Question

what is humours ? what is its function in the soil?

Answer 1

humus is an important part of your soil, but few people know what it is and why it is important. There are many myths about humus that need to be cleared up. It turns out that humus may be the most important thing in soil: more important that dew worms, and organic matter.
 the term humus is sometimes used to describe well aged compost. You can buy bags of stuff labeled ‘humus’ at gardening centers, but this is just mislabeled compost. This is an incorrect use of the term. Compost is plant material that is slightly decomposed. Even aged, well-rotted compost is still only slightly decomposed.


Humus, representing less than 5% of the dry weight of soil, imparts unique and remarkable properties to the inorganic matrix of sand, silt, and clay. It is to be regarded as a positive asset in crop production. In addition to its well-known effects on physical, chemical, and biological processes in soil, humus plays a key role in the behavior of pesticides and the solution and transport of micronutrients to plant roots. Interaction of humus with organic pesticides and other potentially toxic pollutants and complexation of transitional metal ions, particularly those essential for plant growth are discussed.


i hope it will help you
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