ADOPTION OF WEED MANAGEMENT PRACTICES IN THE CROPPING AREA OF ARGENTINA

BETINA KRUK; JULIO SCURSONI; DUARTE VERA, ALEJANDRA; OREJA FERNANDO

La Habana

Congreso; XXIII Congreso Latinoamericano e Iberoamericano de Malezas-ALAM; 2017

ALAM (Asociación Latinoamericana de Malezas)

The objectives are: i) to assess the use of management practices and, ii) to detect the main weeds problems. In 2016, advisers and crop producers were surveyed through webmail to assess the adoption of management practices and to indicate the most problematic weeds. More than 53% use only chemical options. The most used are fallow treatment (86%), full herbicide rates (62%), proper herbicide timing (46%), multiple modes of action (41%), rotation of herbicide mode of action (32%). Among non-chemical practices the adoption is: crop rotation (45%), avoiding seed production during (31%) and after crop cycle ( 25%), narrow row (19%), competitive cultivars (18%) and less than 15% increasing crop densities and time of sowing. Conyza sp., Amaranthus sp., Sorghum halepense, Chloris sp., Eleusine indica, Echinocloa sp., Lolium sp. are the most important weeds. There is high dependence on chemical control. Extension policies are needed to emphasize integrated weed management.