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Towards an integrated weed management decision support system: A simulation model for weed-crop competition and control
Computers and Electronics in Agriculture ( IF 8.3 ) Pub Date : 2020-08-01 , DOI: 10.1016/j.compag.2020.105597
Franco A. Molinari , Aníbal M. Blanco , Mario R. Vigna , Guillermo R. Chantre

Abstract A mathematical simulation model for the multi-annual assessment of Integrated Weed Management strategies is presented. The model allows the simulation of the competitive interaction between annual weeds and crops. For weed development, the following processes are represented: (i) demographic dynamics on a daily basis considering the numeric composition of the different phenological states, (ii) intra and inter specific competition, (iii) seed production and (v) the effect of different control methods. For the crop development, the computed variables are: (i) Leaf Area Index, (ii) competitive effect over the weed, (iii) the expected yield as a function of weed competition. The model was developed in close collaboration with agricultural technicians and extensionists aiming to target a decision-making related audience. Results are provided for a wild oat (Avena fatua) – winter wheat (Triticum aestivum) / malting barley (Hordeum distichum) rotation system, typical of the Semiarid Pampean Region of Argentina. Multi-annual scenarios were generated to evaluate the effect of different management strategies against common herbicide-based practices in susceptible and resistant weed populations. Parts of the model were validated with independent experimental data. Finally, future improvements of the model and some guidelines towards the development of a long-term Decision Support System for weed management are provided.

中文翻译:

走向综合杂草管理决策支持系统:杂草作物竞争和控制的模拟模型

摘要 提出了一种用于综合杂草管理策略的多年评估的数学模拟模型。该模型允许模拟一年生杂草和作物之间的竞争相互作用。对于杂草发育,代表了以下过程:(i)考虑不同物候状态的数字组成的每日人口动态,(ii)内部和内部特定竞争,(iii)种子生产和(v)影响不同的控制方法。对于作物发育,计算变量为:(i) 叶面积指数,(ii) 对杂草的竞争效应,(iii) 作为杂草竞争函数的预期产量。该模型是与农业技术人员和推广人员密切合作开发的,旨在针对与决策相关的受众。提供了野燕麦 (Avena fatua) - 冬小麦 (Triticum aestivum) / 麦芽大麦 (Hordeum distichum) 轮作系统的结果,这是阿根廷半干旱潘潘地区的典型特征。生成了多年度情景,以评估不同管理策略对易感和抗性杂草种群中常见的基于除草剂的做法的影响。模型的一部分用独立的实验数据进行了验证。最后,提供了模型的未来改进和一些指导方针,以开发杂草管理的长期决策支持系统。生成了多年度情景,以评估不同管理策略对易感和抗性杂草种群中常见的基于除草剂的做法的影响。模型的一部分用独立的实验数据进行了验证。最后,提供了模型的未来改进和一些指导方针,以开发杂草管理的长期决策支持系统。生成了多年度情景,以评估不同管理策略对易感和抗性杂草种群中常见的基于除草剂的做法的影响。模型的一部分用独立的实验数据进行了验证。最后,提供了模型的未来改进和一些指导方针,以开发杂草管理的长期决策支持系统。
更新日期:2020-08-01
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