Volume 1 (2025) 

A comprehensive study on the effects of different nitrogen application rates on growth, yield, and quality of summer peanut

Dongyun Guo, Zhiying Zhang, Hui Li

Volume 1 (2025), Article ID: eip1v0110d  

Published: 2025-01-10 (Received: 2024-10-03; Revised: 2024-12-04; Accepted: 2024-12-19) 

DOI: https://doi.org/10.5281/zenodo.15526184 

Citation

Guo D, Zhang Z, Li H. A comprehensive study on the effects of different nitrogen application rates on growth, yield, and quality of summer peanut. Engineering Innovation and Practice, 2025, 1, eip1v0110d.

Abstract

This study aims to systematically assess the comprehensive effects of different nitrogen application rates on the growth of summer peanuts, providing the scientific basis for optimizing fertilization management. The experiment was conducted in H Province from 2021 to 2022, using the H3A5 variety, and included five nitrogen treatment levels (0, 45, 90, 135, and 180 kg·hm⁻²). Pod yield, quality, nitrogen accumulation dynamics, photothermal physiological characteristics, and root morphology were measured to analyze the effects of nitrogen application. Results showed that nitrogen application had a significant impact on pod yield and quality, with optimal nitrogen rates of 150 kg·hm⁻² (first year) and 113 kg·hm⁻² (second year), resulting in an average yield increase of 18.9%. Additionally, as nitrogen rates increased, both nitrogen accumulation rate and utilization efficiency were significantly enhanced, along with improvements in photothermal physiological performance and root development characteristics. This study suggests an appropriate nitrogen application range of 110 to 150 kg·hm⁻² to meet the requirements of different soil and climate conditions, offering guidance for agricultural production and establishing a foundation for further research on nitrogen optimization strategies.

Keywords

nitrogen application, summer peanut growth, fertilization management, pod yield improvement, nitrogen optimization

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