The growing of winter oilseed rape. Results of five years of trials. Umbria

Ciriciofolo, E.

Informatore Agrario 41(38): 45-48


Accession: 001486730

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In 1980-2, autumn-sown oilseed rape cv. Rafal, Kid, Karina, Elvira and Garant gave the highest seed yields (3.1 t, 2.7 t, 2.7 t, 2.7 t and 2.6 t/ha, resp.) when up to 32 cv. were compared. In 1983-4 cv. Rafal, Kid, Jet Neuf and Karina gave the highest yields with 3.9, 3.8, 3.7 and 3.6 t/ha. Yields of spring-sown cv. were generally lower than yields of autumn-sown cv. Over a 3-year period, when 0-200 kg N/ha was applied pre-sowing, pre-em. or split between the two, yields increased with increasing rate of N. Pre-em. applications significantly outyielded pre-sowing applications with the split treatment giving intermediate results. Ceutorhynchus picitarsis and Meligethes aeneus frequently attacked the crop but, if suitable insecticides were used, yield reductions did not occur.