Fertilidade do solo e estoque de carbono em áreas de produção agroecológica no estado de Sergipe

Abstract

Agroecology is increasingly attracting interest, both in academia and in the field.This science presents the possibility of developing agriculture focused on sustainability with multiple land uses. Soil fertility is the soil's ability to provide nutrients to plants, considering the species to be cultivated.Carbon stock takes into account the accumulation and reservation of a certain amount of carbon in a given compartment. Soil stores carbon two to three times more than the atmosphere.The objective of this study was to analyze soil fertility and soil carbon stock in agroecological production areas of producers in the state of Sergipe.Forty-eight composite soil samples were collected for the study of carbon stock and 16 composite samples for the study of soil fertility. The data obtained were subjected to descriptive statistics.The soils on the properties have medium to high fertility, indicating good soil fertility management by farmers.The organic carbon stock showed an increasing trend, considering that the median is higher than the average of the data evaluated.The results allow us to conclude that adjustments are necessary on all properties, aiming to further improve soil fertility and organic carbon stock, and correct minor soil fertility problems observed, such as medium phosphorus, medium potassium, low calcium and calcium plus magnesium, low effective and potential CEC levels.