Pathogen Detection in Dragonfruit With Transfer Learning and Fine-Tuned Keras Models

Pathogen Detection in Dragonfruit With Transfer Learning and Fine-Tuned Keras Models

K. P. Asha Rani, S. Gowrishankar
Copyright: © 2024 |Pages: 14
DOI: 10.4018/979-8-3693-2069-3.ch017
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Abstract

Dragonfruit, also known as pitaya, is a tropical fruit vulnerable to various diseases that can significantly impact its growth and yield. Timely and accurate disease detection and classification are crucial for effective management of dragonfruit cultivation. Transfer learning, a powerful machine learning technique, has shown promise in plant disease classification by leveraging pre-trained models. Keras, a popular deep learning library, offers pre-trained models suitable for image classification tasks. This research aims to develop a robust classification model for accurately identifying and distinguishing diseases by considering self-created dragonfruit plant dataset. By fine-tuning pre-trained Keras models, specifically adapted for dragonfruit disease classification, transfer learning is employed to achieve high accuracy in disease identification. The study contributes to agricultural disease detection by empowering farmers and researchers with a valuable tool for disease monitoring and management.
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1. Introduction

Dragon fruit, also known as pitaya, is a tropical fruit that comes from several species of cactus plants, primarily Hylocereus and Selenicereus. It is characterized by its vibrant, colorful skin and unique, succulent flesh with tiny edible seeds. Dragon fruit is native to Central America but is now cultivated in many countries around the world (Rijal et al., 2019).

1.1 Importance of Dragon Fruit

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    Nutritional Value: Dragon fruit is rich in essential nutrients, including vitamin C, vitamin E, antioxidants, fiber, and several minerals. It is low in calories and contains beneficial plant compounds like flavonoids and betacyanins.

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    Antioxidant Properties: The high levels of antioxidants in dragon fruit help protect the body against free radicals, which can damage cells and contribute to chronic diseases.

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    Digestive Health: The fiber content in dragon fruit aids in digestion and helps maintain a healthy digestive system.

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    Hydration: Dragon fruit has high water content, making it a hydrating fruit choice.

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    Immune Support: The vitamin C in dragon fruit can boost the immune system and promote overall health.

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    Potential Anti-Cancer Effects: Some studies suggest that the antioxidants in dragon fruit may have anti-cancer properties, although more research is needed to confirm this (Nguyen et al., 2020) (Ritarwan et al., 2018).

1.2 Nutritional Values (per 100 grams)

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    Calories: 60

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    Carbohydrates: 13 grams

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    Fiber: 1 gram

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    Protein: 1 gram

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    Fat: 0 grams

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    Vitamin C: 20% of the Daily Value

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    Iron: 4% of the Daily Value

1.3 Diseases Caused for Dragon Fruit Plants

Dragon fruit plants can be susceptible to various diseases, including:

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    Anthracnose: This fungal disease causes dark spots on the stems and fruits, leading to rotting.

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    Stem Canker: It is a bacterial disease that causes lesions on the stems, leading to plant wilting and reduced yield.

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    Root Rot: Caused by various fungal pathogens, root rot can cause root decay and plant death.

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    Powdery Mildew: A fungal disease that results in a white powdery coating on the leaves, affecting plant growth.

1.4 Transfer Learning

Transfer learning is a machine learning technique where a model trained on one task is repurposed or adapted to another related task. Rather than training a model from scratch, transfer learning leverages the knowledge learned from solving one problem and applies it to a different but related problem (ÖZDEN et al., 2023).

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