Proceedings Volume 2010 (format .pdf) - SimpBTH

Our aim is getting minitubers - prebase material coming fromvitroplantlets transplantation experiments mounted in the substrate industry since2009.The research objectives was to follow precocity influence on the ability toproduce minitubers.1. MATERIAL AND METHODBiological material: we used Christian, Roclas (figures 1,2) and Ostaracultivars;Other materials: culture trays for pots with industrial substrate made ofgalvanized sheet, with sides of 0.9 m and height of tray of 10 cm provided withplug for drain and refresh with new solution;-pots with volume of 1.0L;-compound garden with soil 1:1, for setting up the potato culture (for soilcontrol);-solid substrates for plant roots in hydroponic system consisting of inertinorganic materials resulting from industrial processes simpler like, expanded clay,perlite;-fertilizers- crop nutrient solutions without soil - nutrient solution wasprepared on the basis of soluble fertilizer, ,, Universol " (produced by Scott -Netherlands);- foliar fertilizers: Cropmax, Agroleaf;- calcium nitrate, the correct response to nutrient solution wasapplied to the use of calcium nitrate containing 15.5% total nitrogen (of which1.1% ammonium nitrogen, calcium 19.0% Ca);- pesticides:- ELECTIS 75 WG - mildew treatment;- ACTARA 25 WG - pest control.Trays were made of galvanized sheet, with sides of 0.9 m and height oftray of 10 cm provided with drain plug of solution obsolete.Pots used were of medium size, with volume of 1litru.Solution of the product was prepared from Univesol. On the first step waswatched the higher concentration of nitrogen, then the second stage higherconcentration of phosphorus.For better growth of plant, was applied to start a foliar fertilizationCropmax product (the dose 1l/ha), when plants were 15-20 cm high. Whentreatment was applied for first mildew, Electis product (1.5 kg / ha) was appliedand Agroleaf product (5kg/ha); before flowering Agroleaf P (3kg/ha-) was applied;two weeks after flowering Agroleaf K (5kg/ha) was applied. Vegetationinterruption was performed at 70 days of plants emergencing formed fromminitubers, planted in pots, with the transfer of plantlets from the laboratory. With70