Developing a CDY Model for Grapes and Experimentally Validating it with an Android App that Focuses on Agro-climatic and Disease Prevention Aspects

A. Eswari1, *, JG Manjunatha2, *
1 Department of PS&IT, AEC&RI, TNAU, Coimbatore-3, Tamil Nadu, India
2 Department of Chemistry FMKMC, College, Madikeri, Mangalore University Constituent College, Karnataka, 571201, India

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© 2023 Eswari and Manjunatha

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to these authors at the Department of PS&IT, AEC&RI, TNAU, Coimbatore-641003, Tamil Nadu, India and the Department of Chemistry FMKMC, College, Madikeri, Mangalore University Constituent College, Karnataka, 571201 India; E-mail:



Crop development and yield are both influenced by the weather. This study has developed and analytically resolved a general agro-climatic model for grapes.


In the field of mathematical biology, researchers, professors, and academics will find this model useful. To create the final version of the model for yield prediction, the CDY model and asymptotic analyses have been performed. Climate, disease, and grape production have been taken into consideration as dependent characteristics during the model construction process. The frequency of infection, the occurrence of disease, seasonality, and the elimination of grape output throughout each harvest cycle have been viewed as distinct qualities. Moreover, the model has been examined, and field-level data have been used to estimate the parameters collected between 2016-2021 from the nearby villages of GRS and Theni.


A description of this model’s stability analysis has also been provided. An association has been determined between the numerical validity and stability of the given analytical solution analyses. In addition, the developed Android mobile app for grapes has been validated using the proposed model under the climatic scenario.


It is advised to apply the created model to estimate grape yield based on the findings obtained. A useful technique for forecasting crop yield has thus been proposed in this study.

Keywords: Weather parameters, Yield, PDI, Modeling, Stability analysis, Disease prevention, Agro-climatic.