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  2. Soil sealing - Wikipedia

    en.wikipedia.org/wiki/Soil_sealing

    Soil sealing or soil surface sealing is the loss of soil resources due to the covering of land for housing, roads or other construction work. [1] Covering or replacing the topsoil with impervious materials like asphalt and cement as a result of urban development and infrastructure construction paired with compaction of the underlying soil layers results in the mostly irreversible loss of ...

  3. Purdue Improved Crop Storage bags - Wikipedia

    en.wikipedia.org/wiki/Purdue_Improved_Crop...

    Purdue Improved Crop Storage (PICS) bags (formerly known as Purdue Improved Cow-pea Storage bags) [1] are bags developed by scientists at Purdue University [2] to store grain and seeds. They use hermetic storage technology to reduce loss of post-harvest cowpea ( Vigna unguiculata ) due to bruchid infestations in West and Central Africa .

  4. Growbag - Wikipedia

    en.wikipedia.org/wiki/Growbag

    Planting is undertaken by first laying the bag flat on the floor or bench of the growing area, then cutting access holes in the uppermost surface, into which the plants are inserted. Growbags were first produced in the 1970s for home use, but their use has since spread into market gardening and farming .

  5. Soil regeneration - Wikipedia

    en.wikipedia.org/wiki/Soil_regeneration

    Soil regeneration, as a particular form of ecological regeneration within the field of restoration ecology, is creating new soil and rejuvenating soil health by: minimizing the loss of topsoil, retaining more carbon than is depleted, boosting biodiversity, and maintaining proper water and nutrient cycling. [1]

  6. Topsoil - Wikipedia

    en.wikipedia.org/wiki/Topsoil

    Topsoil is composed of mineral particles and organic matter and usually extends to a depth of 5-10 inches (13–25 cm). Together these make a substrate capable of holding water and air which encourages biological activity.

  7. Proctor compaction test - Wikipedia

    en.wikipedia.org/wiki/Proctor_compaction_test

    The original Proctor test, ASTM D698 / AASHTO T99, uses a 4-inch-diameter (100 mm) by 4.584-inch-high (116.4 mm) mold which holds 1/30 cubic feet of soil, and calls for compaction of three separate lifts of soil using 25 blows by a 5.5 lb hammer falling 12 inches, for a compactive effort of 12,375 ft-lbf/ft 3.

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