Determination of biological indicators of quality of grassland soils in areas of the Cauto Basin.
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Abstract
The loss of the productive capacity of grasslands is largely due to soil degradation. The research was carried out in areas of the Cauto Basin dedicated to the grazing of large cattle and as a positive control an area of ??the Pastures Experimental Station of the "Jorge Dimitrov" Agricultural Research Institute, belonging to the Bayamo municipality, Granma province, Cuba. With the objective of determining biological quality indicators of grassland soils. For the selection of grasslands, the Geographic Information System was consulted. The results obtained showed higher levels of enzymatic activity in the area of ??the Experimental Station where they were obtained with 0.18 mg of NH4, equivalent to 382.49 mg of NH4/kg., the highest ammonifying activity expressed in 0.09 mg of NH4, equivalent to 190.8 mg of NH4/ kg of dry soil and the highest values ??of nitrifying activity 0.18 mg of NO3 equivalent to 382.39 mg NO3/ kg of dry soil followed by the Triangle areas with 0, 11 mg NO3 equivalent to 250 mg NO3/kg dry soil and Progreso with 0.07 mg NO3 equivalent to 158.62 mg/kg dry soil. The sensitivity of the biological indicators determined to the variability manifested in the characteristics of the soils and the management activities of the grasslands was evidenced.
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