engleski

The effect of seed treatment on growth and development of oilseed rape

The development and growth of oilseed rape depend on the choice of variety or hybrid, on fertiliser, climatic condition, type of soil and pests. In Croatia oilseed rape seed treated with the preparation Chinook FS 200 is generally sown, which enables the protection of this crop from autumn pests in the early development stages (BBCH 0-14). The aim of the investigation was to determine the effect of thiametoxam (Cruiser OSR FS) and imadicloprid (Chinook FS 200) on the pests, development, and growth of oilseed rape. The research was carried out during the vegetation period of 2007/2008 at two sites: Koprivnički Bregi and Popovača. At Koprivnički Bregi two visual inspections of the plants were made (November 13, 2007 and March 1, 2008) on the variety Mohican. Ten plants in six replicates were inspected. At Popovača only one visual inspection was made, on March 4, 2008, with the variety Oase. Ten plants in three replicates were examined. The impact of the mentioned active ingredients on the pests was low (pests infestations were very low). The impact on the growth and development of the oilseed rape plants was determined by measuring the length of the root, the weight of the plant, the number of leaves and the number of plants per square metre. Through a statistical analysis of the data obtained it was found that the number of leaves on the plants whose seed had been treated with thiametoxam was significantly greater than that on the plants treated with imidacloprid. The one-year results show that the research should be continued and expanded to determine the impact of thiametoxam on the growth and development of different oilseed rape hybrids.

seed treatment; oilseed rape

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