Short-term effects of nutrient management regimes on biochemical and microbial properties in soils under rainfed ginger (Zingiber officinale Rosc.)

Dinesh, R.; Srinivasan, V.; Hamza, S.; Manjusha, A.; Kumar, Parveen

doi:10.1016/j.geoderma.2011.12.025

Cited by 40 publications

(34 citation statements)

References 63 publications

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“…Positive correlation between N MIC and DON (r = 0.72) suggested that inorganic fertilization especially N enhanced DON levels. Earlier reports also indicate significantly positive effects of N fertilization on DON [12,23]. A clear positive effect of combined application of PGPR and NPK on N MIN was observed.…”

Section: Discussionsupporting

confidence: 53%

“…Our results suggested little or no change in C MIC levels in treatments with only NPK. This is most likely due to application of N fertilizer as urea at rates equivalent to 100 or 75 % N. No changes or reductions in soil C MIC that are attributable to N fertilization have been reported earlier [12,22,27]. The supply of readily metabolisable C (DOC) in the treatments with PGPR ?…”

Section: Discussionmentioning

confidence: 99%

“…Exclusive use of only fertilizers have been found to cause a significant reduction in microbial biomass C [34,35] as well as reductions in soil respiration (SR) and dehydrogenase (DH), acid phosphatase (AcP), and b-glucosidase (bG) activities [12]. We hypothesized that use of PGPR along with fertilizers would attenuate such negative or insignificant effects of sole NPK application on important soil microbial and biochemical processes.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Plant Growth-Promoting Rhizobacteria and NPK Fertilizers on Biochemical and Microbial Properties of Soils Under Ginger (Zingiber officinale) Cultivation

et al. 2013

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For this study, plant growth-promoting rhizobacteria (PGPR) were isolated from soils under ginger and shortlisted based on their nutrient mobilization traits. The promising PGPR (Burkholderia cepacia, Klebsiella sp., Serratia marcescens, and Enterobacter sp.) were either applied alone or in combination with varying rates of NPK fertilizers to determine their effect on sensitive biochemical and microbial properties of soils under ginger (Zingiber officinale Rosc.). The properties studied were soil organic carbon, dissolved organic-C (DOC), and -N, microbial biomass-C (C MIC ), -N (N MIC ) and -P (P MIC ), net N mineralized (N MIN ), soil respiration (SR), metabolic quotient (q CO 2 ) and activities of dehydrogenase (DHA), acid phosphatase (AcP), b-glucosidase (bG), and urease (UR). Results revealed a 24 % increase in mean DOC level in treatments with PGPR ? NPK compared to control. Similarly, mean C MIC and N MIC levels were greater by 27 and 71 %, respectively, in treatments involving PGPR ? NPK compared to treatments with only fertilizers. Also, combined application of PGPR and fertilizers positively influenced P MIC and N MIN rates compared to sole application of PGPR or NPK. While SR did not vary considerably among the treatments, q CO 2 levels across PGPR ? NPK treatments were lower by 15-20 % relative to treatments with only NPK or PGPR. Results also revealed that DHA activity was on an average greater by 49.0 %, UR by 15 %, AcP by 40 %, and bG by 35 % in PGPR ? NPK treatments compared to only NPK.

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Section: Discussionsupporting

confidence: 53%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Plant Growth-Promoting Rhizobacteria and NPK Fertilizers on Biochemical and Microbial Properties of Soils Under Ginger (Zingiber officinale) Cultivation

et al. 2013

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“…The qMIC, an index expressed by the relation between MBC and TOC [32], presented higher value for the naturally infested soil than for the artificially infested one. In the latter, although TOC is smaller, the carbon associated to the microbial biomass is more elevated, as observed by Powlson et al [33].…”

Section: Resultsmentioning

confidence: 94%

Microbial Attributes of Infested Soil Suppressive to Bacterial Wilt by Bokashi Amendments

Fontenelle¹,

Lopes²,

Lima³

et al. 2015

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Bacterial wilt, caused by Ralstonia solanacearum, is a major tomato disease in tropical and subtropical regions. It is difficult to be managed, since no single measure confers significant contribution for disease control. Among the cultural practices available for disease management, bokashi provides nutrients to the plants, increasing the microbial biomass, improving the quality of the soil and, in some cases, protecting plants against diseases. In this work, we evaluated the effect of three different bokashis (Embrapa-BE; poultry-BP and cattle-BC) in two soils artificially and naturally infested with R. solanacearum, on the suppression of bacterial wilt in tomato. Disease control is discussed upon measurements on the contents of microbial biomass carbon (MBC), on total organic carbon (TOC), on basal respiration (BR), on metabolic coefficient (qCO2) and on microbial coefficient (qMIC). The experiment was implemented in greenhouse, with completely randomized design and factorial arrangement of treatments 2 × 3 (two soils × three bokashis). Disease suppression, assessed through wilt incidence 20 and 30 days after transplanting, was better observed in the naturally infested soil, where BP and BE were more efficient in controling the disease. TOC contents were higher in the artificially infested soil compared to that naturally infested, whereas the qMIC presented higher value for the naturally infested soil, which had greater contribution of MBC. Higher rates of BR and qCO2 were observed for the naturally infested soil with BC, probably indicating high plant stress caused by the disease in this treatment. Moreover, a high and positive correlation coefficient was found between the variables qCO 2 and the number of infected plants at 30 days after transplanting. In the artificially infested soil, a negative correlation was found between the number of infected plants at 20 days after transplanting and TOC.

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“…In forest areas, the MBN/Total N ratio is related to the diversity of the plant species with effects that are similar to those of grasses (Santos et al, 2007). The MBC/MBN ratio was low in all of the management and land use systems, which was potentially related to the increase in the soil N content due to nitrogen fertilization, which increased the amount of dissolved nitrogen and was immobilized by soil microorganisms (Dinesh et al, 2012). The NT-4 area had the lowest average MBC/MBN ratio, which was potentially related to low Corg levels (Table 1) or the high rate of Corg decomposition.…”

Section: Resultsmentioning

confidence: 98%

Soil attributes under different crop management systems in an Amazon Oxisols

et al. 2015

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Soil biological properties have a high potential for use in assessing the impacts of crop systems. The objective of this study is to evaluate the effects of cropping systems on the biological attributes of an oxisol in the Amazonian state of Pará. The treatments consisted of approximately 20-year-old secondary vegetation, recovered pasture, no-tillage systems (NT) maintained for 4 and 8 years after planting with corn (Zea mays L.) and soybean (Glycine max L.), and conventional tillage (CT) systems every 2 years after planting with rice (Oryza sativa L.) and soybean. The microbial biomass to nitrogen ratio was higher in the NT system (0.68 mg kg -1 ), and the NT system had greater microbial NT8. Thus, the contributions of organic matter from straw improved the soil quality in these areas. The total organic carbon (TOC) content was greater in the secondary forest and CT areas (46.7 and 48.0 mg kg -1 , respectively), potentially due to the higher amounts of organic matter and organic matter mineralization in these areas. However, the largest TOC stocks were observed in the pasture, which corresponded with greater carbon storage (63.5 Mg ha -1). By contrast, the no-till systems were not efficient for storing C, with concentrations of 5.0 and 5.3 Mg ha -1 in NT-4 and NT-8, respectively. These results may reflect the short period that these systems were adopted and the vast microbial activity that was observed in these areas, with microbial quotients of 8.03 and 10.41% in NT-4 and NT-8, respectively.

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Short-term effects of nutrient management regimes on biochemical and microbial properties in soils under rainfed ginger (Zingiber officinale Rosc.)

Cited by 40 publications

References 63 publications

Effects of Plant Growth-Promoting Rhizobacteria and NPK Fertilizers on Biochemical and Microbial Properties of Soils Under Ginger (Zingiber officinale) Cultivation

Effects of Plant Growth-Promoting Rhizobacteria and NPK Fertilizers on Biochemical and Microbial Properties of Soils Under Ginger (Zingiber officinale) Cultivation

Microbial Attributes of Infested Soil Suppressive to Bacterial Wilt by Bokashi Amendments

Soil attributes under different crop management systems in an Amazon Oxisols

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