Weeds: Kapi'una and Ka'aruru Gain Ground in Paraguay's Productive Areas

Krzyzaniak expressed in the Sunday agro-classic, where weed management and its impact on production were discussed, that this is a somewhat difficult year for agriculture in general, but herbicide is a necessary expense. "Historically, fungicides are the highest cost group, but year after year we have seen that herbicides are becoming more expensive, not necessarily the products, but the management becomes more costly," he highlighted. He recalled that kapi'i pororo (Digitaria insularis) was initially the main weed when it became resistant to glyphosate, then buba (Conyza) when it also became resistant to this chemical, then to ALS inhibitors, and finally to 2,4D and so on. According to the professional, 40% of Paraguay's productive areas are already infested with kapi'una (Bidens pilosa) and practically 30% already have ka'aruru (Amaranthus hybridus). "Today, if we talk about Paraguay, these are practically three weeds: Amaranthus, which is very difficult to manage, Bidens, which ...