humus


Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia, Wikipedia.

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 ?
The nutrient-rich humus will also help regulate the pH and moisture of your garden or yard.
Humus status implies here the management of SOM in soil cover, which may be quantitatively expressed by the content (concentration and stock) of SOM, soil organic carbon (SOC) or energy captured into SOM.
The plate also shares the attraction that the Humus has, with the diversity of colours.
Pasados los tres meses, se realizo el analisis final (caracterizacion) del humus resultante.
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.
Physical clay fraction plays a special role in soil granulometric content (<0.01 mm), which concentrates 95-100% of humus and clay minerals.
Al final del experimento el humus formado fue homogenizado, secado, tamizado y enviado al laboratorio para su analisis de caracterizacion.
1984) de uso frecuente en acuicultura y el otro, un fertilizante comercial de bajo costo (Humus liquido[R] a pH 7.6 [+ o -] 0.05); la constitucion de estos medios, de acuerdo a sus disenadores o fabricantes, se listan en el cuadro 1.