Browsing by Author "Mangui Ichina, Jessica Anabel"

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    “Evaluación de la respiración del suelo, con la utilización de dos métodos de determinación (Solvita y KOH) de cinco sistemas productivos en tres sectores de la Provincia de Cotopaxi”
    (Ecuador : Latacunga : Universidad Técnica de Cotopaxi (UTC), 2024-08) Mangui Ichina, Jessica Anabel; Chasi Vizuete, Wilman Paolo
    Soil respiration is a process through which the soil exchanges gases with the atmosphere, through this respiration, the soil releases carbon dioxide (CO2) and consumes oxygen (O2) for the decomposition of organic matter, this process is crucial for the health of soil ecosystems.The present research was carried out in the of Salache, Isinche and Carrillos localities in the Cotopaxi province, with the objective of evaluating soil respiration in five production systems (traditional, agroecological, conventional, degraded and natural), for which two methods of determination were used Test de Solvita® and Potassium Hydroxide (KOH) taking into account that this parameter reflects biological activity, also involves the production of carbon dioxide and the decomposition of organic matter. For the determination using the Solvita Test, 30 g of each prepared soil sample was use, the gel changes color in the presence of CO2, allowing for a visual estimate that is compared with a colorimetric scale, to stablised the Potassium Hydroxide (KOH) was used 20 g of each soil mixed with ddH2O so prepare a solution 0.05M KOH and was determined the CO2 released by the soil is absorbed by the KOH, forming potassium carbonate (K2CO3), which is then used for comparing the results of both methods. From the results obtained in the Salache area, the (natural) system is evidenced with a ratio of 11,67mg CO2/ sample, giving a high mid-range while the (traditional) system has 9.84 mg CO2/simple with an ideal range, while in the Isinche area of Infantes it is evident that the systems (degraded and traditional ) is 7,44 mg CO2/sample, while that incubation of KOH the system (natural) has a value of 9,36 mg CO2/sample and in the Carrillos area shows that the (degraded and traditional) system is the 18,23 mg CO2/sample, and the incubation KOH the system (conventional) is 9.70 mg CO2/sample. The two methods usedare valid for measuring soil respiration, and the levels obtained can be considered indicative of the soil health of the production systems.