Does grass-legume intercropping change soil quality and grain yield in integrated crop-livestock systems?

Silva, Laércio Santos; Laroca, Jackeline Vieira dos Santos; Coelho, Anderson Prates; Gonçalves, Evelyn Custódio; Gomes, Romário Pimenta; Pacheco, Leandro Pereira; Carvalho, Paulo César de Faccio; Pires, Gabriela Castro; Oliveira, Rafael Loverde; Souza, Juliana Mendes Andrade de; Freitas, Caio Moretti de; Cabral, Carlos Eduardo Avelino; Wruck, F. J.; Souza, Edicarlos Damacena de

doi:10.1016/j.apsoil.2021.104257

Cited by 22 publications

(7 citation statements)

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“…Sunflower and jack bean residues showed close contents of ASE, HC, C, N, and higher content of SL. The relationships between these variables were essential for the decomposition of these residues and the significant increases in the C-MAOM fraction from both mixes (Maluf et al, 2015b;Silva et al, 2022a).…”

Section: Discussionmentioning

confidence: 99%

“…For the treatments composed of single plant residues, a 10 g residue sample was used; for the treatments combined with the millet, 5 g of millet + 5 g of the other residue were used, with the only exception of the treatment with the mix, in which the proportion of residues of eucalyptus and brown hemp was 1:1. Detailed information about the proportions of the residues used in this study can be found in Silva et al (2022a). Soil/residue mixture ratios were selected based on preliminary experiments and previous studies (Maluf et al, 2015a,b;Silva et al, 2022b).…”

Section: Incubation Experimentsmentioning

confidence: 99%

“…Decomposition and consequent transfer of carbon from plant residues (left on the surface or incorporated into the soil) to soil organic matter (SOM) is strongly influenced by N and organic compounds (mainly lignin, hemicellulose and cellulose) contents (Berg, 2014;Santos et al, 2014;Chaves et al, 2021). Consequently, the use of legume and non-legume plants as cover crops in succession or associated with other crops (Cocktails or Mix) may contribute differently to the formation and stabilization of SOM (Ghimire et al, 2019;Davi et al, 2022;Silva et al, 2022a) and should be considered in the definition of managements that aim to increase C stocks in soil (Bayer and Mielniczuk, 1997;Silva et al, 2022b). Additionally, climatic conditions in tropical regions strongly affect residue decomposition rate (Ventrella et al, 2016;Ni et al, 2021), which reinforces the importance of a management strategy that adds residues with distinct qualities to the soil to increase SOM stocks.…”

Section: Introductionmentioning

confidence: 99%

“…Although there are studies indicating significant changes in SOM in production systems with cover crops (Laroca et al, 2018;Davi et al, 2022;Silva et al, 2022a), information on the effect of combining plant-derived residues (legumes and/or non-legumes) on the conversion efficiency of residue into more stable SOM fractions is still incipient for tropical soils. Understanding the dynamics of the decomposition rates and C transfer from different plant residues to SOM can aid in elaborating management plans aimed at more sustainable production systems, especially in tropical soils.…”

Section: Introductionmentioning

confidence: 99%

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Combined legume and non-legume residues management improve soil organic matter on an Oxisol in Brazil

Silva¹,

Filho²,

Teixeira³

et al. 2022

Revista Brasileira De Ciência Do Solo

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Understanding soil organic matter (SOM) dynamics in production systems on tropical soils is necessary to guide strategies to increase SOM formation. This study aimed to evaluate soil carbon (C) dynamics by combining applications of different plant residues used on tropical soils. An incubation study was carried out with and without adding millet (Pennisetum americanum) residues combined with six crop residues (legumes and non-legumes); and one additional treatment with only millet residue. Higher C-CO 2 fluxes recorded in jack bean, sunflower and velvet bean residues were correlated with high soluble compound contents (49.5, 49.6 and 32.1 %, respectively). Adding millet residues resulted in positive PE for all residue combinations. Soils without millet, except jack bean, had a negative PE. Residues application promoted four times increase in C-POM content (from 1.04 to 4.2 g kg -1 soil). The C-MAOM content had 2.4 times increase, being more expressive due to its high initial content (from 15.3 to 37.3 g kg -1 soil). The comparison between the final C contents in the SOM fractions showed a significant increase of 8.8 times for MAOM in relation to POM, demonstrating the larger dimension of this C reservoir in the soil. Both combinations of legumes + non-legumes and non-legume + non-legume contributed significantly to the conversion of C to MAOM. The results give insight into possible management strategies for significant C increments in the more stable SOM fractions, depending on the residue type (quality) and residue combination.

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Section: Discussionmentioning

confidence: 99%

Section: Incubation Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Combined legume and non-legume residues management improve soil organic matter on an Oxisol in Brazil

Silva¹,

Filho²,

Teixeira³

et al. 2022

Revista Brasileira De Ciência Do Solo

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“…The effects of intercropping on soil microbial activity were evaluated by total organic carbon, carbon management index, microbial biomass carbon, soil basal respiration and metabolic quotient. The results showed that cowpea-forage intercropping significantly increased microbial activity compared with monoculture forage [68]. Amit Kumar et al [69] conducted monoculture and mixed cultivation experiments of broad bean, lupine and corn on medium fertility soil.…”

Section: Soil Microbial Activity In the Legume-cereal Intercropping S...mentioning

confidence: 99%

Nitrogen Distribution and Soil Microbial Community Characteristics in A Legume–cereal Intercropping System: A Review

Lai¹,

Gao²,

Sheng³

et al. 2022

Preprint

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Intercropping systems can flexibly use resources such as sunlight, heat, water, and nutrients in time and space, improve crop yield and land utilization rates, effectively reduce continuous cropping obstacles and the occurrence of diseases and insect pests, and control the growth of weeds. Thus, intercropping is a safe and efficient ecological planting mode. The legume–cereal intercropping system is the most common planting combination. Legume crops fix nitrogen from the atmosphere through their symbiotic nitrogen fixation abilities, and the fixed nitrogen can be transferred to and utilized by cereal crops in various ways. The symbiotic nitrogen fixation efficiency of legume crops was improved by reducing the inhibition of soil nitrogen on nitrogenase activity through competitive absorption of soil nitrogen. However, the effects of nitrogen transformation and distribution in intercropping systems, and microbial community structure characteristics on nitrogen transfer need to be further explored. In this review, ⅰ) we present the transformation and distribution of nitrogen in the legume–cereal intercropping system; ⅱ) we describe the soil microbial community characteristics in intercropping systems; and ⅲ) we discuss the advantages of using modern biological molecular techniques to study soil microorganisms. We conclude that intercropping can increase the diversity of soil microorganisms, and the interaction between different plants has an important impact on the diversity and composition of the bacterial and fungal communities. The extensive application of modern biological molecular techniques in soil microbial research and the great contribution of intercropping systems to sustainable agriculture are particularly emphasized in this review.

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Cover Crops and Soil Health in Brazilian Agricultural Systems

Souza,

da Silva Vanolli,

Schiebelbein

et al. 2024

Soil Health Series: Volume 3 Soil Health and Sustainable Agriculture in Brazil

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Does grass-legume intercropping change soil quality and grain yield in integrated crop-livestock systems?

Cited by 22 publications

References 50 publications

Combined legume and non-legume residues management improve soil organic matter on an Oxisol in Brazil

Combined legume and non-legume residues management improve soil organic matter on an Oxisol in Brazil

Nitrogen Distribution and Soil Microbial Community Characteristics in A Legume–cereal Intercropping System: A Review

Cover Crops and Soil Health in Brazilian Agricultural Systems

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