Long-term effects of fertilization and manuring on productivity and soil biological properties under rice (<i>Oryza sativa</i>)–wheat (<i>Triticum aestivum</i>) sequence in Mollisols

Bhatt, Bhawana; Chandra, Ramesh; Ram, Shri

doi:10.1080/03650340.2015.1125471

Cited by 39 publications

(27 citation statements)

References 44 publications

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“…Liu, et al, (2010) recorded the highest microbial respiration in soil (6.01 µg CO 2 -C g -1 day -1 ) under NP + FYM treatment followed by FYM treatment and lowest (3.99 µg CO 2 -C g -1 day -1 ) in control. These results also corroborate with the findings of Bhatt et al, (2016), they reported the maximum and significantly higher CO 2 evolution with 100% NPK + 15 t FYM ha -1 over all other treatments, after both rice and wheat crops, was evident.…”

Section: Microbial Respirationsupporting

confidence: 82%

“…The beneficial effects of FYM + NPK on soil urease activity may be attributed to higher level of organic carbon and nitrogen that led to greater microbial proliferation in soil vis-à-vis greater amount of urease enzyme synthesis. The stimulatory effects of nutrient supply through organic sources on urease activity are evident in the literature (Bhatt et al, 2016;Jadhav et al, 2016;Saha et al, 2008).…”

Section: Urease Activitymentioning

confidence: 86%

“…The enhanced dehydrogenase activity in soil receiving balanced fertilization along with FYM could be due to improvement in soil organic carbon, total N and P status through incorporated FYM, enhanced root biomass, and rhizodeposition that enhanced the microbial proliferation leading to stimulated microbial activity and organic matter degradation vis-a-vis dehydrogenase activity in soil. Organic and integrated nutrient supply (FYM; NP + FYM; NPK + FYM) supported the highest dehydrogenase activity (Srinivas et al, 2015;Bhatt et al, 2016;Liu et al, 2010). The enhanced dehydogenase activity was due to higher organic matter content and relatively higher microbial activity as indicated by higher MBC.…”

Section: Dehydrogenase Activitymentioning

confidence: 95%

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Long-Term Impact of Balanced and Imbalanced Fertilization in Rice under Rice-Wheat Sequence in Mollisols on Relationship between Microbial Activity and Yield

Yaseen¹,

Raverkar²,

Chandra³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

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Section: Microbial Respirationsupporting

confidence: 82%

Section: Urease Activitymentioning

confidence: 86%

Section: Dehydrogenase Activitymentioning

confidence: 95%

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Long-Term Impact of Balanced and Imbalanced Fertilization in Rice under Rice-Wheat Sequence in Mollisols on Relationship between Microbial Activity and Yield

Yaseen¹,

Raverkar²,

Chandra³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

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“…For example, unbalanced fertilization leads to nutrient deficiency and causes subsequent shifts in the composition of the soil microbial community ( Eo and Park, 2016 ). Long-term imbalances in fertilizations can even adversely affect soil biological health ( Bhatt et al, 2016 ). By contrast, Ling et al (2014) reported that long-term balanced fertilizations help the soil to build bacterial diversity and enzyme activities.…”

Section: Introductionmentioning

confidence: 99%

Balanced Fertilization Decreases Environmental Filtering on Soil Bacterial Community Assemblage in North China

et al. 2017

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Although increasing evidences have emerged for responses of soil microorganisms to fertilizations, the knowledge regarding community assemblages that cause variations in composition is still lacking, as well as the possible feedback to soil fertility. Phylogenetic conservatism of species indicates their similar environmental preferences and/or function traits and phylogenetic signals further can infer community assemblages and influenced ecological processes. Here, we calculated the mean pairwise phylogenetic distance and nearest relative index, characterizing phylogenetic signal and the undergone ecological process to evaluate the community assembly of soil bacterial phylotypes in 20-year fertilized soils. The bacterial community assembly is structured by environmental filtering, regardless of fertilization regime. Soil phosphorous (P) availability imposes selection on community assemblage and influences their community turnover among fertilizations. When P nutrient lacks, the effect of environmental filtering becomes stronger, hence bacterial functional traits become more coherent; this process results into increased intraspecific interactions characterized by co-occurrence network analysis. In contrast, when P nutrient becomes abundant, the environmental selection is mitigated; function traits are evened. This process reduces intraspecific interactions and increases carbon sequestration efficiency, which is finally of great favor to the increases in soil fertility. This study has made the first attempt, at the bacterial level, to understand how fertilization affects agroecosystems. When more phylogenetic information on how nutrient cycling-related microbes respond to fertilization becomes available, the systematic knowledge will eventually provide guidance to optimal fertilization strategies.

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“…Priming mechanisms with respect to N 2 O production in soil are not well investigated, but one possible mechanism is the presence of residual urease. Urease activities in soils receiving long-term applications of urea were higher than in nonfertilized treatments in semi-arid areas of India and China (Hu et al 2014;Bhatt et al 2016). Urease is remarkably stable and long-lived in soils, even following air-drying (Zantua and Bremner 1977).…”

Section: Resultsmentioning

confidence: 93%

Effects of Long-term Fertilization History and Current N and S Fertilizer Applications on Nitrous Oxide Production from S-deficient Soils in a Laboratory Incubation

2017

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Nitrous oxide (N 2 O) production in four soils with unique fertilization management historiescollected from long-term fertility treatments receiving no fertilizer, NPKS, PKS, and NPK in a 5 yr cereal-forage rotationin response to three sources of added N [100 kg N ha −1 urea, NH 4 Cl, Ca(NO 3) 2 ] with and without co-addition of elemental S (20 kg S ha −1) plus a 0-N and 0-S control was investigated in a 7 wk laboratory incubation in a loamtextured soil at 40% water-filled pore space. In all soils, cumulative N 2 O emissions and apparent, cumulative, net nitrification were significantly higher following addition of urea compared with other N fertilizers with and without co-addition of elemental S. Lower N 2 O emissions were observed in soils without a history of long-term N fertilization following addition of urea compared with soils that had historically received urea. Because the preincubation soil total N levels were similar in soils with a history of urea application (NPKS) and without urea (PKS), the results of this investigation suggest that the higher N 2 O production in the NPKS soil may be the result of a priming effect and (or) changes in microbial community composition induced by long-term urea applications rather than differences in the long-term soil N balance.

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Long-term effects of fertilization and manuring on productivity and soil biological properties under rice (Oryza sativa)–wheat (Triticum aestivum) sequence in Mollisols

Cited by 39 publications

References 44 publications

Long-Term Impact of Balanced and Imbalanced Fertilization in Rice under Rice-Wheat Sequence in Mollisols on Relationship between Microbial Activity and Yield

Long-Term Impact of Balanced and Imbalanced Fertilization in Rice under Rice-Wheat Sequence in Mollisols on Relationship between Microbial Activity and Yield

Balanced Fertilization Decreases Environmental Filtering on Soil Bacterial Community Assemblage in North China

Effects of Long-term Fertilization History and Current N and S Fertilizer Applications on Nitrous Oxide Production from S-deficient Soils in a Laboratory Incubation

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