Black spot is one of the most common and destructive diseases of roses, affecting every rose species and cultivar. This publication summarizes the disease symptoms, cause, environmental factors that favor its development, and control measures. (2 Pages)
More choices in Insects, Pests & Diseases
This online course covers the types of butterflies in Texas and how to attract them. Homeowners or garden enthusiasts will learn to invite new fluttery friends to the neighborhood.
Those who participate in this course will learn about herbicides, different modes of action, and different herbicide families. Pesticide applicators looking to receive 1 hour of credit for TDA pesticide general CEU can be earned with this course.
This course covers the application requirements for the use of approved dicamba and 2,4-D auxin formulations. This training qualifies for 1 CEU of laws and regulations, and successful certification permits the use of approved auxin formulation for the 2023 season only.
This course provides two CEUs to TDA agricultural applicators. Aerial applicators will receive the required credits for drift minimization and safety addressing human factors. All TDA applicators who complete the course will gain knowledge of spray drift minimization as well as pesticide safety.
This Picolinic Acid Chemistry Training covers the application requirements for the use of Invora™ herbicide for brush and weed management on rangeland sites in Arizona, New Mexico, Oklahoma, and Texas.
Although there are approximately 1,200 species of whiteflies worldwide, only a few species are of economic importance. Most whitefly species have a narrow range of host plants, but the ones that are considered pests may feed on and damage many vegetable and field crops, greenhouse and nursery crops, and house plants. (8 pages).