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Changes in yield, protein, minerals, and fatty acid profile of wheat (Triticum aestivum L.) under fertilizer management involving application of nitrogen, humic acid, and seaweed extract

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Journal of Soil Science and Plant Nutrition Aims and scope Submit manuscript

Abstract

Purpose

Synthetic and organic management practices may improve crop productivity. The objective of this project was to determine the optimum level of chemical and organic fertilizer needed to improve yield and physio-chemical attributes of wheat.

Methods

The 2-year field experiment was conducted to assess the yield, protein and gluten contents, minerals, and fatty acid profile of wheat (Triticum aestivum L.) in a semiarid condition under different treatments of nitrogen (0, 75, 150, and 225 kg N ha−1) and organic fertilizers (control; foliar-applied seaweed extract, 4 L ha−1; foliar-applied humic acid, 2 kg ha−1; and seaweed extract and humic acid).

Results

Improved biological, spike, and grain yield of wheat were observed under 150 kg N ha−1 in the combination of humic and seaweed extract. The highest grain protein and zinc (Zn) was found in plants treated with 225 kg N ha−1 and the combination of humic acid and seaweed extract. The effect of nitrogen was stronger than organic fertilizers on gluten content and Zeleny sedimentation. The treatment with 150 kg N ha−1 combined humic acid and seaweed extract led to highest grain potassium (K) and phosphorous (P) contents. The main fatty acids composition was linolenic acid (C18:3, 30.9–45.6%). The N fertilizer led to decreased polyunsaturated fatty acids (PUFAs) and increased saturated fatty acid (SFAs).

Conclusions

The foliar application of 2 kg ha−1 humic acid and 4 L ha−1 seaweed extract along with soil application of 150 kg N ha−1 to reach the optimum productivity of wheat (cv. SHS 022) in semiarid climates.

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All authors contributed equally to this article.

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Correspondence to Hamid Mozafari.

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The authors declare no competing interests.

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Nasiroleslami, E., Mozafari, H., Sadeghi-Shoae, M. et al. Changes in yield, protein, minerals, and fatty acid profile of wheat (Triticum aestivum L.) under fertilizer management involving application of nitrogen, humic acid, and seaweed extract. J Soil Sci Plant Nutr 21, 2642–2651 (2021). https://doi.org/10.1007/s42729-021-00552-7

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  • DOI: https://doi.org/10.1007/s42729-021-00552-7

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