Residual effects of combinations of limestone, zinc and manganese applications on soil and plant nutrients under mild and wet climatic conditions

Abstract

Kowalenko, C. G. and Ihnat, M. 2013. Residual effects of combinations of limestone, zinc and manganese applications on soil and plant nutrients under mild and wet climatic conditions. Can. J. Soil Sci. 93: 113–125. A field trial from 1979 through 1993 with three limestone and five zinc (Zn) and manganese (Mn) treatments applied at various intervals on several different crops was used to assess residual treatment effects on crop yields and nutrient contents, and Mehlich-3 soil element extractions. Limestone (0, 9 and 19 Mg ha−1) was applied in 1979, 1981 and 1986. Micronutrients (Zn at 2.3 kg ha−1 (Zn), Mn at 2.3 kg ha−1 (Mn1) and 4.5 kg ha−1 (Mn2), and Zn+Mn1) were applied to the foliage of cauliflower in 1979, 1980, 1982, 1984 and 1985, and incorporated into the soil in 1988, 1989 and 1990 prior to growing oats. From 1991 through 1993, the test crop was orchard grass (Dactylis glomerata L.). The historic limestone treatments that were completed in 1986 continued to affect grass growth with up to 7% incre...