More potassium please: Now's the time to give your fruit and nut trees a heaping helping of special K

摘要

MOST growers know that fall is the best time to apply certain nutrients to nut and stone fruit orchards, especially boron (B), zinc (Z), and potassium (K). But what they may not know, says Roger Duncan of the University of California (UC) CooperativeExtension, is that their trees may not be getting enough nutrients because commonly recommended levels may not be high enough. That's particularly true for potassium, says Duncan, a Modesto farm adviser who works primarily with peach and almond growers.