Coastal Mudflat Saline Soil Amendment by Dairy Manure and Green Manuring

Figure 6

Effects of dairy manure amendment (DMA) on heavy metals concentration for Cd (a), Cr (b), Cu (c), Mn (d), Ni (e), and Zn (f) of maize grain. Vertical bars indicate standard deviations of the means. Columns with different letters show significant difference between dairy manure amendment rates at by LSD’s multiple range test. Cd, cadmium; Cr, chromium; Cu, copper; Mn, manganese; Ni, nickel; Zn, zinc.

(a)

(b)

(c)

(d)

(e)

(f)