Studies of sand soils properties and fertility after application of non conventional fertilizer made of brown coal
1994
Maciejewska, A.
The experiment lasted for five years. On the basis of the investigations it can be seen that application of the fertilizer effected in improvement of soil reaction in increase of total content of organic carbon as well as improvement of sorptive, physical and water properties of the soils. The applied fertilizer caused increase of light humus fraction and advantageous change in ratio between humin and fulvic acids
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