Fertility
Crops don’t grow well without ample plant food, and fertility is the biggest recurring expense on any farm. Finding the best and most cost-effective ways to meet the fertility needs of your crops will help them thrive all season long and build better yields at harvest.
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Farmers: Do Bigger Numbers Mean Better Products? | TEVA
Bigger numbers don’t always mean a better product for farmers. There's more to the story. TEVA's Mark Coots explains.
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Variable Rate Fertility | Ag PhD
The Hefty brothers discuss the benefits of doing variable rate fertilizer application, as well as some drawbacks.
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Ag PhD Corn Workshop, Variable Rate Fertility, Get More from Residual Herbicides
Brian and Darren invite you to attend the Ag PhD Corn Workshop on February 18, 2026. They also discuss the benefits and drawbacks of variable rate fertilizer application, and how to get your residual herbicides to last longer in the soil.
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Farmer Aimed for 550+ bu/A… Shocking Outcome | TEVA
“Beyond what I ever thought possible.” Picture a corn field planted at 52,000 and 90–95% of stalks with twin ears. Sound almost too good to be true?
As a sixth-generation farmer in Wrightsville, Georgia, and two-time NCGA high-yield national winner, Ben Jackson has experienced his share of the h...
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Ag PhD Soils Clinic | Ag PhD
Brian and Darren invite you to attend the Ag PhD Soils Clinic on February 17, 2026.
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Match Soil Test Data to Yield Data | Ag PhD
Brian and Darren discuss how to improve soils and fertility plans by matching your soil test data to your yield data.
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Ag PhD Soils Clinic, Match Soil Test Data to Yield Data, Planting Corn Early
In this episode, Brian and Darren invite you to attend the free Ag PhD Soils Clinic on February 17, 2026. They also discuss improving your fertility program by matching soil test data to your yield data, and then how to successfully plant corn early.
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Excess Lime | Ag PhD
Brian and Darren discuss the problem of excess lime, and how it affects soil tests, and how you can start to fix the issue.
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Ag PhD Agronomy Workshops, Excess Lime, Corn Rootworm Control | Ag PhD
Brian and Darren invite you to attend an Ag PhD Agronomy Workshop this January. They also discuss correcting soils that have excessive calcium, as well as how to reduce corn rootworm pressure.
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Soybean Workshop, Improving Spray Coverage, Cation Exchange Capacity | Ag PhD
The Heftys invite you to learn everything about soybeans on Jan. 14, 2026. Plus they talk sprayers and heavy soils in depth. They show you how to ID and 86 the dreaded purple deadnettle, and Darren encourages a soft touch when it comes to your seeds.
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Cation Exchange Capacity | Ag PhD
Soils are negative, but Brian and Darren are positive they can teach you CEC in 6 minutes!
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The Importance of Sulfur | Ag PhD
The Hefty brothers discuss the need for sulfur and how to apply it.
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Soil pH and Lime | Ag PhD
Darren explains the basics of what lime, or calcium carbonate, does when applied to soil.
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Grain Bin Safety, The Importance of Sulfur, Planting Population | Ag PhD
Brian and Darren discuss the importance of safety when working in and around grain bins. They also talk about sulfur and how to apply it, and when you should consider increasing or decreasing planting populations in corn and soybeans.
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Organic Matter | Ag PhD
Darren and Brian discuss some steps you can take to increase your soil organic matter, as well as how to decrease it if your soil has too much.
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Ag PhD Naturals Workshop, Weed Control in Soybeans, Organic Matter | Ag PhD
Brian and Darren invite you to attend the Ag PhD Naturals Workshop on January 13, 2026. They also talk about getting great weed control in soybeans, as well as how to increase or decrease soil organic matter levels.
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Where Fertilizer Comes From | Ag PhD
Darren talks about the source of phosphorus fertilizer, and that it's not something to be feared.
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How Plants Get Food | Ag PhD
Darren explains how plants get the nutrients they need.
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Making Fall Fertilizer Work | Ag PhD
Darren talks about getting the most out of your fall fertilizer application.
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The Importance of Iron | Ag PhD
The Hefty brothers discuss the need for iron in crops as well as how to apply it.
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Drying Grain, The Importance of Iron, Prepaying for Crop Inputs | Ag PhD
Brian and Darren explain why grain needs to be at a certain moisture percentage for storage. They also discuss the need for iron in crops and how to apply it, and talk about the pros and cons of buying next year's crop inputs now.
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Banding vs Broadcasting Fertilizer, Phytophthora Root Rot, Manganese | Ag PhD
Brian and Darren talk about two different ways of applying fertilizer. They also discuss the best ways to fight phytophthora in soybeans, and how to test for and apply manganese.
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Manganese | Ag PhD
Brian and Darren talk about the importance of manganese for your crops, and how to test for and apply it.
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Banding vs Broadcasting Fertilizer | Ag PhD
The Hefty brothers discuss two different methods of applying fertilizer.