Solvita is a leading commercial test worldwide for soil CO2 respiration (and compost maturity) and is often in comparisons with newer soil respiration methods vying for market share. Such is the case in a recent study by Oklahoma State University which proposed a semi-automatic Gas Chromatography (GC) method for soil respiration. The team, under Jason Warren, Associate Professor and Soil Management Extension Spec
Solvita announced quantitative recovery of nitrate nitrogen via a one-step chemistry conversion, using a Solvtia SLAN probe, “a small feat of basic chemistry” says inventor Brinton. The Solvita SLAN test normally detects ammonia, ammonium and amines released when soil is treated with an alkaline extract. “Its important for soil fertility assessment” says Brinton, “since accumulation of soil organic nitrogen is a
Have you wondered if limestone in soil can affect a CO2-respiration test? Or, what the difference is in measuring soil respiration for 1-day “CO2-Burst” versus 3 or 7-days? Many of these questions are topics of a series of short, technical memos on the theme of Solvita testing prepared by Dr. Will Brinton and staff of Woods End Laboratories. While the memos are fairly scientific they are meant for a ge
Woods End Laboratories has announced the release of Solvita VAST (Volumetric Aggregate Stability Test), a rapid laboratory method for measuring water-stable soil aggregates. The new product was created to help soil labs complete the soil health test triangle, which evaluates physical in additon to biological and chemical components of the soil and typifies soil health testing. “The innovative Solvita VAST m
Scientists critical of soil health testing often stress absolute differences between soil labs performing tests. But what about ranking? Rank-Order statistics focus not on the absolute numbers but on whether labs are similarly distinguishing one type from others, an essential aspect. Now, recent farmer comparisons of soil health tests sent to differing labs give strong evidence that this is key. Despite numerical
When organic amendments such as manure or compost are soil applied it is difficult to predict response using ordinary soil tests. Several recent research projects have shed more light on intrinsic nutrient potential of natural fertilizers. The projects all employed Solvita tests including CO2-Burst and SLAN along with other conventional tests, and explored relationships to PMN and yields. Results clearly show that
To have robust soil health your soil must first meet certain criteria for microbial activity. You can be a marathoner but your exercise regime, rest schedule and nutrition has to be right to succeed. The same applies to microbial activity. The home of microbes is the soil environment which must be suitable for them to flourish. And the quality of specific components determines the integrity of this house. Discussi
I like the analogy of an engine when talking about soil health. What is the size of your soil engine? Have you checked lately? Just like you use a dynamometer to measure the horsepower on a tractor you can use Solvita soil respiration to measure the horsepower of your soil.
The Solvita SLAN test has been gaining steadily as word of mouth, research trials and farmer reports show that organic-bound Nitrogen – the kind revealed by the SLAN test- is of real practical significance.