Doina Clapa

VALORIFICATION OF DISINTEGRATED LANDS FROM TRANSYLVANIA THROUGH CULTIVATION OF HIPPOPHAE RHAMNOIDES

The Transylvanian hillock area is geographical characterised through a wave like landscape, sunny slopes with no forest vegetation, frequently exposed to different forms of erosion. The pedogenetical cover on these slopes are represented by regosoils, erodisoils, soils with low trophicity, for agricultural usage. A very well adapted specie for these conditions is Hippophae rhamnoides. Hippophae rhamnoides is considered to be one of the most valuable specie of brushes from our spontaneous and cultivated flora, appreciated in different domains such as pharmacology, food industry, animal feeding, forestry and even in landscaping. Its fruits contain over 20 substances with an important role in the regularization of the metabolism of the humans, having both a therapeutical and curative role in preventing and treating eye diseases, skin problems, avitaminoses, diseases of the neural system, endocrine system etc. It is a unisex dioical plant, of 1,5-3,5 m (in some areas can reach up to 8-10 m). It produces fruits after three years from planting and it has a biological life of 18-20 years. It is a plant with a high adaptability, being one of the best colonizing plants. It valorizes the lands with different types of soil, wet and dry, with different textures (from sandy to clay), especially the sands from the river banks. With a powerful root system, it expands rapidly as it rots can go up to 20 m. The planting distance is 3x2m, in the plain conducting way, or 3,5x2,5 m in the classical conducting way. For polenisation at planting, one must respect the percent of 1 male plant to 6-8 female plants. It has a very high growth in the years 3-5 when it produces great amounts of branches, and having a production of 3-12tones/ha, and at maximum it has a production of 25 tones/ha.

ASPECTS REGARDING THE IN VITRO ROOTING OF ROSES

At SCDP Cluj in vitro rooting experiments were done for roses, varieties Rusticana and Simina, in order to obtain plants for ex-vitro acclimatization. The explants used for rooting consisted of 1.5-2 cm long shoot fragments excized from plantlets in the multiplication phase on modified MS medium, with 1 mg/l vitamin B1, 0.7 mg/l BAP, pH adjusted to 5.8. The media were gelled with 5 g/l Plant-agar and autoclaved for 20 minutes at 121 °C. For rooting, the same medium was used, but without BAP.

THE INFLUENCE OF WATER TREATED BY PHYSICAL METHODS UPON THE GROWTH OF SOME DENDROLOGICAL SPECIES

In 2006, at Fruit Research Station Cluj were carri ed out experiments regarding the influence of water treated by some physical methods upon the growth of some dendrological varieties. The results of the study are presented i this poster. The experiments were made at the pot plants from Weigela florida “Variegata” and Thuja occidentalis “Smaragd” species and were used 3 variants of physical treat ed water in comparison with untreated water. During each wateri ng, it was used the same water quantity from each variant. The water variants used for watering, for both spe cies, were: V1untreated water; V2modified water by Ancu-Dinc ă effect; V3magnetized water with magnet, produced by Energet ix wi h magnetical field intensity of 1200 Gs; V4vibrated water. The experiment was organized in 4 repetitions, for 5 plants/repetition, for each species. The plants’ growth was monitored. At both species, it was found a positive influence, but insignificant in the case of watering with wate r modified by Ancu-Dincă effect and distinguishable positive influences in the case of watering with magnetised water. In conclusion: 1. Water magnetised by Energetix permanent magnet, by maintaining the water a certainn period of time in the magnetic field, stro ngly influences, positively, the growth of the Weigela florida „Variegata” and Thuja occidentalis „Smaragd” plants. 2. Water physically modified by Ancu-Dinc ă effect, also positively influences the growth of the two species, but in a less evident way (not significantly), and less economically.