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Have the soil sample analyzed by a testing lab using appropriate methods and quality control standards. See the appropriate soil testing methods for Oregon in Tables 1 and 2. Compare the test results to calibrated crop responses to determine fertilizer requirements.
Historical soil test calibration data in Oregon have been developed in relation to two specific phosphorus extractions methods: the Bray P1 test and the Olsen or sodium bicarbonate test (table 2). The Bray P1 extraction method is used for soils west of the Cascade Mountain Range, and the Olsen sodium bicarbonate (NaHCO 3 ) extraction method is ...
Table 1. OSU-recommended soil test methods. Soil pH: 1:2 soil pH. Buffer phH for lime requirement: Sikora or SMP method. Extractable phosophorous: Olsen extraction (for alkaline soils, primarily in Eastern Oregon or Bray P1 extraction (for acidic soils, primarily in Western Oregon)
Commercial. growers, gardeners, and home-owners use soil, plant, and water analyses to help them make decisions about the use of soil amendments and other management actions. Home- and business owners may also wish to test drinking water quality.
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The soil test ranges in Tables 3, 4, and 5 are for the ammonium acetate extraction method. If a sodium bicarbonate (NaHCO 3) extraction is used, test values may be slightly lower. Potassium (K) Excessive soil potassium levels can result in elevated K levels in grass forage crops, which may be detrimen-tal to animal health.
Video on OSU Soil Testing & Interpretation (Lane County Master Gardeners) Turnaround Times. Basic and advanced nutrient analyses of garden and grower-scale submission size are generally completed in 4 - 5 weeks once samples are received in the lab.
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May 10, 2021 · Asked May 10, 2021, 7:26 PM EDT. Hello, how and where can I get my soil tested? I am from La Grande, OR (Union Co). Union County Oregon. Expert Response. Greetings, Thank you for reaching out. Below are three resources that will help guide your soil testing process.
