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2. Drainage - Wikipedia

   en.wikipedia.org/wiki/Drainage

   Point drainage, which intercepts water at gullies (points). Gullies connect to drainage pipes beneath the ground surface, so deep excavation is required to facilitate this system. Support for deep trenches is required in the shape of planking, strutting or shoring. Channel drainage, which intercepts water along the entire run of the channel.

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4. Tile drainage - Wikipedia

   en.wikipedia.org/wiki/Tile_drainage

   Tile drainage is a form of agricultural drainage system that removes excess sub-surface water from fields to allow sufficient air space within the soil, proper cultivation, and access by heavy machinery to tend and harvest crops.

5. Drainage system (agriculture) - Wikipedia

   en.wikipedia.org/wiki/Drainage_system_(agriculture)

   The checked surface drainage systems consist of check gates placed in the embankments surrounding flat basins, such as those used for rice fields in flat lands. These fields are usually submerged and only need to be drained on certain occasions (e.g., at harvest time). Checked surface drainage systems are also found in terraced lands used for ...

6. Land drains - Wikipedia

   en.wikipedia.org/wiki/Land_drains

   The earliest type consisted of a "u" shaped trough onto which a flat lid was placed. Later the extruded clay pipe was developed. These are still used. These can be laid in an excavated trench, or a horizontal hole is formed in the ground using a mole plough and the pipes are forced in by means of a hand or mechanical press. By this means, heavy ...

7. Planter (farm implement) - Wikipedia

   en.wikipedia.org/wiki/Planter_(farm_implement)

   Planters lay the seeds down in precise manner along rows. Planters vary greatly in size, from 1 row to 54, with the biggest in the world being the 48-row John Deere DB120. Such larger and newer planters comprise multiple modules called row units. [1] The row units are spaced evenly along the planter [1] at intervals that vary widely by crop and ...