Sirius Minerals (LON:SXX) revealed the fertiliser it plans to produce from the York Potash project in North Yorkshire was valuable in helping develop high-value chilli and celery crops.
Studies carried at Warwick University and Texas A&M in the States used POLY4, a powder and granulated product derived from the polyhalite produced by Sirius.
It outperformed the traditional muriate of potash, or MOP, as an aid to growth and increased yields.
This is important as the combined market for these two crops is US$3.1bn annually.
Managing director Chris Fraser said: "These encouraging results demonstrate POLY4's nutrient availability and efficiency of use from this preferred source of essentially chloride-free potassium."
Last month Sirius revealed some very impressive data on POLY4’s potential impact on cabbage crops.