Continued population growth, reduction of agricultural lands require harnessing the productive potential of traditional crops by implementing new technologies and identifying, acclimatizing and introducing new species of plants that use more efficiently solar energy, soil and water, ensuring food for humans and animals and, on the other hand, serve as a source of raw material for various industries (food, textile, pharmaceutical, cosmetics etc.). The development and modernization of our country’s agriculture is related to the revitalization of the animal breeding sector along with the implementation of new genotypes of animals and diversification of fodder production, balanced in terms of quantity and quality throughout the year, suitable for the physiological requirements of animals, and qualitative products as required in the market.   It is well known that the productivity of the grasslands from the Republic of Moldova is very low, constituting 300 - 500 kg/ha of hay, and the share of fodder leguminous plants is decreasing. The problem of forage with high protein content is still an actual one in livestock farming. Traditional legume crops, such as alfalfa and clover tend to exhaust with the lapse of time, and after 3-4 years their productivity gets considerably lower.     Collection of non-traditional fodder plants of the Botanical Garden (Institute) of ASM counts near 290 species and cultivars, including 71 leguminous plants. The fodder leguminous plants play an important role in increasing the quality of feed, due to a significant contribution in protein, vitamins and minerals, which raise the nutritional value of the feed and the livestock production. In order to redress the situation regarding the increase of the productivity and the quality of forage, it is necessary to extend the range of fodder leguminous species and to carry out reseeding works.  As a result of the research on mobilization of 25 species of the genus Medicago L., it has been established that species Medicago agropyretorium Vass., Medicago polychroa Grossh., Medicago trautvetteri Sumn., Medicago tianschanica Vass. and Medicago varia Mart. reach a productivity of 17.921.4 t/ha, at the first harvest, exceeding Medicago sativa L. with 8-27%, the nutritional value of the natural forage is of 0.20-0.25 nutritive units/kg and the digestible protein content – 170.0-211.6 g/nutritive unit. The species Medicago agropyretorium, Medicago trautvetteri and Medicago tianschanica are characterised by a higher degree of tolerance to abiotic factors and live longer.           The most promising species of the genus Astragalus L. is Astragalus galegiformis L., native to Caucasus Mountains has a productive potential, at the first mowing in the 3-5 years of vegetation, of 64.2-71.2 t/ha fresh mass balanced with digestible protein 127.0-145.8 g/nutritive unit, Astragalus ponticus Pall. is suitable for reseeding grasslands, Astragalus sulcatus L.   – recovery of saline soils. The promising perennial plant species of the genus Lathyrus L.: Lathyrus latifolius L., Lathyrus pisiformis L., Lathyrus sylvestris L. are characterised by a high content of dry matter (20.3128.60%), nutritive unit balanced with digestible protein (166.68-259.00 g), high content of phosphorus but also – of nitrates; the genus Coronilla L., crown vetch Coronilla varia L. allows obtaining 9.3 t/ha nutritive units and 1600 kg/ha digestible protein, and the genus  Onobrychis Mill. : Onobrychis  tanaitica Spr. and Onobrychis inermis Stev. – about 10 t/ha nutritive units and 1800 kg/ha digestible protein. Galega orientalis Lam., native to Caucasus, is a promising species, the autochthonous cv. Speranța, in the 3rd-4th years of vegetation, has an accelerated growth and development rate. Its productivity reached 79.8 t/ha green mass, 15.1 t/ha nutritive units provided with 2176 kg/ha digestible protein. The green mass of Galega orientalis is used for preparation of hay, leaves remain on the stem, which helps ensure higher forage value. 100 kg of hay contain 71-74 nutritive units, 750-793 MJ/kg metabolizable energy for cattle and 9.16-12.2 kg digestible protein.  Valuable forms of these species can serve as starting material in crop improvement and implementation of new fodder leguminous plants for production of fodder and phytoremediation and use of polluted and eroded lands.