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lawfarms

Posted 8/11/2013 17:29 (#3261350 - in reply to #3260859)
Subject: Lots of data here

King City, Mo

So I got to wondering and reading and reading this info.

Looks how the roots span out....if you place it roots will get there? Too little too late?

Other notes from my reading:
Ammomia sulfate only accounts for 2% of all N fertilizer sold in the us....
Ammomia sulfate is (NH4)2SO4

Soil organic matter

Nutrient Supply. Upon decomposition, nutrients are released in a plant-available form. While maintaining current levels. Each percent of SOM in the top 6 inches (15.2 cm) of a medium textured soil (silt and loam soils with a bulk density of 1.2) releases about 10-20 pounds of nitrogen, 1 to 2 pounds of phosphorus, and 0.4 to 0.8 pounds of sulfur per acre per year.

SOM - soil organic matter

An acre of soil 6 inches (15.2 cm) deep weighs approximately 2,000,000 pounds, which means that 1 percent SOM weighs about 20,000 pounds per acre. Under average conditions it takes at least 10 pounds of organic material to decompose into 1 pound of organic matter, so it takes at least 200,000 pounds (100 tons) of organic material applied or returned to the soil to add 1 percent stable organic matter under favorable conditions.

http://soils.usda.gov/sqi/assessment/files/OM_guide.pdf

Edited by lawfarms 8/11/2013 17:37