Things that promote resistance along with examples of herbicides having same mode of action and weeds that are resistant to them.
Complete pdf of 2018 Chemical Weed Management Guide -- 223 pages. Download the complete pdf for free.
Strawberries, Blackberries, Blueberries, Citrus, Grapes (Muscadine and Bunch), Mayhaws, Peaches and Pecans Chemical Weed Control
This document describes the diseases that occur most frequently on pecan trees in Louisiana.
Disease control of brown spot, bunch disease, downy spot, powdery mildew, leaf scorch, rosette, scab and vein spot.
The application of pesticides is the most commonly used method for controlling arthropod pests and diseases on pecan trees. Because of the size of the pecan tree, pesticides are primarily applied with large spray machines known as air-assisted sprayers. (PDF Format Only)
Pecan spittlebugs are found throughout the pecan-producing regions of Louisiana and can be a serious pest. The severity of infestations varies from year to year and from orchard to orchard. Life cycle, type of injury and control information are included. (PDF Format Only)
Two species of yellow aphids are found on pecans in Louisiana and in all pecan-producing states. Descripton, life cycle, damage and control information is included. (PDF Format Only)
Pecan phylloxera are found throughout the native pecan-producing regions of the United States. Beginning in mid-April, galls (knots) begin to appear on the leaf veins, leaf rachises, catkins, current season's shoot growth and nuts of the pecan. Damage, description, life cycle and control information is included. (PDF Format Only)
Commercial and Home Uses. Control of obscure scale, pecan phylloxera, pecan nut casebearer, pecan spittlebug, hickory shuckworm, pecan leaf scorch mite, yellow aphid, black pecan aphid and pecan weevil.
This article provides instructions on when and how to collect leaf samples for pecan nutritional analysis.
The black pecan aphid is found throughout Louisiana and most pecan-producing states. Description, life cycle, damage and control information included. (PDF Format Only)
This page provides information on pecan pollen shed and pistillate flower receptivity dates for numerous pecan cultivars. This information is useful for determining which pecan cultivars will pollinate other cultivars.
This document provides a step-by-step procedure for hot water treatment of pecan scion wood to eliminate the bacterial leaf scorch pathogen.
The information contained in this article was presented at the March 31, 2006, Pecan Clinic near Cloutierville, La. The objectives for pruning damaged trees are listed and several types of pruning cuts are defined.
redirect to the Pecan Research Station front page.
This article answers the question, "Why do my pecan trees have a large crop followed by a small one?" and provides answers to several questions concerning mechanical thinning.
A general overview of pecan orchard floor management is given and herbicides labeled for use in pecan orchards are listed by site activity.
An illustrated fact sheet describing the appearance and life cycle of the pecan weevil. Information on damage and control are also included.
An illustrated fact sheet describing the appearance and life cycle of the nut curculio. A description of the damage and information on sampling are also covered.
Current insecticide recommendations for commercial pecan orchards in Louisiana. This illustrated guide provides information on insecticides, rates of application and timing of applications. For each insect listed, a photo of the insect, damage caused by the insect or both are provided.
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.