Sturgeon farming is practiced in rearing systems with different types of fresh water, such as surface water, depth water (including geothermal water) and industrial water. If at the beginning of twentieth century sturgeon farming was successfully applied in ponds, nowadays, with the need for quantitative and qualitative productions imposed by the principles of economic viability in the context of ensuring the norms of the European Union, high intensity recirculating rearing systems have been developed. Nutrition plays a central role in sustainable aquaculture and, as a result, research on food resources as well as production costs continues to dominate aquaculture worldwide. According to literature, sturgeon fingerlings with a length of 2,5 – 12,5 cm require a daily ration of 5 - 7% of body weight per day. The optimization of feeding rations for Acipenser baerii related to the pre-development stage in a recirculating aquaculture system was carried out accordingly by following the biotechnological indicators (especially the growth increase) which indicate a favourable growth rate of the biomass.

Organic farming is becoming more and more important and is constantly expanding. This development is supported by the growing demand of consumers for organic agricultural products, who are becoming more aware and interested in health insurance through the consumption of products, to which are added the requirements of society for sustainable agricultural development and the multitude of favorable effects at the level of the farm and the environment. Organic farming is an agricultural method that aims to produce food using natural substances and processes. Therefore, it has a limited impact on the environment because it encourages: responsible use of energy and natural resources, conservation of biodiversity, conservation of regional ecological balances, increasing soil fertility, maintaining water quality.EU regulations on organic farming aim to provide a clear structure for the production of organic products throughout the EU. Călărași County has, according to specialists in the field, the most productive land in Bărăgan. The purpose of this paper was to present the situation of organic agriculture in relation to conventional agriculture in Calarasi County, in terms of cultivated areas and average production, as well as a brief analysis of data on access to European funds in the county