Title : Alfalfa production (Medicago sativa L.) fertilizing the soil with organic sources based on vermicompost
The research work presented below was carried out in the autumn - winter cycle of 2018 in the experimental field San Antonio de los Bravos of the UAAAN-UL, in Torreón Coahuila Mexico. Under a design of random block method experiments; establishing 6 fertilization treatments with 5 repetitions each. These were as follows: 3 organic sources; vermicomposta, leachate of vermicomposta and hydroponic nutrient solution, 2 inorganic sources; MAP (phosphorus) and Magnesium Sulfate; and finally a control block in which no fertilizer was applied. The research was formed with 6 treatments (A, B, C, D, E, F) and 5 blocks for each of them; The definition of them and their doses are presented below. The sowing date was in the 4th week of October 2018 and the sowing density was 40 Kg / ha. The size of the randomized blocks was 7.5 m2. For the statistical analysis of the ANOVA, the FAUANL Olivares software v. 2012 was used for an α of 5%, in addition, the analysis of the marginal utility was performed by the Palencia method (2012). With the variable green forage weight per m2 for the treatments, they generated values that indicate that there is no statistical difference between them; that is p> 0.05, in the block location it was where a significant statistical difference was obtained between the five blocks compared; that is p <0.001. Therefore within the defined blocks; It was number V that presented the highest average production. When comparing marginal utility; it was the green forage production of the control (F) that generated the greatest profit with $ 35,375 pesos / ha, followed by the inorganic source MAP (C) with $ 35,227 pesos / ha. ; and finally the vermicompost (A) organic source with a profit of $ 28,084 pesos / ha.