Definition of Hardpan. Meaning of Hardpan. Synonyms of Hardpan

- gardening, hardpan or soil pan is a dense layer of soil, usually found below the uppermost topsoil layer. There are different types of hardpan, all sharing...
- vernal pools have an underlying impermeable clay layer (also known as a hardpan) that reduces water percolation. The impermeable layer is hydrophobic and...
- restrictions ****ociated with having a shallow hardpan soil, as the tillage radish can break the hardpan, making the transfer of water and other important...
- Joaquin soils formed in old alluvium on hummocky topography. A cemented hardpan a few feet beneath the surface restricts roots and water percolation. San...
- More than one quarter of Kahoʻolawe has been eroded down to saprolitic hardpan soil, largely on exposed surfaces near the summit. Historically, Kahoʻolawe...
- a garden tool used to manually break up densely packed soil, including hardpan, to improve aeration and drainage. Broadforks are used as part of a no-till...
- over nearby low-lying areas. When the lakes dry up, they leave a crust or hardpan behind. This area of deposited clay, silt or sand is known as a playa....
- combination of ferruginous and concrete. Synonyms include ferruginous duricrust, hardpan and ironpan. Ferricrete deposits along the Animas River watershed in Colorado...
- infertile lower soil layers that bake in the sun and become an unproductive hardpan. This spread of arid areas is caused by a variety of factors, such as overexploitation...
- marshy deposits of black clays. The sands are underlain by calcareous hardpan. In Rameswaram Island also brown sand deposits occur around Sambaimadam...