Weed Challenges For Vegetable Growers

Julian Smith

Weeds are a constant challenge for vegetable growers. Those in the crop protection field know what growers are going through to keep these pests from taking over crops. AVG caught up with Ron Rowcotsky, the western region marketing manager at Amvac Chemical as well as Julian Smith, director of Discovery and Innovation at Brandt Consolidated, to get some insight on problematic weeds, resistance issues, ground water contamination, and more.

Q1 Have any weeds emerged in recent years that have proved especially problematic for vegetable growers?

Smith: Water Hemp and Palmer Amaranth have been problematic, as well as acetolactate synthase (ALS) resistant Kochia in the Western U.S.

Rowcotsky: Purslane and Chickweed are two weeds that are espe-cially problematic. Few weed control alternatives are available for effec-
tive control of these weeds; among them are hand-weeding and Dacthal herbicide. Two other tough-to-control weeds are Groundcherry and Shepardspurse. Dacthal aids in the control of these weeds.

Q2 What are the biggest weed challenges vegetable growers will face in 2013?

Smith: Weed resistance to traditional herbicides will continue to be a problem, as well as the loss of some of the older chemistries no longer being used.

Rowcotsky: There can be many weed challenges depending on conditions but among the most difficult to control are Purslane and Chickweed.

Q3 Does glyphosate resistance continue to be a problem? With what weeds? What can growers do?

Smith: Yes, we do see this problem continuing, particularly with Water Hemp and Palmer Amaranth. Manufacturers are coming out with new chemistries to combat resistant weeds.

Rowcotsky: Whenever one herbicide or mode of action is selected year after year, issues with resistance have been known to become a problem. It is best to employ IPM practices including alternating herbicides with different modes of action and/or employing the use of tank mixes with products that have different modes of action.

Q4 Has your company come out with any new herbicides and/or label additions? Growers of what crops would be interested?

Smith: We recently launched a new product line called Brandt Smart System, which are foliar nutrients designed for use with herbicides, including glyphosate and additional chemistries that will combat resistant weeds. Some of the weed resistance products on the market cause temporary plant stress, which is apparent in the yellow flashing that appears on leaves. Brandt Smart System nutrition helps plants fight through post-emergent herbicide stress and has resulted in better yields and quality, which is noticeable in size, color, flavor, firmness, and vigor. Brandt Smart System has been extremely successful on corn, cotton, soybeans, and peanuts as well as tomatoes, potatoes, onions, garlic, and sweet corn.

Rowcotsky: Since most herbicides do not adequately control Purslane or Chickweed and hand-weeding is so expensive, to say nothing of the labor issues, AMVAC’s Dacthal herbicide has been an option. Dacthal offers consistently effective control of Purslane and Chickweed and continues to be an excellent tool for vegetable growers.

Q5 Ground water contamination has become a huge issue, especially in the West. Are you taking those environmental concerns into account? How so?

Smith: Yes, environmental concerns and sustainability drive all new product development and technology at Brandt. We have a range of solutions designed to reduce ground water contamination, to keep irrigation system lines clean and free from disease and contamination, and to control spray drift from herbicides and other crop inputs.

To reduce water contamination, we have been using a product called Erosion Guard, which helps clarify water and control sediment runoff and nutrient and chemical leaching into ground water. We are also using polymer-based products, such as Stockosorb and Stockopam.

Other new developments that help reduce ground water contamination
are nutrient utilization enhancers, such as N-Boost, which improve nutrient
uptake and use so that plants need less fertilizer. This has helped reduce nitrogen run off.

Another segment of our business is Brandt Hydrology, which focuses on water quality testing, treatment, and maintenance in agricultural irrigation systems. These products help keep lines clean and free from biological and mineral scale build up (such as bacteria, mold, slime, fungus, and mineral deposits) that can clog and contaminate irrigation systems.

Brandt also offers more than 50 OMRI listed products, including nutrition, protection, and adjuvant chemistries and recently completed construction of a new 90,000-square-foot organic manufacturing facility in Fresno, CA.

Rowcotsky: All Amvac products are tested and must meet the ever increasing standards set by EPA and individual states. The data requirements address ground and surface water and drinking water assessments and are part of the dietary contribution analysis. When considering new active ingredients or product acquisitions, we assess all
potential regulatory impacts.

Topics: , ,

Leave a Reply

Crop Protection Stories

CitrusNational Scientific Summit On Herbicide Resistant Weeds Coming In September
August 27, 2014
Topics to be covered include the economics of proactively managing herbicide resistance, education and outreach efforts, and incentives and regulatory initiatives. Read More
VegetablesExperimental Herbicide Technology Blasts Weeds In Rows
August 27, 2014
The technology uses an air compressor to spray corncob grit on both sides of a crop, killing young weeds. Read More
Insect ControlCover All Angles When Taking On Threecornered Alfalfa Hoppers
August 25, 2014
Learn how to ID, the survival and spread, and management methods for this insect pest. Read More
Crop ProtectionGetting To The Root Of Good Soil Health Requires Some Digging
August 21, 2014
Dave Gilliam of Horticultural Alliance says more citrus growers are paying attention to what's happening below the ground in their groves. Read More
Crop ProtectionBioConsortia Inc. Bolsters Executive Team
August 18, 2014
Industry veterans Christina Huben and Dr. Susan Turner bring experience to plant biotechnology firm. Read More
Crop ProtectionCover Crop Solutions Offers New Three-Way Cover Crop Mix
August 13, 2014
A fast-growing cover crop mix needs 45 to 60 days of growth in warm conditions. Read More
BerriesStudy: Strawberry Web Tool Could Save $1.7 Million Over 10 Years In Fungicide Use
August 5, 2014
UF/IFAS researchers find spray advisory system also benefits the bottom line. Read More

The Latest

Crop ProtectionGetting To The Root Of Good Soil Health Requires Some D…
August 21, 2014
Dave Gilliam of Horticultural Alliance says more citrus growers are paying attention to what's happening below the ground in their groves. Read More
Crop ProtectionBioConsortia Inc. Bolsters Executive Team
August 18, 2014
Industry veterans Christina Huben and Dr. Susan Turner bring experience to plant biotechnology firm. Read More
Crop ProtectionCover Crop Solutions Offers New Three-Way Cover Crop Mi…
August 13, 2014
A fast-growing cover crop mix needs 45 to 60 days of growth in warm conditions. Read More
Crop ProtectionBiopesticides Vs. Traditional Agrochemicals
August 4, 2014
To effectively control pests, understand how the products work and know the biology of insect pests. Read More
Crop ProtectionFrench Crop Protection Firm Acquires Fine Holdings Ltd.
August 4, 2014
De Sangosse group seeks to bolster its business with purchase of plant growth regulator specialist. Read More
CEU SeriesCEU Series: Gain A Deeper Understanding Of Fertilizers
August 1, 2014
It's never too late to grow your knowledge of plant nutrients. Read More
BerriesNew Study Finds Simple Solution To Monitoring Spotted W…
July 31, 2014
UF/IFAS researchers are using a mixture of yeast, sugar, and water to lure, trap major berry pest. Read More
Crop ProtectionNew York Combats Giant Weed
July 30, 2014
The state continues efforts to control this species that is harmful to humans. Read More
CitrusThe Exponential Rise Of Biopesticides
July 28, 2014
The first sustainable commercial success stories in the biopesticide market were seen in the 1980s and 1990s. Since then, the market has grown exponentially, and is projected to exceed $3 billion by 2016. Read More
Citrus9 Resources For All Of Your Biopesticide Questions
July 25, 2014
As the use of biopesticides continues to increase at a staggering rate, more and more resources are being made available to the public to help increase awareness of the sector. Read More
Apples & PearsAn Awakening To The Value Of Biopesticides [Opinion]
July 25, 2014
With the entry of major suppliers into the biopesticide arena, whether or not biopesticides work is no longer the question. Now, people want to understand how they work. Read More
Apples & PearsPGRs: The Overlooked Piece Of The Biopesticides Puzzle
July 25, 2014
Yield and quality can be as important to growers as crop protection. Read More
Crop ProtectionDon’t Let Your Cruciferous Crops Get Beaten By Cl…
July 23, 2014
Learn how to ID, the survival and spread, as well as management methods for this vegetable disease. Read More
Crop Protection4 Methyl Bromide Alternatives To Consider
July 22, 2014
With the phase-out of the popular soil fumigant, it's important to know you have crop protection options. Read More
Crop ProtectionFlorida Farmers Feeling Pains Of Methyl Bromide Phase-O…
July 22, 2014
Growers look for recommendations to keep fields clean in the absence of the long-used fumigant. Read More
CitrusPhytech To Bring PlantBeat Service To U.S. Farmers
July 22, 2014
After growth in Israel, Phytech’s PlantBeat comes to California. Read More
Crop Protection2014 Florida Agricultural-Environmental Leadership Awar…
July 17, 2014
Growers place an emphasis on protecting the state's fragile water resources. Read More
Crop ProtectionUnexpected Discovery Prompts Giant Snail Alert
July 15, 2014
L.A. International Airport inspectors confiscate 67 live specimens of notorious invasive pest from East Africa. Read More