humus


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humus

the organic material that is derived from the breakdown of plant and animal material occurring in the surface layers of the soil. Humus is black and colloidal in nature, coating the soil particles and improving the fertility of soil in several ways:
  1. in acting as a reservoir of numerous nutrients which it prevents from leaching deeper into the soil layers;
  2. in increasing the water holding capacity of the soil and
  3. in improving the soil texture (friability).
References in periodicals archive ?
However, if soluble materials -- potential ground water pollutants such as ammonium nitrate -- are placed on top of the clamp and the chemistry of the whole balanced, biological activity will literally eat the soluble and available nutrients first and turn them into microbial tissue or humus.
I scrape at the mulch, peeling it away from the underlying humus with my fingers.
Worn-out tires would biodegrade into the soil as humus and nutrients.
This article is based on materials published by different scientific schools on the fabric and properties of humus forms (Wilde, 1971; Karpachevskij, 1982; Zonn, 1983; AFES, 1998; IUSS, 2007; Galvan et al.
Moreover, the smoothness of the Humus with the crunch of the fresh peppers made it a successful, one-of-a-kind dish.
Se tuvo como fin, establecer variaciones en el biosolido inicial y el humus resultante (en el proceso de vermicompostaje planteado), se evaluaron las mejoras en las condiciones del sustrato, en sus caracteristicas fisicoquimicas de las concentraciones de MO, macro y micro elementos, segun lo establecido por la norma NTC 5167 (Instituto Colombiano de Normas Tecnicas y Certificacion --ICONTEC, 2004).
Mediterranean Delicacies humus, together with a wide range of other dips, salads, fish, pickles and cheeses, is available at all leading retailers.
Compost fertilisation regularly leads to a distinctive increase in the humus content of the soil (Diez and Krauss 1997; Stopplcr-Zimmcr and Petersen 1997; Timmermann et al.
Por tal motivo, el presente trabajo ha sido realizado como un aporte para el manejo agroecologico de esta especie en el pais, evaluando el efecto de la fertilizacion foliar organica con humus liquido de lombriz (Eisenia foetida) sobre variables vegetativas de la morera durante la etapa inicial de crecimiento en vivero.
BEL--sub-eluvial, 40-58/18 cm; consists of colour combinations: huge pale-yellow stains, dark-grey humus leaks, at the bottom there are ginger-brownish salients; wetting; the structure is cloddy-nuciform; of high density; there is vertical parting; slightly sticky; light-clayey; there are not many roots; the transition to the next horizon is even/flat/level and gradual.
This problem has come up due to the fact that intensification of farming is accompanied by increase in yields of crops, at this nutrients removal from soil is growing, humus decomposition is intensified and content of humus and soil fertility are reduced.
A similar kind of dependence is presented in another paper [3], where the connection of humus soil horizon from the annual amount of precipitation (in the range of 300-1700 mm) and hydrothermal coefficient is set.