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What is soil organic matter?

Soil organic matter is the fraction of the soil composed of anything that once lived. It includes plant and animal remains in various states of decomposition, cells and tissues of soil organisms, and substances from plant roots and soil microbes. Well- decomposed organic matter forms humus, a dark brown, porous, spongy materia that has a pleasant, earthy smell. Mississippi soils generally are less than 2 percent organic matter. (from National Soil Survey Center et al.)

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News

Soil testing boxes full of soil waiting to be tested.
Filed Under: Agriculture, Soils, Soil Acidity, Soil Fertility, Soil Health, Soil Testing, Lawn and Garden, Turfgrass and Lawn Management September 21, 2023

Early fall is one of the best times to test your soil. A soil test can tell you if your lawn or garden needs critical nutrients and how much. This way, your plants and your wallet will stay healthy. You won’t waste your money applying fertilizer or lime that your plants don’t need.

A woman works in a laboratory.
Filed Under: Sweet Potatoes, Soil Testing, Plant Disease and Nematode Diagnostic Services March 23, 2023

Sweet potato growers in Mississippi can get free nematode testing of soil samples they send to Mississippi State University from now until Dec. 31, 2024. The samples can be submitted in nematode bags available at local county MSU Extension Service offices; samples are also accepted in quart-sized, sealed plastic bags.

A tractor with a boom arm sprays crops.
Filed Under: Agricultural Economics, Crops, Soil Fertility March 6, 2023

STONEVILLE, Miss. -- Agricultural producers hoping for some relief from recent high fertilizer prices are not likely to find it in 2023.

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