Inga edulis Mart. intercropped with pasture improves soil quality without compromising forage yields
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Inga edulis Mart. intercropped with pasture improves soil quality without compromising forage yields Aroldo Felipe de Freitas . Joana Junqueira Carneiro . Nelson Venturin . Fatima Maria de Souza Moreira . Ana Isabella Guimara˜es Ferreira . Gil Pedro de Oliveira Lara . Rafael de Moura Miranda . Luiza Figueira de Siqueira Irene Maria Cardoso
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Received: 8 May 2019 / Accepted: 9 October 2020 Ó Springer Nature B.V. 2020
Abstract This study evaluated the effect of Inga edulis trees on soil quality attributes and forage yield and moisture in a pasture field in the county of Carrancas, Minas Gerais, Brazil. Soil samples were collected under the canopy and beyond the canopy projection of five I. edulis trees, at four distances from the tree trunks to beyond the canopy projection, along the radius line. A randomized block design was used, in which five trees represented five blocks and the four distances from the trees corresponded to the
treatments. The forage yield and moisture, soil moisture and chemical attributes, density and diversity of arbuscular mycorrhizal fungi (AMF) spores and the presence of nodule-forming nitrogen-fixing bacteria in legumes were evaluated. The statistical analysis was performed using ANOVA and the Scott-Knott test (p = 0.05). No statistical differences between forage yield and moisture were found in the soil under or beyond the canopy projection. The soil quality was elevated, indicated by the improved soil pH, base
A. F. de Freitas N. Venturin Postgraduate Program in Forestry Engineering, Federal University of Lavras (UFLA), Mailbox 37, Lavras, MG 37200-900, Brazil e-mail: [email protected]
R. de Moura Miranda e-mail: [email protected]
N. Venturin e-mail: [email protected]
I. M. Cardoso Postgraduate Program in Soil and Plant Nutrition, Federal University of Vic¸osa, Vic¸osa, MG 36570-900, Brazil e-mail: [email protected]
J. Junqueira Carneiro (&) F. M. de Souza Moreira Postgraduate Program in Soil Science, Federal University of Lavras (UFLA), Mailbox 3037, Lavras, MG 37200-900, Brazil e-mail: [email protected]
L. Figueira de Siqueira e-mail: [email protected]
F. M. de Souza Moreira e-mail: [email protected] A. I. Guimara˜es Ferreira G. P. de Oliveira Lara R. de Moura Miranda L. Figueira de Siqueira Federal University of Lavras (UFLA), Lavras, MG, Brazil e-mail: [email protected] G. P. de Oliveira Lara e-mail: [email protected]
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saturation, sum of bases and effective cation exchange capacity in the samples collected closer to I. edulis. No changes in the density and diversity of AMF spores or in the nodulation and development of inoculated seedlings were observed in soil collected at different distances from the trees. Consequently, I. edulis trees can be intercropped with pasture to increase the soil quality without affecting forage yields. Keywords Silvopastoral system Agroforestry Nodulating leguminosae Green manure
Introduction Pastures are economically extremely
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