The Main Characteristics of the Application of Perennial Herbs and Mineral Fertilizers in Increasing the Fertility of Eroded Gray-Brown Soils in the Mountainous Shirvan

Abstract

Vegetation is considered the most important tool against erosion. The denser and more productive the vegetation, the weaker the erosion. Plant roots hold soil particles tightly together, preventing them from being washed away or blown away. One of the factors that cause the erosion process to occur and go violently is some improper human economic activity. Sufficient scientific research has been conducted on the application of perennial grasses and mineral fertilizers to restore the fertility of eroded soils[2;5]. The results of the experiments conducted in this direction mainly prove that these measures increase the fertility of eroded soils and increase their productivity [3;4;8]. The use of perennial grasses and mineral fertilizers is considered a more radical way to restore the fertility of eroded soils. Perennial grasses are of great importance in increasing fertility and resistance to erosion in eroded soils, as well as providing fodder for livestock. Therefore, this work has great practical and scientific importance. These issues are reflected in the Land Code of the Republic of Azerbaijan [1]. Based on these experiences, we have adopted one of the five variants of the field experiment as a background. We sowed in September 2017 using a mixture of perennial grass plants Onobrychis viciifolia (Sainfoin) + clover+ couch grass+ryegrass For comparison, the first option natural area (pasture) was taken. In the third option, background+ N30P30K30, in the fourth option, background+ N45P45K30, in the fifth option, background+ N60P60K45, fertilizer mixtures were added to the background as we mentioned.