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| Soil shear properties as influenced by straw content: An evaluation of field-collected and laboratory-remolded soils |
| FANG Hui-min*, ZHANG Qing-yi*, JI Chang-ying, GUO Jun |
| College of Engineering, Nanjing Agricultural University, Nanjing 210031, P.R.China |
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Abstract Following a rice or wheat harvest, a large amount of crop residue (straw) is retained in fields. The straw is often incorporated into the soil in order to increase the soil organic carbon storage and to reduce soil erosion. However, it has become apparent that the incorporated straw can significantly alter soil shear properties, which can dramatically affect energy inputs for tilling and other soil management practices. In this study, laboratory-remolded wheat straw-soil samples were compared with field-collected straw-soil samples; we found high correlations for the cohesion (R2=0.9084) and internal friction angle (R2=0.9548) properties of the samples. Shear tests on rice and wheat straw with different moisture content levels clearly demonstrated the relatively higher shear strength of wheat straw compared to rice straw. The cohesion of remolded rice and wheat straw-soil samples exhibited an increasing linear trend with an increase in densities, whereas the internal friction angle data for these samples exhibited a quadratic trend. Overlapping the cohesion curves revealed that the wheat straw-soil and rice straw-soil samples had the same cohesion at a straw density of 0.63%. Similar results were obtained when the internal fraction angle curves overlapped; the resultant point of intersection was observed at a straw density of 0.46%. As a whole, the remolded sample methodology was found suitable to simulate the shear properties of soils sampled directly from fields.
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Received: 12 October 2015
Accepted:
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| Fund: This study was financially supported by the National Natural Science Foundation of China (51275250). |
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Corresponding Authors:
JI Chang-ying, Tel: +86-25-58606571, E-mail: chyji@njau.edu.cn
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| About author: FANG Hui-min, Mobile: +86-18751972737, E-mail: hdldl@126.com; |
Cite this article:
FANG Hui-min, ZHANG Qing-yi, JI Chang-ying, GUO Jun.
2016.
Soil shear properties as influenced by straw content: An evaluation of field-collected and laboratory-remolded soils. Journal of Integrative Agriculture, 15(12): 2848-2854.
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| Bi Y, Gao C, Wang Y, Li B. 2009. Estimation of straw resources in China. Transactions of the Chinese Society of Agricultural Engineering, 25, 211–217. (in Chinese)Chandio F A, Ji C, Ahmed A T, Mari I A, Arslan C, Cuong D M. Fang H. 2013a. Effect of loading rate on mechanical characteristics of wheat and rice straw. Bulgarian Journal of Agricultural Science, 19, 1452–1458.Chandio F A, Ji C, Ahmed A T, Mari I A, Tian G, Cuong D M. 2013b. Comparison of mechanical properties of wheat and rice straw influenced by loading rates. African Journal of Biotechnology, 12, 1068–1077. Eltom A E F, Ding W, Ding Q, Ali A B, Adam B E. 2015. Effect of trash board on moldboard plough performance at low speed and under two straw conditions. Journal of Terramechanics, 59, 27–34. Foltz R A. 2012. A comparison of three erosion control mulches on decommissioned forest road corridors in the northern Rocky Mountains, United States. Journal of Soil and Water Conservation, 67, 536–544.Kushwaha R L, Vaishnav A S, Zoerb G C. 1983. Shear strength of wheat straw. Canadian Agricultural Engineering, 25, 163–166.Kushwaha R L, Vaishnav A S, Zoerb G C. 1986. Soil bin evaluation of disc coulters under no-till crop residue conditions. Transactions of the ASAE, 29, 40–44.Li Q, Chen X, Zhang F, Römheld V. 2002. Study on balance of phosphorus and potassium in winter wheat and summer maize rotation system. Plant Nutrition and Fertilizer Science, 8, 152–156. Mckyes E. 1985. Soil Cutting and Tillage. Elsevier, New York. pp. 11–37.O’Dogherty M J, Hubert J A, Dyson J, Marshall C J. 1995. A study of the physical and mechanical properties of wheat straw. Journal of Agricultural Engineering Research, 62, 133–142.Qu J, Li C, Liu B. Chen X, Li M, Yao Z. 2013. Effect of random inclusion of wheat straw fibers on shear strength characteristics of Shanghai cohesive soil. Geotechnical and Geological Engineering, 31, 511–518.Subrata K M, Basudeb B, Somenath M, Karmakar S. 2014. Soil-Blade interaction of a rotary tiller: Soil bin evaluation. International Journal of Sustainable Agricultural Research, 1, 58–69.Tagar A A, Ji C, Adamowski J, Malard J, Chen S, Ding Q, Abbasi N A. 2015. Finite element simulation of soil failure patterns under soil bin and field testing conditions. Soil & Tillage Research, 145, 157–170. Taghijarah H, Ahmadi H, Ghahderijani M, Tavakoli M. 2011. Shearing characteristics of sugar cane (Saccharum officinarum L.) stalks as a function of the rate of the applied force. Australian Journal of Crop Science, 5, 630–634.Tan D, Jin J, Huang S, Li S, He P. 2007. Effect of long-term application of K fertilizer and wheat straw to soil on crop yield and soil K under different planting systems. Agricultural Sciences in China, 6, 200–207.Tavakoli H, Mohtasebi S S, Jafari A. 2009a. Physical and mechanical properties of wheat straw as influenced by moisture content. International Agrophysics, 23, 175–181. Tavakoli H, Mohtasebi S S, Jafari A, Galedar M N. 2009b. Some engineering properties of barley straw. Applied Engineering Agriculture, 25, 627–633.Xie Z, Liu J, Yu M, Yao J, Pang Q. 2011. The study on moisture content and the water loss rate of straws during harvest time. Proceedings of the High Level Forum on the Development of Agricultural Mechanization Technology in the Hilly and Mountainous Region of China. Guizhou, China. pp. 132–138. (in Chinese)Yang J, Zhu Q, Wang Z, Lang Y, Liu L. 2000. Growth and development characteristics of the high-yielding population of rice and wheat and their regulation techniques. Review of China Agricultural Science and Technology, 2, 22–25. (in Chinese)Zhang F, Zhao M, Zhang B. 2004. Problem in the development of conservation tillage in North of China. Review of China Agricultural Science and Technology, 6, 36–39. (in Chinese)Zhang P, Wei T, Jia Z, Han Q, Ren X, Li Y. 2014. Effects of straw incorporation on soil organic matter and soil water-stable aggregates content in semiarid regions of Northwest China. PLOS ONE, 9, e92839. |
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