Abstract

To measure the impact of organic, mineral, and boron fertilization on nutrient levels (N, P, K, and B) in the veg parts and tubers of potato (Solanum tuberosum L.) in alkaline soils, a field experiment was carried out in spring season of 2024 in the experimental fields of the college of Agricultural Engineering Sciences, University of Baghdad, Al-Jadriya. The participants used in the study were a three-factor, three-replication factorial randomized complete block design (RCBD). Organic manure (chicken manure) was applied at 0, 10, and 20 Mg ha⁻¹ (OM₁, OM₂, OM₃); mineral NPK fertilizer at 0, 50%, and 100% of the recommended rate (MF₁, MF₂, MF₃); and boron at 0, 1, and 2 kg B ha⁻¹ (B₁, B₂, B₃). The findings indicated that the triple interaction (OM₃MF₃B₃) was much more effective in boosting the nutrient levels in the vegetative portions and tubers than the control (OM₁MF₁B₁). Vegetative parts had the highest percentages of N, K, and B at 3.43%, 3.00%, and 35.45 mg/kg, respectively, and the tubers had 1.98%, 1.96%, and 32.80 mg/kg, respectively, which were increases of 92.69%, 53.84%, and 265.25%, respectively, over the control. There was no significant response in the phosphorus concentration. The integrated application enhanced nutrient-use efficiency indices (AE, RE, and PE) and rate constant of uptake of nutrients (ka), and decreased loss of nutrients (kl). These findings reveal that the use of organic-mineral-boron integrated fertilization enhances nutrient bioavailability, uptake capacity, and soil fertility and may serve as a platform for relevant nutrient delivery to alkaline soils.