RESEARCHES REGARDING THE BEHAVIOR OF SOME LETTUCE GENOTYPES IN THE PROTECTIVE CROP SYSTEM TECHNOLOGY
AbstractThe existence of a growing assortment of garden lettuce, constantly renewing,
required to carry out research in order to determine the most valuable crops in protected areas of Oltenia. The aim of this experiment was to investigate the quality and quantity of the lettuce in greenhousesby applying some important techological sequences. Mulching the soil and plant protection with Agryl canvas have greatly improved the thermal and hydric soil proprieties with beneficial effects on earliness and yields of the lettuce grown in greenhouse. The biological material was represented by six genotypes of lettuce: Larisa, Sommer Kragner, Gratia, Attraction, Nadege and MÃ¡jus KirÃ¡lya. From the experimental
results on the behavior of growing lettuce in protected crop conditions, the highest yield was recorded at the Kragner Sommer, genotype, 40.5t/ ha, and from the biochemical aspect, the genotypes showed optimum values, but concerning the nitrates concentration, the values were higher on Gratia and Elsa cultivars.
Working Group 3: Fundamentally Disciplines and Environment and Plant Management