375 THE INFLUENCE OF BIOFERTILIZING AND BIOSTIMULATING PRODUCTS ON THE PRODUCTION OF CORNICHON CUCUMBER HYBRIDS CULTIVATED IN HEATED SOLARIUMS Alexandra BECHERESCU 1 , Gheorghiţa HOZA 2 , Maria DINU 3 , Olimpia IORDĂNESCU 1 , Daniel POPA 1 1 Banat’s University of Agricultural Sciences and Veterinary Medicine “King Michael I of Romania” from Timisoara, 119 Calea Aradului, Timisoara, Romania 2 University of Agronomic Sciences and Veterinary Medicine of Bucharest, Faculty of Horticulture, 59 Marasti Blvd, District 1, Bucharest, Romania 3 University of Craiova, 13 A. I. Cuza Street, Craiova, Romania Corresponding author email: hozagh@yahoo.com Abstract The aim of this study was to determine the influence of foliar fertilizers, applied individually or in combination, on production characteristics and the production of pickled cucumbers grown in solarium, but also the combined effect of the two factors studied. The biological material studied was represented by two cucumber hybrids, SV 9007 and Kybria, and 3 fertilizers, Cropmax, Fury and Auxym. The study was placed according to the experimental technique for bifactorial experiments. The observations highlighted that the Kybria hybrid achieved the highest total production (80.2 t/ha) while the SV-9007 hybrid had the best production of 1st quality fruit, i.e. 65.6 t/ha of the total production of 72.8 t/ ha. The fertilizer product with the strongest influence on production and production parameters was Auxym, followed by Furia. However, the combination of the two products (Auxym + Furia) had the greatest influence on production in terms of quantity and quality. The results support the cultivation of cornichon cucumbers, the hybrid SV-9007 F1 and the application of the fertilization products Furia and Auxym in combination, during vegetation Key words: hybrid, phasal fertilization, production parameters, solarium culture. INTRODUCTION The beginning of a new crop in the assortment of vegetable crops in Romanian greenhouses occurred in the immediate period of the 1980s, namely the cultivation of cucumbers, which revolutionized the cultivation of cucumbers on the whole (Becherescu et al., 2016). Horgoş et al. (2007) identified at least three main reasons for obtaining productions of this new variety of greenhouse cucumbers in the years ’83-’85 (cucumbers with small cornichon-type fruits). These imply, first of all, solving an extremely acute problem at the time, namely the replacement of an unsellable production of cucumbers with long fruits in given periods of time (in the second half of May and June, but especially in cycle II). The second reason implies the increasingly pressuring requirements of the canning industry internally, and especially externally. Thirdly, the urgent need to reduce energy consumption for the second production cycle, on the background of the worsening energy crisis, had severe repercussions on the greenhouse industry, the heat requirements of cornichon crops in the second cycle being much lower or completely absent. Cornichon cucumber cultures in the last two decades has practically replaced, almost entirely, that of long cucumbers, both in greenhouses, but especially in protected spaces, both heated or unheated. Cornichon cucumber hybrids have a lower genetic yield potential than cucumbers with long or semi-long fruits (Hoza, 2003). The destination of the cornichon production for pickling by industrial facilities requires the harvesting of much smaller fruits (4-6 cm, 6-9 cm, sometimes 9-12 cm), with the effect of obtaining lower yields from a quantitative point of view (Ciofu et al., 2003). New cucumber hybrids with very high yield potential have appeared, the value of which depends on the cultivation technology applied (Dinu et al., 2009). The technological links Scientifc Papers. Series B, Horticulture. Vol. LXV, No. 1, 2021 Print ISSN 2285-5653, CD-ROM ISSN 2285-5661, Online ISSN 2286-1580, ISSN-L 2285-5653