Abstract:
Fertilizer zinc (Zn) requirement of potato crop was assessed through ten fertilizer
experiments conducted on farmers' fields in Lahore and Gujranwala divisions during
1996-97 to 1999-2000. The levels of Zn put to test were 0, 2.5, 5.0, 7.5, 10.0, 12.5 and
15.0 kg Zn ha'1. The data revealed that potato responded quadratically to the applied Zn,
and 7.5 kg Zn ha'1 appeared to be the optimum dose for optimizing potato yield.
Application of Zn at planting was found to be the best time of its application
