Studies on Potential Supply of Soil Organic Matter Using Phragmites australis in Reclaimed Land

Sun Kim; Yang-Yeol Oh; Jin-Hee Ryu; Su-Hwan Lee; Jeong-Tae Lee

doi:10.7745/KJSSF.2018.51.4.412

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Original research article

Studies on Potential Supply of Soil Organic Matter Using Phragmites australis in Reclaimed Land

30 November 2018. pp. 412-419

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Abstract

This research was conducted to investigate the possibility of reeds (Phragmites australis) application to increase the low organic matter content in the reclaimed soil. Reed is not only a perennial vegetation native growing in the reclaimed land and a plant promising for soil organic resources as it is regenerated every year and also has a lot of biomass. In order to establish the system to increase the soil organic matter content, the reed residue was put into the soil using a tractor in different periods. After the growth, the reed straw was put into the soil at mid-September, mid-November and mid-February of the following year during 1^st, 2^nd and 3^rd year. Soil chemistry showed no difference in pH and EC was slightly higher at constant three years of return plot. Carbon content increased at all treatments with increasing the number of application regardless of the treatment season. The amount of soil organic content increased with increasing the number of application comparing to 4.65 g kg^-1 in soil with the preserved reed. This also increased to 8.01 g kg^-1, 6.85 g kg^-1 and 7.02 g kg^-1 when the treatment was continued at mid-September, mid-November and mid-February for three years, respectively. This clearly showed that the application of reed straw to the soil was effective to improve soil fertility. Therefore, in order to increase the organic content of the reclaimed soil, it would be effective that the body part of reed is returned to the soil at mid-September of each year after the growth of reed is completed.

Soil chemical properties of top soil after the experiment.

Application	pH^†	EC	N	C	Av. P₂O₅	Exch. cations
Application	pH^†	EC	N	C	Av. P₂O₅	Ca	K	Mg	Na
	1:5	dS m^-1	mg kg^-1	mg kg^-1	mg kg^-1	----- cmol kg^-1 -----
No treat.	6.62^a	3.6^c	0.05^c	0.29^c	23.50	1.10	0.51	2.54	0.44^a
Ⅰ^‡	6.17^b	3.3^c	0.06	0.30^c	28.39	1.23	0.51	2.38	0.17^b
Ⅱ	6.30^ab	3.8^c	0.06	0.39^b	30.24	1.24	0.56	2.33	0.17^b
Ⅲ	6.16^b	4.8^a	0.07^a	0.46^a	40.56	1.29	0.59	2.41	0.18^b
Ⅳ	6.31^ab	3.4^c	0.06	0.37^b	29.01	1.15	0.51	2.27	0.29^ab
Ⅴ	6.20^b	3.9^c	0.06	0.38^b	30.32	1.42	0.54	2.36	0.14^b
Ⅵ	6.13^b	4.4^ab	0.06	0.40^a	37.95	1.28	0.58	2.41	0.14^b
Ⅶ	6.28^ab	3.6^c	0.06	0.32^c	29.73	1.29	0.55	2.37	0.21^b
Ⅷ	6.57^a	4.2^c	0.07^a	0.37^b	28.39	1.13	0.53	2.50	0.42^a
Ⅸ	6.26^ab	5.6^a	0.07^a	0.41^a	35.42	1.32	0.57	2.52	0.25^b
					ns	ns	ns	ns

^†Means with same lettered superscripts of column’s are not significantly different at 5% level by Duncan’s multiple range test.^‡reed residue soil input time. Ⅰ: Sept(2014), Ⅱ: Sept(2014 and 2015), Ⅲ: Sept((2014 to 2016), Ⅳ: Nov(2014),Ⅴ: Nov(2014 and 2015), Ⅵ: Nov(2014 to 2016), Ⅶ: Feb(2014), Ⅷ: Feb(2014 and 2015), Ⅸ: Feb(2014 to 2016).

Keywords

Reed

Soil organic matter

Reclaimed soil

References

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Information

Publisher :Korean Society of Soil Science and Fertilizer
Publisher(Ko) :한국토양비료학회
Journal Title :Korean Journal of Soil Science and Fertilizer
Journal Title(Ko) :한국토양비료학회 학회지
Volume : 51
No :4
Pages :412-419
Received Date : 2018-08-14
Revised Date : 2018-09-17
Accepted Date : 2018-09-19
DOI :https://doi.org/10.7745/KJSSF.2018.51.4.412

Korean Journal of Soil Science and Fertilizer ISSN:0367-6315(Print) 2288-2162(Online) 한국토양비료학회 학회지

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