ASK THE AGRONOMIST BLOG

Stine’s Ask the Agronomist blog is your source to the latest information from our expert team, including advice and insight on field practices, product recommendations, planting and harvest updates, new technologies, crop management, innovative research and information about how to keep your farm operation running smoothly year round. 

  • Mike Smith Image

    Part Four: Proper Herbicide Tank Mixes for a Late Planting Year (Like This One)

    August 22, 2019

    Posted by Mike Smith in Crop Management

    What is the best way to make sure my chemicals are compatible and to introduce them into the spray solution? If you have ever had to clean out a sprayer that contained mixed chemicals that were not compatible and resembled the consistency of cottage cheese, one lesson you learned is that you never want to experience that again. To check chemicals prior to making this mistake, keep a small Mason jar handy to put small quantities of the chemicals together and observe how they interact with one another. If they mix together and remain in liquid form or in suspension in water, you’re all set. If they turn solid, better in the jar than in your tank!

    With new chemicals on the market and new combinations of chemicals, the jar test is a necessary procedure for applicators. Another key procedure for applicators is the proper mixing order for chemicals. What goes in first? What goes in last?  This is a proven method to mitigate antagonism and produce the best solution for efficacy and sprayability.

    Management Tip: Fill tank one-third to one-half full with water and add any needed water-conditioning agents.

    If ammonium sulfate is to be used with glyphosate or glufosinate solutions, add it right away and agitate continually throughout the mixing procedure. During agitation, monitor for foaming problems, or if chemicals are known to foam, add de-foamers at this point.

    Management Tip: Remember the WALESorder for tank mixing.

    • W= Products that start with “W” formulations, such as wettable powders (WP) or water dispersible granules (WDG).
    • A= Agitation. Make sure agitation is not excessive, as this may increase foaming.
    • L= Liquid, or flowable, herbicides.
    • E= Emulsifiable concentrates (EC).
    • S= Surfactants, such as non-ionic surfactants, crop oil concentrates or methylated seed oil.
    • Drift control agents should be added last.

    Enlist E3 Applications

    With the exciting news of Enlist E3 soybeans, growers have been asking for spray recommendations. We typically recommend growers consult the Enlist tank mix guidelines outlined on www.enlisttankmix.com, but here are a few things to consider.

    By now, you should have applied an effective pre-emerge herbicide and have received adequate moisture to get good activation. For post-emerge applications, consider using Enlist Duo® (2,4-D Colex® + glyphosate). If you have glyphosate-resistant weeds, remember this system allows you to include glufosinate with glyphosate and Enlist One® for effective weed control strategies. The key to this system seems to be to mix and spray the solution as you would if you were applying glufosinate only. This means that the ammonium sulfate load is key as the carrier and should be used in the 1.25–2.5 lbs./acre range. Also, you should spray the solution at 12–18 gallons/acre to provide maximum coverage. Utilize tips that will provide optimum dispersion droplets while eliminating fines (consult the Enlist One or Duo labels for tip recommendations).  Under hot, humid conditions, this mix can get quite “hot,” so adding adjuvants or oil-based herbicides is not recommended unless absolutely necessary.

    Enlist Duo is an EC or SL formulation and confers tolerance to 2,4-D Colex and glyphosate. 

    • Rate range is 3.5 pt/acre (3–6” weeds) to 4.75 pt/acre (glyphosate-resistant or hard-to-control weeds)

    Enlist One is an SL formulation and confers tolerance to 2,4-D Colex.                                                        

    • Rate range is 1.5 pt/acre (3–6” weeds) to 2.0 pt/acre (glyphosate-resistant or hard-to-control weeds)

    Management Tip: When mixing with Enlist One, do not pour glufosinate or glyphosate into the tank simultaneously with Enlist One. Add products one at a time, allowing for adequate agitation between additions of products.

    Enlist can be sprayed on soybeans up to the R2 (full flower) stage. Labeled weeds controlled and suppressed include common ragweed, giant ragweed, morning glory, palmer amaranth, velvetleaf, waterhemp, marestail and lambsquarters.

    For more tips on herbicide tank mixing, consult the crop protection manufacturer’s website or technical representative. Remember to always consult herbicide use labels before application and follow all labels.

  • Todd Schomburg Image

    Find Stine at the 2019 Farm Progress Show

    August 15, 2019

    Posted by Todd Schomburg in Planting

    Join Stine at the 66th annual Farm Progress Show in Decatur, Illinois, August 27–29! Dubbed the nation’s largest outdoor farm event, the Farm Progress Show boasts more than 600 exhibitors, from farm equipment and supplies to seed products, agricultural inputs and more. You can find Stine at booth 1251, which is located in the northwest quadrant of the show grounds, just off Twelfth Progress Street. You can map our booth on the Farm Progress Show’s website.

    This year, Stine is excited to feature the latest corn and soybean technology on the market. Stop by and tour our show plot, where you will get a first-hand look at the following products:

    Stine Enlist E3 soybeans — Combines Stine’s high-yielding, elite genetics for powerful performance with tolerance to a new 2,4-D choline, glyphosate and glufosinate. This advanced herbicide-tolerant trait technology offers growers maximum flexibility and convenience, along with outstanding weed control. Stine is proud to offer growers the broadest lineup of Enlist E3 soybeans in 2020, with 75 different options for growers to choose from. We’ll have Stine 36EA02 and 38EB03 brand Enlist E3 soybeans available to view in our show plot.

    Stine Agrisure® Corn: From above- and below-ground insect protection to in-crop tolerance to glyphosate and other herbicides, the Stine Agrisure portfolio continues to be one of the top-performing corn trait packages in our lineup. Come check out Stine 9714-G (Agrisure GT), 9709-G (Agrisure GT), 9808E-20 (Agrisure Viptera® 3110) and R9734-32 (Agrisure Duracade® 5222 E-Z Refuge®) at our show plot, and make sure you ask our sales reps about our complete lineup of Agrisure trait corn in 2020. 

    In addition to viewing our show plot, make sure you ask one of our sales representatives how you can get one of our NEW Stine hats and our 2020 Stine Seed Catalog. You can also pop in to visit WYXY Classic 99.1’s very own Gale Cunningham, who will be broadcasting live from our booth the entire show, including live interviews, analysis and market reports.

    We look forward to seeing you at the 66th annual Farm Progress Show!

  •  Image

    Combating the European Corn Borer

    August 08, 2019

    Posted by Stine Seed in Crop Management

    One of the most common causes of poor crop yield, especially in corn, is the prevalence of the European corn borer. This grass moth, along with other similar insects, arrived in the Northeast United States in the early 1900s. Named for its prevalence in corn crops, the European corn borer can also drastically affect the yield of peppers, soybean, cotton, apples and more. This problem was remedied in the late 1990s with the Bacillus thuringiensis (Bt) protein, which helped protect crops for a number of years. However, Bt is slowly losing its effectiveness against insects like the European corn borer, which has built up a resistance to the protein.

    Identification
    When in its larval stage, you can identify a European corn borer by its off-white colored body, dark-brown head and its smooth skin with dark round spots scattered across its body. The larvae can reach about one inch in length. As an adult moth, a borer can be identified by its yellow coloration and dark, “zigzag” markings across the wings. Identification and early treatment of infested crops is crucial because adult female moths can lay up to 500 eggs in their short lifespan. These eggs can hatch within a week’s time.

    Detection
    Borers are present in the early summer months. As the larvae feed, you’ll notice damage to leaves in the form of shot holes. These larvae will eventually move to the more protected area of the plant sheath where they will continue to feed, molt and grow. Larvae will occasionally bore directly into the ears where they feed on kernels, which can result in broken stalks and rotting of the plant.  

    Control Tactics

    • Tillage. Till fields where borers were prevalent the previous year. Corn borers overwinter, so it’s important to disrupt their environment in the fall or in early spring before the adult borers emerge.
    • Utilize a good weed control program. Adult borers hide in tall grasses and weeds during the day. A good herbicide will keep most of the moths out of fields. Also, be sure to keep field edges and fence rows clipped.
    • Bt still does a great job controlling the borer population. Using transgenic corn hybrids that utilize Cry1Ab, Cry1F, Cry1Ac, Cry9c or Vip3A proteins can be very effective. Stine® Agrisure® Viptera brand corn ensures maximum yield by providing effective, season-long control over European corn borers and other harmful insects that can damage crops.
    • Pheromone traps can help determine the flight period for moths. When captured, experts can estimate the potential infestation levels in the area and help predict when the larvae will emerge and begin feeding on plants.
    • Many insecticides can be used for corn borer control. Granular formulations are recommended.

    Stine has a number of –10, –11 and –20 hybrids in a wide range of maturities that are excellent options for controlling corn borer, some of which include Stine 9212-10, 9316-20, 9436-11, 9714-20, 9728E-20, 9808E-20 and 9814-20. To learn more about these hybrids, contact your local Stine sales representative.