Long-term tillage and crop rotation effects on microbial biomass and C and N mineralization in a Brazilian Oxisol

Balota, Elcio Libório; Filho, Arnaldo Colozzi; Andrade, Diva Souza; Dick, Richard P.

doi:10.1016/j.still.2003.12.003

Cited by 260 publications

(167 citation statements)

References 39 publications

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“…The C MIN obtained in this study was similar to that observed in another region of the state of Paraná under different soil tillage systems in clayey soil with high natural fertility (BALOTA et al, 2004) and it is also around 4.0 times higher than that observed when using different leguminous plants as green manure for a coffee crop in sandy soil with low natural fertility (BALOTA; CHAVES, 2009). This wide variation may be due to various factors including soils, plants, climate, and experimental conditions.…”

Section: Carbon and Nitrogen Mineralizationsupporting

confidence: 87%

“…An initial 5 g sample, before the incubation, and the incubated soil were extracted with 20 mL of K 2 SO 4 solution (0.25 M) by shaking for 50 minutes at 220 rpm, followed by centrifuging and filtering. The concentration of nitrate was determined by the procedure as described in Balota et al (2004). The mineralized N was calculated from the difference between nitrate concentration before and after the incubation.…”

Section: And N Mineralizationmentioning

confidence: 99%

“…The C MIN varied widely from 10 mg C g -1 d -1 (FRANZLUEBBERS et al, 1995) to 222 mg C g -1 d -1 (CARTER; RENNIE, 1982) in temperate climates and from 0.75 to 7.1 mg C g -1 d -1 in subtropical Brazilian conditions (BALOTA et al, 2004;CHAVES, 2009). The C MIN obtained in this study was similar to that observed in another region of the state of Paraná under different soil tillage systems in clayey soil with high natural fertility (BALOTA et al, 2004) and it is also around 4.0 times higher than that observed when using different leguminous plants as green manure for a coffee crop in sandy soil with low natural fertility (BALOTA; CHAVES, 2009).…”

Section: Carbon and Nitrogen Mineralizationmentioning

confidence: 99%

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Soil carbon and nitrogen mineralization under different tillage systems and Permanent Groundcover cultivation between Orange trees

Balota

Auler

2011

Rev. Bras. Frutic.

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-The objective of this work was to evaluate the alterations in carbon and nitrogen mineralization due to different soil tillage systems and groundcover species for intercropped orange trees. The experiment was established in an Ultisol soil (Typic Paleudults) originated from Caiuá sandstone in northwestern of the state of Paraná, Brazil, in an area previously cultivated with pasture (Brachiaria humidicola). Two soil tillage systems were evaluated: conventional tillage (CT) in the entire area and strip tillage (ST) with a 2-m width, each with different groundcover vegetation management systems. The citrus cultivar utilized was the 'Pera' orange (Citrus sinensis) grafted onto a 'Rangpur' lime rootstock. The soil samples were collected at a 0-15-cm depth after five years of experiment development. Samples were collected from under the tree canopy and from the inter-row space after the following treatments: (1) CT and annual cover crop with the leguminous Calopogonium mucunoides; (2) CT and perennial cover crop with the leguminous peanut Arachis pintoi; (3) CT and evergreen cover crop with Bahiagrass Paspalum notatum; (4) CT and cover crop with spontaneous B. humidicola grass vegetation; and (5) ST and maintenance of the remaining grass (pasture) of B. humidicola. The soil tillage systems and different groundcover vegetation influenced the C and N mineralization, both under the tree canopy and in the inter-row space. The cultivation of B. humidicola under strip tillage provided higher potential mineralization than the other treatments in the inter-row space. Strip tillage increased the C and N mineralization compared to conventional tillage. The grass cultivation increased the C and N mineralization when compared to the others treatments cultivated in the inter-row space.

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Section: Carbon and Nitrogen Mineralizationsupporting

confidence: 87%

Section: And N Mineralizationmentioning

confidence: 99%

Section: Carbon and Nitrogen Mineralizationmentioning

confidence: 99%

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Soil carbon and nitrogen mineralization under different tillage systems and Permanent Groundcover cultivation between Orange trees

Balota

Auler

2011

Rev. Bras. Frutic.

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“…Microbial biomass was calculated based on the differences between C and N extracted from the fumigated and unfumigated soil samples using conversion factors KC = 0.33 for C mic (Sparling & West, 1988) and KN = 0.54 for N mic (Brookes et al, 1985). Basal respiration was obtained from the measurement of CO 2 released from the unfumigated soil using NaOH to trap CO 2 followed by flow injection analysis for electric conductivity (Balota et al, 2004). The microbial metabolic quotient (qCO 2 ) was calculated by dividing basal respiration by the C mic , expressed as μg g -1 h -1 C-CO 2 in soil.…”

Section: Soil Microbial Analysesmentioning

confidence: 99%

“…Soil microbial density and biomass are widely used to measure variations in the effects of agricultural managements (Matsuoka et al, 2003;Balota et al, 2004;Ochiai et al, 2008) because they respond faster than chemical and physical variables.…”

Section: Introductionmentioning

confidence: 99%

Alterações nas propriedades químicas e microbianas de solos cultivados com videiras sob manejo orgânico e convencional no sul do Brasil

Amaral

Sena

Schwan-Estrada

et al. 2011

Rev. Bras. Ciênc. Solo

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Compost and phosphorus amendments for stimulating microorganisms and growth of ryegrass in a Ferralsol and a Luvisol

Khan

Joergensen

2011

Z. Pflanzenernähr. Bodenk.

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A greenhouse pot experiment was carried out to investigate the effects of different P-fertilizer application forms (triple superphosphate [TSP], compost + TSP, TSP-enriched compost) on the growth of ryegrass and the soil microbial biomass. The fertilizers were applied at equivalent doses for all nutrients to a neutral Luvisol in comparison with an acidic Ferralsol. Fertilizer application led to significantly increased contents of microbial biomass C, N, and P. Furthermore, yields of shoot C and root C, and concentrations of P, Ca, Mg, K, Fe, and Mn in shoots and roots were significantly increased. These increases always followed the order TSP < compost + TSP < TSP-enriched compost. Sole TSP application led only to maximum concentrations of N and S.In the Ferralsol, TSP had only minimal positive effect on the P concentration of the grass shoots. The positive effect of TSP-enriched compost, i.e., incubating TSP together with compost for 24 h, did not differ between the neutral Luvisol and the acidic Ferralsol, i.e., the effect is independent of the soil type. Consequently, soluble inorganic P fertilizer should generally be mixed into an organic fertilizer before application to soil.

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Long-term tillage and crop rotation effects on microbial biomass and C and N mineralization in a Brazilian Oxisol

Cited by 260 publications

References 39 publications

Soil carbon and nitrogen mineralization under different tillage systems and Permanent Groundcover cultivation between Orange trees

Soil carbon and nitrogen mineralization under different tillage systems and Permanent Groundcover cultivation between Orange trees

Alterações nas propriedades químicas e microbianas de solos cultivados com videiras sob manejo orgânico e convencional no sul do Brasil

Compost and phosphorus amendments for stimulating microorganisms and growth of ryegrass in a Ferralsol and a Luvisol

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