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Latham Hi‑Tech Seeds

Harvest Corn Silage at Optimal Milkline to Add to Your Bottom Line

Corn silage season is approaching quickly, so it’s a good time to review basics like how to determine when to harvest.

As the kernel matures from the dented cap, the milkline moves toward the kernel tip where it attaches to the cob. Harvesting at 50% milkline generally achieves approximately 65% whole-plant moisture. Optimal harvest for bunks/bags is 65 to 70% whole-plant moisture, or one-half to one-fourth milkline. Optimal harvest for stave upright silos is 63 to 65% whole-plant moisture, or three-fourths to one-half milkline.

Think of the kernel as a sponge. As the milkline develops, the kernel absorbs more moisture from the chopped residue. If you harvest silage corn that is too wet, juicing can occur. Inadequate fermentation and mold development also may result. It is advantageous to do a formal moisture check using a koster crop tester, for example.

One of the biggest drivers for milkline development is weather. Moisture, fertility, heat and plant health are four big drivers affecting milk line movement. When the plant is at full photosynthetic capacity, the corn silage whole-plant moisture can decline daily from 0.5 to one percent. Photosynthetic activity slows when the weather is cold, wet or cloudy, causing the corn plant to mature slower. Look at the forecast as harvest approaches because many changes can occur in five days.

Another way to improve the quality of corn silage is by raising the chopping height as most lignin accumulates in the lower portion of the stalk. Lignin is the structural component that helps plants stand. It’s a tradeoff to find the correct cutting height to maximize forage quality and to capture the most tonnage.

Some forage producers increase cutting height to help reduce moisture, so they can get started earlier. Raising the chop height 12 inches in a Penn State study left about 0.6 ton in the field but forage quality improved. Improved quality produces more milk for dairy farmers!

If you have any questions feel free to reach out at coreyc@lathamseeds.com.

August 25, 2022

Corn Silage, Crop, Fall, General, Season, Summer, Tech Tuesday
Latham Hi‑Tech Seeds

#AsktheAgronimst – Corn Rootworm

Phil Long, precision agronomy advisor, is scouting in the corn field. He highlights unique characteristics you could see with corn rootworm damage. You may be looking for the wrong thing!

Shannon Latham

August 11, 2022

#AskTheAgronomist, Agronomics, Corn, Crop, From the Field, General, Insects
Latham Hi‑Tech Seeds

Latham’s Premier Agronomy Center Opens for Tours

Latham Hi‑Tech Seeds’ Premier Agronomy Center at our company headquarters in North Iowa provides us with opportunities to collect data on real-world challenges. It also provides us with an opportunity to talk about the exciting new Latham® products, as well as management practices, that help you raise more bushels. This year we have 18 different plots (10 corn and 8 soybean) to demonstrate different techniques.

Interested in seeing Latham’s Premier Agronomy Center? Plan a visit! Latham Dealers are encouraged to make arrangements with their regional sales manager (RSM), so they can bring their customers throughout the growing season. We will be open for public tours on Thursday, Sept. 8, at 4 p.m.

Here’s what you can see inside Latham’s Premier Agronomy Center… As you drive west on 180th Street in Alexander, Iowa, you will see our Latham Showcase plots featuring our top corn and soybean products. Next to that are corn and soybean seed treatment demonstration plots. I also planted my hybrid stress research up front. Twenty different Latham hybrids were planted from 22,000 to 36,000 plants per acre, so we can pinpoint when each hybrid flexes and how we can better manage them in-season.

The second tier of plots contains high-yield plots (corn/beans) where we “throw the kitchen sink at it,” so to speak, to try to add some extra bushels. Our soybean Iron Deficiency Chlorosis (IDC) plot uses tactics like in-furrow chelated iron products with increasing population to overcome the challenges IDC can bring. We have a silage demonstration plot with a planting date demonstration. You’ll also see a sneak peak of Latham’s corn breeding program alongside some great observation plots featuring planting depth.

The third tier of plots are “long-term plots” that include cover crops, no-till and continuous corn. These practices come with many challenges, so we have several different products/treatments including in-furrow fertilizer, biologicals, in-furrow fungicide, and biological products for providing nitrogen to corn. We also have included herbicide demonstrations, showing how cover crops can increase water infiltration during pounding rains, as well as also reduce herbicide costs and improve weed control in soybeans.

All growing season long we’re providing opportunities to learn from our demonstrations in the Premier Agronomy Center. Follow @LathamSeeds on Facebook, Twitter, Instagram and YouTube. We share our weekly “Ask the Agronomist” videos, as well as season-specific information.

Team Latham

July 27, 2022

#FromTheField Crop Reports, Agronomics, Corn, Crop, Fertility, From the Field, Fungicide, General, Growth Stages, Insects, Precision Ag, Season, Seed Treatment, Soil, Soybeans, Summer, Weed Control
Latham Hi‑Tech Seeds

Summer Fertilizer Increases Alfalfa Winterhardiness

Core Catt, Forage Product Manager

With everything from groceries to gas on the rise, we understand the need to question whether expenses are necessary or justifiable. Below is information to support why fertilizing alfalfa in summer and applying fungicide to silage hybrids warrants your attention.

Fertilizing alfalfa in the summer helps fill the cellular gas tank of the plant’s crown, which helps increase its yield potential for the current growing season, as well as increases its potential for winterhardiness. All alfalfa benefits from in-season fertility, regardless of cutting schedule or strategy.

Summer seeding is fast approaching. July 20 through August 1 are key seeding dates for Latham Hi‑Tech Seeds’ northern territory, which includes North Dakota, as well as northern Minnesota and northern Wisconsin. August 1-15 is the range of recommended alfalfa seeding dates for southern Minnesota and southern Wisconsin while most alfalfa growers in Iowa typically seed in mid-August. Look at this graph.

Sourced from University of Wisconsin – Extension

Due to our late spring, many Midwest alfalfa growers have moved seeding alfalfa to this fall. The success of fall seeding depends on moisture. It’s important that alfalfa germinates quickly, develops a crown, and builds enough crown carbohydrates to overwinter.

Latham® AlfaShield^TMis a great seed treatment to help facilitate quick emergence. Think of AlfaShield as wrapping your alfalfa seed in a sponge. It helps protect the fragile germ of the seed. It also helps draw moisture to the seed, which is particularly important when seeding into moisture-stressed soils. Summers-seeded alfalfa is up against the time clock; approximately four to six weeks of significant growth needed to develop the crown before frost. The 2022 and 2023 Latham product guides include a dry matter (DM) ton advantage of AlfaShield compared to the old industry standard. AlfaShield has a bigger advantage in moisture-stressed soils.

Summer Considerations for Corn Silage

When I walk fields and test plots in the fall, I note a hybrid’s stay-green ability. I believe this observation relates to plant health. Healthy plants tend to have a lower probability of developing infection, which can create the environment for molds and mycotoxins to grow. Fungicide application promotes plant health and can boost yield and corn silage quality. Healthy, dark green, disease-free leaves are like solar panels capturing more sunlight for more photosynthesis. Healthy leaves also build more yield, as well as reduce chances for mold and mycotoxins to develop.

There are a variety of fungicides to select from, all of which inspire improved plant health. I have the most experience with BASF fungicide corn silage research relating to improved corn silage tonnage and forage quality. Several of the studies have resulted in two to three more tons of corn silage per acre plus the potential of reduced molds and mycotoxins is encouraging. With current commodity prices, that’s around an extra $140 to $210/acre in corn silage tonnage!

Investing fungicide is worth consideration for livestock producers, who raise their own forages. Molds and mycotoxins can be more challenging to quantify. When fed to livestock, however, they can severely impair animal performance. In severe instances, it can lead to mortality.

Feel free to contact your local Latham rep with any questions about summer fertilizing or fungicide application. You’re also welcome to email me at coreyc@lathamseeds.com. I’m always happy to visit with Midwest farmers who are interested in raising better meat, milk and eggs!

July 14, 2022

Agronomics, Alfalfa, Crop, Disease, Fungicide, General, Seed Treatment, Tech Tuesday
Latham Hi‑Tech Seeds

Tissue Test for Better Yields
Phil Long is in the field this week looking at the rapid growth phase of corn. He also shares what to scout for this time of year and how to send in a proper tissue test. Check out the video or read the article below to learn more.

With current input and commodity prices, we must get the most from each crop. To help your crop reach its potential, start with fertility. Regular soil tests are great, but the next step is in-season tissue testing.

Tissue testing supplements your soil test. You shouldn’t take a tissue test without a current soil test in hand. Once you take the tissue test, compare it to your soil test. See where the two tests match. Then make plans to address those needs either this season or next season.

Tissue testing every two weeks shows how your crop is developing throughout the season. If you only can tissue test once or twice, I recommend pulling a sample early (V4 for corn or soybeans) and before grain fill (R1 for corn and R3 for soybeans). This will give you a good understanding of what needs are not being met during crucial development stages.

Here are some tips on how to use tissue testing to your advantage this season:
1. Sample whole plant (above ground) when shorter than eight inches. Once a plant gets to reproduction, use the leaf below and opposite the ear leaf for corn. For soybeans, use the most recently matured leaf (usually the 2^nd or 3^rd leaf from top of the plant). Take at least 15 leaves/plants per sample.
2. Take multiple samples to compare locations in the field and to look for consistencies. If you are looking at a trouble spot, be sure to also take a sample from a good spot in the field. Send samples in a breathable bag (not a plastic Ziploc bag), or your results may not be good.
3. Compare back to your soil test. Keep environmental conditions in mind at the time of sampling. Most labs will categorize the nutrient levels based on what growth stage the plant was in when sampled. Tissue testing is like taking your temperature; the tissue test can reveal consistencies in a field that must be addressed to break that next yield barrier.
Check out other corn videos and articles on The Field Position.
Team Latham

June 29, 2022

#AskTheAgronomist, Corn, Crop, Disease, From the Field, Growth Stages, Soil, Summer, Tech Tuesday
Latham Hi‑Tech Seeds

Alfalfa Threats

Corey Catt, Forage Product Manager

Like other crops, high-quality alfalfa is commanding a good price. Strong market prices can change the economic thresholds, making it easier to justify investing in pest control. Below are some charts to help guide you.

Many insects can damage alfalfa, so it’s important to build a plan that keeps alfalfa healthy. Insects can damage the plant so much that the plant can acquire a disease and die.

Each alfalfa plant is like a factory. Crop scouting, spraying and fertilizing is like providing critical maintenance to keep the factory operating efficiently, as well as to optimize yield and quality.

Controlling alfalfa insects generally involves two things: (1) spraying insecticide; and (2) cutting alfalfa early. Check out these two articles for more insight.

Alfalfa insects: What to look for and how to scout

Alfalfa Weevil

Check out other alfalfa articles and videos from our experts.

June 22, 2022

Agronomics, Alfalfa, Crop, Disease, Fungicide, General, Growth Stages, Insects, Season, Spring, Summer, Tech Tuesday
Latham Hi‑Tech Seeds

#AsktheAgronomist – Tough Start

It’s been a tough start to the 2022 season with delayed planting and cool weather. Phil Long, precision agronomy advisor, unpacks GDUs across Latham Country and when corn and soybean stands will really take off. Check out more agronomy videos.

Team Latham

June 7, 2022

#AskTheAgronomist, Agronomics, Corn, Crop, Emergence, From the Field, Growth Stages, Soil, Soybeans
Latham Hi‑Tech Seeds

#AsktheAgronomist – Stand Count

Team Latham

May 26, 2022

#AskTheAgronomist, Agronomics, Crop, Emergence, Growth Stages, Soybeans
Latham Hi‑Tech Seeds

Estimating Optimal Time to Cut Alfalfa
Every grower tends to have a different strategy of when to begin cutting alfalfa. Some cut on a certain date in May no matter what and continue the cycle every 28 days. Some growers wait until the alfalfa has reached about 10% bloom, which historically provides a good balance between the highest yield without compromising quality.

To measure quality for an area of the field, you could use the scissors technique. This is a good method, but it takes a couple of days to get results from the lab. During that time, the plant has changed.

Another method used to estimate the optimal first cutting date for alfalfa is Predictive Equations for Alfalfa Quality (PEAQ) method. Developed by the University of Wisconsin, PEAQ uses the alfalfa stand height and maturity stage (vegetative, bud or open flower) to estimate the relative feed value (RFV). In general, it is recommended to harvest alfalfa at about 150 RFV for milking dairy herds and 125 RFV for heifers, stock cattle and lactating beef cattle.

You can order an actual measuring stick or use a tape measure and follow these steps as outlined in the May 2021 issue of “Integrated Crop Management News” by Iowa State University Extension and Outreach:
1. Choose a representative two-square-foot area in the field.
2. Determine the stage of the most mature stem in the area by using the definitions at the top of Table 1.
3. Measure the tallest stem in the area. The tallest stem may not be the most mature stem. Measure the stem from the soil surface to the tip of the stem, not to the tip of the leaf. Straighten the stem for an accurate height measurement. Based on stem maturity and stem height, use Table 1 to estimate the RFV of standing alfalfa crop.
4. Repeat steps 1-3 in five representative areas across the field.
5. To estimate harvest quality, subtract 15-25 RFV units to account for harvest losses during the haylage or hay harvest process, respectively.
6. Determine optimum harvest time using the PEAQ estimate, livestock forage quality needs, considerations of upcoming weather forecasts favorable for harvest and drying, and the general assumption that RFV drops three to five points per day.
Source: Integrated Crop Management News, and Iowa State University Extension and Outreach.

Maintaining Quality

Alfalfa value is based on quality. For quick calculation, the old standard of $1/point of RFV. (NOTE: The current market is worth more than $1 per point, but we’re going to stick with this for easy math.) If your RFV is 200, one dry matter ton of this forage is worth $200 / dry matter ton. In the Midwest, four cuttings of alfalfa can yield 5 to 7 tons.

High commodity prices also have us reflecting on ways to extend our alfalfa stand. It’s best to keep your cutting equipment sharp. It’s generally recommended to cut a pure stand of alfalfa at two or 2.5 inches from the ground. If you have a mixed species with grass in the mix, cutting it at 2.5 to 3 inches helps maintain the grass stand life.

Good fertility programs, insect management programs and fungicide treatments also impact the quality of alfalfa and corn silage. We will provide information about these topics as the growing season progresses.

Check out other alfalfa articles on The Field Position.
May 25, 2022

Alfalfa, Crop, General, Spring, Summer
Latham Hi‑Tech Seeds

#AsktheAgronomist – Emergence

Precision Agronomy Advisor, Phil Long, brings us an update from the field. He shares what to keep an eye on with this late spring and how emergence may be quicker than normal.

Team Latham

May 19, 2022

#AskTheAgronomist, Agronomics, Corn, Crop, Emergence, General, Growth Stages, Season, Soybeans, Spring

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