Effect of tillage and N fertilization on microbial physiological profile of soils cultivated with wheat

Diosma, Gabriela; Aulicino, Mónica Beatriz; Chidichimo, Hugo Oscar; Balatti, Pedro Alberto

doi:10.1016/j.still.2005.12.008

Cited by 21 publications

(17 citation statements)

References 19 publications

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“…Thus high inputs of cow manure and crop residues in the OCF resulted in enhanced soil quality compared with FGL. Various studies have used community level physiological profiles (CLPP) to differentiate microbial communities from diverse habitats (Staddon et al, 1997;Shannon et al, 2002;Diosma et al, 2006;Sala et al, 2008;Nautiyal, 2009;Nautiyal et al, 2010). Such information allows examination of the natural variation and diversity of microbial communities and offers opportunities to monitor changes in microbial diversity caused by management practices.…”

Section: à136mentioning

confidence: 99%

“…There is paucity of information on the characteristics of soil microbial communities in agroecosystems, particularly in the semi-arid regions of the world growing crops in drylands. Microbial communities have great potential for temporal or spatial change, and therefore understanding their community dynamics is important in both basic and applied ecological contexts (Derry et al, 1999;Diosma et al, 2006;Esperschutz et al, 2007;Nannipieri et al, 2008;Shishido et al, 2008;Wu et al, 2008;Nautiyal et al, 2010). A rapid, community level approach for assessing patterns of sole carbon source utilization by mixed microbial samples has been used to study microbial community dynamics (Diosma et al, 2006;Nautiyal et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Changes in soil physico-chemical properties and microbial functional diversity due to 14 years of conversion of grassland to organic agriculture in semi-arid agroecosystem

Nautiyal

Chauhan

Bhatia³

2010

Soil and Tillage Research

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Section: à136mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Changes in soil physico-chemical properties and microbial functional diversity due to 14 years of conversion of grassland to organic agriculture in semi-arid agroecosystem

Nautiyal

Chauhan

Bhatia³

2010

Soil and Tillage Research

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“…The improved nutrient cycling leads to soil fertility and subsequently enhance plant growth and the crop yield (4). Soil enzymes and microbial biomass have been considered as the major indicators of soil quality due to their relationship to soil fertility, ease of measurement, and high sensitivity to changes originated by the management and environmental factors (7). Experiments have revealed a positive correlation between soil management systems and agriculturally beneficial microorganisms (17).…”

Section: Introductionmentioning

confidence: 99%

Conservation tillage, optimal water and organic nutrient supply enhance soil microbial activities during wheat (Triticum Aestivum L.) cultivation

Sharma¹,

Singh²,

Singh³

2011

Braz. J. Microbiol.

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The field experiments were conducted on sandy loam soil at New Delhi, during 2007 and to investigate the effect of conservation tillage, irrigation regimes (sub-optimal, optimal and supra-optimal water regimes), and integrated nutrient management (INM) practices on soil biological parameters in wheat cultivation. The conservation tillage soils has shown significant (p<0.05) increase in soil respiration (81.1%), soil microbial biomass carbon (SMBC) (104%) and soil dehydrogenase (DH) (59.2%) compared to the conventional tillage soil. Optimum water supply (3-irrigations) enhanced soil respiration over sub-optimum and supra-optimum irrigations by 13.32% and 79% respectively. Soil dehydrogenase (DH) activity in optimum water regime has also increased by 23.33% and 8.18% respectively over the other two irrigation regimes. Similarly, SMBC has also increased by 12.14% and 27.17% respectively in soil with optimum water supply compared to that of sub-optimum and supra-optimum water regime fields. The maximum increase in soil microbial activities is found when sole organic source (50% Farm Yard Manure+25% biofertilizer+25% Green Manure) has been used in combination with the conservation tillage and the optimum water supply. Study demonstrated that microbial activity could be regulated by tillage, water and nitrogen management in the soil in a sustainable manner.

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“…Ecosystem functioning and disturbance can be assessed by microbial diversity and maintenance of soil microbial diversity is crucial for agriculture to be considered sustainable (Diosma et al 2006). Inoculation of plant growth promoting rhizobacteria encourages beneficial symbiotic or mutualistic microorganisms that can act as plant growth promoting and biocontrol agents .…”

Section: Discussionmentioning

confidence: 99%

Reducing the allelopathic effect of Parthenium hysterophorus L. on wheat (Triticum aestivum L.) by Pseudomonas putida

Mishra

Nautiyal

2011

Plant Growth Regul

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The present study evaluates the role of Pseudomonas putida NBRIC19 in alleviating biotic stress of Parthenium hysterophorus (Parthenium) in Triticum aestivum. Due to presence of Parthenium there was 43.76, 53.08 and 78.65% inhibition in root length, shoot length and dry weight of wheat respectively. This inhibition was recovered when P. putida NBRIC19 treatment resulted in 52.29, 28.73 and 76.31% increase in root length, shoot length and dry weight respectively as compared to control. P. putida NBRIC19 was able to form more biofilm under toxic environment of allelochemicals and enhanced expression of stress responsive genes in wheat. Inoculated wheat plants showed lower activity of catalase and ascorbate peroxidase under biotic stress of Parthenium indicating that inoculated plants felt less stress as compared to uninoculated plants. Microbial community structure in bacterized and nonbacterized wheat rhizosphere in presence and absence of Parthenium, was investigated using Biolog. There was significant increase in microbial diversity in P. putida NBRIC19 bacterized wheat rhizosphere. Functional microbial diversity revealed that P. putida NBRIC19 had shifted the microflora in such a manner that utilization of phytotoxic allelochemicals increased to lessen its toxic effect and finally it resulted in better growth of wheat in presence of Parthenium. Principal component analysis showed that microbial community function in nonbacterized wheat rhizosphere in presence (WPC) and absence (WC) of Parthenium is totally different from each other but due to P. putida NBRIC19 treatment there was close clustering of WPT and WT indicating a total shift in microbial community structure.

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Effect of tillage and N fertilization on microbial physiological profile of soils cultivated with wheat

Cited by 21 publications

References 19 publications

Changes in soil physico-chemical properties and microbial functional diversity due to 14 years of conversion of grassland to organic agriculture in semi-arid agroecosystem

Changes in soil physico-chemical properties and microbial functional diversity due to 14 years of conversion of grassland to organic agriculture in semi-arid agroecosystem

Conservation tillage, optimal water and organic nutrient supply enhance soil microbial activities during wheat (Triticum Aestivum L.) cultivation

Reducing the allelopathic effect of Parthenium hysterophorus L. on wheat (Triticum aestivum L.) by Pseudomonas putida

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