ISSN: 2320-5407 Int. J. Adv. Res. 6(12), 131-136 131 Journal Homepage: -www.journalijar.com Article DOI:10.21474/IJAR01/8123 DOI URL: http://dx.doi.org/10.21474/IJAR01/8123 RESEARCH ARTICLE STUDY ON BIOMETRIC INDEXES, PRODUCTIVITY AND QUALITY OF SOYBEAN WITH USAGE OF FERTILIZER PRODUCTS OF „AGROPOLYCHIM“ AD. Dragomir Plamenov 1 , Pavlina Naskova 1 , Bojka Malcheva 2 and Yordan Iliev 3 . 1. Department of Plant Production, Technical University – Varna, Varna, Bulgaria. 2. Department of Soil Science, University of Forestry – Sofia, Sofia, Bulgaria. 3. Department “Agrochemistry and Soil Science”, “Afer Bulgaria” EOOD. …………………………………………………………………………………………………….... Manuscript Info Abstract ……………………. ……………………………………………………………… Manuscript History Received: 01 October 2018 Final Accepted: 03 November 2018 Published: December 2018 Keywords:- Biometric indexes, productivity, quality, soybean, fertilizer products. In the present experiment has been studied the impact of six fertilizer products of „Agropolychim“ AD over basic biometric indexes, the productivity and quality of soybean. For the purpose on a training- experimental field of “Plant production” department has been set an experiment with variety PR91M10. The results show that with largest height distinguishes the control, but the difference in comparison with the following it as per value three fertilizer variants is untrustworthy. There lacks proofness of the differences between the separate fertilizer products as per the indication number of beans on a plant (the value is highest with usage of ammonium nitrate), except for the fertilizing with UAN. The analysis of the data for number of seeds as per a plant indicates that the variant with DAP produces most, but the following it as per value three variants do not differ reliably from it. The seeds are best fed as a result of fertilizing with NPK and UAN. The data for productivity display statistically proved superiority with usage of MAP and DAP in comparison with the other products included in the experiment. The biochemical data display that with fertilizing with MAP is obtained a soybean with the highest content of protein and with lowest oiliness, and it is highest at the variant with UAN. Copy Right, IJAR, 2018,. All rights reserved. …………………………………………………………………………………………………….... Introduction:- Soybean has s high commercial value and high concentration of protein, about 40%, calcium, phosphorus, fiber, and in addition it is cholesterol free (Hassan et al., 2010). It plays an important role in provision of food, cash and animal feeds (Mugendi et al., 2010). Soybean has potential to fix N from the atmosphere through biological fixation (Nieuwenhuis and Nieuwelink, 2002). Through research, it has been demonstrated that some varieties of this crop have the ability to fix nitrogen from 44 to 103 kg N ha -1 annually (Sanginga, 2003). Although N fertilization of soybean is not a common practice there is speculation that the ability of soybean to fix atmospheric N is not always adequate for maximum yield (Weber, 1966; Wesley et al., 1998). There a number of factors influencing soybean N fixation and the response to applied N. Sorensen and Penas (1978) concluded that soil temperature, moisture, and pH affect soybean response to applied N. Starling et al. (1998), Afza et al. (1987) and Wood et al. (1993), reported that although soybean obtains N through symbiotic fixation, application of a N starter fertilizer has resulted in Corresponding Author:-Dragomir Plamenov. Address:-Department of Plant Production, Technical University – Varna, Varna, Bulgaria. .