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Indreias A.,Research Station for Fruit Growing Constanta
Acta Horticulturae | Year: 2010

The research was carried out at the Research Station for Fruit Growing Constanta, Romania, during 6 years, to study the behaviour of 5 generative rootstocks for apricot tree in the research nursery fields: Constanta 14, Constanta 16, C74-8-P2, C74-8-P5 and RR 15-20. All rootstocks were grafted with four Romanian apricot cultivars: Tudor, Fortuna, Orizont and Traian. The results of these investigations showed that the rootstocks were suitable for the tested apricot cultivars. The rootstocks, in the seedlings field, proved to be suitable because they had adequate seed germination, seedlings growth and good seedlings yields. The rootstocks-cultivars combinations gave good yield of standard grafted trees. Scion - rootstock compatibility was satisfactory with no external deformation. Source


Indreiasa A.,Research Station for Fruit Growing Constanta
Acta Horticulturae | Year: 2011

The study was carried out during a period of 7 years at the Research Station for Fruit Growing Constanta, Romania. An experimental orchard was planted in Spring 1997, at 4.5×4 m, to investigate the interactions between 5 rootstocks and 2 cultivars ('Springcrest' and 'Redhaven'). The rootstocks tested were T16 and 4 intraspecific hybrids: Tomis 39 (T16' x Hui Hun Tao), H. CT. 83. 07. 024 (T16 x Siberian C), H.CT. 84.13.005 (Bailey x Siberian C) and Tomis 28 (T16 x Bailey). We evaluated production per tree and hectare, trunk cross-sectional area, shoot growth, average fruit weight, fruit size, juice acidity and fruit dry matter and stone weight ratio. There were significant differences among rootstocks in productivity, tree growth and fruit size for both cultivars. Significant differences were found between cultivars for most observed parameters. Fruit acidity and dry matter were similar for rootstocks and the studied cultivars. Source


Indreiasa A.,Research Station for Fruit Growing Constanta
Acta Horticulturae | Year: 2011

We studied the behavior in the nursery of six rootstocks for peach trees: three from Romania (T16, Tomis 28 and Tomis 39) and three from other countries (PSC 12 from Italy, AID1 and AID2 from Greece) at the Research Station for Fruit Growing in Constanta, Romania. We compared seed germination and performance in the nursery. The rootstocks were grafted with 5 cultivars in the nursery: 'Delta', 'Cora', 'Stark's Delicious' (nectarine cultivars), 'Raluca' and 'Redhaven' (peach cultivars). We found that Romanian rootstocks had smaller seeds than rootstocks from Italy or Greece. The rootstocks had differing seed germination percentages from good to very good, and the seedlings had vigorous growth and very high yields. The rootstocks behaved very well at rooting and in the grafting process and had high production of grafted trees ha -1. They had good compatibility with the scion cultivars and exhibited no external deformations. We also observed different vigor in the nursery, depending on rootstock and cultivar. These results showed that Romanian peach rootstocks were good stocks for peach and nectarine production. Source


Trandafirescu M.,Research Station for Fruit Growing Constanta | Trandafirescu I.,Ovidius University
Acta Horticulturae | Year: 2010

The high density system in apricot trees culture has propagated a lot of damaging pests such as: Anarsia lineatella Zell, Cydia molesta Busck and Myzus persicae Sulz. The utilization of insecticides as the main method of control of these insects has already induced pest resistance and exerts a negative impact on the environment, soil texture and structure, accumulation of toxic residues in soil and fruits, etc. To prevent all these negative aspects, studies on the biological efficacy of the products based on plant extracts (Artemisia apsinthium, Chelidonium majus, Allium sativum) were carried out. The experiment included the 'Tudor' apricot cultivars. To find out the optimum timing for application, pheromone traps like 'Atralin' and 'Atramol' were employed and the sprays were done only when the damage economic threshold (D.E.T.) was exceeded, namely 80-100 butterflies per trap, per week. The results recorded with those products applied to control Anarsia lineatella Zell., Cydia molesta Busck and Myzus persicae Sulz., have enabled to estimate them as a certain alternative to the pest chemical control. The product values will be enhanced having in view they are harmless to human beings, to the environment and the useful entomofauna, and not to maintain their toxic residues in fruit. Source


Indreias A.,Research Station for Fruit Growing Constanta | Dumitru L.M.,Research Station for Fruit Growing Constanta | Baciu A.A.,University of Craiova
Acta Horticulturae | Year: 2013

Research carried out at the Research Station for Fruit Growing Constanta, Romania, studied the behaviour in the nursery and orchard trials of five rootstocks obtained in the breeding programme: three candidates 'Tomis 39', 'Tomis 28' and 'T16', were already registered, and two, H.CT. 83. 07. 024 and H.CT. 83. 07. 005, were new hybrid selections. These rootstocks were evaluated in the nursery, by grafting 8 scion cultivars: 'Cora', 'ARK 134', 'Stark Delicious' and 'Anemona' (nectarines), 'Redhaven' and 'Raluca' (peaches), 'Stark Saturn' and 'Filip' (flat peaches). Rootstocks grafted with 'Redhaven' peach cultivar were studied in the orchard. A grafting trial in the nursery resulted in trees with different vigour, depending on either the rootstock or cultivar. All rootstocks showed excellent compatibility with all peach cultivars tested. All rootstocks performed well in the orchard, showing good compatibility and high yields. Source

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