Weed Resistance
-
You can also RSVP online at https://ugeorgia.ca1.qualtrics.com/jfe/form/SV_0pTJ32zDJHkcId0
-
Ryegrass is the greatest weedy threat to wheat production in Georgia. Most ryegrass escapes are a result of 1) planting into fields already infested with emerged ryegrass and/or 2) making herbicide applications after the ryegrass is too large to control. However, herbicide-resistant ryegrass has become common with numerous populations being confirmed with resistance to Osprey,…
-
As you have heard many times before, Culpepper and I have been encouraging growers to consider the use of post-harvest (field corn) tactics (tillage, mowing, herbicides) to help manage the soil seedbank for weeds such as Palmer amaranth and tropical spiderwort. The pictures below are from one of my corn fields that I recently treated…
-
Cotton: The cotton crop in the area ranges from just emerging to first bloom. Aphid populations seem to be building in some areas in the county. Aphids will typically build moderate to high numbers and eventually crash due to a naturally occurring fungus, Neozygites fresenii. This fungal epizootic typically occurs in late June or early…
-
Current Situation: Happy Memorial Day! The majority of the cotton and peanut crop is planted. Corn is reaching critical moisture requirements as the crop is approaching tassel and pollination. Peanut growers are asking about cracking spray options. Cotton growers are starting to apply weed control and thrips pressure has been high in some area fields.…
Posted in: Beef Cattle, Corn, Cotton, Entolomogy, Hay & Forages, Irrigation, Peanuts, Weed Managment, Weed Resistance -
Hello, Information about Using Pesticide Wisely Trainings have just been released and is discussed below. The announcement about the UPW trainings can be obtained Below. AUXIN TRAINING REQUIREMENTS – GEORGIA 2021 Engenia, FeXapan, Tavium, XtendiMax All applicators driving the tractor/sprayer applying these herbicides must attend Using Pesticides Wisely during 2021 prior to using these products! …
-
Planting season has started in Colquitt County and I receive numerous calls from growers, consultants and retailers about ways to minimize herbicide injury. Pre emerge herbicides form the foundation for Palmer amaranth control programs in cotton. Lets discuss some points to consider in order to minimize injury. 1. Plant high vigor seed especially in harsh…
-
I have received this question a few times this week. Dr. Culpepper, UGA Cotton Weed Specialist, preaches that preemergence herbicides are the most effective tool to prevent resistance to post herbicides. Research conducted across GA during 2018/2019 showed that an effective preemergence herbicide mix reduced the number of pigweed needing to be controlled by the…
-
Morningglory control in corn has been topic of discussion this week. In Georgia, morningglories are particularly difficult to manage because residual herbicides do not provide full-season control and corn maturation in late June/July allows ample sunlight to reach the soil surface which stimulates late-season emergence/growth. In heavy infestations, complete control of morningglory is almost impossible…
-
According to Dr. Eric Prostko, UGA Corn Weed Specialist, weeds that emerge just prior to or at corn emergence can cause greater yield losses than later emerging weeds. Growers who implement weed control programs from 20 to 45 days after planting (DAP) usually prevents yield losses due to weed competition. Weeds that emerge 45 DAP…