Influence of cultivation methods on suspended solids and phosphorus concentrations in surface runoff on clayey sloped fields in boreal climate

Surface water ponding on clayey soils managed by conventional and conservation tillage in boreal conditions

“…Conservation autumn tillage practices, including shallow stubble tillage and zero tillage, and perennial grass cover are known to be advantageous regarding erosion control in clayey soils also in boreal areas as compared to conventional autumn ploughing (Skøien 1988, Turtola and Paajanen 1995, Ulén 1997, Koskiaho et al 2002, Puustinen et al 2005. However, contrary to the results above, Turtola et al (2007) found that the erosion from shallow autumn stubble cultivated clayey soil (slope 2%) was equally high to that from ploughed soil.…”

No-till in northern, western and south-western Europe: A review of problems and opportunities for crop production and the environment

“…No-till can greatly reduce losses of PP but a stratified surface layer rich in P can develop in no-till soils from which an appreciably higher loss of DRP can occur than on ploughed soils. Puustinen et al (2005) found that the loss of PP on no-till soil was 30% of that from ploughed soil (1.13 instead of 3.71 kg ha -1 ) but DRP increased by 348% under no-till (2.02 instead of 0.58 kg ha -1 ). Such very considerable increased losses of DRP in runoff after no-till compared to ploughing have also been attributed to the release of DRP from dead weeds following glyphosate application (Ulén et al, 2010) and to P leaching from fertilizers retained near the surface .…”

Tools for Assessing Phosphorus Loss from Nordic Agriculture

“…Appropriate data exist from the experimental fields of Aurajoki (11 y, Puustinen et al, 2004), Kotkanoja (20 y, Tu holampi (10 y), and Lintula (10 y). According to the available cultivation and tillage data from 1980-2000, results of Hovi (a "small drainage basin") from these 20 years were also examined.…”