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- W2378176355 abstract "Exploring effective countermeasures for inhibiting Cd uptake and accumulation by rice grain is urged for ensuring the food safety of rice. A field experiment was conducted to study the effects on grain Cd concentration of different dosages of calcium magnesium phosphate fertilization and foliar ZnSO4·7H2O fertilization. The results showed that most treatments had not significantly increased rice yield but decreased grain Cd concentration with varying extent. The analysis showed that soil pH was increased under all the phosphate fertilizer treatments, in proportional to the application dosage. Accordingly, significant reduction in bioavailable Cd was observed. Statistical analysis indicated a significantly negative correlation of bioavailable Cd with soil pH. Therefore, the reduction in grain Cd concentration under these phosphorus fertilization treatments was attributed to the reduced mobility of soil Cd under increased soil pH. Foliar application of ZnSO4·7H2O solution was not found to increase soil pH, but again decrease soil bioavailable Cd, which was likely to result from the formation of CdS under submerged condition. Therefore, inactivating soil Cd by the pH-increasing phosphorus fertilization and mobility reducing foliar sulphate could alleviate Cd uptake and accumulation in rice grains. However, grain Cd from this heavily polluted paddy was not reduced to meet the National food safety guideline with the studied dosages. It is suggested that alternative crops with low Cd affinity should be cultivated instead of rice for sound agro-production in polluted rice fields." @default.
- W2378176355 created "2016-06-24" @default.
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- W2378176355 date "2009-01-01" @default.
- W2378176355 modified "2023-09-23" @default.
- W2378176355 title "Effects of phosphorus and foliar zinc fertilizers on reducing grain Cd concentration of rice grown in a polluted paddy" @default.
- W2378176355 hasPublicationYear "2009" @default.
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