Effect of Apical-timed Urea Spraying on Yield Components and Quality Properties of Spring Wheat (Triticum aestivumL.) in Greenhouse Experiments

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Abstract
The effect of foliar urea spraying on yield components and quality properties of four spring wheat varieties was studied at the University of Helsinki, Department of Crop Husbandry, in greenhouse trials during the autumn of 1988 and the winter of 1989. Nitrogen was applied four different developmental stages of the wheat ear. Foliar urea spraying had different effects on the examined wheat genotypes. Only yield components of a new Finnish variety, ‘Heta’, seemed to benefit from nitrogen application. Foliar spraying of urea increased the protein content and the amount of wet gluten in all varieties. The falling number of ‘Heta’ and ‘Kadett’ improved.