New trial of the group "Weed Biology and Agroecology (BAMh)": emergence models for summer weeds

Abstract

The Weed Biology and Agroecology group (BAMh) of the Spanish Society of Weed  Science (SEMh) is currently composed of 15 people working in 4 universities; Universitat de Lleida (UdL), Universitat Politècnica de València (UPV), Universidad de Sevilla (US) and Universitat Politècnica de Catalunya (UPC) and in 5 research centers in Spain and Portugal: Centro de Investigación y Tecnología Agraria de Aragón (CITA), CN Instituto Nacional de Investigaciones y Tecnología Agraria y Alimentaria (INIA-CSIC), Centro de Investigaciones Científicas y Tecnológicas de Extremadura (CICYTEX), Instituto Andaluz de Investigación y Formación Agraria, Pesquera, Alimentaria y de la Producción Ecológica (IFAPA), Instituto Navarro de Tecnologías e Infraestructuras Agroalimentaria (INTIA) and Instituto Nacional de Investigação Agrária e Veterinária (INIAV). This group has initiated a new trial (2023-2025) to validate for the Iberian Peninsula the emergence models developed in Italy for the weeds Chenopodium album L., Sorghum halepense L., Abutilon theophrasti Medik, Digitaria sanguinalis (L.) Scop. and Amaranthus retroflexus L. The seeds collected by the groups at their locations will be sown in mid-autumn in experimental plots in Aragón, Barcelona, Sevilla, Córdoba, Lleida, Madrid, Valencia, Navarra and Oeiras (Portugal). The emergence will be evaluated and the base, optimum and ceiling temperatures and the base water potential will be obtained under controlled conditions for the germination of those species that do not fit the model. The recalibration and optimization of these models for their application in the Iberian Peninsula will contribute to achieve an integrated management of weeds in summer crops.