scholarly journals Combined amendment reduces soil Cd availability and rice Cd accumulation in three consecutive rice planting seasons

2022 ◽  
Vol 111 ◽  
pp. 141-152
Author(s):  
Wenjun Yang ◽  
Shilong Wang ◽  
Hang Zhou ◽  
Min Zeng ◽  
Jingyi Zhang ◽  
...  
Keyword(s):  
Cd Accumulation ◽  
Cd Availability ◽  
Soil Cd

scholarly journals Cadmium availability and accumulation by lettuce and rice

2011 ◽  
Vol 35 (2) ◽  
pp. 645-654 ◽  
Author(s):  
Bruno Fernando Faria Pereira ◽  
Danilo Eduardo Rozane ◽  
Suzana Romeiro Araújo ◽  
Gabriel Barth ◽  
Rafaela Josemara Barbosa Queiroz ◽  
...  
Keyword(s):  
Block Design ◽  
Cadmium Concentration ◽  
Human Consumption ◽  
Plant Parts ◽  
Randomized Complete Block Design ◽  
Edible Parts ◽  
Environmental Agency ◽  
Test Plants ◽  
Cd Availability ◽  
Soil Cd

Among the toxic elements, Cd has received considerable attention in view of its association with a number of human health problems. The objectives of this study were to evaluate the Cd availability and accumulation in soil, transfer rate and toxicity in lettuce and rice plants grown in a Cd-contaminated Typic Hapludox. Two simultaneous greenhouse experiments with lettuce and rice test plants were conducted in a randomized complete block design with four replications. The treatments consisted of four Cd rates (CdCl2), 0.0; 1.3; 3.0 and 6.0 mg kg-1, based on the guidelines recommended by the Environmental Agency of the State of São Paulo, Brazil (Cetesb). Higher Cd rates increased extractable Cd (using Mehlich-3, Mehlich-1 and DTPA chemical extractants) and decreased lettuce and rice dry matter yields. However, no visual toxicity symptoms were observed in plants. Mehlich-1, Mehlich-3 and DTPA extractants were effective in predicting soil Cd availability as well as the Cd concentration and accumulation in plant parts. Cadmium concentration in rice remained below the threshold for human consumption established by Brazilian legislation. On the other hand, lettuce Cd concentration in edible parts exceeded the acceptable limit.

scholarly journals Soil cadmium extraction in Chinese cabbage and cabbage intercropping

2019 ◽  
Vol 49 (11) ◽  
Author(s):  
Jiayue Wan ◽  
Hexigeduleng Bao ◽  
Lihong Huang ◽  
Yanfei Ding ◽  
Zhixiang Chen ◽  
...  
Keyword(s):  
Chinese Cabbage ◽  
Enzyme Activities ◽  
Field Experiments ◽  
Soil Enzyme ◽  
Soil Enzyme Activities ◽  
System Effect ◽  
Cultivation System ◽  
Cd Accumulation ◽  
Soil Cadmium ◽  
Soil Cd

ABSTRACT: Toxic metals contamination of soil has become a serious problem in recent years. In this study, Chinese cabbage (a relatively high-accumulator of cadmium (Cd)) and cabbage (a relatively low-accumulator of Cd) were cultured in monoculture and in intercropping in the Cd-contaminated soil, to evaluate the effect of intercropping on the alteration of Cd extraction. Both the pot experiments and field experiments indicated that intercropping increased the Cd extraction by Chinese cabbage and decreased the Cd extraction by cabbage. Thus, Cd extraction was advanced while safe production was obtained. Further pot experiment was conducted to investigate the alterations of soil Cd fractions, soil pH, and soil enzyme activities to reveal their possible relationship with Cd extraction between different planting patterns. Results revealed that three individual Chinese cabbages in one intercropping pot played the same effect on alteration of these factors as six individual Chinese cabbages in one monoculture pot. The intercropping increased Cd extraction by Chinese cabbage and decreased Cd extraction by cabbage, probably by influencing mechanisms such as soil enzyme activities (especially the urease activity) in the cultivation system. Effect of intercropping on Cd accumulation is an important issue in cultivation of vegetables in potentially contaminated land.

Accumulation and Distribution of Cadmium in Different Rice Cultivars

2012 ◽  
Vol 518-523 ◽  
pp. 277-280
Author(s):  
Jian Guo Liu ◽  
Yi Cheng Huang ◽  
Ming Xin Wang
Keyword(s):  
Rice Cultivars ◽  
Cd Accumulation ◽  
Rice Plants ◽  
Order Root ◽  
Stems And Leaves ◽  
Soil Cd

Cadmium (Cd) accumulation and distribution in rice plants were investigated with six rice cultivars under different soil Cd levels. The results showed that Cd accumulations in different organs were in the order: root » stem > leaf > grain. The magnitudes of the differences among rice organs in Cd accumulations were larger for soil Cd treatments than for the control. The magnitudes of the variations among rice cultivars in Cd accumulations were the largest in grains, followed by roots, and the smallest in stems and leaves, and these were also larger for soil Cd treatments than for the control. Cd absorbed by rice plants were mostly accumulated in roots (about 80% for the control and more than 90% for soil Cd treatments), and only a very small portion was transferred into grains (about 2% for the control and less than 1% for soil Cd treatments). The magnitudes of the variations among rice cultivars in Cd distributions were larger for soil Cd treatments than for the control.

scholarly journals Silicon Amendment Reduces Soil Cd Availability and Cd Uptake of Two Pennisetum Species

2019 ◽  
Vol 16 (9) ◽  
pp. 1624 ◽  
Author(s):  
Qiyu Dong ◽  
Jianbo Fang ◽  
Fei Huang ◽  
Kunzheng Cai
Keyword(s):  
Soil Ph ◽  
Plant Biomass ◽  
Pennisetum Glaucum ◽  
Heavy Metal Stress ◽  
Cd Stress ◽  
Cd Uptake ◽  
Four Levels ◽  
Si Content ◽  
Cd Availability ◽  
Soil Cd

Silicon (Si) plays important roles in alleviating heavy metal stress, but the migrating effects and mechanisms, especially for Pennisetum, are not well studied. In this study, Pennisetum glaucum and Pennisetum glaucum × P. purpureum were used to explore the impacts of Si application on alleviating cadmium (Cd) toxicity and its possible mechanism. Treatments consist of four levels of Cd (0, 10, 50, and 100 mg·kg−1) with or without 2.0 mM Si amendments. Under Cd stress, Si application significantly increased plant biomass and Si content, reduced Cd content, and decreased the enrichment factor in shoots and roots. Si treatment also increased soil pH and soil residual Cd, while reducing available/oxidizable/reducible Cd content in soil at 50 and 100 mg·kg−1 Cd levels, thereby leading to a reduction of the soil’s available Cd. These findings indicate that Si application is effective in alleviating Cd phytotoxicity of Pennisetum, mainly through reducing plant Cd uptake and increasing soil pH and Cd immobilization, thereby reducing Cd bioavailability.

scholarly journals Soil Cd availability to Indian mustard and environmental risk following EDTA addition to Cd-contaminated soil

Chemosphere ◽  
2003 ◽  
Vol 50 (6) ◽  
pp. 813-818 ◽  
Author(s):  
X.J Jiang ◽  
Y.M Luo ◽  
Q.G Zhao ◽  
A.J.M Baker ◽  
P Christie ◽  
...  
Keyword(s):  
Environmental Risk ◽  
Contaminated Soil ◽  
Indian Mustard ◽  
Cd Availability ◽  
Soil Cd

Joint Effect of Cadmium and Chlorimuron-Ethyl on Cadmium Accumulation of Wheat

2012 ◽  
Vol 518-523 ◽  
pp. 426-429
Author(s):  
Cai Xia Jin ◽  
Qi Xing Zhou ◽  
Jing Fan ◽  
Xue Ying Song
Keyword(s):  
Negative Relationship ◽  
Cadmium Accumulation ◽  
Joint Effect ◽  
Antagonistic Effect ◽  
Mature Stage ◽  
Cd Accumulation ◽  
Wheat Shoot ◽  
Chlorimuron Ethyl ◽  
Wheat Tissues ◽  
Soil Cd

The joint effects of Cd and Chlorimuron-ethyl(CE) on Cd accumulation in wheat shoot/root and SPT coefficient of Cd was carried out. Cd concentration in shoot and root increased with increasing soil Cd, but Cd concentration in shoot/root was lower than the same treatment when CE was added, and negative relationship between Cd concentration in shoot (root) and concentration of CE were significant (p<0.05 or p<0.01). There was antagonistic effect of Cd and low CE on Cd accumulation in wheat tissues. Cd concentration in shoot decreased during the period of growth, but the concentration of Cd in root increased from the elongation stage to the florescence, and then decreased from the florescence to mature stage when the concentration of soil Cd was less than 100 mg kg-1, and it decreased when the concentration of soil Cd was 100 mg kg-1. The SPT values of different growth periods decreased during the period of growth.

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