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Soybean is one of the most important leguminous crops due to its high oil and protein content with a significant role in nutrition. Micronutrients for soybean growth and development are very important and foliar fertilization is used to overcome environmental stress and help soybean plants to fill their nutritive needs. The research was carried out in 2020 by the Soybean Breeding Laboratory from the Agricultural Research and Development Station in Turda, Romania. Foliar fertilization had both positive and negative effects for 1000-grain weight and yield however, quality traits do not seem to be influenced by applying supplement of microelements during the vegetation period. The research suggests that genotype is the determining factor in the efficiency of foliar fertilization. In this sense, the present experiment will continue to bring answers regarding the effects of foliar fertilizers on some soybean genotypes.

Soybeans (Glycine max L. Merril) is the world’s most important seed legume and she is considered a basic food with a high nutritional value. The aim of this study is to evaluate the influence of two types of chemical complex fertilizers (NPK 27:13.5:0 and NPK 16:16:16) with four levels of fertilization (unfertilized, 150 kg/ha, 200 kg/ha and 250 kg/ha) on the main soybean growing stages in 2019. Field experiments were conducted in the soil and climate conditions of the Agricultural Research and Development Station from Turda. The vegetation stages of the studied soybean genotypes were influenced by: atypical climatic conditions of this year and also the type of fertilizer and the fertilization dose. By analyzing the experimental data, it was noted that one genotype had longer growing season (Raluca TD variety: 135-140 days), and three genotypes had shortest growing season (Perla variety: 122-125 days; Carla TD variety: 121-123 days; T-295 line: 121-123 days).

Soybean is one of the most important sources of vegetable oil and protein. The aim of this study is to evaluate the behavior of 75 European soybean genotypes from four maturity groups regarding the influence of climatic conditions of 2020 on soybean main growing and development stages. The experiment was conducted at the ARDS Turda in 2020, using a complete randomized block design with three replications. Dates of emergence (VE) and beginning of flowering (R1), were recorded for all 75 soybean cultivars from each of the four maturity groups (000 to I). Results obtained show that growing, and development stages of the studied soybean genotypes are according both with: thermal units and daily period from sunrise to sunset. Effects of daylength and temperature on soybean development were estimated. The rate of development to flowering was fastest for the very early genotypes than for genotypes in the semi-early maturity group (MG).