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Base-cation saturation ratio (BCSR) is a method of interpreting soil test results that is widely used in sustainable agriculture, supported by the National Sustainable Agriculture Information Service (ATTRA) [1] and claimed to be successfully in use on over a million acres (4,000 km 2) of farmland worldwide.
Soil testing in progress. Soil testing is often performed by commercial labs that offer a variety of tests, targeting groups of compounds and minerals. Laboratory tests often check for plant nutrients in three categories: Major nutrients: nitrogen, phosphorus, and potassium; Secondary nutrients: sulfur, calcium, magnesium
Specific benchmarks used to evaluate soil health include CO 2 release, humus levels, microbial activity, and available calcium. [7] Soil health testing is spreading in the United States, Australia and South Africa. [8] Cornell University, a land-grant college in NY State, has had a Soil Health Test since 2006.
Acidic, sandy, or coarse soils often contain less calcium. Uneven soil moisture and overuse of fertilizers can also cause calcium deficiency. At times, even with sufficient calcium in the soil, it can be in an insoluble form and is then unusable by the plant or it could be attributed to a "transport protein". [2]
Cation-exchange capacity (CEC) is a measure of how many cations can be retained on soil particle surfaces. [1] Negative charges on the surfaces of soil particles bind positively-charged atoms or molecules (cations), but allow these to exchange with other positively charged particles in the surrounding soil water. [2]
Limit Calcium. An imbalance of nutrients in the soil can create disorder and impact whether other minerals are available or accessible. ... Soil test kits are available but aren't the best option ...
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