Corn South November 2021

Corn Hybrid Preview

CornSou CornSouth o uuth ONE GROWER PUBLISHING, LLC

Southern Production & Marketing Strategies

A Supplement to Cotton Farming and The Peanut Grower Magazines

November 2021

CornSouth Refresh Your BMP Plan Standing in front of corn well over his head, University of Florida Institute of Food and Agricultural Sciences best management practices outreach coordinator Joel Love talks about Amanda Huber BMPs in corn as Editor part of the North Florida Research and Education Center Suwannee Valley virtual corn field day.

BMPs are not new, Love says, and neither are issues concerning nitrates in groundwater. Florida has developed a basin management action plan, or BMAP, as a framework for water quality restoration.

Agriculture’s role is to follow BMPs to meet nutrient load limits.

Love says BMPs must be practical and economically feasible. “The farm has to be able to make money and be sustainable.

That defines a water-quality BMP from an ag perspective.”

One of the first things to address is irrigation water management because nutrients, especially nitrogen, move with the water.

“If an irrigation system is not functioning properly or is not being managed correctly, it is not applying water at the right time or in the correct amount. Either you are not providing what the crop needs or nutrients are being leached below the root zone for corn. That’s key.”

The winter is a good time to evaluate your center-pivot irrigation system to be sure it is applying the correct amount uniformly. Love says 50% to 75% of nitrogen is being applied through pivot irrigation, so it’s critical to know these essential elements are being used as efficiently and effectively as possible.

For more on this and other corn topics, view the field day videos at https://arcg. is/0Ozvf1.

World Corn Supplies Increase

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exas A&M AgriLife associate professor and Extension economist Mark Welch says in his mid-September newsletter, Feed Grain Outlook, that world corn supplies are up on increased carryover and production. In addition to the larger U.S. corn crop, Chinese production is estimated up about 200 million bushels.

“Corn use in the 2021/2022 marketing year is up 172 million bushels.

Ending stocks of 512 million bushels has increased day of use on hand at the end of the marketing year from 87.9 days to 91.5 days.”

Welch says the U.S. Department of Agriculture’s most recent World Agricultural Supply and Demand Estimates report offered revisions to the corn supply and demand balance sheets that eased the supply situation in both the United States and globally.

“Beginning stocks for the 2021/2022 marketing year increased 70 million

bushels on downward revisions to ethanol use and exports. USDA increased both corn acreage and average yield estimates for the 2021 U.S. crop, adding another 246 million bushels to supply. Feed use in the new marketing year was revised up by 75 million bushels as were exports.

“With an additional 316 million bushels of supply and another 150 million bushels of use, ending stocks were up 166 million bushels. Days of use on hand at the end of the marketing year increased from a 30.9-day supply in August to 34.7 days. The projected season average farm price was down 30 cents to $5.45.”

According to Welch, 37% of the U.S. corn crop has reached maturity, which is slightly ahead of the five-year average.

“The crop condition index dropped three points this week to 352. Corn rated very poor was up 1% and that rated good was down 1%.”

New Product Corteva’s Prevathon Now FMC’s Vantacor Texas A&M University Extension agronomist Calvin Trostle reports that Corteva insecticide Prevathon, formerly from DuPont, is now a product of FMC under the name Vantacor. He says instructions for crops and pests are mostly the same; however, the percentage of active ingredient Rynaxypyr, or chlorantraniliprole, is different.

“This leads to significant changes in the labeled application rates.

Prevathon was 5%. Vantacor is 47.85%. Chlorantraniliprole targets the worms, such as corn earworm, and Prevathon has had a history of effective insect control.”

Trostle says producers need to read and follow the Vantacor label for rates, application timing and other specific instructions for pests or crops.

Covering Southern Corn Production CornSouth is a supplement to the Mid-South and Southeast versions of Cotton Farming magazine and to The Peanut Grower magazine for producers in Florida, Georgia, Alabama and Mississippi. To receive CornSouth, visit www.CornSouth.com and click on “Subscribe to CornSouth.”

Send comments to Corn South, 875 W. Poplar Ave., Suite 23, Box 305, Collierville, TN 38017 or Amanda Huber at ahuber@onegrower.com.

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2022 Corn Hybrids Corn South presents a partial listing of corn hybrids suited for the Southern growing region. For a more complete listing, contact your seed representative.

DEKALB DKC62-05 Brand (112RM) DKC62-08 Brand (112RM) • Versatile product, top yield potential • Very good stalks, roots and drought tolerance • Nice drydown and test weight • Proven performer, adaptable • DKC62-05 Brand is a great refuge option in proven genetics DKC65-20 Brand (113RM) • Shorter plant stature, broad canopy • Has shown impressive standability • Very good staygreen and intactness • Strong drought tolerance DKC65-93 Brand (115RM) DKC65-95 Brand (115RM) • Good stress tolerance and strong yield potential across environments • Attractive plant type with strong agronomics • Strong roots and stalks provide good standability • Excellent grain quality and test weight • DKC65-93 Brand is a great refuge option in proven genetics DKC65-99 Brand (115RM) • Strong yield potential and stability • Very good stalks and roots with a medium plant height • Very good southern rust tolerance • Broadly adapted across most soil types DKC67-44 Brand (117RM) • Can perform in low- and high-yield environments • Nice ear flex and grain quality • Very strong drought tolerance DKC67-94 Brand (117RM) • Exciting yield with broad east-to-west movement across the South • Versatile across soil types and crop rotations • Strong disease package • Additional above-ground protection with Trecepta technology DKC68-67 Brand (118RM) DKC68-69 Brand (118RM) • Strong foliar disease tolerance package TWITTER: @CORN_SOUTH

• Robust plant type with good canopy coverage • Strong yield opportunity • Versatility and drought tolerance to be used in most yield environments • DKC68-67 Brand is a new refuge option in proven genetics DKC68-95 Brand (118RM) • Attractive shorter product with a dense, full canopy showing top-end yield potential • Medium to medium-high planting populations recommended • Designed for the Southeast, Carolinas DKC69-99 Brand (119RM) • Top-end yield performance • Excellent staygreen, test weight and stress tolerance • Semi-flex ear • Additional above-ground protection with Trecepta technology DKC70-25 Brand (120RM) DKC70-27 Brand (120RM) • DEKALB Disease Shield product with excellent foliar disease tolerance • Strong performance in dryland or irrigated environments • Very good grain quality • DKC70-25 Brand is a great refuge option in fuller season genetics

NK Corn NK1082 (RM 110) • Broadly adapted hybrid for all yield environments • Moderate plant stature with great emergence for earlier planting • Flexible trait offering for a step change in above- and below-ground insect management NK1188 (RM 111) • Attractive plant height, ear placement • Improved test weight and grain quality • Dependable drought tolerance NK1523 (RM 115) • Consistent broadly adapted hybrid • Strong and robust root structure • Excellent yield potential with increased management

NK1677 (RM 116) • Higher-yielding hybrid that responds to management • Improved test weight and grain quality with desirable ear placement and husk cover • Strong stalks and roots NK1661 (RM 116) - NEW • Strong disease package and plant health provide crop rotation flexibility • Dependable stalks and roots allow for population flexibility across all environments • Performs best on the medium- to fine-soil texture types NK1748 (RM 117) • Improved agronomics with stable yield potential • Very strong roots with moderate plant and ear height • Improvement in test weight and grain quality NK1239 (RM 112) • Improved plant integrity with better roots and stalks for this maturity group • Good choice for higher-managed acres • Tall and leafy hybrid for dual-purpose silage potential NK1321 (RM 113) - New • Excellent plant health with strong roots and stalks • Consistent performance on poorly drained and variable soils • Central- and Eastern-adapted hybrid with excellent test weight

Pioneer P0953AM™ brand – New • Widely adapted, early hybrid with outstanding yield potential • Moderate plant and ear height with good stalks, strong roots and favorable brittle stalk resistance • Respectable overall disease tolerance with very good test weight and attractive grain quality P1222YHR – New • Eye-catching yield potential • Above-average emergence, early growth, ear size, stalks and roots with solid overall disease resistance • Moderately statured with good test weight and attractive grain quality NOVEMBER 2021 | CORN SOUTH

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2022 Corn Hybrids

New Tool Helps Manage Grain Moisture Content

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eveloped by Clemson’s Department of Agricultural Sciences and Precision Agriculture group, a new calculator is available to help farmers optimize moisture content of stored grain and evaluate field drying.

Equilibrium Moisture Content (EMC) is the moisture grain will attain if exposed to a specific relative humidity and temperature for a given time. EMC calculations are used to determine the best drying conditions.

Clemson agricultural mechanization and business program assistant professor Aaron Turner says, “Knowing the EMC is useful for estimating the moisture content of grain in storage, determining the lowest moisture content that can be achieved for given conditions and analyzing drying processes.”

A Goal Of Preserving Quality

EMC can be used as an indicator of how grain moisture will change. If EMC is lower than grain moisture content, drying will occur. If EMC is higher, rewetting occurs, although much slower than drying.

The calculator predicts how EMC will change using the fiveday forecast from OpenWeatherMap.org. This is useful for drying decisions where fans and air are used to condition the grain.

“The goal is to cool and dry the grain to reach safe storage conditions and to preserve quality,” Turner says. “When using natural air drying, heat and moisture are transferred from the grain to the air being blown through the bin.”

Traditionally, farmers have been advised to continuously run fans until the drying front moves all the way through the grain.

But recent research has shown intermittent fan operation works in some situations.

P1289YHR – New • Performs in low-, moderate- and high-yielding environments • Shorter plant height, lower ear placement, outstanding stalk strength, strong roots and above average mid-season brittle stalk resistance • Consistent test weight, competitive resistance to northern leaf blight P1464VYHR • Widely-adapted, high-yielding Optimum Leptra option with impressive yield potential and stability • Flexibility in placement with strong drought tolerance • Above-average Fusarium and Diplodia ear rot resistance with outstanding husk coverage for grain quality P1622VYHR – New • Optimum Leptra insect protection trait and impressive yield stability • Shorter plant stature and ear height;

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“This prevents warming the grain, rewetting and can help save electricity. The tool helps identify periods when the air would be productive to either cool or dry grain.”

Free, Web-based Calculators

This free web-based calculator can be found at https://bit. ly/3DfpVL2.

To calculate EMC for a single set of conditions, four inputs are required — temperature, relative humidity, crop and model. Several models have been proposed to represent this relationship, and the calculator allows users to select between them and see changes in the results. Farmers who don’t have a preference as to the model they use should use the default composite option.

The EMC calculator is one of several free, web-based apps from Clemson Precision Agriculture accessible from most devices with a web browser. These apps can be found at https://bit. ly/2YhcwmA. CS

moderate stalk strength • Large ears with attractive grain quality and with respectable resistance to gray leaf spot and northern leaf blight P1718VYHR – New • Works across a range of soils and yield environments with the Optimum Leptra trait • Taller plant, average ear placement, above-average midseason brittle stalk resistance, average stalk and root strength, average gray leaf spot resistance P1847VYHR • Excellent yield potential in a product suited for most yield environments • Solid drought tolerance in a hybrid with moderately tall plant stature and lower ear placement; very good staygreen • Intermediate resistance to gray leaf spot and northern leaf blight

P1870YHR • An early silk option in a full-season hybrid that delivers outstanding yield potential • Shorter plant height and lower ear placement combine for solid standability • Offers moderate resistance to gray leaf spot and northern leaf blight P2042VYHR • Full-season product for high-yield environments with the Optimum Leptra trait • Above average stalks, roots and midseason brittle stalk resistance • Excellent grain quality with average resistance to gray leaf spot

For additional information: • www.DEKALB.com/myseed • www.NKCorn.com • www.pioneer.com

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