Soil and Water Research, 2014 (vol. 9), issue 2
Relating extent of colluvial soils to topographic derivatives and soil variables in a Luvisol sub-catchment, Central Bohemia, Czech RepublicOriginal Paper
Tereza Zádorová, Daniel Žížala, Vít Penížek, Šárka Čejková
Soil & Water Res., 2014, 9(2):47-57 | DOI: 10.17221/57/2013-SWR 
Colluvial soils, resulting from accelerated soil erosion, represent a significant part of the soil cover pattern in agricultural landscapes. Their specific terrain position makes it possible to map them using geostatistics and digital terrain modelling. A study of the relationship between colluvial soil extent and terrain and soil variables was performed at a morphologically diverse study site in a Luvisol soil region in Central Bohemia. Assessment of the specificity of the colluviation process with regard to profile characteristics of Luvisols was another goal of the study. A detailed field survey, statistical analyses, and detailed digital elevation...
Retention characteristics of acetochlor in soils collected from different depths in relation to soil properties (Žitný ostrov area, SW Slovakia)Original Paper
Veronika TATARKOVÁ, Edgar HILLER, Radoslav HALKO
Soil & Water Res., 2014, 9(2):58-65 | DOI: 10.17221/98/2013-SWR
Determination of the sorption-desorption of herbicides within soil profile is one of the first steps in predicting their leaching potential. Batch experiments were performed to evaluate the influence of soil properties on acetochlor retention. Soil samples were taken from horizons A, B, and C of three soil types representative of the Žitný ostrov area. The sorption and desorption isotherms were fitted to the Freundlich equation. The Freundlich sorption coefficient (Kfs) values ranged from 0.71 to 6.58 mg(1-1/n).l(1/n)/kg and were correlated positively with soil organic carbon, humic and fulvic...
Characterization of extractable metals from the aquifers with arsenic contamination in the Tsengwen Creek, TaiwanOriginal Paper
Hsueh-Yu LU
Soil & Water Res., 2014, 9(2):66-76 | DOI: 10.17221/42/2013-SWR
Arsenic contamination in groundwater is a common groundwater problem worldwide. To manage groundwater resources effectively, it is crucial to determine the arsenic source. Taiwan's Tsengwen Creek watershed is one of the known areas for groundwater arsenic contamination. Water-rock interactions are evaluated on a regional scale. A conceptual hydrogeological framework is first established based on groundwater hydrochemistry. The local aquifer system can be categorized into high-arsenic deep aquifer and low-arsenic shallow aquifer. The average geochemistry of sediments indicates that arsenic and heavy metals are not significantly enriched in the deeper...
Evaluation of the variability in runoff and sediment loss in successional fallow vegetation of Southern NigeriaOriginal Paper
Anthony I. IWARA
Soil & Water Res., 2014, 9(2):77-82 | DOI: 10.17221/27/2013-SWR
The effects of three different ages of natural fallow vegetation on runoff and sediment loss were investigated in a part of the rainforest zone of Nigeria. Measurements of runoff amount and sediment loss were made for the months of March to November in 2012 rainy season using runoff plots of 40 m2. The average runoff amount for the 5-year-old, 3-year-old, and farmland plots were 0.47, 0.26, and 0.41 mm respectively. The average sediment loss on the 5-year-old, 3-year-old, and farmland plots were 209.24, 50.54, and 124.68 kg/ha, respectively. The lowest losses for both runoff and sediment were recorded on the 3-year-old plot, while the 5-year-old...
Generalized calibration of the Hargreaves equation for evapotranspiration under different climate conditionsOriginal Paper
Jignesh PATEL, Himanshu PATEL, Chetan BHATT
Soil & Water Res., 2014, 9(2):83-89 | DOI: 10.17221/28/2013-SWR
Accurate estimation of evapotranspiration (ETo) is a key factor in weather-based irrigation scheduling methods. To estimate ETo using the Hargreaves equation, just the data on the minimum and maximum temperature and solar radiation are required. However, this procedure cannot offer consistent accuracy for different climate conditions. To attain the accuracy, calibration of the equation constants (CHand EH) for different climate conditions have successfully been attempted by many researchers. Because these calibration procedures are lengthy and location-specific, there is a need of a generalized calibration method...
Influence of drainage system maintenance on storm runoff from a reforested, waterlogged mountain catchmentOriginal Paper
Vladimír Černohous, Vladimír Švihla, František Šach, Dušan Kacálek
Soil & Water Res., 2014, 9(2):90-96 | DOI: 10.17221/54/2013-SWR
The maintenance of a drainage system in a waterlogged mountain catchment impacted by earlier harvesting operations was assessed on the basis of a hydrological analysis (hydrological balance, three linear reservoirs method). To restore pre-harvest hydrological conditions, the water-saturated localities were experimentally drained both by restoration of existing ditches and digging of additional open ditches. The rainwater retention of the soil was illustrated by two comparable storm flow events occurring before and after the draining treatment. Pedohydrological analysis revealed the important involvement of static retention in capillary pores in the...