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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados; Embrapa Florestas. |
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Data corrente: |
22/12/2017 |
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Data da última atualização: |
19/04/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ZAGATTO, M. R. G.; NIVA, C. C.; THOMAZINI, M. J.; BARETTA, D.; SANTOS, A.; NADOLNY, H.; CARDOSO, G. B. X.; BROWN, G. G. |
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Afiliação: |
MAURÍCIO RUMENOS GUIDETTI ZAGATTO, USP; CINTIA CARLA NIVA, CPAC; MARCILIO JOSE THOMAZINI, CNPF; DILMAR BARETTA, UESC; ALESSANDRA SANTOS, UFPR; HERLON NADOLNY, UFPR; GUILHERME BORGES XARÃO CARDOSO, UFPR; GEORGE GARDNER BROWN, CNPF. |
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Título: |
Soil invertebrates in different land use systems: how integrated production systems and seasonality affect soil mesofauna communities. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Journal of Agricultural Science and Technology B, v. 7, p. 158-169, 2017. |
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DOI: |
10.17265/2161-6264/2017.03.003 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The soil mesofauna plays a role in organic matter comminution and decomposition, and can be used as bioindicators, since they are sensitive to soil management, vegetation and climate changes. Hence, this study aimed to evaluate mesofauna density and diversity in different land use systems to identify faunal relationships with soil properties, management and seasonality. The study area included five land use systems in Ponta Grossa municipality, Paraná State: integrated crop-livestock (ICL), integrated crop-livestock-forestry (ICLF), grazed native pasture (NP), Eucalyptus dunnii plantation (EU) and no-tillage (NT) cropping systems. In each system, eight soil samples for mesofauna were collected with Berlese funnels of 8 cm diameter along a transect in three replicate plots of 50 m × 100 m. For physical and chemical analysis, soil was sampled at five points per plot in two seasons: winter 2012 and autumn 2013. Data were statistically analyzed using ANOVA and Duncan?s test (P < 0.05), nonparametric statistics (when necessary) and redundancy analysis (RDA). Diversity was calculated based on the group richness and Simpson index. The main mesofauna groups found were: Acarina, Collembola and Hymenoptera. Diplopoda, Enchytraeidae, Isopoda, Collembola, Hemiptera, Hymenoptera and Coleoptera larvae were more abundant in autumn than winter. Soil moisture was the main factor responsible for higher mesofauna abundance in autumn. Integrated production systems, especially ICLF had similar invertebrate community abundance and composition with EU, while NT favored Oribatid mites, although the use of insecticides, herbicides and fungicides reduced total mesofauna density. Most correlations between mesofauna and physical-chemical attributes in the winter were not observed in the autumn and vice versa, revealing that there are more factors involved in regulating soil mesofauna distribution. MenosAbstract: The soil mesofauna plays a role in organic matter comminution and decomposition, and can be used as bioindicators, since they are sensitive to soil management, vegetation and climate changes. Hence, this study aimed to evaluate mesofauna density and diversity in different land use systems to identify faunal relationships with soil properties, management and seasonality. The study area included five land use systems in Ponta Grossa municipality, Paraná State: integrated crop-livestock (ICL), integrated crop-livestock-forestry (ICLF), grazed native pasture (NP), Eucalyptus dunnii plantation (EU) and no-tillage (NT) cropping systems. In each system, eight soil samples for mesofauna were collected with Berlese funnels of 8 cm diameter along a transect in three replicate plots of 50 m × 100 m. For physical and chemical analysis, soil was sampled at five points per plot in two seasons: winter 2012 and autumn 2013. Data were statistically analyzed using ANOVA and Duncan?s test (P < 0.05), nonparametric statistics (when necessary) and redundancy analysis (RDA). Diversity was calculated based on the group richness and Simpson index. The main mesofauna groups found were: Acarina, Collembola and Hymenoptera. Diplopoda, Enchytraeidae, Isopoda, Collembola, Hemiptera, Hymenoptera and Coleoptera larvae were more abundant in autumn than winter. Soil moisture was the main factor responsible for higher mesofauna abundance in autumn. Integrated production systems, especially ICLF had... Mostrar Tudo |
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Palavras-Chave: |
Bioindicador. |
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Thesagro: |
Animal Invertebrado; Biodiversidade; Manejo do Solo; Umidade do Solo; Variação Sazonal. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/175721/1/2017-G.Brown-JAST-Soil-invertebrates.pdf
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Marc: |
LEADER 02827naa a2200289 a 4500
001 2083495
005 2018-04-19
008 2017 bl uuuu u00u1 u #d
024 7 $a10.17265/2161-6264/2017.03.003$2DOI
100 1 $aZAGATTO, M. R. G.
245 $aSoil invertebrates in different land use systems$bhow integrated production systems and seasonality affect soil mesofauna communities.$h[electronic resource]
260 $c2017
520 $aAbstract: The soil mesofauna plays a role in organic matter comminution and decomposition, and can be used as bioindicators, since they are sensitive to soil management, vegetation and climate changes. Hence, this study aimed to evaluate mesofauna density and diversity in different land use systems to identify faunal relationships with soil properties, management and seasonality. The study area included five land use systems in Ponta Grossa municipality, Paraná State: integrated crop-livestock (ICL), integrated crop-livestock-forestry (ICLF), grazed native pasture (NP), Eucalyptus dunnii plantation (EU) and no-tillage (NT) cropping systems. In each system, eight soil samples for mesofauna were collected with Berlese funnels of 8 cm diameter along a transect in three replicate plots of 50 m × 100 m. For physical and chemical analysis, soil was sampled at five points per plot in two seasons: winter 2012 and autumn 2013. Data were statistically analyzed using ANOVA and Duncan?s test (P < 0.05), nonparametric statistics (when necessary) and redundancy analysis (RDA). Diversity was calculated based on the group richness and Simpson index. The main mesofauna groups found were: Acarina, Collembola and Hymenoptera. Diplopoda, Enchytraeidae, Isopoda, Collembola, Hemiptera, Hymenoptera and Coleoptera larvae were more abundant in autumn than winter. Soil moisture was the main factor responsible for higher mesofauna abundance in autumn. Integrated production systems, especially ICLF had similar invertebrate community abundance and composition with EU, while NT favored Oribatid mites, although the use of insecticides, herbicides and fungicides reduced total mesofauna density. Most correlations between mesofauna and physical-chemical attributes in the winter were not observed in the autumn and vice versa, revealing that there are more factors involved in regulating soil mesofauna distribution.
650 $aAnimal Invertebrado
650 $aBiodiversidade
650 $aManejo do Solo
650 $aUmidade do Solo
650 $aVariação Sazonal
653 $aBioindicador
700 1 $aNIVA, C. C.
700 1 $aTHOMAZINI, M. J.
700 1 $aBARETTA, D.
700 1 $aSANTOS, A.
700 1 $aNADOLNY, H.
700 1 $aCARDOSO, G. B. X.
700 1 $aBROWN, G. G.
773 $tJournal of Agricultural Science and Technology B$gv. 7, p. 158-169, 2017.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Biblioteca |
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Origem |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
18/08/2021 |
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Data da última atualização: |
18/08/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
TEIXEIRA, D. H. L.; GONÇALVES, F. M. A.; NUNES, J. A. R.; SOUZA SOBRINHO, F. de; BENITES, F. R. G.; DIAS, K. O. das G. |
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Afiliação: |
DAVI HENRIQUE LIMA TEIXEIRA, Universidade Federal Rural da Amazônia; FLÁVIA MARIA AVELAR GONÇALVE, Universidade Federal de Lavras; JOSÉ AIRTON RODRIGUES NUNES, Universidade Federal de Lavras; FAUSTO DE SOUZA SOBRINHO, CNPGL; FLAVIO RODRIGO GANDOLFI BENITES, CNPGL; KAIO OLÍMPIO DAS GRAÇAS DIAS, Escola Superior de Agricultura Luiz de Queiroz. |
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Título: |
Visual selection of Urochloa ruziziensis genotypes for green biomass yield. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Acta Scientiarum. Agronomy, v. 42, e42444, 2020. |
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DOI: |
https://doi.org/10.4025/actasciagron.v42i1.42444 |
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Idioma: |
Inglês |
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Conteúdo: |
The breeding program of Urochloa ruziziensis evaluates many genotypes in initial phases. Evaluations through grades might make the selection less costly. The aim of this study was to verify the efficiency of visual selection for green biomass yield in relation to different selection strategies, such as mass selection by phenotypic mean, BLUP (Best Linear Unbiased Prediction) and at random. For this purpose, 2,309 regular genotypes were evaluated in an augmented block design in two cuts. The evaluators gave grades for plant vigor, and later, the plots were measured for green biomass yield. The coincidences of the selected genotypes were estimated by different selection strategies. Then, 254 clones of the genotypes selected in different strategies were evaluated in a clonal test in a triple lattice design in four cuts. The statistical analyses were performed in SAS using the Mixed procedure. The regular genotype level and clone-mean basis heritabilities were 31.16 and 62.91%, respectively, for green mass yield. The expected selection gains were 21.09% (visual), 25.43% (phenotypic mean), and 27.5% (BLUP). Moreover, the realized heritabilities for these strategies were 15.58, 11.87, and 15.86%, respectively, which might be associated with genotype by environment interaction. Therefore, the visual selection could be a useful strategy in initial phases of a U. ruziziensis breeding program because the efficiency was moderate to high in relation to phenotypic mean and BLUP. |
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Palavras-Chave: |
Herdabilidade; Mass selection. |
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Thesagro: |
Brachiaria; Capim Urochloa; Gramínea Forrageira; Seleção Massal. |
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Thesaurus NAL: |
Heritability. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/225333/1/Visual-selection.pdf
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Marc: |
LEADER 02329naa a2200277 a 4500
001 2133712
005 2021-08-18
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.4025/actasciagron.v42i1.42444$2DOI
100 1 $aTEIXEIRA, D. H. L.
245 $aVisual selection of Urochloa ruziziensis genotypes for green biomass yield.$h[electronic resource]
260 $c2020
520 $aThe breeding program of Urochloa ruziziensis evaluates many genotypes in initial phases. Evaluations through grades might make the selection less costly. The aim of this study was to verify the efficiency of visual selection for green biomass yield in relation to different selection strategies, such as mass selection by phenotypic mean, BLUP (Best Linear Unbiased Prediction) and at random. For this purpose, 2,309 regular genotypes were evaluated in an augmented block design in two cuts. The evaluators gave grades for plant vigor, and later, the plots were measured for green biomass yield. The coincidences of the selected genotypes were estimated by different selection strategies. Then, 254 clones of the genotypes selected in different strategies were evaluated in a clonal test in a triple lattice design in four cuts. The statistical analyses were performed in SAS using the Mixed procedure. The regular genotype level and clone-mean basis heritabilities were 31.16 and 62.91%, respectively, for green mass yield. The expected selection gains were 21.09% (visual), 25.43% (phenotypic mean), and 27.5% (BLUP). Moreover, the realized heritabilities for these strategies were 15.58, 11.87, and 15.86%, respectively, which might be associated with genotype by environment interaction. Therefore, the visual selection could be a useful strategy in initial phases of a U. ruziziensis breeding program because the efficiency was moderate to high in relation to phenotypic mean and BLUP.
650 $aHeritability
650 $aBrachiaria
650 $aCapim Urochloa
650 $aGramínea Forrageira
650 $aSeleção Massal
653 $aHerdabilidade
653 $aMass selection
700 1 $aGONÇALVES, F. M. A.
700 1 $aNUNES, J. A. R.
700 1 $aSOUZA SOBRINHO, F. de
700 1 $aBENITES, F. R. G.
700 1 $aDIAS, K. O. das G.
773 $tActa Scientiarum. Agronomy$gv. 42, e42444, 2020.
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Embrapa Gado de Leite (CNPGL) |
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