Abstract
Abstract ‘Bush Blue Lake 47’ snapbeans were grown in 1980 with 12 fertilizer treatments at 3 sites in production areas of northeastern Pennsylvania where the soil pH was 6.6–6.7 and soil P levels were high. The application of Zn at 11.2 kg/ha as sulfate, chloride, oxide or chelate did not increase snapbean yields. Leaf Zn was increased more effectively by applied zinc sulfate or chloride than by zinc oxide while zinc chelate did not increase leaf Zn. The application of P lowered leaf Zn at 2 sites. Nitrogen applied as ammonium sulfate increased leaf Zn and Mn but when N was applied as urea, only leaf Mn was enhanced. When lime was applied, leaf Zn and Mn were lowered at only one site.
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