Biochar effects on soil aggregate properties under no-till maize

Ataallah Khademalrasoul, Muhammad Naveed, Goswin Heckrath, K.G.I.D. Kumari, Lis Wollesen de Jonge, Lars Elsgaard, Hans-Jorg Vogel, Bo V. Iversen

Research output: Contribution to journalArticle

Abstract

Soil aggregates are useful indicators of soil structure and stability, and the impact on physical and mechanical aggregate properties is critical for the sustainable use of organic amendments in agricultural soil. In this work, we evaluated the short-term soil quality effects of applying biochar (0-10 kg m-2), in combination with swine manure (2.1 and 4.2 kg m-2), to a no-till maize (Zea mays L.) cropping system on a sandy loam soil in Denmark. Topsoil (0-20 cm) aggregates were analyzed for clay dispersibility, aggregate stability, tensile strength (TS), and specific rupture energy (SRE) using end-over-end shaking, a Yoder-type wet-sieving method, and an unconfined compression test in soil samples collected 7 and 19 months after final biochar application. The highest rates of biochar and swine manure application resulted in the highest aggregate stability and lowest clay dispersibility. Applying both amendments systematically increased TS and SRE for large aggregates (4-8 and 8-16 mm) but not for small aggregates (1-2 and 2-4 mm). Increased biochar application also decreased the friability index of soil aggregates. Based on X-ray visualization, it was found that aggregates containing larger amounts of biochar particles had higher TS and SRE probably because of bonding effects. Based on the improved soil aggregate properties, we suggest that biochar can be effective for increasing and sustaining overall soil quality, for example, related to minimizing the soil erosion potential. (C) 2014Wolters Kluwer Health | Lippincott Williams & Wilkins
Original languageEnglish
Pages (from-to)273-283
Number of pages11
JournalSoil Science
Volume179
Issue number6
DOIs
Publication statusPublished - Jun 2014
Externally publishedYes

Keywords

  • Biochar
  • aggregate stability
  • clay dispersibility
  • tensile strength
  • X-ray CT scanning

Cite this

Khademalrasoul, A., Naveed, M., Heckrath, G., Kumari, K. G. I. D., de Jonge, L. W., Elsgaard, L., ... Iversen, B. V. (2014). Biochar effects on soil aggregate properties under no-till maize. Soil Science, 179(6), 273-283. https://doi.org/10.1097/SS.0000000000000069
Khademalrasoul, Ataallah ; Naveed, Muhammad ; Heckrath, Goswin ; Kumari, K.G.I.D. ; de Jonge, Lis Wollesen ; Elsgaard, Lars ; Vogel, Hans-Jorg ; Iversen, Bo V. / Biochar effects on soil aggregate properties under no-till maize. In: Soil Science. 2014 ; Vol. 179, No. 6. pp. 273-283.
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Khademalrasoul, A, Naveed, M, Heckrath, G, Kumari, KGID, de Jonge, LW, Elsgaard, L, Vogel, H-J & Iversen, BV 2014, 'Biochar effects on soil aggregate properties under no-till maize' Soil Science, vol. 179, no. 6, pp. 273-283. https://doi.org/10.1097/SS.0000000000000069

Biochar effects on soil aggregate properties under no-till maize. / Khademalrasoul, Ataallah; Naveed, Muhammad; Heckrath, Goswin; Kumari, K.G.I.D.; de Jonge, Lis Wollesen; Elsgaard, Lars; Vogel, Hans-Jorg; Iversen, Bo V.

In: Soil Science, Vol. 179, No. 6, 06.2014, p. 273-283.

Research output: Contribution to journalArticle

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T1 - Biochar effects on soil aggregate properties under no-till maize

AU - Khademalrasoul, Ataallah

AU - Naveed, Muhammad

AU - Heckrath, Goswin

AU - Kumari, K.G.I.D.

AU - de Jonge, Lis Wollesen

AU - Elsgaard, Lars

AU - Vogel, Hans-Jorg

AU - Iversen, Bo V.

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KW - aggregate stability

KW - clay dispersibility

KW - tensile strength

KW - X-ray CT scanning

U2 - 10.1097/SS.0000000000000069

DO - 10.1097/SS.0000000000000069

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Khademalrasoul A, Naveed M, Heckrath G, Kumari KGID, de Jonge LW, Elsgaard L et al. Biochar effects on soil aggregate properties under no-till maize. Soil Science. 2014 Jun;179(6):273-283. https://doi.org/10.1097/SS.0000000000000069