IMPACT OF FOLIAR FERTILIZATION ON PRODUCTIVITY OF NEW INTRODUCED CULTIVARS OF PADDY RICE

The interest to the introduced rice cultivars (Oryza sativa L.) is explained by thesearch for more suitable varieties with good adaptability and high yield to begrown under the agro-climatic conditions in Bulgaria. The new foliar treatmentproducts on the market - Folur, Amalgerol and Lithovit, have also provoked ourinterest. The survey was carried out in 2013 - 2015, applying the two-factor fieldexperiment following the split plot method. Two Turkish - Osmanchik 97 andGala, along with four Italian cultivars – Lince, Cameo, Puma and Brio were set asfactor one. The foliar product Folur (2 l/da), Amalgerol (1.2 l/da) and Lithovit(0.300 kg/da) were set as factor two. The following factors were studied:phenological development of the cultivars, productive tillering capacity and yield.It has been specified that Osmanchik 97 and Gala had a shorter vegetative period.Lince stood out against the 6 tested cultivars by highest tillering results – 4.70number of tillers/plant and was sharply outlined from the standard – Osmanchik97, Puma and Brio. The tested products Folur and Lithovit had proven their effecton the formation of more productive tillering capacity – by 7.7% and 13.1%respectively. The highest yield was observed with Cameo (954.5 kg/da) and Brio(949.1 kg/da), which surpassed the Osmanchik 97 (control) by 8.6% and 8%respectively. The Amalgerol treatment proved to have the strongest positive impacton productivity and increased the average yield of the tested cultivars by 11.3%