Sammenhengen mellom volumvekt og bumusinnhold i lufttørr, siktet dyrka jord
Journal article
![Thumbnail](/nibio-xmlui/bitstream/handle/11250/2489973/434_013_Sammenhengen%20mellom%20volumvekt%20og%20mumusinnhold%20i%20luftr%c3%b8r%20siktet%20dyrka%20jord.pdf.jpg?sequence=4&isAllowed=y)
Permanent lenke
http://hdl.handle.net/11250/2489973Utgivelsesdato
1988Metadata
Vis full innførselSamlinger
Sammendrag
The correlation between the bulk densi ty and the humus content of air-dried, sifted cultivated soil has been investigated. The investigation included soil samples with a wide variation in humus content and distinguished between clay (68 samples), silt (58 samples) and sand (66 samples). The bulk densities were determined by weighing 5.5 ml soil, sampled with a scoop. The humus content was calculated by multiplying the organic carbon con tent by 1. 724. The organic content was determined by means of a Leco instrument, equipped with a high frequency oven and an IR-detector to detect the C02 content in the combustion gas. The organic C content was read directly as % carbon C.