Qualitative modeling of fruit fly injuries on chayote in Réunion: Development and transfer to users

Abstract

Intensive chayote cultivation in Réunion almost disappeared in the 2000s due to significant yield losses from fruit fly attacks on this historically important crop (Dacus ciliatus, Zeugodacus cuurbitae and Dacus demmerezi). Since the late 2000s, the adoption of agroecological crop protection practices have led to the effective management of fruit fly populations, a significant reduction in pesticide use, an increase in chayote production and plantations, and the development of organic production. To assist in fruit fly management, a qualitative model which simulates fruit fly damage to chayote crops, known as IPSIM-chayote, was developed, providing satisfactory prediction results. It has a user-friendly interface and is now available free of charge online, in three languages (French, English and Spanish): https://pvbmt-apps.cirad.fr/apps/ipsim-chayote/?lang=en. The IPSIM-chayote modeling platform can be used by farmers as a diagnosis to simulate fruit fly damage to their crops and as a decision-making tool for their agricultural practices. The model can be used as a training resource in agroecological crop protection. Public authorities and local government can use it as a tool in planning and forecasting agricultural development. Finally, researchers can use it as a prediction tool and a resource for the exchange of information, allowing them to review scientific knowledge or identify new, relevant research areas suited to the context and challenges. IPSIM-chayote can be considered as a forum for exchange and can stimulate collaborative work between individuals. It is a flexible model, as it allows variables to be added. IPSIM-chayote is the first qualitative model developed for crop pests in a tropical environment. It could serve as a basis for the development of other similar models simulating crop pest incidence, thus contributing significantly to the development of agroecological crop protection.

Evaluating the insecticidal potential of ethanol extracts from Melia azedarach Linn. against Bactrocera cucurbitae - a pest inflicting damage on Momordica charantia Linn.

“…Level of damage to bitter melon fruit: The methodology is based on Deguine et al (2021) description with adjustments. Bitter melon fruit samples are selected from regions exhibiting signs of corrosion, such as cracks and dark spots.…”

Integrated pest management: good intentions, hard realities. A review

“…The main role of models for ACP is to handle the highest biological complexity of pesticide-free agroecosystems. Such models notably take into account the impact of cropping practices on the biological component of agroecosystems (e.g., Deguine et al 2021) and thus help design ACP-based cropping systems. Like for IPM, a secondary role of models for ACP is to help threshold-based decisionmaking for curative treatments as a last resort (but not especially for chemical use).…”

Multi-Attribute Assessment of Digital Maturity of SMEs

“…From the well-accepted analytical hierarchy process (AHP) [56], Promethee [60], and DEX. The later, for example, in agriculture the multiple-criteria decision model was used for the farm reorientation assessment [61] and crop protection [62]. In healthcare, the modeling using DEX methods was used for risk evaluation for developing ventilator-associated pneumonia [35].…”