ArticleFrontiers in plant science2025
Synergistic effects of chemical and biochemical fertilization on yield enhancement and oil quality optimization in 'Zard' olive cultivars.
Article in Frontiers in plant science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Qualitative attributes, nutritional traits and yield components of Calendula officinalis L.: response to liquid NPK fertilizer, humic acid, and moringa leaf extract.Scientific reports · 2026Article
- Linking soil physicochemical properties to leaf nutrient composition in olive orchards on semi-arid calcareous soils.Scientific reports · 2026Article
- Improving Peach Fruit Yield and Quality Using Foliar Application of Nano Chelated Zinc and Seaweed Extract (Food science & nutrition · 2026Article
- Unveiling the Synergistic Effects of Melatonin, Arginine, and Nano-Chelated Zn-Fe on Enhancing Fruit Quality in Apricot (Food science & nutrition · 2025Article
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4 authors.
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Abstract
Purpose: This research evaluates the combined impact of chemical and biological fertilizers on 'Zard' olive trees, aiming to reduce chemical dependency, enhance fertilizer efficiency, and improve nutritional value, yield, and oil quality from 2020 to 2023. Method: A factorial design within a randomized complete block was used, focusing on the first factor, soil chemical fertilizer application (CF) at three levels, 100% (CF100), 75% (CF75), and 50% (CF50) of the fertilizer requirement as determined by soil testing. This was coupled with foliar applications of 20-20-20 NPK fertilizer with micronutrients. The second factor, biological fertilizer application (BF), also comprised three levels: BF0 (control), soil-applied organic fertilizer without biological agents; BF1, which included a soil application of an organic fertilizer mix, mycorrhizal fungi, and the beneficial bacteria Results: The CF100+BF1+BFF treatment significantly increased fruit length (31.14%), diameter (41.61%), flesh thickness (30.48%), fresh weight (38.76%), dry weight (55.68%), and yield per tree (27.00%) compared to the control (CF100+BF0). Principal Component Analysis (PCA) identified CF100+BF1+BFF, CF75+BF1+BFF, and CF50+BF1+BFF as superior treatments for fruit characteristics, while CF50+BF1+BFF excelled in oil quality indicators. Conclusion: The study recommends the CF75+BF1+BFF and CF50+BF1+BFF treatments for concurrent improvements in fruit and oil quality. The combined use of biological fertilizers with reduced chemical fertilizers is considered the superior and optimal approach for fertilizing 'Zard' cultivar olive orchards.
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