JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Dynamics of Exchangeable Magnesium of Soil in Long-term Fertilization Experiment
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Dynamics of Exchangeable Magnesium of Soil in Long-term Fertilization Experiment
Kim, Myung-Sook; Park, Seong-Jin; Lee, Chang-Hoon; Yun, Sun-Gang; Ko, Byong-Gu;
  PDF(new window)
 Abstract
Monitoring of soil fertility by long-term application of fertilizers is necessary to improve the fertility of soil and the productivity of crop. The objective of this study was conducted to investigate the changes of exchangeable Mg by continuous application of fertilizers from 1969 to 2014. The treatments were no fertilization (No fert.) and fertilization (NPK, NPK+C, NPK+S, and NPK+CS). The concentration of exchangeable Mg in No fert., NPK+C, and NPK+S treatments tended to increase from 1965 to 1975, but decrease gradually from 1976 to 1987, and increase again after 1988. Based on these, the changes of exchangeable Mg were divided into period I (`69 ~`75), period II (`76~`87), and period III (`88~`14). Especially, exchangeable Mg decreased in the period II. This was presumed that a significant amount of Mg from topsoil were leached into subsoil by break of plow pan and some of subsoil was incorporated into topsoil according to change of plowing depth by replacement of tillage machinery. It could be possible that exchangeable Mg in NPK, NPK+S, and NPK+CS was accumulated in the depth of 15~20 cm. For the period III, exchangeable Mg in No fert., NPK, NPK+C, NPK+S, and NPK+CS treatments increased at rates of 0.013, 0.018, 0.015, 0.023, and respectively. Exchangeable Mg level in NPK+S was lower than the other treatments in the period I and period II, but higher than in the period III. This result was attributed to replacement of silicate fertilizer type from wollastonite (Mg 0.3%) to silicate fertilizer (Mg 3%). Also, exchangeable Mg level of No fert. treatment increased, which showed that Mg concentration of irrigated water had the greatest impact on Mg accumulation of soil. Recently, Mg level of irrigated water tended to increase, indicating that Mg concentration of water will affect greatly the concentration of exchangeable Mg of soil in the future. Like these, the changes of exchangeable Mg were greatly influenced by agricultural environment such as plowing depth, plow pan, content of fertilizer, and quality of irrigated water. Considering these agricultural environment, the proper management of soil is needed for the improvement of soil fertility and crop productivity.
 Keywords
Exchangeable magnesium;Dynamics;Long-term experiment;Impact factors;Paddy soil;
 Language
Korean
 Cited by
 References
1.
Albrecht, W.A. 1975. The Albrecht papers. Vol. 1: Foundation concepts. Acres USA, Kansas City.

2.
Boivin, P., F. Favre, C. Hammecker, J.L. Maeght, J. Delariviere, J.C. Poussin, and M.C.S. Wopereis. 2002. Porcesses driving soil solution chemistry in a flooded rice-corpped vertisoil: analysis of long-term monitoring data. Geoderma, 110(1-2):87-107. crossref(new window)

3.
Jeong, Y.G. J.W. Hong, and H.S. Ha. 1987. Study on the influence of Ca and Mg saturation ratio of soil on the uptake of Ca, Mg, and K by rice plant. Korean J. Soil Sci. Fert., 20(2):115-121.

4.
Kim, I.H., Y.P. No, and Y.T. Jung. 1987. Effects of long-term application of compost on physical properties of paddy soils. Res. Rept. RDA (P.M&U), 29(1):54-59.

5.
Kim, M.S., S.J. Park, C.H. Lee, S.G. Yun, and Y.K. Sonn. 2015. Changes of chemical characteristics of soil solution in paddy field from fifty-eight years fertilization experiments. Korean J. Soil Sci. Fert., 48(1):22-29. crossref(new window)

6.
Lee. D.S., M.H. Lee, and K. Jeon. 1960. Monitoring of irrigated water quality. J. Korean Agricultural Chem. Soc. (first issue), pp:21-25.

7.
Lindsay, W. L. 1979. Chemical equilibria in soils. John Wiley & Sons, Inc. New York.

8.
NAAS (National Academy of Agricultural Science). 2010a. Fertilizer Recommendation for crops (revision). Rural Development Administration (RDA), Suwon, Korea.

9.
NAAS. 2010b. Method of soil chemical analysis. RDA, Suwon, Korea.

10.
NAAS. 2012. Annual report of the monitoring project on agro-environmental quality. RDA, Suwon, Korea.

11.
NIAST. 2003. Management practices of soil fertility for environment-friendly agriculture. 50th anniversary symposium of Long-term experiments. RDA, Suwon, Korea.

12.
Ministry of Environment. 2008. Korean standard methods for water quality. Gwacheon, Korea.

13.
Oh, W.K. 1985. Studies on the effect of the application of organic matters on some of the physical and chemical characteristics of paddy soils. Res. Rept. RDA, 9(1):175-208.

14.
Tisdale, S.L. and W.L. Nelson. 1975. Soil fertility and fertilizers. Macmillan Publ. Co., Inc., New York, NY.

15.
Zhang, M. and Z. He. 2004. Long-term changes in organic carbon and nutrients of an Ultisol under rice cropping in southeast China. Geoderma, 118:167-179. crossref(new window)