Home > Crops & Livestock > Crops > Pecans > Diseases > Pecan Bacterial Leaf Scorch [Image: Large native pecan tree in Natchitoches Parish, La.] For more than two decades there was uncertainty about the cause of a common disease among pecan trees referred to as leaf scorch. LSU AgCenter researchers were able to distinguish the cause of the disease, which has improved pecan production. Procedure for Hot Water Treatment of Pecan Scion Wood [Image: Pecan Bacterial Leaf Scorch on a Cape Fear tree.] This document provides a step-by-step procedure for hot water treatment of pecan scion wood to eliminate the bacterial leaf scorch pathogen. Pecan Scab Disease [Image: Pecan Scab Disease] Pecan scab disease is the most economically damaging disease of pecan production in the southeastern United States. The disease affects stem, leaf and nut growth, causing reduced yield. This publication includes information on the development, symptoms and control of the disease. Pecan Disease Synopsis [Image: Scab lesions on nuts] This document describes the diseases that occur most frequently on pecan trees in Louisiana.  more articles... Fungicide Application Recommendations for Pecan Disease Control [Image: Air-blast sprayer] The key components of the effective use of fungicides for pecan disease control are timing, coverage and concentration. The updated 2008 fungicide list is included. Plant Disease Management Guide [Image: disease guide] This guide for 2009 contains suggestions for management of the most important or more prevalent diseases of Louisiana plants. It includes information on fungicides, bactericides and nematicides, as well as safety precautions for using them.