New potassium foliar spray boosts potato yields by up to 30 per cent, says Solufeed

K-Leaf, a refined formulation of potassium sulphate, is the first product able to deliver potassium to leaves via modern field sprayers, the fertiliser supplier claims.

Foliar potassium is known to enhance nutrient uptake by the roots and to increase resistance to pests and diseases, and Solufeed says there is growing evidence that it can "dramatically" increase tuber size and overall yield.

According to managing director Dick Holden: "Foliar sprays are not a substitute for soil applied fertiliser, but potassium uptake is not uniform and can reach a peak at critical stages in the crop cycle such as tuber formation."

When the crop is unable to satisfy its instantaneous requirement for potash via root uptake, hbe said, ""timely application of K-Leaf can be hugely beneficial".

A video on the Solufeed website shows how readily K-Leaf can be dissolved in the tank.

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