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The purpose of deep plowing is to modify the soil water retention characteristics over the long term. [1] In one long-term test, lasting 35 years, the mean annual grain yield was 2,800 lbs per acre (3,138 kg per ha) with deep plowing, which was 10% greater than the 2,550 lbs per acre (2,858 kg per ha) yield in unplowed plots. [ 1 ]
The Soil Conservation Service worked with state governments and universities with established agriculture programs, such as the University of Nebraska, to promote the method to farmers. By 1938, the introduction of new agricultural techniques, such as contour plowing, had reduced soil loss by 65% despite the continuation of the drought.
In soil science, agriculture and gardening, hardpan or soil pan is a dense layer of soil, usually found below the uppermost topsoil layer. [1] There are different types of hardpan, all sharing the general characteristic of being a distinct soil layer that is largely impervious to water .
A plough or plow (both pronounced / p l aʊ /) is a farm tool for loosening or turning the soil before sowing seed or planting. [1] Ploughs were traditionally drawn by oxen and horses but modern ploughs are drawn by tractors. A plough may have a wooden, iron or steel frame with a blade attached to cut and loosen the soil.
shows a tractor plowing a crop field Worker overseeing cotton gin, ca. 1940s Agriculture is a major industry in the United States , which is a net exporter of food. [ 1 ] As of the 2017 census of agriculture , there were 2.04 million farms, covering an area of 900 million acres (1,400,000 sq mi), an average of 441 acres (178 hectares) per farm.
The immense pulling power of steam tractors allowed them to be used for plowing as well. Certain steam tractors were better suited for plowing than others, with the large Minneapolis Threshing Machine Co., J.I. Case, Reeves & Co., and Advance-Rumely engines being prime examples. Some of the largest steam tractors, such as the 150 horsepower ...
In Argentina the usage of no-till resulted in reduction of soil erosion losses by 80%, cost reductions by more than 50% and increased farm incomes. [16] In Brazil the usage of no-till resulted in reduction of soil erosion losses by 97%, higher farm productivity and income increase by 57% five years after the starting of no-till farming. [16]
Eroded hilltops due to tillage erosion. Tillage erosion is a form of soil erosion occurring in cultivated fields due to the movement of soil by tillage. [1] [2] There is growing evidence that tillage erosion is a major soil erosion process in agricultural lands, surpassing water and wind erosion in many fields all around the world, especially on sloping and hilly lands [3] [4] [5] A signature ...