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The response of one-year-old tung trees to rates and placement of zinc as affected by selected soil series


, : The response of one-year-old tung trees to rates and placement of zinc as affected by selected soil series. Diss. Abstr, 20: 16

In field experiments zinc sulfate mixed with 3 cu. ft. of soil in the rooting zone reduced total growth and feeder-root concentration in 3 out of 4 test soils. In pot experiments top and root growth increased when leaf Zn was increased up to 0.77 me/100 g. ; above this level top growth was reduced and this was followed by a reduction in root growth.

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