Effects of two boron sources each applied at three rates to the strawberry cv. midway on soil and leaf boron levels and fruit yields

Preplant applications of Borate ‐65 at 0.56, 1.12 and 2.24 kg B/ha were reflected in significant increases in soil and leaf B levels up to one year following boron application. After 2 cropping seasons soil B level did not reflect rate of applied B and Solubor was applied broadcast at 1.12, 2.24 and 4.48 kg B/ha in the spring of the 3rd cropping season. Soil and leaf B levels and leaf marginal necrosis increased compared with control plots at all rates of applied B at full bloom in the 3rd cropping season. Rate of applied B was reflected in significant soil and leaf B increases one year following application. Fruit yields through four cropping seasons were not affected by any source or rate of applied B. A soil B range of 0.15–0.25 ppm and a leaf B range of 20–30 ppm will give optimum crop response from the Midway strawberry.