Scientific Papers Series B Horticulture

Scientific Papers. Series B, Horticulture. Vol. LVII, 2013Print ISSN 2285-5653, CD-ROM ISSN 2285-5661, Online ISSN 2286-1580, ISSN-L 2285-5653AbstractRESULTS CONCERNING THE EFFECT OF FOLIAR FERTILIZERSAND GROWTH PROMOTERS TREATMENTS ON PRODUCTIONAND QUALITY OF TOMATO FRUITSJeni Gianina VOICU (SIMION)University of Agronomic Sciences and Veterinary Medicine of Bucharest,59 Marasti Avenue, postcode 011464, Bucharest, RomaniaCorresponding author email: gianina.simion@yahoo.comThe work presents results obtained in protected culture of tomatoes under different treatments with foliar fertilizers(Folimax, Agriphyte) and ecological growth promoter P& R. It wastaken in experience hybrid Balkan F1 and varietyGhittia. The foliar fertilizers and growth promoters treatments has good influence on production and quality of tomatofruits. If the best at production was the hybrid Balkan F 1 , the variety Ghittia was the best at quality. The biggestproduction was obtained by the hybrid Balkan F1 treated with Agriphyte (69.626 t/ha) and the smallest one it was thevariety Ghittia untreated – control (48.865 t/ha). The biggest content of vitamin C was registered at Ghittia variety inthe case of P& R treatment (21.52 mg/100g and the biggest content of lycopene was registered at hybrid Balkan F 1 forAgriphyte treatment (69.39 ppm). The content of soluble carbohydrates was almost constant and has slightly varied ataround 4.8%.Key words: Agriphyte, Folimax, P&R, quality, production.INTRODUCTIONBecause of the big request for consumption,tomatoes are the most cultivated vegetablespecies on protected crops from Romania.The benefits of this culture system are:possibility to obtain of sorts of vegetablesaccording to the request of the market;earliness; good prices; possibility to obtaintomatoes almost all year; big productions/ha(Voican and Lacatus, 2002).For obtaining good productions with maximumeconomic efficiency it needs to practice sometechnologies in which stimulating of growthand development of plants, fertilization andpest control are the most important works.In the production technologies can be useddifferent fertilizers, growth promoters andfoliar fertilizers.Researches on use of fertilizers in protectedcrops shows that use of foliar fertilizers hasvery good effects in vegetable crops in allgrowth and development phases (Davidescuand Davidescu, 2000; Lacatus, et al., 2005).Foliar fertilization is very used in vegetableprotected crops and it has some advantageslike: use of reduced concentration of mineralelements, easier application simultaneously131with pesticides and rapid correction ofnutritional deficiency (Voican and Lacatus,2002).Between foliar fertilizers, the literaturementions foliar fertilizers type F (231; 141;411), the product Cropmax (Ciofu, et al.,2004), liquid foliar fertilizer Folimax (Lacatus,2006).The growth promoters are used for theregulation of the processes of growth anddevelopment of plants especially when themicroclimate conditions are not favorable.Many authors recommended that the treatmentsmust be applied when the flowers arecompletely opened with a solution ofTomatoset, Tomafix, Duraset, or Tomato-stim.The paper presents partial results regarding theinfluence of the treatments with growthpromoters and foliar fertilizers on growth,development and production of tomatoes forprotected crops.MATERIALS AND METHODSThe main objective of the research has beendetermining the optimal variant of stimulationand foliar fertilization of tomatoes in protectedcrops in order to obtain early production of