Author Archives: Allan Fulton

About Allan Fulton

Allan Fulton is a University of California Cooperative Extension Irrigation and Water Resource farm advisor for Tehama County.

Understanding and Applying Information from a Soil Test, Part 4: Boron, Chloride, Copper, Iron, Manganese, Molybdenum, Nickel, and Zinc

Allan Fulton, UC Farm Advisor, Tehama County and Roland D. Meyer, Extension Soil Specialist Emeritus This article (Part 4) discusses micronutrients and the use of soil tests to evaluate their levels in orchard soils.  Micronutrients are essential to almonds and other nut crops, yet are required in much smaller amounts than macronutrients such as nitrogen […]

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Understanding and Applying Information from a Soil Test, Part 3: Secondary Plant Nutrients: Calcium (Ca), Magnesium (Mg), and Sulfur (S)

Written by Allan Fulton, Farm Advisor, Tehama County and Roland D. Meyer, Extension Soils Specialist Emeritus This article (Part 3) discusses the use of soil tests to evaluate levels of the secondary nutrients calcium (Ca), Magnesium (Mg), and sulfur (S) in orchard soils.  It is a follow up to a series of articles on intrpretation […]

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Q&A: Evaluating a Water Supply for Suitability to Irrigate Nut Crops

After receiving the results of a water analysis, there are several components that need to be reviewed to determine suitability of the water for the planted crop. If the water does not meet the expected suitability range, it may require ammendments (e.g. gypsum or acid) or mixing with other water sources to prevent crop loss. Below are […]

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Understanding and Applying Information from a Soil Test: Part 2 – NPK

Part 1 of this series emphasized that soil testing is complementary to plant tissue testing and not a substitute in orchard management.  Considerations to ensure soil testing provides representative and useful information and interpretation of two common soil test parameters: 1) Saturation Percentage (SP); and 2) pH were also discussed.   This article will focus on […]

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