Herbicide resistance in cotton and soybeans has spurred the renewed licensing and development of new chemistry that will provide more tools for row crop farmers in 2007.
Though it has been well documented there is no super new magic bullet herbicide to control Palmer amaranth that has developed resistance to glyphosate, there will be additional bullets in the gun to fight this and other weeds with resistance to herbicides. The spillover will provide some interesting new varieties, most with some form of built-in pest resistance. Growers will have a number of options to pick from for the 2007 crop season.
Worldwide there has been a decrease in spending on pesticide research and development. Many of the new tools available to growers for 2007 are actually old materials that have been repackaged and formulated to offer growers some interesting alternatives for the 2007 crops season.
Some of the new materials expected for 2007 to help soybean and cotton growers combat the challenge of herbicide resistance include:
Prowl H20, a different formulation of pendamethalin that can be applied postemergence, is expected to get a label for the 2007 cropping season. Prowl was a primary herbicide in cotton and soybeans prior to the widespread use of glyphosate resistant cotton and soybean varieties. Though it probably fits best when used as a pre-emergence herbicide, the new formulations will give growers some new options for 2007.
Resolve DF is another material that can be used with glyphosate or as a stand alone material for controlling weeds that are missed by glyphosate in Roundup Ready corn. It has good residual activity on late-emerging weeds and provides an alternative mode of action to help reduce the chance of developing glyphosate resistance in weeds.
Reflex received a label for cotton late in the 2006 growing season and will be one of a number of herbicides available to growers to combat glyphosate resistant pigweed, or to avoid development of glyphosate resistance. Reflex controls a broad spectrum of weeds, but is particularly valuable to cotton growers because of its activity on Palmer pigweed.
Prefix, a combination of Dual and Reflex is expected to be available for the 2007 season for soybeans. It is best applied pre-emergence, and provides excellent early season control of pigweed.
Soybean growers can protect valuable yield potential with Prefix herbicide. Offering the solution to yield-robbing grasses and broadleaf weeds in soybeans, Prefix consists of two proven chemistries, S-metolachlor and fomesafen, in a co-pack form for pre-emergence weed control in conventional and glyphosate-tolerant soybeans.
Flexstar is a combination of one pint per acre of Reflex plus Touchdown. Flexstar herbicide provides fast, effective control of broadleaf weeds in soybeans. Within 12-24 hours of application, Flexstar starts controlling the toughest ALS-resistant weeds, including tall waterhemp, ragweed, morningglory, pigweed and cocklebur.
Flexstar provides one of the best weed control options available by controlling more than 50 species of broadleaf weeds — more than any other comparable product. What's more, when tank-mixed with Fusion herbicide, Flexstar supplies complete one-pass control for conventional soybeans. For enhanced control of morningglory, velvetleaf, black nightshade and waterhemp on glyphosate-tolerant soybeans, tank-mix Flexstar with a glyphosate brand.
Touchdown Total is another herbicide for use in the battle with herbicide resistance. It will be sold in 2007 as a 4.17 pound material with a surfactant system included in the formulation. Touchdown Total is the next generation in glyphosate herbicide technology.
With a popular use rate of 24 ounces per acre (1.5 pints) calculations are fast and easy. Touchdown Total has demonstrated equal performance to Roundup WeatherMax in field trials.
Lexar-Lumax is a combination of Magnum, Aatrex and Callisto for grass and weed control in Roundup Ready crops to either combat or help reduce problems with glyphosate resistant pigweed and broadleaf
In addition to new herbicide products, growers will also benefit from several new insecticides and fungicides scheduled to hit the market in 2007.
Mustang Max insecticide provides long lasting residual, allows for early treatment and provides residual control of over 100 pests in 128 crops. It is an advanced pyrethroid technology that tank-mixes with post herbicides, plant nutrients and fungicides.
Carbine, which had some state labels in 2006, will be labeled for use in the Southeast for the 2007 crop. Carbine is from a new class of chemistry called pyridinecarboxamide that has a different mode of action from the neonicotinoids, organophosphate or pyrethroid insecticides commonly used against lygus or plant bugs and aphids.
Diamond insecticide is a chitin-inhibiting material that has good residual activity on worms and good stinkbug activity. It is particularly safe for non-target insects and humans. A label is expected for the 2007 crop season.
Revus, a new fungicide, provides weatherproof and long-lasting protection against late blight in potatoes and tomatoes, as well as downy mildew in vines and vegetable crops. Results from a large number of field trials conducted around the world show that Revus provides consistent performance even under extreme disease pressure.
Karate EC and Karate Z are new formulations of the popular synthetic pyrethroid for insect control in soybeans and cotton.
Cost and uneven expression of the bt gene by some Bollgard varieties and the need for control in refuge areas may lead some growers to use rynaxypyr, a new family of chemistry for bollworm control in cotton. It is unclear what the tradename will be for the new material, but it is expected to get a label for cotton in 2007.
Aeris, a seed applied fungicide system received a label for use on cotton in November 2006. In tests across the Southeast, it provided an average of 21 days suppression of thrips and 42 days for aphids. Aeris provides similar control as Avicta Complete Pak.
Widestrike is new technology using two bt genes. It was available in some areas in 2006, but is expected to be widely available for the 2007 crop season in cotton. It provides full-season control of tobacco budworm, soybean loopers, fall armyworm and a number of cotton insect pests.
In addition to more pesticides, cotton growers will have access to several new varieties in 2007.
DP 454 BG/RR is a new open boll type variety available for the first time in 2007. It requires more management than some other varieties, specifically it requires harvesting in a timely manner and works best in medium to heavy soils.
DP 515 BG/RR is a new mid- to full-season variety that works well across all Southeast soil types and will wait for the picker.
DP 117 B2RF is a new flex variety that tends to pick better than it looks in the field, in tests across the Southeast. On good soil it can get tall and does not work well on sandy soils.
DP 164 B2/RF and DP 167 RF are sister varieties, both with the flex gene and one with the BT gene. These are full season varieties that tend to grow tall, much like DP 90 and do not work well on heavier soils.
DP 143 B2/RF and DP 147 RF are mid to full season varieties.
PHY 310 is an early maturing Roundup Ready variety that was released on a limited scale in 2006, but will be available for widespread use in 2007.
PHY 370 WR is another variety released in limited quantity in 2006, but will be available in ample supply for 2007. It contains Widestrike technology for insect protection and is Roundup Ready. This is an early maturing variety aimed at helping growers manage early season insect problems.
PHY 485 WRF is an early to mid-maturing variety that has the flex gene stacked with Roundup Ready and Widestrike genes.
PHY 480 WRF is another early- to mid-maturing variety that has produced excellent results in the upper Southeast.
DG 2490 B2RF is a new Bollgard II/Roundup Ready Flex variety, also tested under experimental number DG 06064 B2RF. It has excellent seedling vigor, a medium plant height, medium maturity, and has shown broad adaptability with excellent yield potential and fiber quality characteristics in the Southeast.
FM 1600LL is an early to mid-season variety with LibertyLink technology that is expected to perform well as an early maturing variety in the Southeast.
FM 1800LL is a mid- to full-season variety with LibertyLink technology and is well-adapted to the Southeast growing regions and the full season production regions of the Mid-Atlantic and the Mid-South.
FM 988LLB2 is a medium-maturing LibertyLink/Bollgard II variety well-adapted to the Southeast. Plants are very compact with short to medium stature. Boll retention is high on the first fruiting positions for a consistent fruiting pattern. Fiber quality is good.
FM 965LLB2 is a mid- to full-season LibertyLink/Bollgard II variety suitable for most well-drained soils across the Cotton Belt. It has moderate early season growth that can respond to lower rates of plant growth regulator.
FM 9068F is an early-maturing Roundup Ready Flex variety with a wide range of adaptability throughout the Mid-South and Southeast with good productivity across soil types. It is an easy-to-manage variety requiring low rates of plant growth regulator to no plant growth regulator application. Fiber quality is very good.
FM 9060F is an early-maturing Roundup Ready Flex variety particularly suited to the central and northern regions of the Mid-South as well as the mid-Atlantic states. Plants are compact and should work well in narrow row configurations and conventional row patterns.
FM 1880B2F is a full-season Bollgard II/Roundup Ready Flex variety. It grows to a medium to large plant that requires moderate growth regulator treatments to set an excellent crop. It has performed best in the Southeast and mid-Atlantic states.
EDITOR'S NOTE — The products included in this article are not intended to be inclusive of all products available in 2007, rather a sampling of what is available to the next cropping season.