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Crop Response to Potassium Fertilizer in Ohio
https://agcrops.osu.edu/newsletter/corn-newsletter/2024-04/crop-response-potassium-fertilizer-ohio
of yield penalty with no K application decreases as soil K levels go above 100 ppm. If the soil test ... (2023) classified Mehlich-3 soil K levels into <70, 70-100, 100-130, 130-160, and >160 ppm to ... yield, the higher the yield increase from K fertilizer. Generally, as the soil test K levels decreased, ...
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Spring Forage Establishment
https://agcrops.osu.edu/newsletter/corn-newsletter/2024-08/spring-forage-establishment
Recommendations (https://forages.osu.edu/forage-management/soil-fertility-forages). Phosphorus levels for grass ... are optimal in the 20-40 ppm range, while the range for legumes is 30-50 ppm. When it comes to ... potassium the optimal range is 100-130 ppm for sandy soils with a CEC less than 5, for loam and clay soils ...
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Crop Response to Phosphorus Fertilizer in Ohio
https://agcrops.osu.edu/newsletter/corn-newsletter/2024-03/crop-response-phosphorus-fertilizer-ohio
soil P levels go above 20 ppm. If the soil test P level is less than 20 ppm, there is an increased risk ... less than 10 ppm, the median relative yield was 87%. As the soil test P level increased above the ... the Mehlich-3 soil test P level. The Mehlich-3 soil P measures the readily available soil P for crop ...
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Spring 2024 Weather & Soil Conditions: Update 3
50s and 60s on Thursday and Friday. High pressure will slowly take control over the weekend into early ... Soil Temperatures and Moisture Daily average soil temperatures jumped 5-10°F this week due to ... warmer conditions, randing from the low 50s in Ashtabula to as warm as 57°F at Western in Clark County ...
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FRST Fertilizer Recommendation Support Tool Launches Nationwide to Digitize Crop Nutrient Management
Recommendation Support Tool), a decision-aid that provides an unbiased, science-based interpretation of soil test ... harmonize soil testing across state boundaries. It represents an improvement in our ability to evaluate soil ... test correlation.” The new web-based tool represents a significant advancement in soil testing for ...
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Wheat Management for Spring 2024
https://agcrops.osu.edu/newsletter/corn-newsletter/2024-10/wheat-management-spring-2024
prior to or during Feekes 5.0 with 2,4-D and other labeled herbicides. This is also a good stage to ... visible above the soil surface and is commonly referred to as ‘jointing.’ Above this node is the head or ... https://www.youtube.com/watch?v=D_f3VrqzV5c&list=PLYlh_BdeqniJ8oD8TnyGhQHRd96ptV0Yt&index=1 Most herbicide applications should be made by the time wheat enters the Feekes 6 growth stage. ...
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OSU Deoxynivalenol, DON, Resistance Screening Program-2024
and consistently lower DON levels are easier to keep low than those that were highly susceptible. ... temperatures between 59 ° F and 86 ° F. Table 1 below summarizes the DON ppm as an average across locations ... lowest average DON level. The variability among some of the hybrids with high DON levels led to high ...
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Look Out for Nitrogen Loss Due to Heavy Rains
https://agcrops.osu.edu/newsletter/corn-newsletter/2024-09/look-out-nitrogen-loss-due-heavy-rains
N fertilizer was applied recently in such fields, especially without incorporation into the soil, there is high ... from Recent Storms Determine N in the soil: Pre-Sidedress Nitrogen test (PSNT) can be done to quantify ... N would be needed in this article: Estimated and Soil Test Methods to Determine Supplemental N need after ...
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Alfalfa Weevil Activity is Beginning to Peak
https://agcrops.osu.edu/newsletter/corn-newsletter/2024-10/alfalfa-weevil-activity-beginning-peak
days (GDD) and reaches their peak feeding and damage when heat units for the area are between 325 and ... 1 Recheck in a week 9 50 >1 Spray 12 75 >2 Spray 16 100 >4 Harvest early If alfalfa weevil ... pressure is high in a stand that is still short a pesticide treatment may be warranted. Consult the OSU and ...
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Spring 2024 Weather & Soil Conditions: Update 2
Figure 1: Daily average air temperature (dashed red), two-inch (green) and four-inch (blue) soil ... temperatures for spring 2024. Soil type and location of measurements (under sod or bare soil) are provided in ... located throughout the state. Daily average soil temperatures remained steady or fell slightly for most ...