Relações Entre Produtividade De Sorgo Forrageiro E Atributos Físicos E Teor De Matéria Orgânica De Um Latossolo Do Cerrado

Basso, Fernanda Gonçalves; Andreotti, Marcelo; Carvalho, Morel de Passos e; Lodo, Bruno Nascimento

doi:10.5216/pat.v41i1.7099

Cited by 11 publications

(8 citation statements)

References 19 publications

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“…Sua baixa magnitude (r = -0,19*), obtida segundo preceitos da análise geoestatística e que havia sido previamente comentada por MONTANARI et al (2010), foi devido basicamente a dois fatos: a) exemplo clássico de variável dependente (VOL) contra independente (DS2) e b) elevado número de observações (n=120). Tal fato é uma realidade em relação a tais estudos que normalmente trabalham com muitos dados para se compor as regressões, assim como para a modelagem da dependência espacial (LIMA et al, 2007;MOLIN et al, 2007;ANDREOTTI et al, 2010;MONTANARI et al, 2010;BASSO et al, 2011) A análise geoestatística (Tabela 2, Figura 1) mostrou, para os atributos que não resultaram efeito pepita puro, que os atributos da planta apresentaram coeficientes de correlação espacial (r 2 ) muito altos (0,965-0,974), dependências espaciais (ADE) entre média a muito alta (59,5-91,0 %) e coeficientes angulares (b) da validação cruzada (Tabela 3) próximos da unidade (0,883-0,986). Esses dados foram muito semelhante àqueles obtidos por LIMA et al (2010), quando foi pesquisada a mesma espécie de eucalipto.…”

Section: Resultsunclassified

Produtividade de madeira do eucalipto correlacionada com atributos do solo visando ao mapeamento de zonas específicas de manejo

et al. 2012

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A correta intervenção espacial na administração da lavoura, decorrente das zonas específicas de manejo do solo, aumenta a produtividade e a lucratividade agrícola. No ano de 2010, em Selvíria, Mato Grosso do Sul, Brasil (20° 20' S lat.; 51° 24' W long.) foram empregadas correlações, espaciais e de Pearson, entre dados da planta de eucalipto e alguns atributos físico-químicos do solo, visando encontrar aquele que se correlacionasse bem com a produtividade de madeira. Para tanto, instalou-se uma rede geoestatística para a coleta de dados de solo e planta, com 120 pontos amostrais, num talhão de Eucalyptus camaldulensis de 2 anos. O solo foi um Latossolo Vermelho distrófico (Haplic Acrustox) com declive de 0,025m m-1. O diâmetro basal da copa e a densidade do solo, por resultarem estreitas correlações com o volume de madeira, evidenciaram zonas específicas de manejo do solo intimamente associadas à produção de madeira do eucalipto.

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Section: Resultsunclassified

Produtividade de madeira do eucalipto correlacionada com atributos do solo visando ao mapeamento de zonas específicas de manejo

et al. 2012

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“…According to [19] the abundance of functional individuals of soil fauna occurs due to the availability and variety of sources of nutrition, the interaction of biotic factors with biotic and abiotic such as climate, temperature and light intensity and land management, which directly affect agricultural productivity [20]. Species losses in ecosystems tend to be biased towards predators.…”

Section: Functional Soil Fauna In Several Types Of Land Super Wet Tropical Rainforest Areasmentioning

confidence: 99%

Soil Fauna Food Web in Several Land Use Types of Super Wet Tropical Rain Forest Area

Marsandi

Hermansah

Agustian

et al. 2019

Int. J. Res. Granthaalayah

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Changes land use in the super-wet tropical rainforest area has resulted in changes pattern of soil fauna food webs that show the diversity of ecosystems. Various soil biodiversity studies tend to prioritize the diversity of soil fauna, without examining how changes in the pattern of food flow are running. The results showed that the abundance of the highest number of functional individuals of soil fauna in each type of land was predator. The diversity of functional types of soil fauna in forest and mixed gardens is also dominated by predators and on open area types and monoculture gardens dominated by herbivorees. While the parasitoid and detritivore groups were spread evenly on each type of land. This shows that the pattern of food webs in each land type of super wet tropical rainforest area reaches a balance in the type of forest and mixed gardens and begins to be disrupted in open area and monoculture gardens. The highest trophic level of food webs is the main controller of ecosystem balance. Changes in vegetation type of land in super wet tropical rain forest area will cause fragmentation of functional habitat of soil fauna which causes imbalance of energy flow in food webs.

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“…Soil variability occurs due to the interaction of formation factors, climate, temperature, and management (Bonnin et al, 2010;Siqueira et al, 2017), which directly affects agricultural productivity (Basso et al, 2011). The different planting systems can alter the soil quality, due to constant fertilization and liming, resulting in changes in the physical, chemical, and biological soil properties (Baretta et al, 2003;Carvalho et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Spatial Variability of Soil Fauna Under Different Land Use and Managements

Silva

Siqueira

Costa

et al. 2018

Rev. Bras. Ciênc. Solo

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Geostatistics allows the evaluation of the distribution pattern of data with high spatial variability in agricultural systems. This study aimed to evaluate the spatial variability of biological diversity indices of soil fauna under different land (agriculture and forest). Samples were collected in seven areas (millet, soybean, corn, eucalyptus, pasture crops, and preserved and disturbed Cerrado), in Maranhão state, Brazil. The soil fauna was caught trapped in pitfall traps, installed 3 m away from each other. In each area, 130 traps were maintained for seven days. After this period, they were removed and their content transferred to bottles and taken to the laboratory, where the insects were screened and identified at the level of orders and families. Eight indices were calculated, namely: individuals trap-1 day-1 , Jackknife richness estimator, the Simpson, McIntosh, Shannon, and total diversity, and Simpson dominance, and Pielou equitability indices. The spatial variability was derived from the semivariograms fitted to Gaussian, spherical, and exponential geostatistical models. Statistical analysis showed medium values of the coefficient of variation for millet, except for the indices individuals trap-1 day-1 and McIntosh diversity, which were considered high. The values of the correlation matrix were negative for some indices, suggesting an inverse relationship. For millet, corn, eucalyptus, disturbed Cerrado, and pasture areas, the Shannon diversity index exhibited a pure nugget effect. For the areas of millet, corn, disturbed Cerrado and pasture, the total diversity index was adjusted to the Gaussian model. The degree of spatial dependence was considered high for the individuals trap-1 day-1 and Pielou equitability indices for millet. Only for soybean and pasture similarity in the scaled semivariograms was observed for the spatial variability of the indices, indicating similarity of performance. Soil management and land use affect the patterns of soil fauna abundance, richness, and diversity. The presence of groups such as Araneae, Diplura, and Poduromorpha are related to ecological equilibrium, quality, and sustainability of the agricultural systems studied.

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Relações Entre Produtividade De Sorgo Forrageiro E Atributos Físicos E Teor De Matéria Orgânica De Um Latossolo Do Cerrado

Cited by 11 publications

References 19 publications

Produtividade de madeira do eucalipto correlacionada com atributos do solo visando ao mapeamento de zonas específicas de manejo

Produtividade de madeira do eucalipto correlacionada com atributos do solo visando ao mapeamento de zonas específicas de manejo

Soil Fauna Food Web in Several Land Use Types of Super Wet Tropical Rain Forest Area

Spatial Variability of Soil Fauna Under Different Land Use and Managements

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