تلخیص
A field survey was conducted to assess the zinc (Zn) status of apple orchards and associated soils in Murree tehsil. Each union council was considered as a grid for selection of apple orchard and Global Positioning System (GPS) was used for site identification. Thirteen apple orchards, i.e., one from each apple producing union council and one from each Punjab Fruit Research Hill Station, Lower Topa and Punjab Fruit Research Hill Station, Sunny Bank were selected. Five apple trees were selected from each orchard to collect plant and soil samples. Zinc deficiency was more prevalent in plant samples in comparison to the soils; all the surveyed apple orchards were deficient in Zn supply while soil testing indicated that 38 % apple orchards were deficient in Zn contents. A positive correlation existed between the plant available Zn and organic matter, clay contents, and silt contents where as negative correlation was observed between soil Zn contents and pH, sand and CaCO3. No correlation was established between the soil and foliage Zn contents.
H. Ahmad1, M.T. Siddique1, I.A. Hafiz, Ehsan-ul-Haq2. (2010) Zinc status of apple orchards and its relationship with selected physico-chemical properties in Murree tehsil , The Journal Soil & Environment , Volume 29, Issue 2.
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