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Corn product selection and placement should include selecting the right trait package for each corn product and field to match the expected insect and weed pressure.
Questions farmers should consider include: Does the corn product include traits to protect against the above- and below-ground pests in my fields? Does the corn product offer multiple modes of action against targeted pests? Will the addition of a soil-applied insecticide be necessary to protect yield potential? Does the corn product require a separate refuge? What is the cost of planning, purchasing seed, and planting a separate refuge? What is the cost of a potential yield reduction in the refuge acres? Is the corn seed protected with an effective seed treatment? What is the cost of any seed treatment that might be added to the seed? Is the corn product approved for planting in the U.S. and does it have import approvals in key export markets and China?
RIB Complete® Corn Blend trait options for South Dakota:
Figure 1. (L) Corn rootworm larvae, (R) western corn rootworm beetle.
SmartStax® RIB Complete® Corn Blend (95% insect-protected and 5% refuge seed) offers the broadest spectrum of protection against above- and below-ground insects, as well as herbicide tolerance to glyphosate and glufosinate. A SmartStax RIB Complete Corn Blend product offers multiple modes of action for western corn rootworm (WCR), northern corn rootworm (NCRW), corn earworm (CEW), fall armyworm (FAW), European corn borer (ECB), and southwestern corn borer (SWCB), and a single mode of action for western bean cutworm (WBC) (Figures 1,2,3). With dual modes of action for corn rootworm (CRW) larval control, it is recommended for corn-on-corn acres that can be associated with high CRW infestations.
Figure 2. Black cutworm larva.
Genuity® VT Triple PRO® RIB Complete® Corn Blend (90% insect-protected corn and 10% refuge seed) contains herbicide tolerance to glyphosate, a single mode of action for CRW and dual modes of action for above-ground insect protection, including CEW, FAW, ECB, and SWCB. It is recommended for geographies that experience low to moderate CRW pressure.
Figure 3. European corn borer life stages. Egg mass (top left), larva, adult moth, pupa.
VT Double PRO® RIB Complete® Corn Blend (95% insect-protected and 5% refuge seed) offers herbicide tolerance to glyphosate and dual modes of action for above-ground insect protection, including CEW, FAW, ECB, and SWCB. It is recommended for fields without CRW pressure.
Acceleron® Seed Applied Solutions for DEKALB® Corn products with Monsanto traits help to provide first-rate control of pythium, fusarium, and rhizoctonia. Acceleron® Seed Applied Solutions with Poncho®/VOTiVO® provide protection against white grub, seedcorn maggot, wireworm, grape colaspis, and black cutworm, as well as a wide range of nematode species.
The Genuity Rootworm Manager app is a tool that can provide a custom risk assessment based on planting history and recommended response tactics to corn rootworm pressure throughout the season (http://www.genuity.com/resources/Pages/Genuity-Rootworm-Manager.aspx). The Corn Calculator is designed to quantify and compare the net value of Genuity traits versus competitor products (http://www.genuity.com).
For additional information and for help in selecting the best package of yield potential, insect protection traits, and efficient refuge options, please contact your local seed representative.
South Dakota corn growers can also choose Roundup Ready Corn® 2 products that offer the flexibility to select herbicide and insect control programs that fit their needs in each field.
The Genuity® Rootworm Manager app is a tool that can provide a custom risk assessment based on planting history and recommended response tactics to corn rootworm pressure throughout the season. The Corn Calculator is designed to quantify and compare the net value of Genuity® traits versus competitor products. For additional information and for help in selecting the best package of yield potential, insect protection traits, and efficient refuge options, please contact your local seed representative.