Brant V., Zábranský P., Škeříková M., Pivec J., Kroulík M., Procházka L. (2017): Effect of row width on splash erosion and throughfall in silage maize crops. Soil & Water Res., 12: 39−50.Line width is one of the major factors affecting arable soil erosion. The aim of the study was to assess the effects of different row spacing on splash erosion and throughfall in maize crops. Field measurements of the throughfall (P th , mm) and splash erosion (MSR, g/m 2 ) were carried out in silage maize crops (

Physiological parameters are sensitive and provide information on the toxicity of herbicides in plants. The impact of herbicide application on plant transpiration was evaluated by the sap flow method during 2009–2011. The aim of this work was to verify the sap flow method for determining the effect of herbicides on the basis of continuous measurements of the transpiration flow. Helianthus annuus was used as a model plant species. The two different herbicides tested in this study differed by the effect of active ingredients bromoxynil and clopyralid. The water flow was measured using sap flow meter T4.2. The impact of herbicides was assessed by comparing measured transpiration rate (Q) after herbicide application with an extrapolation of transpiration rate of plants before herbicide treatment (Q_calc). After treatment with bromoxynil the Q values decreased significantly compared to Q_calc. For plants treated by clopyralid, the decline of actual transpiration (Q) compared with the modelled one (Q_calc) was less substantial and the plants continued to transpire after the treatment. The effect of herbicides was also verified using infrared gas analyser and chlorophyll fluorescence meter.

The aim of this study, based on measurements of actual evapotranspiration of vegetation, was to determine the values of the crop coefficient (K c ) for selected crops and the effect of growth on the dissipation of radiation energy. The actual evapotranspiration (ET a , mm day

Evapotranspiration and transpiration measurements represent a tool for the assessment of crop water demand. The aim of this study was to compare sorghum and maize with respect to its potential for forage production in areas with insufficient precipitation in Central Europe. The values of the actual evapotranspiration (ET_a, Bowen ratio balance method), transpiration (sap flow method), leaf area index (LAI) and biomass production of sorghum and maize were measured continuously in years 2010–2012. Sorghum stand provided higher ET_a in comparison with maize in dry year 2012. Maize produced consistently more above-ground biomass yield and lower LAI over all evaluated years than sorghum. The sorghum provided similar or higher water use efficiency (WUE) than maize during the period of intensive prolongation growth, however, the higher WUE did not result in higher biomass production.