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Influence of summer crop residues on 15N present in organic matter fractions under two lowland soils Ciência Rural
Pollet,Carolina Schultz; Silva,Leandro Souza da; Chaves,Bruno; Rosa Neto,Lethícia; Dossin,Mariana Ferneda; Giacomini,Sandro José; Cargnelutti Filho,Alberto.
ABSTRACT: The state of Rio Grande do Sul has about 20% of the total area as lowland soils, suitable for flooded rice (Oryza sativa). In order to mitigate damage caused by rice monoculture, new crops such as sorghum (Sorghum bicolor) and soybean (Glycine max) have been cultivated in these areas. With different qualities of crop residues, it is expected a change in soil organic matter (SOM) dynamics and consequently, nitrogen (N) availability. The objective of this study was to evaluate the influence of rice, soybean and sorghum crop residues on the N present in physical fractions of SOM of two lowland soils, using labeled 15N technique, under incubation for 180 days in aerobic condition and more 180 days in anaerobic condition. At 30, 180 and 360 days of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Physical fractionation; Paddy soils; 15N isotope.
Ano: 2019 URL:
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