Volume 1 (2025) 

Analysis of the regulatory effects of reduced nitrogen, increased calcium, and layered fertilization on peanut kernel quality

Jianfeng Wu, Hemei Zheng

Volume 1 (2025), Article ID: eip1v0110c  

Published: 2025-01-10 (Received:  2024-10-01; Revised:2024-12-08; Accepted: 2024-12-19) 

DOI: https://doi.org/10.5281/zenodo.15517378 

Citation

Wu J, Zheng H. Analysis of the regulatory effects of reduced nitrogen, increased calcium, and layered fertilization on peanut kernel quality. Engineering Innovation and Practice, 2025, 1, eip1v0110c.

Abstract

With increasing market demands for higher peanut quality, fertilization techniques, as a significant factor affecting peanut kernel quality, have become a research focus. This study aims to evaluate the regulatory effects of reduced nitrogen, increased calcium, and layered fertilization techniques on peanut kernel quality. By applying various levels of nitrogen and calcium fertilizers, combined with two fertilization methods—mechanical layered fertilization and manual broadcasting—the study systematically analyzes the impact of these techniques on peanut kernel protein content, oil composition, amino acid profile, and their interrelationships. The results show that reduced nitrogen and increased calcium significantly enhance the protein content and fatty acid composition of peanut kernels, with a notable increase in the proportion of linoleic acid. Layered fertilization further improves fertilizer utilization and optimizes kernel nutrient composition. Correlation analysis indicates a significant positive correlation between crude protein, total amino acid content, and peanut yield, while oil content is negatively correlated with yield. Additionally, the study reveals the interactive effects of nitrogen and calcium co-application on peanut quality, providing theoretical support for the application of fertilization techniques in enhancing peanut quality. This study offers a scientific basis for fertilization management in peanut cultivation, aiming to improve peanut nutritional value and market competitiveness through optimized fertilization strategies, thereby promoting sustainable development of the peanut industry.

Keywords

peanut kernel quality, fertilization techniques, nitrogen and calcium, peanut yield, sustainable agriculture

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