Nutrient Management

Figure 1. Forecast size of the low-oxygen dead zone (black dots, 2022 in red), compared with observations from 1985–2021. The reduction goal is 1,930 mi2. Asterisks indicate years with atypical high winds prior to the measurement cruise; forecasts assume normal weather conditions (NOAA, 2022).

Gulf of Mexico hypoxia 2022: What’s the role of plant nutrition?

August 5, 2022

Clockwise from top: collecting a Walla Walla silt loam soil, removing moisture from biosolid samples in a drying oven, mixing biosolids with soil for incubation, extracting sulfate with calcium phosphate, incubating biosolid-treated soils, and grinding biosolids with a Wiley mill.

Considering biosolids as a sulfur nutrient source

June 8, 2022

The application of nutrients, particularly N, is associated with greenhouse gas emissions. Thus, if we are going to apply N inputs to enhance the capacity of a system to store N in the soil, a full analysis of the greenhouse gas balance is needed. Photo courtesy of Adobe Stock/chas53.

Soil carbon needs 4R nutrients

May 31, 2022

Photo by Draw05/Shutterstock

Can banding reduce phosphorus rates and environmental losses?

April 29, 2022

The nitrogen industry seeks to reduce its carbon footprint. Photo courtesy of The Fertilizer Institute.

Climate-smart fertilizers in 4R nutrient stewardship

April 15, 2022

Photo by Paul McDivitt/University of Minnesota Extension.

The MRTN approach to making nitrogen rate recommendations: Background and implementation

February 23, 2022

Figure 1. State-level phosphorus balance for the 2016 crop year compared with median soil test phosphorus in 2020. Surpluses can be appropriate for low-testing soils, and conversely deficits for high-testing soils. In some instances, for example the state of Maine, the surplus may be driven by the high phosphorus needs of a particular crop, in this case, potatoes. Data from NuGIS (TFI, 2021a) and Soil Test Summary (TFI, 2021b); states with fewer than 10,000 soil test samples were excluded.

Evaluating impacts of 4R nutrient stewardship

February 17, 2022

Sharing data on 4R practices can boost public confidence in farming outcomes.

Nutrient stewardship: Taking 4R further

December 27, 2021

Figure 1, Hydraulic probe in truck cab to sample soil to 24 inches.

Drought demonstrates value of fall soil nitrate-nitrogen testing in the Northern Great Plains

December 27, 2021

Opposite page: Plants with insufficient chloride show chlorotic and necrotic spotting along leaves with abrupt boundaries between dead and live tissue. Leaves wilting at margins and highly branched root systems are also typical chloride deficient symptoms, found mainly in cereal crops (Mengel & Kirkby, 2001). Chloride deficiencies are highly cultivar-specific and can be easily mistaken for leaf diseases.

Chloride deficiency and toxicity can be a real problem

December 27, 2021

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