engleski

The influence of weather conditions on economic characteristics of sunflower hybrids in macro experiments from 1997 to 2007

Over the period of 11 years (1997-2007), macro experiments with sunflower hybrids were set up at the location of Vinkovci. The experiments included hybrids of recognized world companies, from 13 to 30 per each test. During 11 years, the average head diameter, stem height, disease incidence of Sclerotinia sclerotiorum, grain yield, oil yield and oil content were recorded for each hybrid. The highest plant height was recorded in 1997 and 1998 (204 cm), while the lowest plant height was observed in 2006 (169 cm). Average plant height throughout the experiments was 188 cm. Head diameter ranged from 18.1 to 22.9 cm, averaging 19, 6 cm. The greatest incidence of white rot disease (Sclerotinia sclerotiorum) occurred in 2005 (39.6% of infected plants). The average grain yield was 3 t ha-1 and it varied from 1.13 t ha-1 in 2005 to 4.56 t ha-1 in 2000. The oil content was between 42.05 and 48.17 %, with an average over experiments of 44.42%. The lowest oil yield was obtained in 2001 (0.96 t ha-1) and the highest in 2000 (2.04 t ha-1), with an average of 1.39 t ha-1).

economic characteristics – sunflower – weather conditions.

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