Yielding of two types of maize cultivars grown on CCM in conditions of zero nitrogen fertilization

Field studies were carried out in the Didactic and Experimental Farm in Swadzim near Poznań in the years 2004-2007. The objective of the studies was the investigation of the reaction of two types of maize cultivars to zero mineral fertilization and in consequence to the energetic value of the maize raw material grown on CCM in comparison with mineral fertilization. In the experimental studies, a more useful hybrid for the application in ecological agriculture has shown to be the cultivar LG 2244 "stay-green" type in comparison with the hybrid Anjou 258. The LG 2244 cultivar possessed a more favorable content of organic compounds in the cobs and a higher concentration of net energy. Furthermore, in LG 2244, the differences between the two applied fertilization variants were smaller than in Anjou 258 which was more sensitive to nitrogen fertilization.

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