Effects of fly ash on yields and elemental composition of two vegetables, Brassica parachinensis and B. chinensis

摘要: Abstract Coal fly ash was applied at rates of 0, 3, 6 and 12% to a sandy soil loam evaluate its effect on yields two vegetable crops, Brassica parachinensis B. chinensis . The addition the highest rate raised pH from 7.3 6.7 9.7 8.6, respectively. Electrical conductivity also increased 56 2035 μmhos cm −1 for 135 341 loam. Hence, had higher buffering capacity receiving amendment than soil. As compared with 0% treatment, were found be significantly 3% ash-amended soil, while level lower. For loam, yield showed this amendment. Tissue Fe Zn contents consistently decreased an increase in Accumulation Mo Mn observed Cu Ni did not exhibit any general trend accumulation. Both accumulation reduction metals plant tissue correlated soils. Nevertheless, no toxicity symptom noticed treatment groups. However, more 10% caused significant growth especially low such as used present experiment.