Potassium plays a critical role in sweet potato production. But the source of potassium you use also impacts yield and quality of your crop. Protassium+® premium sulfate of potash (SOP) supplies the potassium your plants need, while providing benefits other sources can not match.
For a sweet potato plant to thrive, one of the key nutrients it needs is potassium (K). Potassium impacts the plant's ability to efficiently use nitrogen and aids water uptake. K is also essential for:
Protassium+ SOP offers 17% sulfur in the sulfate form. This means it is readily available to for uptake, unlike elemental sulfur, which requires significant time, correct temperature and moisture to be converted to a form that plants may absorb. Sulfate sulfur additionally benefits sweet potatoes by:
Sweet potato plants remove 1 lb. of K2O per cut of yield. A 200 cwt of yield will remove 200 lbs. of K2O per acre.
Excess chloride can pose a threat to yield and quality in sweet potatoes. Protassium+ fertilizer contains less than 1% chloride, compared to muriate of potash (KCl) which contains 47%. Protassium+ SOP delivers more flexibility for application at any time because there is no worry about chloride or salt toxicity.
A 2007 sweet potato study that compared potassium sources showed that Protassium+ sulfate of potash increased yields and number of marketable U.S. #1 sweet potatoes more as compared to MOP.1
1 Sweet Potato Potassium Fertilizer Source Test, Louisiana State University Agricultural Center, Sweet Potato Research Station, Chase, LA: 2007
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