Spelt is one of the oldest subspecies of wheat, known already from the stoneage. Over time it has been supplanted by modern wheat varieties, but in recent years the cultivation of spelt is undergoing its renaissance. To a large extent this is related to the development of organic farming and increasing interest of consumers in so-called healthy food. Compared with common wheat, spelt wheat grain contains more minerals and proteins, but its processing is more difficult and expensive. One of the problems in cultivation of spelt wheat is susceptibility of winter varieties grown in Europe to lodging. The aim of the two-year field study conducted in the Agricultural Experimental Station Institute of Plant Protection – National Research Institute in Winna Gora was to determine the effectiveness of different growth regulators used in the spelt wheat crops. The following preparations were tested: ethephon, trinexapac ethyl, trinexapac ethyl + chlormequat chloride and prohexadione calcium. The evaluated parameters were: plant height, internodes length and the yield. Shortening effect was observed on all plots with growth regulators used. The best effect was obtained after the application of a mixture of trinexapac ethyl + chlormequat chloride.
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