Disease and Pest Management in Temperate Nut Crops

Abstract

Disease and pest management in temperate nut crops is a major challenge worldwide. Depending on cultural practices, treatment efficacy, and environmental conditions, the estimated damage caused by diseases and pests in nut crops ranges from 20% to 50%. Among nut crops, walnuts and hazelnuts are widely cultivated globally, and their most serious diseases and insect pests include bacterial blight, powdery mildew, Armillaria root rot, apple mosaic virus, moths, beetles, flies, bugs, aphids, and mites. Accurate identification of plant pests and diseases is a critical first step in effective pest and disease control and management. Farmers often rely solely on chemical spraying to control these pests, which can lead to pest resistance. This chapter outlines different Integrated Pest Management (IPM) practices that successfully maintain pest and disease levels below economic thresholds. The IPM approach offers several advantages over conventional management methods, as it is more economical and environmentally friendly, contributing to a sustainable agroecosystem. This book chapter provides a brief introduction to the most common diseases and pests affecting major nut crops and serves 288as a valuable resource for students and agricultural specialists, aiding in the identification and management of pests and diseases while evaluating their economic impact.