The content of soil humus when using organic and mineral fertilizers

This article suggests that the content of humus is the ability of the soil to adapt to human economic activity. The scientific team conducted a three-year field experience, taking into account the humus state of the soil in two terms. Conclusions are made based on the data obtained. The use of organic fertilizers contributes to a positive balance of humus. The amount of the increase varies from 0.06% to 0.14%. The increase in humus content is directly proportional to saturation with mineral nutrition (from 0 to 1 full dose). Mineral fertilizers reduce the loss of soil humus. The dependence is reversed: with a full dose of fertilizers, the decrease in humus content over 3 years is -0.11%, with a half dose -0.12%, and with zero -0.14%. To effectively preserve and increase the humus content in the soil, 14 tons/ha of compost based on bird droppings and a full dose of mineral fertilizers calculated based on the needs of different crops should be applied.