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The Effect of Potassium and Sulfur Fertilization on Seed Quality of Faba Bean (Vicia faba L.)

Department of Agricultural Chemistry and Environmental Biogeochemistry, Poznan University of Life Sciences, Wojska Polskiego 71F, 60-625 Poznan, Poland
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Agronomy 2019, 9(4), 209; https://doi.org/10.3390/agronomy9040209
Received: 28 February 2019 / Revised: 20 April 2019 / Accepted: 22 April 2019 / Published: 25 April 2019
(This article belongs to the Section Soil and Plant Nutrition)
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Abstract

Faba bean seeds are regarded as a highly valuable protein source for human and animal nutrition. High yield and quality of faba bean require adequate mineral nutrition. The aim of the study was to assess the impact of potassium (K) and elemental sulfur (S) on crude protein (CP) and tannin content (TC) in seeds, crude protein yield (CPY), and amino acid (AA) composition. Field trials were carried out during 2010–2013 in the temperate climate of Central Europe. The study assessed the influence of the following factors: variable soil K content and fertilization (K1, K2, K3, and K4) and elemental S application (0, 25, and 50 kg S ha−1). Plants were harvested at two growth stages to obtain immature seeds and mature seeds. K and S applications did not have a significant impact on CP and AA composition, including sulfur AA content. The TC decreased in response to increasing content of plant-available K in soil. In respect to CPY, the results indicate a positive response of faba bean to increasing K content in soil. The effect of S fertilization depended on the K treatment. The most beneficial influence of S on CPY was registered on K-poor soil. View Full-Text
Keywords: amino acids; broad bean; cysteine; methionine; nutritional value; protein yield; tannin amino acids; broad bean; cysteine; methionine; nutritional value; protein yield; tannin
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Barłóg, P.; Grzebisz, W.; Łukowiak, R. The Effect of Potassium and Sulfur Fertilization on Seed Quality of Faba Bean (Vicia faba L.). Agronomy 2019, 9, 209.

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