Plant Soil Environ., 2025, 71(1):48-57 | DOI: 10.17221/303/2024-PSE

Optimising sunflower yields: insights from meta-analysis on fertilisation impact and planting strategies for enhanced crop productivity in ChinaOriginal Paper

Shun Li1, Zongqing Liu2
1 Academy of Animal Science and Veterinary, Qinghai University, Xining, P.R. China
2 College of Ecological and Environmental Engineering, Qinghai University, Xining, P.R. China

Sunflower serves as a valuable rotational crop, suitable for snack processing or sunflower seed oil extraction, proving to be a lucrative cash crop. To address sunflower yield uncertainties, this study employs meta-analysis to examine the impact of fertilisation. Utilising 41 studies and 392 pairs of observations based on four criteria, we found an overall 27% increase in sunflower yield with fertiliser application. Nitrogen (N), phosphorus (P), and potassium (K) individually applied raised yield by 23.37, 20.92, and 11.63%, respectively. Combined fertilisers (NP, NK, NP, and NPK) enhanced yield by 29.69, 28.40, 17.35, and 41.91%, respectively. Sunflower type minimally affects yield, while planting density significantly influences it. Combining local soil conditions and environmental factors with appropriate planting densities ensures maximum sunflower yield, fostering economic benefits for farmers. This study holds constructive implications for sunflower cultivation in China, contributing to increased yield.

Keywords: Helianthus annuus L.; production; soil fertility; heterogeneity

Received: June 5, 2024; Revised: November 26, 2024; Accepted: November 27, 2024; Prepublished online: January 7, 2025; Published: January 8, 2025  Show citation

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Li S, Liu Z. Optimising sunflower yields: insights from meta-analysis on fertilisation impact and planting strategies for enhanced crop productivity in China. Plant Soil Environ. 2025;71(1):48-57. doi: 10.17221/303/2024-PSE.
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