Effect of increased nitrogen fertiliser rates on yield and grain quality of winter wheat varieties
2005
Malecka, S., State Stende Plant Breeding Station, Dizstende, Talsu reg. (Latvia) | Bremanis, G., State Stende Plant Breeding Station, Dizstende, Talsu reg. (Latvia) | Miglane, V., State Stende Plant Breeding Station, Dizstende, Talsu reg. (Latvia)
Winter wheat was cultivated in the field at the State Stende Plant Breeding station in 2002-2004 on a podsolic sand loamy soil. A field experiment of nine varieties of winter wheat was designed to study the influence of variety choice and the effects of additional top dressing (up to N90) of N fertiliser rates to grain yield and quality data such as grain protein content, Zeleny index, falling number, and volume weight. The mathematical analysis of the data was applying the analysis of variance. The meteorological conditions in 2002-2004 were different compared to average long-term observations and this difference influenced plant development and yield. The results showed that differences in agro-meteorological conditions and variety choice influenced the grain quality parameters significantly more than N fertilisation given additionally to N90.
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