DETERMINATIONS OF THE TREE VIGOR AND ANNUAL GROWTH AT SOME WALNUT GENOTYPES FROM THE ROMANIAN NORTH-EASTERN AREA

The aim of this paper is to present behaviour of some autochthonous and foreign walnut cultivars in the Romanian North Eastern area conditions. Studies were done in 2016, having as research material that 14 walnut genotypes which were in the VIth year after planting grafted on Juglans regia L. as rootstock. Observations and measurements were done to find the behaviour of the plants in the growth process. The climate factors, the tree vigor through trunk cross-section area (cm2), tree height (cm), increases (cm) and number of the young shoots were analyzed. The weakestvigor of the tree showed ‘Sibişel’ (10.9 cm2), ‘Ovidiu’ (11.3 cm2), ‘Geoagiu 65’ (15.5 cm2), ‘Germisara’ (16.7 cm2), ‘Jupâneşti’ (17.1 cm2) and ‘Anica’ (19.5 cm2) with very significant negative differences compared with average variant as control. As the length of the young shoots, the highest values were registered at ‘Miroslava’ (106 cm) and ‘Velniţa’ (94 cm) genotypes

Ciclul biologic al viermelui merelor -cydia pomonellal., la soiuri de nuc în condiţiile ecositemului pomicol Iaşi

The purpose of this paper is to follow Cydiapomonella's biological cycle with the help of pheromone traps in order to warn the treatments and to know the evolution of the pest in the NE area of Romania in the case walnut tree growing. Another objective pursued is to effectively combat this pest with plant protection substances. The observations were made in 2017, having as research material 14 walnut genotypes, in the 7thyear since planting, being grafted on Juglansregia as rootstock. In case of variant 1 phytosanitary treatments with fungicides and insecticides were carried out and in the second variant (V2) no phytosanitary treatments were carried out, pest control being carried out by biotechnical means, using AtraPom synthetic sex pheromones traps. During this period the climatic factors, which influence the occurrence of the pest, were analyzed. Based on the observations made, the flight curve of the species was drawn in the studied area. Following the monitoring of the C. pomonella, we can warn the treatments according to the number of adults captured, as follows: for the first generation in the period 16-20.05.2017 and for the second generation in the period between June 25thto July 1st

Noi strategii de prevenire şi combatere a bolilor şi dăunătorilor la specia cireş

The research was carried out within the SCDP Iasi, in order to test ecological alternatives regarding the control of diseases and pests in the cherry species. The observations were made in 2019 having as research material 2 varieties of cherry (CĂTĂLINA, MARIA), grafted on mahaleb, the planting distance of 5X4 being in year VII from planting, the experience was placed on 4 experimental variants.The climatic conditions of this period were particularly favorable both for the evolution of the attack of the diseases (anthracnose and monilosis) and for pests. In the fight against diseases (moniliasis and anthracnose) the best results were obtained in the case of the chemical variant with Signum products 0.03%, Folicur Solo 0.075%, Mospilan 20 SG 0.03% and in the ecological variantthe best results were obtainedwith the products Deffort 0.3%, Copfort 0.3%, Mimox 0.2%, Laser 240 SC 0.06%

Evaluation of Keratin/Bacterial Cellulose Based Scaffolds as Potential Burned Wound Dressing

The study presents the preparation and characterization of new scaffolds based on bacterial cellulose and keratin hydrogel which were seeded with adipose stem cells. The bacterial cellulose was obtained by developing an Acetobacter xylinum culture and was visualized using SEM (scanning electron microscopy) and elementally determined through EDAX (dispersive X-ray analysis) tests. Keratin species (β–keratose and γ-keratose) was extracted by hydrolytic degradation from non-dyed human hair. SEM, EDAX and conductometric titration tests were performed for physical–chemical and morphological evaluation. Cytocompatibility tests performed in vitro confirmed the material non-toxic effect on cells. The scaffolds, with and without stem cells, were grafted on the burned wounds on the rabbit’s dorsal region and the grafts were monitored for 21 days after the application on the wounds. The clinical monitoring of the grafts and the histopathological examination demonstrated the regenerative potential of the bacterial cellulose–keratin scaffolds, under the test conditions