ON THE IMPACT OF ROW DISTANCE AND OF SOWING DENSITY IN WHITE LUPIN (LUPINUS ALBUS L.) PUBLISHEDLeontina Băbuţiu, Gheorghe David
The beginning of the history of lupin cultivation in the old world is often associated with the times of the ancient Egyptian civilization. It is, however, more likely that originally white lupin was introduced into cultivation in ancient Grece where its greatest biodiversity was concentrated and wild-growing forms have been preserved until nowadays (ssp. graecus). Research carried out in the Gurahonţ area, on a brown podzolit soil, using as genotype the white lupin (Lupinus albus L.) Medi cultivar, pointed out the possibility of producing over 2,900 kg/ha. Seeding technology, optimizing the distance between rows that the number of grains grown white lupins germinabile grains/m2, has a special importance because for the two elements occurs branching plants reach maturity, uniformity of grain, reduce the losses at harvest by shaking. Depending on the distance between rows and the amount of plants per unit area differs maintenance and technology culture that thus being able to fight more effectively with weeds and reduce production costs. In the area investigated had a magnitude yields between 2100 kg / ha in variant sown at 25 cm distance between rows 30 germinabile grains /m2 and 2940 kg grain / ha in variant sown at 75 cm distance between rows 50 germinabile grains/m2. Increasing row distance from 25 to 50 cm increased the yield with 18%, which corresponds to a difference of 520 kg / ha provided statistically as very significant. The highest yields were in the variant sowed at a row distance of 75 cm, i.e. 23% higher than the control. Among the tested sowing densities, the optimal one proved to be 50 germinating grains/m2 yielding 9% more than the control variant, whose sowing distance was 30 germinating grains/m2, that a difference of 230 kg/ ha provided as distinct statistically significant. Lower requirements from the soil make possible its cultivation with very good results in hill areas with acid soils.
white lupin; sowing technology