Early warning system for sustainable preventive management of potato late blight (Phytophthora infestans) in Latin America

The use of early warnings as a decision support tool in an integrated program helps farmers perform chemical control in a timely and efficient manner, reducing environmental impact and people's risk.

Context of the story

Potato, native to the Americas, is a major crop in Latin America, being the main food in small farming. Late blight, caused by Phytophthora infestans, is considered a re-emerging disease in this crop, due to pathogen variability and climate instability that favors its presence and dispersion, with a high incidence and severity. Farmers, therefore, use pesticides excessively and inappropriately, increasing the environmental impact and risk to the health of users. Implementing an early warning system as decision support tools in the small family farming of participating countries will reduce the losses caused by this disease, in a sustainable and safe way for the user.

Implementation of the early warning system in participating countries

The implemented initiative

This proposal proposes the formation of a platform of specialists in potato late bligh to develop and implement an early warning system and a seasonal alert system, as tools to support productive systems of family farming in participating countries, according to available technology and able to reduce the losses caused by this disease. Thus this information, together with the characterization of the pathogen-host relationship and training of users in integrated management and good agricultural practices according to productive objective, will promote the sustainable intensification of potato production. In this initiative, funded by FONTAGRO, INIA Chile participates as executor with INTA Argentina, INIAP Ecuador and IDIAP Panama as co-executors.

Early warning systems, integrated management and good agricultural practice, improve the efficiency of agrochemical use and increase potato crop productivity and profitability in small farming

The technological solution

The Early Warning System uses weather data alongside epidemiological information of the disease to estimate optimal control times. Two systems will be implemented, one based on real-time connected weather station network information (tizon.inia.cl, Phytoalert) and a manual system that uses local environmental condition observation (DSS-HH). Both systems enable farmers to make management decisions based on the information delivered, improving the efficiency of agrochemical use, increasing crop productivity and profitability. The beneficiaries will be small farmers in the platform member countries. In Chile, we will work with 35 female farmers producing potatoes landraces in Chiloe Island; Argentina will work with 6 farming families in Belgrano, Northern Argentina; in Ecuador the direct beneficiaries will be 120 farmers from the provinces of Cotopaxi, Pichincha and Chimborazo; while in Panama, 20 producers from the Cerro Punta, Chiriquí sector will be worked on.

"It is a great opportunity to know the work that is done in other countries and how they face the problem of late blight. I learned a lot today"
Technical adviser to native potato farmers on the Chiloé Island, Chile, Sra. Marcia Moncada. First FONTAGRO Technical Workshop with the members of the platform, Chiloé, Chile, 2018.

Participating countries

Type of project

Results

It has been possible to validate the early warning systems for late blight in 4 countries: Chile, Argentina, Ecuador and Panama, for which more than 29 demonstration units have been established, obtaining an efficiency of more than 50% in the reduction of applications, environmental and economic impact, relative to a schedule calendar of applications. 528 isolates of P. infestans have been collected using FTA cards, from Chile, Argentina, Panama, Ecuador, Brasil, Uruguay, Peru and Costa Rica, with a wide range of monitoring for a Latin American genotypic map. Potato chain agents have been trained in 55 workshops on best agricultural practices, integrated management and use of early warnings, emphasizing the correct use of agrochemicals and timely applications. In addition, there have been 8 field days and seminars, one international symposio and also, two workshops for co-executors and associates, with the participation of 2761 total people (42 % women).

Relevant data

Early warning system to control Potato Late Blight

Number of women in the technical team
-%
Number of women in the technical team
Total beneficiaries
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Total beneficiaries
Trained people
-
Trained people
Women
-%
Women
Number of workshops, seminars and field days
-
Number of workshops, seminars and field days
Number of validation units
-
Number of validation units
Monitoring and characterization of the causal agent
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Monitoring and characterization of the causal agent
Organized international symposiums
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Organized international symposiums

The use of a warning system allows to reduce applications, costs and EIQ by more than 53%, 60% and 56% in average, respectively, in relation to traditional management.

Number of applications, costs and environmental impact quotient (EIQ) in productive systems managed with early warning strategies

Number of applications, costs and environmental impact quotient (EIQ) in productive systems managed with early warning strategies

Participating Organizations

Consorcio Papa - Chile
DMC  - Chile
 Instituto de Innovación Agropecuaria de Panamá (IDIAP) - Panamá
Instituto de Investigaciones Agropecuarias (INIA) - Chile
Instituto Nacional de Investigaciones Agropecuarias (INIAP) - Ecuador
Instituto Nacional de Tecnología Agropecuaria (INTA) - Argentina
Productores y Comercializadores de Hortalizas Caballero S.A. (Productores y Comercializadores de Hortalizas Caballero S.A.) - Panamá
Instituto Interamericano de Cooperación para la Agricultura (IICA) - Ecuador
Municipalidad de Puqueldón, Provincia de Chiloé, Los Lagos (MP) - Chile
 Instituto de Innovación Agropecuaria de Panamá (IDIAP) - Panamá
Instituto de Investigaciones Agropecuarias (INIA) - Chile
Instituto Nacional de Investigaciones Agropecuarias (INIAP) - Ecuador
Instituto Nacional de Tecnología Agropecuaria (INTA) - Argentina

Main donors

FONTAGRO
FONTAGRO
© FONTAGRO
E-mail: fontagro@fontagro.org