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THE PROOF IS IN THE POTASHThe Eltopia, Washington replicated trial
investigated potassium source impact on
both new and established stands of alfalfa.
In both variations, Protassium+ delivered
higher yields over MOP (muriate of potash).
In new alfalfa stands,
Protassium+ delivered:
• A 600 lb per acre yield advantage vs. MOP
• A 400 lb per acre yield advantage vs.
MOP + Sulfur
• Better stand establishment and
first cutting
A 2012 series of field trials were conducted in Eltopia, Washington to determine which of the two most commonly used
potassium sources had the greatest impact on alfalfa.
In established alfalfa stands, Protassium+
demonstrated more than a one ton per
acre yield over MOP.
METHODOLOGYBoth new and established stand alfalfa
field trials were replicated four times and
involved four treatment variations:
• 200 lb. of K2O as Protassium+ (sulfate of
potash) per acre
• 200 lb. of K2O as MOP (muriate of potash)
per acre
• 200 lb. of K2O as MOP+ sulfur (equal to
the amount in Protassium+) per acre
• 0 lb. of K2O (control)
Optimizing Alfalfa with Protassium+™ Premium Sulfate of Potash
A L F A L F A + K
1-800-743-7258 | PROTASSIUMPLUS.COM
Protassium+ (SOP) significantly increased yield in new and established alfalfa stands.
4.5
4.3
4.1
3.9Protassium+
4.5
UntreatedCheck
4.0
PotassiumChloride
(MOP)
4.2
MOP+S
4.3
New Alfalfa Stands Yield(Tons Per Acre)
7.5
6.5
5.5Protassium+
7.3
UntreatedCheck
6.0
PotassiumChloride
(MOP)
6.1
MOP+S
6.1
Established Alfalfa Stands Yield(Tons Per Acre)
{ }
RESULTS AND CONCLUSIONSIn both variations, alfalfa plants treated
with Protassium+ experienced significant
increase in yield per acre.
From the results, it can be concluded
that the high chloride found in MOP
contributed to lower yields. Salt, like that
found in high levels in MOP, contributes to:
• Poor germination
• Nutritional imbalances
• Seedling injury
• “Tip burn”
• Stunted root and shoot growth
Protassium+ is virtually chloride free and
has the lowest salt index per unit of K2O
among all major sources of potassium.
Plus, it contains 17 percent sulfate sulfur,
which helps support a variety of plant
functions.
The results of the field trial clearly
show that choosing Protassium+ as a
potassium source contributes to greater
yield, higher forage quality and more
revenue for growers.
To learn more about how Protassium+ premium sulfate of potash benefits your alfalfa and your bottom line, please visit Protassiumplus.com.
Deficiency photo courtesy of International Plant Nutrition Institute, IPNI Crop Nutrient Deficiency Image Collection, 2011.
Disclaimer: Field trial results were achieved through accurate and controlled methodologies. Soil type, weather, and growing strategies may impact future results.
Adequate K is vital for promoting
healthy alfalfa plants.
Calculate the revenue benefit of Protassium+ for an established stand.
Know your K uptake in a flash. Visit the Protassium+ premium sulfate of potash Alfalfa Uptake Calculator page or download the free app. Go to protassiumplus.com/knowledge-center and click “Tools”.
1-800-743-7258 | PROTASSIUMPLUS.COM © 2015 Compass Minerals. All rights reserved.
Your alfalfa acres.XIncreased tons per acre from using Protassium+ vs. MOP
Total ton increase from using Protassium+ vs. MOPXCurrent market price per ton
Increased gross revenue opportunityfrom using Protassium+ vs. MOP
1.5
$
$
Your Sample Revenue Calculation - Established Stand
Growing one ton of alfalfa removes 60 pounds of K2O from the soil.{ }