Attenuated cadmium and arsenic enrichment in rice by co-application of organic composting and chemical fertilization.

A pot experiment was conducted on arsenic (As) and cadmium (Cd) co-contaminated soil to discern the influence of varying proportions of pig manure compost (PM) vis-à-vis chemical fertilizers (NPK) on the mitigation of Cd and As absorption by rice. Our findings illustrated that by increasing the PM proportions from 25 to 100%, it manifested a statistically significant reduction in the mobilized fractions of Cd, accounting for up to 77% reduction in soil CaCl-Cd concentrations. Conversely, the NaHCO-As reactions were contingent on the distinct PM application rates.

The fate and transport of pesticide seed treatments and its impact on soil microbials.

In order to better understand the environmental impact of systemic pesticides used in the seed treatment, we conducted a field trial by planting maize seeds treated with thiamethoxam (TMX) and the combination with difenoconazole (DFZ), two of the commonly used systemic pesticides in the seed treatment program. We found most of pesticide residues were retained in the 0-10 cm layer from soil surface. Pesticide residue levels exhibited a significant decreasing trend from the seedling to milk period.

Assessing Dietary Pesticide Intake and Potential Health Effects: The Application of Global Metabolomics Analysis.

Scientific information is not yet available to provide insight into how individual metabolome might be affected by the presence of pesticides in regular diets. This study aimed to evaluate the perturbation of metabolomic pathways in children who switched their diets from conventional foods to mostly organic foods for five consecutive days. We selected 46 child-matched spot urine samples with distinct differences of urinary pesticide metabolite levels between the conventional and organic eating days and then analyzed those urine samples on three analytical platforms to perform global metabolomics analysis.

[Effects of Different Organic Materials on Absorption and Translocation of Arsenic and Cadmium in Rice].

A pot experiment was carried out to study the impacts of five organic materials (rape straw, broad bean stalk, peat, pig manure compost, and biochar) on the availability of arsenic (As) and cadmium (Cd) in soil, the amount of iron plaque on the root surface, as well as the uptake and translocation of As and Cd in rice grown in an As/Cd co-contaminated yellow paddy soil. The results indicated that the application of organic materials significantly increased the contents of the soil organic matter and the yield of rice. The application of broad bean stalk, peat, pig manure compost, and biochar remarkably increased the soil pH, while the application of rape straw exerted no significant influence.