RT Journal Article
T1 Economical Evaluation of Reduced Herbicide Doses Application Rates to Control Phalaris brachystachys (Short-Spiked Canary Grass) in a Biennial Wheat–Sunflower Rotation in Mediterranean Dryland: A Modelling Approach
A1 Zambrano Navea, Casto
A1 Bastida Milián, Fernando
A1 Aguilera Ureña, María Jesús
A1 González Andújar, José Luis
AB Phalaris brachystachys (short-spiked canary grass) is considered to be among the most troublesome cereal weeds in Mediterranean areas. A bioeconomic model, based on population dynamics, competition and economic sub-models, was developed to simulate the long-term economic consequence of using herbicide-based strategies: no herbicide application, full herbicide dose (standard rate) and two reduced dose rates (75 and 50% of the standard rate) to control P. brachystachys in a biennial wheat–sunflower rotation. Simulation results indicated that only herbicide application at a full dose (90% control) and 3/4 dose (80% control) produced positive economic results, with the full dose being the best strategy (EUR 98.65 ha−1 year−1). A sensitivity analysis showed that the economic outcome, in terms of annualized net return, was strongly influenced by changes in yield, price, and fixed costs. In addition, the annualized net return was more sensitive to parameter changes at reduced herbicide doses than at full rate. In the wheat–sunflower rotation system, the application of the full dose of herbicide was the most economical and stable strategy in the long-term. Reduced doses are not a recommended option from an economic point of view. Bioeconomic models provide practical insight into different management approaches for effective weed control.
PB MDPI
SN 2223-7747 (electrónico)
YR 2024
FD 2024-01
LK https://hdl.handle.net/10272/23713
UL https://hdl.handle.net/10272/23713
LA eng
NO Zambrano-Navea, C., Bastida, F., Aguilera, M. J., & Gonzalez-Andujar, J. L. (2024). Economical Evaluation of Reduced Herbicide Doses Application Rates to Control Phalaris brachystachys (Short-Spiked Canary Grass) in a Biennial Wheat–Sunflower Rotation in Mediterranean Dryland: A Modelling Approach. In Plants (Vol. 13, Issue 2, p. 212). MDPI AG. https://doi.org/10.3390/plants13020212
NO This work has been partially funded by FEDER (European Regional Development Funds) and the Spanish Ministry of Economy and Competitiveness funds (Projects AGL2015-63130-R).
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026