Extraordinary Call
Other agencies:
USD 420.000
Counterpart Amount:
USD 729.134
Execution time
36 Months
Total Amount:
USD 1.149.134
Participating countries:
Uruguay Uruguay Colombia Colombia Venezuela Venezuela Brazil Brazil
Funding source:
Other agencies 37% Counterpart Amount 63%

Executive Summary

40% of the poorest population in Latin America (LA) has rice as the staple food in their daily intake; therefore, the safe and affordable supply to the population is of crucial importance for the governments of the region. In general terms, the estimate of production losses due to weeds is 7,000 billion dollars compared to 30,000 billion real production in LA in eight crops evaluated in 1988-90. In the case of rice cultivation, weedy rice is responsible for a good proportion of the volume of losses that occur.

Weedy rice is difficult to control with the tools available up to now because it involved a very tight management of the crop and a high dedication from the farmer. The advent of Clearfield® Technology will simplify weed control, especially in weedy rice. This technology will allow treating large areas at an affordable cost. On the other hand, the inappropriate use of this technology will lead to more serious weed problems due to the generation of resistance in weedy rice and other species, loss of herbicides due to lack of efficacy due to cross resistance. The project had the objective of training technicians and producers in the proper use of Clearfield® Technology.

The technological solution

Generate recommendations that contribute to the rational management of herbicides of the imidazolinone family and of the rice varieties resistant to them, allowing this weed control technology to be sustainable over time.


  • The dissipation curve of imazetapir, imazapir and imazapic was established in the ground and in the water.
  • The half-life of the herbicides in the soil and the lowest concentration in the soil that does not affect the growth of the rotating crop were determined.
  • The production of the hybrids produced manually between the different Clearfield® materials was studied.


Technicians and rice producers in the participating countries.

Sustainable Development Goals

Responsible consumption and production Partnerships for the goals

Main donors

Participating Organizations

  • Instituto Nacional de Investigación Agropecuaria (INIA) - Uruguay
  • International Center for Tropical Agriculture (CIAT) - Colombia
  • Universidad Central de Venezuela (UCV) - Venezuela
  • UFRGS - Brasil
  • UFSM - Brasil

Graphics and data

Financing by country (in USD)
FONTAGRO Amount Other agencies Counterpart Amount

Geolocated Map


Project leader Uruguay

Néstor Saldain


Aida Ortiz


Luis Avila


Aldo Merotto

With the support of
Fondo Coreano de Alianza para el Conocimiento en Tecnología e Innovación (KPK)