enow.com Web Search

  1. Ads

    related to: how thick should topsoil be

Search results

  1. Results from the WOW.Com Content Network
  2. 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.

  3. Solum - Wikipedia

    en.wikipedia.org/wiki/Solum

    The solum of a soil is not necessarily confined to the zone of major biological activity. A solum does not have a maximum or a minimum thickness. The lower limit should relate to the depth of rooting to be expected for perennial plants assuming that soil moisture conditions and soil chemistry are not limiting. In some soils the lower limit of ...

  4. USDA soil taxonomy - Wikipedia

    en.wikipedia.org/wiki/USDA_soil_taxonomy

    About 1,000 soil subgroups are defined in the United States. [6] A soil family category is a group of soils within a subgroup and describes the physical and chemical properties which affect the response of soil to agricultural management and engineering applications. The principal characteristics used to differentiate soil families include ...

  5. Soil morphology - Wikipedia

    en.wikipedia.org/wiki/Soil_morphology

    The three sections should add up to 100% in order for the test to be considered successful. Laser diffraction analysis can also be used as alternative to the sieving and hydrometer methods. [13] From here, the soil can be classified using a soil texture triangle, which labels the type of soil based on the percentages of each particle in the sample.

  6. Hardpan - Wikipedia

    en.wikipedia.org/wiki/Hardpan

    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 .

  7. My house didn't burn but ash from the L.A. fires fell in my ...

    www.aol.com/news/house-didnt-burn-ash-l...

    A light dusting of ash probably won't do much damage to your soil, said Wallace, but a thick layer could raise the alkaline levels above eight, making it difficult for plants to grow, and lace the ...

  8. Unified Soil Classification System - Wikipedia

    en.wikipedia.org/wiki/Unified_Soil...

    The Unified Soil Classification System (USCS) is a soil classification system used in engineering and geology to describe the texture and grain size of a soil. The classification system can be applied to most unconsolidated materials, and is represented by a two-letter symbol. Each letter is described below (with the exception of Pt):

  9. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  1. Ads

    related to: how thick should topsoil be