## 3 Results
### Favorability for Medicago sativa L.  
As a result of the GIS analysis carried out for the classification of the territory of Bihor county by favorability classes for the alfalfa culture, the favorability map for this species was obtained by taking into account the eight ecological factors considered as determinants.  
In the high favorability class (characterized by rating grades higher than 60 points), the area of the Low Plain of the Cris Rivers is highlighted through its extended areas that offer very good conditions for alfalfa on 230.8 km\({}^{2}\) and medium conditions for other plants on 790.5 km\({}^{2}\) (Figure 4).  
A high favorability for the cultivation of this culture was also identified in the Miersigului Plain on 218 km\({}^{2}\), in the Buduslaului Plain on 103.7 km\({}^{2}\), in the Barcaului Plain on 28.6 km\({}^{2}\), and in the Valea lui Mihai Plain on 86.1 km\({}^{2}\), etc.  
In the category of landform subunits, we can identify in the class of small and medium hills the Fertisagului Hill, representing 220 km\({}^{2}\) classified in the medium favorability class for alfalfa; the Barcaului Hills, on 298 km\({}^{2}\), the Hidiselulu Hills on 215 km\({}^{2}\).  
Figure 4: Favorability classes for alfalfa at the level of the major landform units from Bihor county.  
The restrictions imposed by climatic, slope, or soil conditions highlight extensive territories, such as the Plopis Mountains, the Padurea Craiului Mountains, the Iadei Mountains, Vladeasa Peak, the Bihorului Mountains, or the Codru Moma Mountains, as they are characterized by very low favorability (characterized by rating grades within the range of 0-20) and low favorability (with rating grades between 21 and 40).  
When classifying the area of the administrative territorial units on favorability classes for the alfalfa culture, we may notice Santandrei (its territory is situated almost entirely in the high favorability class, 98.9% of the administrative territory of the commune), Gepiu (82.5%), Girisu de Cris on 76%, Oradea on 65.8%, Diosig on 63.5%, and Sannicolau Roman on 61.3% (Figure 5).  
Knowing the territories that offer the best conditions for alfalfa is extremely important, especially for investors, but also for farmers who want to obtain economic profit from the territorial areas they own. In addition to the profit from the mass production of green alfalfa, dry fodder and the profit from harvesting and selling alfalfa seeds (in the case of seed culture), coupled plant support (CPS) is provided for territories cultivated with alfalfa, following the submission of applications to the Agency for Payments and Intervention for Agriculture (APIA) [54].  
In fact, as a result of offering help to farmers, the area cultivated with alfalfa increased by 11% in the years 2014-2018 [54]. Increases in production were identified at the national level and at the level of alfalfa production by about 15%. The medium production per hectare calculated at national level reached 15.83 tons [54]. At the level of Bihor county, this increase is significant, as there is a growth tendency in production as well as in cultivated areas (Figure 6).  
Taking into account the fact that both the production per hectare and the cultivated area have a tendency to increase, there is a need to carry out an economic efficiency study with a predictive role of calculating the potential incomes obtained on categories of alfalfa varieties.  
The advantage of carrying out such an analysis will not only be to classify all agricultural plots by favorability and/or restriction classes for the alfalfa cultivation, but it will also identify those agricultural parcels with the highest economic income as a result of alfalfa culture.  
Figure 5: Percentage distribution by favorability classes at the level of administrative territorial units with the largest extension of favorability classes II and III.