Comunidade microbiana e mesofauna edáficas em solo sob caatinga no semi-árido da Paraíba

Souto, Patrícia Carneiro; Souto, Jacob Silva; Miranda, José Romilson Paes de; Santos, Rivaldo Vital dos; Alves, Arnaud Azevêdo

doi:10.1590/s0100-06832008000100015

Cited by 43 publications

(47 citation statements)

References 6 publications

(6 reference statements)

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“…Nos períodos avaliados, os valores obtidos para o índice de Shannon mostram que a diversidade da população de organismos invertebrados esteve associada aos tratamentos em que foi adicionada palhada, embora a variação dos valores, em cada período, tenha sido baixa, uma vez que os valores para o índice de Shannon podem variar de 0 a 5 e a sua redução pode resultar da maior dominância de alguns grupos, em detrimento a outros (Begon et al 1996, Souto et al 2008. Os valores observados no presente trabalho foram baixos, especialmente no período seco, possivelmente devido à simplificação do sistema, que condiciona a presença de alguns grupos mais adaptados.…”

Section: Methodsunclassified

“…De acordo com Souto et al (2008), a diversidade de espécies está interligada a uma relação entre o número de espécies e a distribuição do número de indivíduos entre as espécies, ou seja, quanto maior o índice de Shannon, menor a variação da riqueza de espécie. Benazzi et al (2013) observaram reflexo do índice de Shannon sobre a riqueza de grupos, onde os tratamentos condicionaram um ambiente ideal para a atividade da fauna epígea, sendo que a deposição e manutenção da palhada sobre o solo favoreceu a ocorrência de diferentes grupos de organismos invertebrados da fauna do solo.…”

Section: Methodsunclassified

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Fauna edáfica sob diferentes níveis de palhada em cultivo de cana-de-açúcar

Abreu

Lima

Oliveira

et al. 2014

Pesqui. Agropecu. Trop.

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Section: Methodsunclassified

Fauna edáfica sob diferentes níveis de palhada em cultivo de cana-de-açúcar

Abreu

Lima

Oliveira

et al. 2014

Pesqui. Agropecu. Trop.

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“…Variations in the vegetation composition and in soil management, litter quality, food availability, and degree of degradation or recovery of the ecosystem have a great influence on the soil invertebrate community (Moço et al, 2005;Baretta et al, 2006;Silva et al, 2006;Dias et al, 2007;Azevedo et al, 2008;Ribas et al, 2011). In general, the removal of the vegetation results in a simpler habitat, which immediately reduces food supply and diversity, and shelter and reproduction sites (Guerra et al, 1982;Souto et al, 2008;Silva et al, 2009). Additionally, the protection of the vegetation against microclimate variations is reduced, which results in high insolation, extreme soil temperatures and low moisture, making the environment less favorable for survival and reproduction (Guerra et al, 1982).…”

Section: Introductionmentioning

confidence: 99%

Soil fauna as an indicator of soil quality in forest stands, pasture and secondary forest

Neto¹,

Correia²,

Pereira³

et al. 2012

Rev. Bras. Ciênc. Solo

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SUMMARYThe interactions between soil invertebrates and environmental variations are relatively unknown in the assessment of soil quality. The objective of this study was to evaluate soil quality in areas with different soil management systems, based on soil fauna as indicator, in Além Paraíba, Minas Gerais, Brazil. The soil invertebrate community was sampled using pitfall traps, in the dry and rainy seasons, from areas with five vegetation types (acacia, mimosa, eucalyptus, pasture, and secondary forest). The abundance of organisms and the total and average richness, Shannon's diversity index, the Pielou uniformity index, and change index V were determined. The fauna was most abundant in the areas of secondary forest and mimosa plantations in the dry season (111.3 and 31.7 individuals per trap per day, respectively). In the rainy season, the abundance of organisms in the three vegetation types did not differ. The highest values of average and total richness were recorded in the secondary forest in the dry season and in the mimosa stand in the rainy season. Shannon's index ranged from 1.57 in areas with acacia and eucalyptus in the rainy season to 3.19 in the eucalyptus area in the dry season. The uniformity index was highest in forest stands (eucalyptus, acacia and mimosa) in the dry season, but higher in the rainy season in the pasture and secondary forest than in the forest stands. The change index V indicated that the percentage of extremely inhibited groups was lowest in the area with mimosa, both in the dry and rainy season (36 and 23 %, respectively). Of all forest stands, the mimosa area had the most abundant soil fauna.

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“…has emerged as one of the most promising species in the use as green manure, mainly in the Brazilian semiarid region. The adaptation of this legume to adverse conditions such as drought stress, heat or salt stress, its high production of dry biomass, about 40 t ha -1 , vigorous regrowth after cutting and C/N ratio less than 30:1, have justified the increased interest of agronomic researchers on roostertree use as green manure (SOUTO et al, 2008;ANDRADE FILHO, 2012). Research results have demonstrated the potential use of this specie as green manure in the radish crop , carrot (SILVA et al, 2013), coriander , arugula (SOUZA et al, 2016) and lettuce-arugula intercropping (ALMEIDA et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Agronomic performance of carrot fertilized with roostertree [Calotropis procera (Ait.) R. BR.] in two growing seasons

Souza¹,

Souza²,

Santos³

et al. 2017

Biosci. J.

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ABSTRACT:Because vegetables have a fast production cycle, they require fertilization in quantities and at ideal times to obtain maximum productivity, and green manure is an alternative practice to the use of mineral fertilizers. This study was conducted to evaluate the effects of different amounts of roostertree [Calotropis procera (Ait.) R. Br.] biomass and its incorporation times in two growing seasons, in the agronomic performance of carrots. The experiment was conducted on an experimental farm at the Universidade Federal Rural de Pernambuco (UFRPE) in the autumn-winter period (March-July 2012) and the spring-summer period (September-December 2012). The experimental design was a randomized block design with three replications. The treatments were arranged in a factorial 4 x 4 design; the first factor consists of four amounts of roostertree biomass (5.4, 8.8, 12.2 and 15.6 t ha -1 on a dry basis), and the second factor consists of four times of incorporation of this manure into the soil (0, 10, 20 and 30 days before sowing the carrots). The carrot cultivar used was Brasília. The following traits were evaluated: plant height, number of leaves per plant, root dry mass, total and commercial yield of roots. The best agronomic performance of carrot cultivar Brasília was found with the amount of roostertree biomass of 15.6 t ha -1 , in the time of incorporation into the soil of 10 days before seeding. The cultivation in the autumn-winter showed higher total and commercial productivities of carrot roots fertilized with roostertree.

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Comunidade microbiana e mesofauna edáficas em solo sob caatinga no semi-árido da Paraíba

Cited by 43 publications

References 6 publications

Fauna edáfica sob diferentes níveis de palhada em cultivo de cana-de-açúcar

Fauna edáfica sob diferentes níveis de palhada em cultivo de cana-de-açúcar

Soil fauna as an indicator of soil quality in forest stands, pasture and secondary forest

Agronomic performance of carrot fertilized with roostertree [Calotropis procera (Ait.) R. BR.] in two growing seasons

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