EFFECTS OF SEED INOCULATION AND CROPPING SYSTEM ON CHEMICAL COMPOSITION OF SOME EARLY SOYBEAN VARIETIES

Abstract

In order to evaluate the influence of preceding crops and different inoculants applied to seeds, on some quality parameters (protein, fat and four fatty acids content: stearic, oleic, linoleic and linolenic) at three soybean varieties from 00 maturity group, a field polifactorial experiment was carried out in 2020, in the North West part of Romania (Amați village, Satu Mare county). The experiment was based on a split plot design, using plots of 700 m², on clay-loam soil, with a lower fertility potential. Three factors were analyzed in the experiment: the preceding crops with two graduation, inoculants for soybean seeds with two graduation and soybean varieties with 3 graduations. Onix, Felix and Cristina TD soybean varieties developed at Research and Development Station for Agriculture Turda (RDSA Turda) were used as a biological material. The chemical composition of soybean seeds was especially influenced by the genetic factor. A slightly increase in protein content was identified for Cristina TD variety, in the experimental variant with soybean included in 5 years rotation and when the seeds were inoculated with Polyriz S.