Research concerned three genotypes of white lupin (Lupinus albus L.) from three countries: the Romanian white lupin cultivar Medi, the Serbian source De Voivodina, and the Turkish source De Turcia. Determination of genotypes sowing period mentioned, has great importance as biological materials have been created in the different climatic conditions in the area who have done research and that the area that is supposed to be grown. Sowing periods studied, they noted that lupins have a minimum temperature of germination of 3-4 °C and determining the amount of losses due to late sowing, until the third decade of May. The type of soil on which was carried the research was a brown podzolite, with a low acid reaction (pH 5.90 in Ap, poorly supplied with humus, phosphorus, and potassium, with a base saturation degree of V% = 78% and with medium fine texture in the first 49 cm. The Medi white lupin cultivar was noted among the white lupin cultivars, whose average yield over the three periods of sowing was 2,640 kg/ha. The De Voivodina source had a close yield, the difference compared to the Medi white lupin cultivar lacking significance. The lowest yield was in the De Turcia source, i.e. only 1,840 kg/ha. Among sowing periods, we noticed, with practically equal yields, the variants sowed between March 20 and 25 and between April 10 and 15. Crops in the field amplitude within the range investigated were 1950 kg / ha in variant sown at the end of May last decade, the origin is Turkey and 2840 kg / ha in planted variant of March last decade the variety Medi. This magnitude of about 1000 kg / ha in variants with extreme values highlights the practical importance of links taken year study that the optimum genotype cultivated and sown in habitat conditions that have made inquiries.

genotypes of white lupin; sowing periods

Presentation: oral