Atributos químicos do solo, reservas orgânicas e sistema radicular de pastos degradados associada à introdução de leguminosa
Carregando...
Data
2014-01-01
Autores
Santos Fabrice, Carlos Eduardo [UNESP]
Soares Filho, Ceclio Viega [UNESP]
Pinto, Marcos Franke [UNESP]
Venturoli Perri, Silvia Helena [UNESP]
Cecato, Ulysses
Mateus, Gustavo Pavan
Título da Revista
ISSN da Revista
Título de Volume
Editor
Univ Estadual Londrina
Resumo
The aim was to study the recovery of degraded pasture with the introduction of Stylosanthes macrocephala e capitata cv. Campo Grande on Brachiaria decumbens cv. Basilisk evaluating the levels N-total in roots, biomass, area, and length, diameter and root levels of macro and micronutrients in the soil. The experiment was conducted in the municipality of Andradina, Sao Paulo State, Brazil. The experimental design was a randomized block design in a split-plot (with and without phosphorus), with four replicates, forming the following treatments: control Brachiaria decumbens (CB), partial desiccation with 1.5 L ha(-1) of glyphosate (DP), total desiccation with 3.0 L ha(-1) of glyphosate (TD); tillage (T), soil scarification (S); harrowing rome (H) and plowing + disking (PD). Treatments H and PD were sown by broadcasting and the other in the form of direct seeding. Recovery strategies of grazing signal grass showed significant differences between treatments only for the content of N-total, there were no differences in geometric characteristics of roots and root biomass. The contents of macro and micronutrients in the soil showed no significant differences between the strategies of recovery. Fertilization had a significant effect for P. The introduction of estilosantes Campo Grande accompanied by techniques such as drying and plowing + disking contributed to increases in the N-total levels in the root system. Forms of introduction of legumes did not change the soil chemical properties.
Descrição
Palavras-chave
Biomass, forage, nitrogen, root, recovery, soil
Como citar
Semina-ciencias Agrarias. Londrina: Univ Estadual Londrina, v. 35, n. 4, p. 1721-1730, 2014.