While iron is the fourth most common element in the Earth’s crust and most soils contain abundant levels of it, many times naturally occurring iron is not found in the forms most readily available for plant uptake.
University of Illinois professor Fred Below says there are three crucial factors that no-tillers need to have right before diving into the management strategies outlined in his famous “7 Wonders of the Corn Yield World.”
Researchers at Washington State University Extension weigh in on the need and economic realities of liming soils in the northwestern U.S. as pH levels continue to drop and affect crop health.
If soils are too acidic, phosphorus reacts with iron and aluminum, making it unavailable to plants. But if soils are too alkaline, phosphorus reacts with calcium and also becomes inaccessible. However, liming can influence other ways by which phosphorus might become available to plants.
Brian Arnall and Misha Manucheri from Oklahoma State University Extension discusses how soil pH, or the amount of hydrogen (H) ions present in the soil solution, affects the persistence and uptake of a herbicide that has soil activity.
Judging from the number of calls received this year, the decrease of soil pH and increase in acres affected by aluminum (Al) toxicity is increasing in North Dakota and the region.
Source: American Society of Agronomy, Soil Science Society of America, Crop Science Society of America
Soil gets tired. After years of supporting a rotating cast of crops, the soil’s nutrient supply is often exhausted. The tilling, turning, and planting also degrade the organic matter in the soil and its ability to stay hydrated.
With many farms experiencing excessive rains and saturated soil in 2017, Michigan State University Extension discusses how much nitrogen may have been lost through denitrification or leaching, and what to do about it.
Corn is usually the main focus of a grower’s fertility program, but no-tillers should pay just as much attention to their soybeans by knowing their soil quality and understanding nutrient availability.
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On this episode of Conservation Ag Update, brought to you by Martin-Till, Brian and Darren Hefty, fourth-generation farmers and hosts of Ag PhD, share tips for treating tar spot in corn.
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