@article{HGNHB8_2016_v35n4_235,
author={Hyun Ho. Lee and Keun Ki. Kim and Yong Bok. Lee and Youn Sig. Kwak and Suk Chul. Kim and Sang-beom. Lee and Chang Ki. Shim and Chang Oh. Hong},
title={Effect of Phosphate Application on Cadmium Extractability and its Uptake by Rice Cultivated in Contaminated Paddy Soil},
journal={Korean Journal of Environmental Agriculture},
issn={1225-3537},
year={2016},
volume={35},
number={4},
pages={235-240},
doi={10.5338/KJEA.2016.35.4.35},
url={https://doi.org/10.5338/KJEA.2016.35.4.35}
TY - JOUR
AU - Lee, Hyun Ho.
AU - Kim, Keun Ki.
AU - Lee, Yong Bok.
AU - Kwak, Youn Sig.
AU - Kim, Suk Chul.
AU - Lee, Sang-beom.
AU - Shim, Chang Ki.
AU - Hong, Chang Oh.
TI - Effect of Phosphate Application on Cadmium Extractability and its Uptake by Rice Cultivated in Contaminated Paddy Soil
T2 - Korean Journal of Environmental Agriculture
PY - 2016
VL - 35
IS - 4
PB - The Korean Society of Environmental Agriculture
SP - 235-240
SN - 1225-3537
AB - BACKGROUND:To determine effect of phosphate (P) application on Cadmium (Cd) extractability and its uptake by rice plant in Cd contaminated paddy soil, dipotassium (K2HPO4) which was the most effective of P materials to decrease Cd extractability in previous study was selected as P fertilizer.METHODS AND RESULTS:Dipotassium phosphate was applied at the rates of 0, 78, 234, and 390 kg P2O5/ha, and then rice was cultivated in submerged paddy soil from Jun. to Oct. in 2015. Cadmium concentrations in grain, straw, and root of rice plant decreased significantly with increasing application rate of K2HPO4. The trend of 1 M NH4OAc extractable Cd concentration in soil was similar to that of Cd uptake by rice plant. One M NH4OAc extractable Cd concentration was negatively related to soil pH and negative charge. Alleviation of Cd phytoavailability of rice in paddy soil might be attributed to increase in pH and negative charge of soil. Using a quadratic response model, amount of grain yield were related to K2HPO4 application rates as Grain yield = 5.38 + 2.39 ×10-3 K2HPO4 – 6.65 × 10-6 K2HPO4 2 (model R2 = 0.968). Using this equations, the greatest grain yield (5.6 Mg/ha) was at the rate of 180 kg P2O5/ha. At this application rate of P, the Cd concentration in grain was 0.53 mg/kg, implying ca. 23% lower than the control.CONCLUSION:From the view point of heavy metal safety and crop productivity, it might be good P management to apply P fertilizer with 4 times higher rate than recommendation (45 kg/ha).
KW - Cadmium
KW - Immobilization
KW - Phosphate
KW - Phytoavailability
DO - 10.5338/KJEA.2016.35.4.35
UR - https://doi.org/10.5338/KJEA.2016.35.4.35
ER -
Lee, H. H., Kim, K. K., Lee, Y. B., Kwak, Y. S., Kim, S. C., Lee, S. B., Shim, C. K., & Hong, C. O. (2016). Effect of Phosphate Application on Cadmium Extractability and its Uptake by Rice Cultivated in Contaminated Paddy Soil. Korean Journal of Environmental Agriculture, 35(4), 235-240.
Lee, HH, Kim, KK, Lee, YB, Kwak, YS, et al. 2016, “Effect of Phosphate Application on Cadmium Extractability and its Uptake by Rice Cultivated in Contaminated Paddy Soil”, Korean Journal of Environmental Agriculture, vol. 35, no. 4, pp. 235-240. Available from: doi:10.5338/KJEA.2016.35.4.35
Lee, Hyun Ho et al. “Effect of Phosphate Application on Cadmium Extractability and its Uptake by Rice Cultivated in Contaminated Paddy Soil.” Korean Journal of Environmental Agriculture 35.4 (2016): 235-240.
1. Lee HH, Kim KK, Lee YB, Kwak YS, Kim SC, Lee SB, Shim CK, Hong CO. Effect of Phosphate Application on Cadmium Extractability and its Uptake by Rice Cultivated in Contaminated Paddy Soil. Korean Journal of Environmental Agriculture [Internet]. 2016;35(4): 235-240. Available from: doi:10.5338/KJEA.2016.35.4.35.
Lee, Hyun Ho, Keun Ki Kim, Yong Bok Lee, Youn Sig Kwak, Suk Chul Kim, Sang-beom Lee, Chang Ki Shim and Chang Oh Hong. “Effect of Phosphate Application on Cadmium Extractability and its Uptake by Rice Cultivated in Contaminated Paddy Soil.” Korean Journal of Environmental Agriculture 35, no.4 (2016): 235-240. doi: 10.5338/KJEA.2016.35.4.35.