Dynamics of tubers' accumulation and the nutritional quality of the potatoes cultivated on the sandy soils from the South Plain area from Romania

English. Potato production is very high performing culture, but also very demanding environmental conditions (climatic) and technological (fertilization, protection). Potato yields are influenced by a complex of biological factors, environmental and technological. The strongest factor limiting production is drought period from May to September, when training and intense accumulation of tubers that occurs with great frequency in all areas of the country's culture. Potato varieties tested in 2008-2010 to the Research-Development Station for the Culture of the Plants on the Sandys Soils Dabuleni, Dolj County, Romania, regarding the dynamics of accumulation in tubers showed that the variety is an important factor in culture technology. Choosing the right variety of potato crop leads to success. To highlight the ability of potato cultivars to accumulate as early substances in tuber harvesting were done at 45 days of vegetation at 55 days after physiological maturity vegetation and potato plants. Production of tubers in the trade conditions of the area by plain ranged greatly depending on the variety grown and harvest time. Determinations on quantitative accumulation and nutritional quality of potato tubers were performed according to the variety and amount of fertilizer applied to sandy soils in climatic conditions in southern of Oltenia.

Romanian; Moldavian; Moldovan. Cartoful este cultura care realizeaza productii foarte ridicate, dar este si foarte pretentioasa la conditiile ecologice (pedoclimatice) si tehnologice (fertilizare, protectie). Productiile de cartof sunt influentate de un complex de factori biologici, ecologici si tehnologici. Factorul care limiteaza cel mai puternic productia este seceta din perioada mai-septembrie, în momentul formarii si acumularii intense a tuberculilor, ce apare cu mare frecventa, in toate zonele de cultura din tara. Soiurile de cartof testate la Statiunea de Cercetare-Dezvoltare pentru Cultura Plantelor pe Nisipuri Dabuleni _ Dolj, in perioada 2008-2010, in ceea ce priveste dinamica de acumulare a tuberculilor, au aratat ca soiul este un factor important in tehnologia de cultura. Alegerea corecta a soiurilor duce la reusita culturii de cartof. Pentru a pune in valoare capacitatea soiurilor de cartof de a acumula cat mai timpuriu substante in tuberculi s-au facut recoltari la 45 zile de vegetaþie, la 55 zile de vegetaþie si la maturitatea fiziologica a plantelor de cartof. Productia de tuberculi comerciabili, realizata in conditiile climatice ale zonei de campie, au variat foarte mult, in functie de soiul cultivat si de momentul recoltarii. Determinarile cu privire la acumularea cantitativa si calitatea nutritiva a tuberculilor de cartof au fost efectuate in functie de soi si de cantitatea de ingrasaminte aplicate pe solurile nisipoase, in conditiile climatice din sudul Olteniei.