly likely that AMS rates can be reduced to the lower end of the recommended rate and herbicide activity will not be compromised. Also re-agitate 2-3 min before spraying another job w/ mix still in tank. pppldj uses 1 Tbsp per 2-1/2 gallons of water So for example, you can not dissolve 78 grams of ammonium sulfate in 100 milliLiters of 80 degree water and then cool it to 60 degreees with out 5 grams of amonium sulfate precipitating out of solution, because the max solubility of ammonium sulfate at 60 degrees is only 73 grams per 100 milliLiter. + (0.042 X ppm Fe). So you are legally allowed, but should you? ft. When dyeing with Washfast Acid Dyes, use one teaspoon of ammonium sulfate per gallon of dyebath (5 ml per 4 liters). Rate Per Acre Lbs. West Lafayette, IN 47907, An equal access/equal opportunity university. This site is supported in part by the Crop Protection and Pest Management Program [grant no.  Many plants, such as velvetleaf (Figures 4 and 5), contain Ca on the leaf surface, and additional sulfate is needed to overcome the antagonism which can occur after the spray solution leaves the nozzle.  It is difficult to calculate the amount of ammonium sulfate needed to overcome Ca on the leaf surface. Allow enough time for complete dissolution before adding additional adjuvants or herbicides. 2017-70006-27144/accession 1013592] from the USDA National Institute of Food and Agriculture. Agitate the tank water while slowly adding the ammonium sulfate. 1/4 3/4 1 1/4 2 1/2. If you have trouble accessing this page because of a disability, please contact Pest&Crop newsletter at luck@purdue.edu. Student Focused. Mixed Fertilizers or Potassium chloride or Ammonium phosphate. Fortunately AMS is VERY CHEAP, so this shouldn’t inhibit its use.  However, we would advise that it will be important to understand your water hardness test levels before severely reducing AMS rates. Figure 3. Effect of hard water cations on herbicide efficacy of weak acid herbicides. Long Answer: Two reactions occur with AMS. 20 percent multiplied by 75 is 15, which is the ppm of Nitrogen in 1 oz of Ammonium Sulfate per 100 gal of water. Ammonium sulfate is purchased in 2 pound bags and mixed at only 0.2 pounds per gallon of feed soluion. AMS-Xtra ™ contains 3.4 pounds of Ammonium sulfate per gallon. Question: Several of my growers have been using the formula listed in section #11 on page 72 in the 2015 ND Weed Control Guide to assess their water quality and AMS requirements:  lbs AMS/100 gal = (0.002 X ppm K) + (0.005 X ppm Na) + (0.009 X ppm Ca) + (0.014 X ppm Mg) + (0.042 X ppm Fe). LIQUID AMMONIUM SULFATE 40% SOLUTION DESCRIPTION Liquid Ammonium Sulfate (LAS) is a clear to pale yellow odorless liquid solution.  Because of lower commodity prices and grower interest in keeping input expenses as low as possible, I thought it would be a good time to review this topic and the AMS equation to help applicators and farmers plan for spring and summer herbicide applications. It occurs in crystals with particle size that is variable, colored white to beige (IPNI 2012). The 0.5 lb of AMS is much less than the 8.5 to 17 lbs/100 gallons of water that is recommended on the Roundup labels. Yes No Presently he is considering inducting liquid AMS versus handling the dry product this year for their post work which is a fair amount of work currently with the dry bags. Use only a “spray grade” ammonium sulfate product. To supply 4 pounds of nitrogen per year, apply 2/3 pound ammonium sulfate at each application. What is the application rate for Ammonium Sulfate to dissolve in water (foliar application)? ND water often contains a combination of sodium, calcium, magnesium, and iron and these cations are generally additive in the antagonism of herbicides. The ammonium sulfate fertilizer or sulfate of ammonia ((NH 4) 2 SO 4; sulfate is also spelled sulphate) is sometimes called ammosul or further abbreviated as AS or AMS.It is a chemical compound that is primarily used as a nitrogen fertilizer with other minor uses. Always read and follow the label instructions on … For every gallon of water add 1 lb of Aluminum Sulfate. Please keep in mind that the benefit of AMS goes beyond conditioning hard water since improved weed control with herbicides and AMS can even be observed when using de-ionized (distilled) water.  Thus, a good rule of thumb would be to add more AMS to your spray solution than what is specifically calculated above for your hard water to account for this ‘physiological’ benefit and fall within the herbicide label requirements for AMS. First, we would like to review the reasons for using ammonium sulfate with postemergence herbicide treatments. Ammonium Thiosulfate (ATS) as an Ammonium Sulfate (AMS) Replacement (06/01/17) He normally uses 8.5 lbs. If you know the dosage / gallon multiply by 40 to get the amount or dose needed to create 16 oz of the Liquafeed concentrate. Figure 2. Teaspoons. After antagonistic minerals are neutralized by the sulfate then the ammonium can bind with most postemergence herbicides and form the optimum ammonium-herbicide salt (glyphosate-NH4, dicamba-NH4, Poast-NH4, 2,4-D-NH4, etc.). (3.34 divided by 0.21 = 15.9 ounces or one pound). CHEMICAL PROPERTIES PROPERTY SPECIFICATIONS Any opinions, findings, conclusions, or recommendations expressed are those of the website author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture. 5 gallons . First reaction: sulfate (from AMS) will bind with cationic minerals in the spray water to form Ca-sulfate, Mg-sulfate, Fe-sulfate, etc. Apply 1 ounce ammonium sulfate per blueberry bush three times in the first year, rising to 4 ounces in the fourth year. We have received a few questions this winter and spring about ammonium sulfate (AMS) rates to use with postemergence herbicides and how much is needed to overcome hard water issues. A recipe posted in the DyersLIST mailing list in 1998 by Don Weiner, formerly of PRO Chemical & Dye, calls for 13.6 grams of ammonium sulfate per pound of yarn in 2.5 gallons of water. This ammonium-herbicide molecule can more effectively pass through the cuticle resulting in greater absorption and greater herbicide efficacy. Effect of Ammonium Sulfate (AMS) on velvetleaf control with glyphosate in the greenhouse. As an example, Ammonium Sulfate contains approximately 20 percent Nitrogen. Keep bypass agitation on if you sit idle mid job. The equation listed above can be used to calculate the amount of sulfate in AMS that is needed to overcome antagonistic minerals in the spray water.  Some water in this region may have low mineral content and when using the equation only a small amount of AMS will be calculated to nullify the hard water. The addition of 8.5 to 17 pounds of AMS per 100 gallons of water is generally recommended to improve glyphosate activity. Growers using the equation and adding AMS only at 0.5 lbs/100 gal may overcome herbicide antagonism from low mineral content in water but the low amount of AMS will not provide sufficient ammonium to optimize herbicide activity – the 0.5 lbs of AMS may have enough sulfate to bind minerals but it does not contain enough ammonium to enhance the herbicide. If not read the label, and apply the recommended amount, this can range from 4.25- 17 lbs of AMS/100 gallons. I started out the year using an AMS substitute called rRequest and a while back after reading a study on them I saw that spray grade granular ammonium sulfate by far gets the best kill with Roundup. Subscribe to receive weekly PDF via e-mail, Subscribe to a feed  of individual articles. 4 12 20 40 . Avoid problems mixing AMS with herbicide. "The amount of AMS can be adjusted based on water hardness if it is known, and a rate of 8 pounds per 100 gallons may be adequate for many sources of water." 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