Fung-onil Multi Purpose Fungicide Concentrate is not specifically labeled to be used on pecan trees.
Ferti-lome Liquid Systemic Fungicide II is labeled for use on pecan trees to treat for diseases such as Scab, Powdery Mildew, Downy Spot, Zonate Leaf Spot, Fungal Leaf Scorch, Brown Spot. Please refer to the product label for more information.