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In agriculture, mulch tillage (or mulch-till) is a seeding method where a hundred percent of the soil surface is disturbed by tillage, [1] crop residues are mixed with the soil and a certain amount of residues remain on the soil surface. A great variety of cultivator implements are used to perform mulch-till.
[citation needed] According to voluntary guidelines published by the Mulch and Soil Council, a trade group of mulch and soil producers, a material with "bark" in the name should consist of "the corky exterior covering of trees, with a maximum wood content (interior xylem of 15%)". Products with greater than 15% wood content may be labelled as ...
Mulch-till - Soil is covered with mulch to conserve heat and moisture. 100% soil disturbance. Rotational tillage – Tilling the soil every two years or less often (every other year, or every third year, etc.). [11] Ridge-till [further explanation needed]
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The effect of mulch upon soil moisture content is complex. Mulch forms a layer between the soil and the atmosphere reducing evaporation. [11] However, mulch can also prevent water from reaching the soil by absorbing or blocking water from light rains and overly thick layers of mulch can reduce oxygen in the soil. [12]
In agriculture, a living mulch is a cover crop interplanted or undersown with a main crop, and intended to serve the purposes of a mulch, such as weed suppression and regulation of soil temperature. Living mulches grow for a long time with the main crops, whereas cover crops are incorporated into the soil or killed with herbicides.