Affiliation:
1. Universidade Federal do Vale do São Francisco, Brazil
2. Empresa Brasileira de Pesquisa Agropecuária, Brazil
Abstract
Improper land use has lead to deterioration and depletion of natural resources, as well as a significant decline in agricultural production, due to decreased soil quality. Removal of native vegetation to make way for agricultural crops, often managed inadequately, results in soil disruption, decreased nutrient availability, and decomposition of soil organic matter, making sustainable agricultural production unviable. Thus, the aim of the present study was to evaluate the impact of growing irrigated mango (over a 20 year period) on the organic carbon (OC) stocks and on the fractions of soil organic matter (SOM) in relation to the native caatinga (xeric shrubland) vegetation in the Lower São Francisco Valley region, Brazil. The study was carried out on the Boa Esperança Farm located in Petrolina, Pernambuco, Brazil. In areas under irrigated mango and native caatinga, soil samples were collected at the 0-10 and 10-20 cm depths. After preparing the soil samples, we determined the OC stocks, carbon of humic substances (fulvic acid fractions, humic acid fractions, and humin fractions), and the light and heavy SOM fractions. Growing irrigated mango resulted in higher OC stocks; higher C stocks in the fulvic acid, humic acid, and humin fractions; and higher C stocks in the heavy and light SOM fraction in comparison to nativecaatinga, especially in the uppermost soil layer.
Subject
Soil Science,Agronomy and Crop Science
Reference61 articles.
1. A cultura da mangueira;Albuquerque JAS,2002
2. Recomendações para o uso de corretivos e fertilizantes em Minas Gerais: 5a. Aproximação;Alvarez V VH,1999
3. Anuário Brasileiro da Fruticultura - Agrianual,2010
4. Caatinga: Agroecologia versus desertificação;Araújo Filho JA;Ci Hoje,2002
5. Fundamentos da matéria orgânica do solo em ecossistemas tropicais e subtropicais;Bayer C,2008
Cited by
8 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献