In recent years, root diseases in fruit trees have become increasingly common, often caused by improper fertilization or poor management practices. These issues have led to significant losses for farmers, making it essential to take timely and effective measures. According to the **Chinese Pesticide Network**, here's a comprehensive approach to address and treat root diseases in fruit trees. Root diseases are typically caused by three main factors: infection by pathogens, weakened tree vitality, and an unhealthy rhizosphere environment that allows harmful microorganisms to dominate. Therefore, treatment should target all these aspects rather than relying on a single method. First, it's crucial to address root infections. For affected trees, the infected roots should be exposed and treated with appropriate **fungicides**. It's recommended to use products specifically effective against soil-borne bacteria, such as "malignant" or broad-spectrum bactericides like copper-based or iodine-based compounds. However, caution is advised when using azole-type pesticides during root sterilization, as they can negatively affect the growth of already weakened trees. Once the roots are disinfected, it's important to restore the tree’s growth potential. Growth regulators like "Bai" can be used to promote root development. Chitin-based rooting agents with strong growth-stimulating effects are also beneficial. These can be combined for better results. For trees with weak root systems, foliar feeding with potassium nitrate (at a concentration of 0.3%) can help supplement nitrogen or potassium. Additionally, calcium fertilizer should be applied to support root health, as calcium plays a vital role in promoting root growth. The rhizosphere soil environment is often compromised in diseased trees, allowing harmful microbes to thrive. After treating the roots and applying growth regulators, it's advisable to introduce high-quality microbial agents or organic bio-fertilizers—such as EM (Effective Microorganisms) or products rich in spores. These beneficial microbes will outcompete harmful organisms, restoring a healthy soil ecosystem that supports root development. The **Chinese Pesticide Network** advises that by following these steps systematically, most affected trees can recover and resume normal growth. Taking a holistic and proactive approach is key to long-term success in managing fruit tree root diseases.

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