Chemical Properties of Eroded Soil Material

Abstract

In a 5-year stationary investigation at an experimental station in central Croatia, total amounts of erosional drift were measured on a Stagnic Luvisol on which six tillage methods were used. The chemical properties of the tilled soil and the erosional drift were recorded for each trial method in the same plots. A generally higher soil reaction value, higher organic matter content and larger amounts of available phosphorus and potassium were found in the majority of erosional drifts compared to plot soil. On black fallow, erosional drifts contained significantly larger amounts of organic matter, available phosphorus and potassium than in other treatments. Higher contents of organic matter, phosphorus and potassium were recorded in erosional drifts from spring crop cultivation than in those from cultivation of winter wheat, oil-seed rape and a consociation of summer barley and soybean. Also, higher losses of organic matter, phosphorus and potassium by erosional drift were recorded for the up ⁄ down the slope tillage methods than for no-tillage and tillage across the slope. This suggests that no-tillage and tillage across the slope can be recommended for this region, since these tillage methods conserve the soil and substantially reduce water pollution by chemical agents applied in agricultural production.

Effects of soil erosion by water under different tillage treatments on distribution of soil chemical parameters

“…These results are consistent with the results of other researchers: Burwel et al (1977), McIsaac et al (1991), Fleige and Horn (2000), Kisic et al (2002), Ali et al (2006), Malam Issa et al (2006) and Warrington et al (2009) reported higher content of OM, plant available nutrients and other chemicals in soil sediments. Gaynor and Findlay (1995) concluded that conservation tillage reduces average soil loss compared to conventional tillage.…”

Enrichment of Organic Carbon in Sediment Transport by Interrill and Rill Erosion Processes

“…This indicates an increase in the ER OC with increasing soil loss rate, which is rather unusual and may be a result of the difference in tillage technique; however, the results of Cogle et al (2002) indicated that the kind of tillage technique affected the sediment yields but did not directly infl uence the ER OC . This was also observed by and Kisic et al (2002) for enrichment of clay and OC, respectively. On the other hand, Fullen (1991) and Fullen et al (1996) found lower OC, clay, and silt concentrations in eroded material compared with the loamy sand topsoil and attributed it to eluviation of clay and organic matter into the topsoil during runoff events.…”

Redistribution and loss of soil organic carbon by overland flow under various soil management practices on the Chinese Loess Plateau

“…Several researchers have indicated that conservation tillage practices reduce losses in soil and organic carbon (SOC) (Mostaghimi et al. , 1988; Kisic et al. , 2002; Puustinen et al.…”