ZESZYT Nr 4 / 2010 Abstrakty Volume No 4/2010 Abstracts |
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| 1. The effect of foliar application of copper on content of this element in winter wheat grain Jolanta Korzeniowska, Ewa Stanisławska-Glubiak Abstract. Copper is an essential element for plants, animals and people in small, but absolutely necessary quantities. Deficiency of this element in the diet causes many health problems at animals and people. The content of Cu in wheat grain in Poland has decreased by about 20% over the past 30 years, which adversely affects its nutritional value. The aim of the study was to examine the possibility of increasing the copper content in winter wheat grain by foliar application of this element. In 2003–2006, six oneyear fi eld trials were conducted with copper foliar fertilization of 10 varieties of winter wheat. Spraying with copper sulfate at a dose of 305 g ha-1 was performed in spring in full tillering stage. The average density of copper in the grain was at a very low level of 2,4–2,6 mg kg-1. Such a content is not enough in terms of nutritional needs of livestock. Single copper spray did not cause a statistically signifi cant increase in the content of this element in the grain of any of the tested varieties. At the same time, varieties that reacted with the highest, approximately a 20% increase in yield to the application of copper, showed a 11–12% decrease in Cu content of grain. This decline was most likely the dilution effect. key words: wheat, copper content, foliar application, dilution effect |