Managing runoff of herbicides under rainfall and furrow irrigation with wheel traffic and banded spraying

Occurrence of glyphosate and AMPA in an agricultural watershed from the southeastern region of Argentina

“…In the case of S2 the Kp was 26, denoting a high adsorption on sediments. Silburn et al (2013) reported similar results for pyrithiobac sodium and metalochlor after 34 days of application. Ibáñez et al (2005) also found glyphosate concentration of 0.48 ng/mL and 0.18 ng/mL for AMPA in streamwater from a Valencian Mediterranean region.…”

Dynamics of herbicide transport and partitioning under event flow conditions in the lower Burdekin region, Australia

“…While compounds such as atrazine are likely to breakdown more rapidly in alkaline marine conditions (see Smith et al, in press), this selective habitat partitioning may also be due in large part to the chemical characteristics of diuron relative to other herbicides. Diuron's behaviour aligns with both theoretical sorption-partitioning predictions (see Wauchope et al, 2002) as well as field data (see Silburn et al, 2011) on pesticide movement from paddocks. Diuron has one of the lower solubilities, longest half-lives and highest propensities for particulate sorption (K OC ) of all the herbicides commonly detected in GBR waterways and marine-estuarine environments ( Table 1).…”

Spot Spraying Reduces Herbicide Concentrations in Runoff

“…Improved practices that have been identified from research as “best management” for minimizing off-site herbicide transport in runoff from cane farms include a range of soil, crop, water, and herbicide management practices . The water quality benefits of many of these practices including GCTB, controlled traffic farming, − and timing herbicide application to avoid forecast heavy rain are supported by studies in the GBR catchments and elsewhere. To add to this suite of beneficial practices, practices that reduce the total volume of herbicide applied to paddocks are also advocated and were the focus of this research.…”