Castaldo, A., Pariani, A., Ferrán, A., Giorgis, A., Lamela Arteaga, P., Denda, S., Antonucci, P., Quinn, N., and Hecker, F.
Alfalfa (Medicago sativa) is one of the main forage crops for cattle feeding in Argentina. It is necessary to have information in the area of influence of the Faculty of Veterinary Sciences of the National University of La Pampa on the adaptation and productive behavior of alfalfa varieties offered in the market. Therefore, in the General Pico area, the Experimental, Experimental and Productive Unit of this institution, a trial of two alfalfa commercial cultivars of different degree of latency (intermediate and short) was carried out, applying two seed densities (8 And 16 kg / ha) and two fertilization doses (0 and 60 kg of superphosphate / ha). This publication evaluates the productive and economic results of the first year of production. On average, the intermediate latency variety produced more dry matter than short latency (P <0.05), but no significant differences were observed between seed densities. A tendency was found in favor of fertilized versus unfertilized plots. The economic analysis showed significant differences between variety and densities, but not with respect to fertilization. [ABSTRACT FROM AUTHOR]