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Decagon Devices, Inc.
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We Measure the World
We Measure the World

63 followers
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Estimating the relative humidity in soil? Most people do it wrong, every time. Dr. Gaylon Campbell shares a lesson on how to correctly estimate soil relative humidity from his new book, "Soil Physics with Python." Read more:

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Take your soil moisture release curve further with high resolution data. With the Vapor Sorption Analyzer it is now possible to understand soil processes like cation-exchange and shrink-swell capacity. Understand more with automated measurements over several hundred data points along the dry end of the release curve.

http://www.decagon.com/en/soils/benchtop-instruments/vapor-sorption-analyzer/

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Want to increase yield and implement money saving irrigation practices? Stop by and see us today and tomorrow at the World Ag Expo in Pavilion B, booth 2428. 
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Climate change is predicted to alter rainfall patterns. It isn’t clear how this might affect rangeland plants and the animals that rely on them for food. Researchers at UC Berkeley are working on finding answers. Their findings reveal some of the complexities involved in predicting ecosystem response to climate change. Read more…

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Be confident in your irrigation decisions. Optimize irrigation by using ET and soil moisture measurements. Stop by and see us today through Friday at Fruit Logistica.
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In addition to an accurate sensor, accurate air temperature measurement requires proper shielding and ventilation of the sensor. Read more:

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Rain, shine or otherwise, product testing and development still moves forward. Ryan Campbell braves the snow to test some of our instruments.
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People assume they can use a static louvered radiation shield along with a temperature sensor and start measuring accurate air temperature. That assumption is good, if you are at a site where the wind blows all the time. However, if the wind at your field site is less than 3 m/s, you’re going to see errors due to solar heating. Read more:

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"Under current conditions, about 4% of the world’s croplands experience drought in any given year, but by the end of the century those conditions are projected to jump to about 18% per year. Some studies indicate that horticulture crops – generally, everything besides staples – may be impacted most severely, largely because they tend to be constrained to a smaller geographic area."

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The WP4C Dewpoint Hygrometer is a fast, accurate, way to measure water potential in any porous material. Typically used to analyze soil, soilless substrates, plant material and seeds, it has been used to measure a variety of unusual things, including apples, bricks and even insect carapaces. http://www.decagon.com/en/soils/benchtop-instruments/wp4c-water-potential-meter/
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