نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی کارشناسی ارشد علوم و مهندسی باغبانی، گروه باغبانی دانشکده کشاورزی، دانشگاه بیرجند، استان خراسان جنوبی، ایران
2 دانشیار گروه علوم و مهندسی باغبانی، دانشکده کشاورزی، دانشگاه بیرجند، خراسان جنوبی، ایران
چکیده
This study tested vermicomposting of seedless barberry pruning residues in South Khorasan, Iran, using the earthworm Eisenia fetida. Three feedstocks—leaves, a 1:1 leaf-branch mix, and branches alone—were composted for 50 days and analyzed for pH, conductivity, and macro-/micronutrients. Results showed substrate strongly influenced nutrient enrichment. Leaf vermicompost contained the highest macronutrients (N 2.76 %, K 2.99 %, Ca 1.87 %, S 0.05 %) and micronutrients (Fe 30.7 mg kg⁻¹, Zn 1.91 mg kg⁻¹, Na 6,600 mg kg⁻¹, B 18.9 mg kg⁻¹), exceeding typical garden-waste values. The leaf-branch mix was intermediate, and branches alone lowest. Phosphorus (1,135–1,645 mg kg⁻¹) varied less. Although chloride was high (>10,000 mg kg⁻¹), the findings confirm E.fetida accelerates mineralization and produces nutrient-rich vermicompost. Barberry leaves are thus an exceptional feedstock, turning pruning waste into a high-value organic fertilizer that can improve the soil fertility, reduce chemical fertilizer use, and support sustainable, circular agriculture in arid regions.
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