INFLUENCE OF FERTILIZER AND CULTIVAR ON THE GLUTEN QUALITY OF WINTER WHEAT

Abstract

During our experiments in 2017/2018 crop year at Látókép Experimental Farm of University of Debrecen, we examined the effect of different cultivars and increased dosages of artificial fertilizer (control, N90PK, N150PK) on quality of wheat gluten. The gluten quality parameters of winter wheat were significantly influenced by fertilizing and cultivar. N90PK dosage improved significantly the measured parameters, further fertilizer application had no statistically provable effect. Application of artificial fertilizers increased significantly the gluten spread of the samples, compared to the control ones. KG Kunhalom had significantly higher crude protein (CP), wet gluten (WGC), dry gluten, gluten ratio and Zeleny index (ZI) parameters, this means that KG Kunhalom had the best protein and gluten quality potential. Also only KG Kunhalom with N150PK fertilizing treatment complied with the Hungarian premium class. According to Hungarian standard, samples with control treatment and Hybiza with any fertilizing treatment were unfit to bakery use. Using Pearson’s correlation analysis results, CP and ZI were in tight positive; WGC was in medium positive, while gluten index was in loose negative correlation with fertilizing. In the case of growing wheat for baking use, there is a need to put great emphasis on selecting the right cultivar and agrotechnology practices.

Keywords

• winter wheat
• cultivar
• fertilizing
• gluten quality
• crude protein