Humus and compost specific weight: weight of 1 m³
The concept of “organic farming” is increasingly found in materials devoted to agricultural technologies. It implies rejecting chemical fertilizers and using exclusively organic ones, the most valuable of which is humus.
Humus is a loose, homogeneous, crumbly brown mass with an earthy aroma, without the smell of ammonia, obtained after the process of manure decomposition is complete. Manure preparation lasts for one and a half to two years under natural conditions. When the rotting process is complete, the weight of 1 m3 of humus, or compost, will be 500-800 kg.
| Density of humus, compost, g/cm3 | Specific weight of humus, kg/m3 | Tonnes in 1 m3 of humus |
|---|---|---|
| 0.5-0.8 | 500-800 | 0.5-0.8 |
What is humus, compost, useful for?
Besides the fact that humus contains no foreign chemical substances and is created exclusively through natural processes and the work of microorganisms, it is filled with many substances useful for plants. They stimulate development and fruiting and improve the taste of root crops and greens. Humus absorbs and retains moisture well without creating capillaries that pull it from the soil. Humus particles remain elastic and “fluffy” because air gaps remain between them. Adding humus to poor sandy and clay soils helps improve their chemical composition and physical characteristics many times over.
Humus is recommended for use as mulch. Soil under such cover heats and cools more slowly, loses less moisture, and earthworms and beneficial microorganisms settle in its upper layers at the root level of garden plants, supplying plants with useful substances. In hot weather, humus mulch does not overheat and does not burn the root collar, thereby preventing plants from becoming infected with pathogens.
After watering or rain, the nutrients of humus, compost, gradually enter directly into the root area. Humus, compost, is used as part of the substrate when growing seedlings.
It should be noted that humus, compost, may have different characteristics and saturation with certain substances, and may affect plants and soil in different ways. These indicators depend on what manure the humus is prepared from. Cow manure, horse manure, small-ruminant manure and bird droppings are used. Important components are the feed the animals ate and the bedding. The bedding plays an important role in manure decomposition. Straw and peat absorb moisture, retain nitrogen compounds and prevent the development of volatile ammonia.
Preparing humus, compost
Under natural conditions, in a manure heap or in special boxes, manure collected with bedding becomes humus in 1.5-2 years. Readiness is determined visually, while the volume becomes 2-3 times smaller. If animal excrement is collected without bedding, or there is little bedding, it must be layered in boxes with straw or peat. It is advisable to cover the top with roofing felt or film so that rain does not wash out useful substances. To stimulate rotting, the mass should be moistened and turned with a pitchfork. A humus box should have openings for air access and drainage of excess moisture.
If only a small amount of fertilizer is needed, it can be bought packaged in specialized stores. The weight of humus, compost, in a bag may vary and ranges from 10 to 70 kg. The price of natural packaged fertilizers is significantly higher than bulk ones. If you want to save money, you can buy fresh manure directly from livestock farms and prepare humus yourself at your dacha or garden plot.
Frequently Asked Questions
Can the density of humus and compost be used for precise calculations?
The density and weight values for humus and compost in this article are reference values. They are suitable for preliminary estimates, but design, construction, production and other critical calculations should be checked against standards, material datasheets or measurement results.
Why can the actual weight of humus and compost differ from the table?
The actual weight of humus and compost depends on composition, moisture, temperature, porosity, fraction size, material grade and measurement conditions. Because of this, real values may differ from the average table data.
How do you calculate the mass of humus and compost from density?
For an approximate calculation, use the formula: mass = density × volume. If the density of humus and compost is given in kg/m³ and the volume is in m³, the result will be in kilograms.