Study on quality of oriental tobacco seedling, grown in float tray system in depend of different volume of substrats cells
Keywords:
tobacco seedlings, float tray, float system, oriental tobacco seedlingAbstract
Tobacco is an economically important crop in Bulgaria. To improve tobacco production is necessary good agricultural practice, which also involves the implementation of new technologies for production of tobacco. The modern method of float tray (float system) is responsible for this requirement - healthy seedlings suitable, aligned in height. This technology was developed for use in large-leaf tobacco - Virginia, Burley. These tobaccos have relatively low density in the field – 20 000-25 000 plants / ha. In recent years, there is increasing interest in this technology from growers of oriental tobacco, since its field density is up to 120 000 plants / ha. This density at current volumes of substrate cells requires significant areas with float trays. Quality seedlings should be of optimum dimensions: length of stem 14 - 15 cm and a thickness of 4.5 -5.5 mm. The aim of the study was the quality of the seedlings of Oriental tobacco, grown in a water bed in the different volumes of cell substrate.
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