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Soybean is in high demand for both human and animal consumptions because of its nutritional values and potential use of biodiesel product. This crop is broadly cultivated on world arable soils with low nutritive elements. Investigation of soybean yield and related yield component traits with different types of fertilizer and different doses will help improve field management to optimize soybean production. The paper aimed to present the effects of different mineral fertilizers rates on soybean yield and yield components in 13 soybean cultivars from 3 different maturity groups: very early (000), early (00) and semi-early (0) genotypes. The results from this study reveals that positive response to mineral fertilization was mostly influenced by genotype and also maturity group (MG). A positive yield response to fertilization was observed in semi-early soybean genotypes at the 150 kg/ha rate of fertilization with an increase of production of 175 kg/ha compared to the mean of the experimental variants. Data obtained in this experiment showed that it is possible to achive high soybean yields without supplying fertilizers on soils with good nutrient content. [ABSTRACT FROM AUTHOR]

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). [ABSTRACT FROM AUTHOR]

Within the European Union various legislative instruments have been promoted for the protection and sustainable management of water sources. Their purpose is to reduce water pollution caused or induced by nitrates from agricultural sources and to prevent any new pollution of this type. The Action Program for the Protection of Waters against Pollution with Nitrates from Agricultural Sources implements the measures provided for, in the Code of Good Agricultural Practice. It establishes the specific responsibilities of structures under the subordination of the Ministry of Agriculture and Rural Development and the Ministry of Environment and Climate Change. The provisions of the program are mandatory for all farmers managing or holding agricultural holdings, but also for the local public administration authorities of communes, towns and municipalities on the territory of which there are agricultural holdings. Control of compliance with the water protection action program addresses various indicators including compliance with the ban on fertilizer application, crop rotation to limit nitrogen losses to water bodies, manure storage capacity on individual or communal platforms, etc. The monitoring activity of the program is carried out by the Romanian Water Administration through the Water Basin Administrations regarding the state of the water sources and the National Research Development Institute for Pedology, Agrochemistry and Environmental Protection - ICPA Bucharest, with the support of the Office of pedological and agro-chemical studies in agriculture. This paper contains information on the requirements and provisions of the action plan for the protection of waters against pollution from agricultural sources. [ABSTRACT FROM AUTHOR]