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'. The data revealed that potato responded quadratically to the applied Zn, and 7.5 kg Zn ha' 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.
Chaudhary, R. A., M. Akram, K. H. Gill , M. A. Qazi. (2001) Zinc requirement of potato crop in the Punjab, The Journal Soil & Environment , Volume 19, Issue (1-2).
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