The Effect of Organic Fertilizers on Nutrient Absorption in Different Agrocenoses of Brown Meadow Soils of Shirvan
Aygun Aliyeva 
Abstract. The cultivation of agricultural crops involves intensive interactions between humans and nature, often resulting in soil degradation and reduced fertility. This study examines the impact of organic fertilizers on the fertility and agrochemical properties of brown meadow soils in the Shirvan Plain of Azerbaijan. The main objective was to evaluate the effectiveness of organic fertilizers, particularly manure, in improving soil characteristics and nutrient availability under irrigated vegetable crops. Field experiments and laboratory analyses were conducted to assess soil properties at different depths, including humus content, nitrogen, phosphorus, potassium, density, and porosity. The results demonstrated that the application of organic fertilizers significantly increased humus content and essential nutrients, improved soil structure, and enhanced microbial activity. The formation of water-resistant aggregates was also observed, contributing to greater soil stability. Overall, the findings indicate that the consistent use of organic fertilizers supports the restoration of soil fertility and promotes sustainable agricultural development.
Keywords: soil fertility, organic fertilizers, humus, nutrients, soil properties