By Ramdas Kanissery and Nathan Boyd Cold temperatures throughout Florida has vegetable growers concerned about the impact the weather is having on herbicide effectiveness. Low temperatures slow weed growth and affect the weed’s herbicide uptake, leading to ineffective weed control. Less of the herbicide reaches the target, providing a less successful weed control outcome. However, herbicide performance in response to …
Effects of Heavy Rain on Pre-Emergent Herbicides in Vegetables
By Ruby Tiwari, Nirmal Timilsina and Ramdas Kanissery Heavy rainfall received in vegetable-growing regions of Florida frequently creates standing water in fields (Figure 1). These farms are often in an early or mid-growing season during such severe weather events. Pre-emergent (residual) herbicides that are integral to vegetable production to suppress weed emergence are applied during this period. Most pre-emergent herbicides …
Organic Herbicide Options
By Ruby Tiwari and Ramdas Kanissery Organic growers in Florida fight weeds throughout the year, as it is one of their significant challenges in production (Figure 1). Organic producers typically use various mechanical and cultural methods like tillage, cultivation, hand-weeding, mulching, etc., to keep weeds in check on their farms. While there is a general conception that there is no …
HELM Agro US Launches New Gamma™ Herbicide for Grapes
Tampa, FL – HELM Agro US, Inc., a global manufacturer of high-quality crop protection and fertilizer products announced that Gamma™ herbicide has received federal registration from the U.S. Environmental Protection Agency. Gamma is a non-selective PPO-inhibitor herbicide with a novel active ingredient called Tergeo™ for directed postemergence applications in grapes. In product development trials and regulatory studies, Gamma has demonstrated …
Ampersand® Adjuvant Can Reduce Organic Herbicide Use Rates by Half Without Sacrificing Performance
BOCA RATON, Fla. /PRNewswire/ — Attune Agriculture, the leader in combining agriculture and food science to create products using hydrocolloid technology, announced that its OMRI listed adjuvant, Ampersand®, can reduce the use rate of organic herbicides by 50%, while maintaining the same level of performance as high use rates. Ampersand is a unique adjuvant formulated with hydrocolloids that provides superior deposition, …
Precision Sprayer Can Reduce Herbicide Use
By Arnold Schumann, Nathan Boyd, Shaun Sharpe and Jialin Yu In the March 2019 issue of VSCNews, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) smart sprayer technology using machine vision for Florida vegetable and strawberry crops (VSCNews.com/smart-sprayer-technology-for-better-weed-control) was introduced. Subsequently, a series of herbicide spray trials were conducted to prove that the smart sprayer performs well …
Herbicide Recommendations for Pepper Production
By Nathan Boyd Weed management can be a significant issue for many farms that grow peppers using a plasticulture production system. Nutsedge species can penetrate plastic mulches, and broadleaf weeds and grasses can emerge in the planting holes or in the rows between the raised, mulch-covered beds. Fumigants are an important component of weed management. However, except for metam products, …
Herbicide Update for Growers
By Alison DeLoach Rely, an herbicide used as an alternative to glyphosate, has recently been transferred from Bayer to BASF. This transfer of rights has raised questions for growers about whether BASF will support use of the herbicide. Stanley Culpepper, a weed scientist with the University of Georgia, shared his thoughts on Rely. Bayer, the previous manufacturer and marketer of …
Hydrogels as Herbicide Carriers in Vegetable Plasticulture
By Ramdas Kanissery and Camille McAvoy Weed management is a fundamental step in the successful production of vegetable crops in Florida under commercial plasticulture production systems. Soil fumigation was one of the most successful means of reducing weed populations. None of the alternatives to methyl bromide have a broad spectrum of activity against weeds. This necessitates the need for a …
Selecting Herbicides for Stone Fruit
By Breanna Kendrick With perennial crops such as stone fruits, growers are limited in their weed management options because they can’t choose practices like crop rotation. Therefore, selection of proper herbicides is critical for effective weed control. Peter Dittmar, assistant professor with the Horticultural Sciences Department at the University of Florida Institute of Food and Agricultural Sciences, specializes in weed …