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  1. Wheat Management for Fall 2021

    https://agcrops.osu.edu/newsletter/corn-newsletter/2021-30/wheat-management-fall-2021

    phosphorus than corn or soybean, and soil test levels should be maintained between 30-50 ppm (Mehlich-3 P) ... for optimum production (Table 1). Do not add any phosphorus if soil test levels are higher than 50 ... 45 60 75 >50 0 0 0 0 Soil potassium should be maintained at levels of 100-130 and 120-170 ppm ...

  2. Grapevine Nutrient Management: Petiole Sampling and Analysis

    https://ohioline.osu.edu/factsheet/hyg-1438

    availability. However, there is a poor relationship between soil and plant nutrient levels. While a soil may be ... adequate levels of another nutrient while the soil test indicates a deficiency. This poor relationship may ... Manganese (Mn) 25–1,000 ppm 3 31–150 ppm Iron (Fe) 30–100 ppm 31–50 ppm Copper (Cu) 5–15 ppm 5–15 ppm Boron ...

  3. Fall Soil Fertility Sampling

    https://agcrops.osu.edu/newsletter/corn-newsletter/2021-37/fall-soil-fertility-sampling

    inputs. If soil test P and soil test K levels are within the maintenance range it is extremely unlikely ... limitations and strengths (Figure 1). Zone and grid soil sampling will provide the highest level of ... information from soil test results as fields can have a great deal of variability of soil test P, K, and pH ...

  4. Interpreting a Soil Test Report

    https://ohioline.osu.edu/factsheet/AGF-514

    Soil test values may be reported in parts per million (ppm) or pounds per acre (lb/ac). To convert from ... ppm to lb/ac, multiply ppm by two. Phosphorus, potassium, calcium, and magnesium soil test values are ... 250–310 125–155 CEC=30 meq/100g 300–360 150–180 Calcium (Ca) 800–16,000 400–8,000 Levels less than 200 ppm ...

  5. Jack Frost Will Bite Soon- Precautions for Feeding Frosted Forages

    https://agcrops.osu.edu/newsletter/corn-newsletter/2021-36/jack-frost-will-bite-soon-precautions-feeding-frosted-forages

    affect poisoning risk. Plants growing under high nitrogen levels or in soils deficient in phosphorus or ... risk of toxicity: Grain sorghum = high to very high toxic potential Indiangrass = high toxic potential ... dangerously high in prussic acid. Drought stress can affect prussic acid poisoning risk. Drought-stunted ...

  6. Calculating Cation Exchange Capacity, Base Saturation, and Calcium Saturation

    https://ohioline.osu.edu/factsheet/anr-81

    example of typical soil test levels in Ohio (in ppm). We can calculate the collective charge each cation ... by the soil test levels. For calcium, a soil test level of 2000 ppm, divided by 200 equals 10.0 ... (ppm) to meq/100 g soil for base and acid cations to determine CEC. Base Cation Soil test level (ppm ...

  7. Lime and the Home Lawn

    https://ohioline.osu.edu/factsheet/hyg-4026

    For turfgrasses used in Ohio home lawns, a soil pH between 6.0 and 7.0 (slightly acidic) is ideal. ... in an immediate and dramatic change to soil pH levels or the health of turfgrass plants. Homeowners ... or not liming is needed, and how much lime to apply, is through the results of a soil test conducted ...

  8. Phosphorus Nutrient Management for Yield and Reduced P Loss at Edge of Field

    https://ohioline.osu.edu/factsheet/agf-509

    site and rate criteria from Assessing Nutrient Loss Risk in Ohio (NRCS) between 50 to 200 PPM. Time ... step 7. STP value of 50 PPM Mehlich III or less: CROP YIELD —Reduce risk of crop yield losses with ... available. The maintenance STP range is "critical level" to 40 PPM in corn soybean rotation and 50 ...

  9. Ever-Evolving Aspects of Cannabis Production

    https://ohioline.osu.edu/factsheet/anr-99

    recreational status. Even though marijuana continues to be illegal at the federal level due to its high ... concentration goes beyond 0.3%. For obvious reasons, high tunnel and greenhouse operations face lower ... overall success of any cannabis production effort. Hemp programs overseen by state-level agencies also ...

  10. Extension Today: Fall Lawn Care

    https://extension.osu.edu/today/extension-today-fall-lawn-care

    throughout the year. Why should I test my soil –  and for what?  Soil tests provide more helpful information ... on soils than any other resource. Testing is an inexpensive way to maintain good plant health in ... lawns and landscapes, and to maximize productivity of vegetable gardens and fruit crops. Soil test ...

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