Effect of type and quality of two contrasting plant residues on CO2 emission potential of Ultisol soil: Implications for indirect influence of temperature and moisture

Hassan, Waseem; David, Julie; Abbas, Farhat

doi:10.1016/j.catena.2013.11.001

Cited by 38 publications

(19 citation statements)

References 41 publications

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“…The samples were air-dried and were passed through 2-mm sieve for further use in the incubation study. Soil texture, pH, electrical conductivity (EC), available P, N, extractable K, and organic matter (OM) and saturation percentage were determined by the method of Hassan (2013), Hassan, Akmal et al (2013), , Hassan, Chen, Cai et al (2013), Hassan, David, Abbas (2014), Hassan, Chen et al (2014), Hassan, Bano, Khatak et al (2014), Hassan, Bano, Bashir et al (2014) and . Some pertinent characteristics of the soil used in this study are given in Table 1.…”

Section: Physiochemical Analysismentioning

confidence: 99%

ACC-deaminase and/or nitrogen-fixing rhizobacteria and growth response of tomato (Lycopersicon pimpinellfoliumMill.)

Hassan

David

Bashir³

2014

Journal of Plant Interactions

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The study aimed to identify and select important plant growth-promoting rhizobacteria (PGPR) and examine the response of tomato growth upon inoculation. Inoculation with rhizobacterial isolates increased all the measured physical, chemical, and enzymatic growth parameters compared to control. However, the TAN1 isolate had the highest effect, and significantly (P < 0.05) increased the root length (8.25-fold), root fresh (8.36-fold) and dry (12.6-fold) weight, shoot length (6.92-fold), shoot fresh (7.18-fold) and dry (6.90-fold) weight, number of leaves (11.0-fold), chlorophyll a (6.25-fold), chlorophyll b (10.7-fold), carotenoid contents (8.80-fold), seedlings fresh (9.0-fold) and dry (8.71-fold) weight, plant macronutrient uptake, i.e. N (7.7-and 8.9-fold), P (10.5-and 11.4-fold), K (7.8-and 8.8-fold), , and Mg (12.6-and 9-fold) in shoot and root, plant micronutrient uptake, i.e. Zn (6.6-, 10.2-), Cu (9.3-, and 10.3-fold), Fe (7.7-and 10.7-fold), and Mn (4.7-and 5.7-fold) in shoot and root and plant antioxidant enzymes, i.e. glutathione S-transferase (10.7-fold), peroxidase (8.1-fold), and catalase (10.5-fold). Our results concluded that inoculation of agricultural crops with rhizobacteria is a very useful approach to increase the plant growth. The rhizobacteria having both 1-aminocyclopropane-1-carboxylate (ACC) deaminase and nitrogen-fixing activity are more effective than rhizobacteria possessing either ACC-deaminase or nitrogen-fixing activity alone for growth promotion of crops.Keywords: PGPR; ACC-deaminase; nitrogen fixation; ethylene and auxin; tomato IntroductionPlant growth-promoting rhizobacteria (PGPR) are free living microorganisms having beneficial effects on plants by colonizing their roots (Ahemad 2012). PGPR promote the plant growth by several direct and indirect ways (Ahemad 2012). Directly, PGPR provide the bacterium-synthesized compounds to the plants, facilitate the nutrient availability and uptake and production of certain phytohormones, e.g. auxin, cytokinins, ethylene, and abscisic acid and giberelins (Ahemad 2012). Indirectly, PGPR minimize or prevent the harmful effects of pathogenic organisms (Ahemad & Malik 2011), moreover, mobilize the nutrients in soils and improve the soil structure (Ahemad & Malik 2011). Inoculation of agricultural crops with PGPR results in multiple positive effects on plant, e.g. increase in the plant growth and vigor, increment in the chlorophyll, protein, proline, and antioxidant enzymes (e.g. peroxidase (POX), catalase, and glutathione reductase) activity that increase the plant immunity (Sahran & Nehra 2011). It has been observed that increased activity of antioxidant enzymes is correlated with resistance, against both biotic and abiotic stresses, in many plant species (Jan et al. 2011).At present, the use of microorganisms with the aim of improving crop production on sustainable basis has increased tremendously in various parts of the world (Glick 2012). This is due to the emerging demand for dependence diminishing of synthetic chemical products, to the grow...

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Section: Physiochemical Analysismentioning

confidence: 99%

ACC-deaminase and/or nitrogen-fixing rhizobacteria and growth response of tomato (Lycopersicon pimpinellfoliumMill.)

Hassan

David

Bashir³

2014

Journal of Plant Interactions

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“…These results are in harmony with the findings of Iqbal et al (2009), who showed that application of water at 60 and 80% of WHC caused higher increases in soil respiration in comparison to 20 and 40% of WHC in paddy, upland, woodland and orchard soils. Hassan et al (2014) found that alteration of soil moisture is considered as a vital factor in controlling soil respiration and then cumulative CO 2 in Ultisol soil. The highest values of cumulative CO 2 were noticed at K2W3 treatment (268, 478, 685, 894, 1042 and 1279 mg kgG 1 soil), whereas the lowest values were found at K0W1 (128,155,204,276,331 and 380 mg kgG 1 soil) after 5, 10, 20, 40, 80 and 120 days, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The highest values of cumulative CO 2 after 120 days could be also due to the increase of temperature in these periods. Increase of temperature could strongly enhance soil respiration that illustrated by cumulative CO 2 as a result of high microbial activity and mineralization of soil organic matter (Iqbal et al, 2009;Hassan et al, 2014).…”

Section: Res J Soil Biol 7 (3): 72-83 2015mentioning

confidence: 99%

Microbiological Indicators of a Clayey Soil Planted with Wheat (Triticum aestivum L.) as Affected by Potassium Fertilization and Different Water Regimes

Ali¹,

Meihy²

2015

Research J. of Soil Biology

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“…On the one hand, tree species may substantially alter the soil source or sink strength for greenhouse gases through root related processes (Fender et al 2013), and microbial processes play a central role in the global fluxes of the key biogenic CO 2 and are likely to respond rapidly to climate change (Singh et al 2010). On the other hand, other abiotic factors like temperature and moisture also regulate CO 2 production and emission by influencing decomposition of these incorporated organic inputs (Hassan et al 2014). In addition, for some rainforest ecosystems, soil texture and drainage capacity constraints are more important flux controlling factors than vegetation and seasonal variability (Rowlings et al 2012).…”

Section: Variations Of Co 2 Fluxes Among the Three Forest Typesmentioning

confidence: 99%

Soil Carbon Dioxide Fluxes from Three Forest Types of the Tropical Montane Rainforest on Hainan Island, China

Jiang

Chen

Peng

et al. 2016

Water Air Soil Pollut

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Tropical forests play an important role in carbon cycle. However, the temporal and spatial variation in soil carbon dioxide (CO 2 ) emission of tropical forest remains uncertain, especially near the Tropic of Cancer. In this research, we studied the annual soil CO 2 fluxes from three tropical montane rainforests on the Hainan Island of China (pristine montane rainforest, PF; secondary montane rainforest, SF; and Podocarpus imbricatus plantation, PP). The results showed a lower annual average soil CO 2 flux as 6.85 ± 0.52 Mg C-CO 2 ha −1 (9. Research Insititute of Forestry Science, Garze Tibetan Autonomous Prefecture, Kangding 626000, China relation (P < 0.05) between CO 2 fluxes and soil moisture content was found for SF and PF, but not for PP (P > 0.05). The CO 2 flux was significantly correlated (P < 0.05) with water-filled pore space only for PF. In conclusion, our results suggested soil CO 2 fluxes in the three forest types that exhibit obviously spatial and temporal variation, and the temperature is the major factor affecting soil CO 2 fluxes from this region.

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Effect of type and quality of two contrasting plant residues on CO2 emission potential of Ultisol soil: Implications for indirect influence of temperature and moisture

Cited by 38 publications

References 41 publications

ACC-deaminase and/or nitrogen-fixing rhizobacteria and growth response of tomato (Lycopersicon pimpinellfoliumMill.)

ACC-deaminase and/or nitrogen-fixing rhizobacteria and growth response of tomato (Lycopersicon pimpinellfoliumMill.)

Microbiological Indicators of a Clayey Soil Planted with Wheat (Triticum aestivum L.) as Affected by Potassium Fertilization and Different Water Regimes

Soil Carbon Dioxide Fluxes from Three Forest Types of the Tropical Montane Rainforest on Hainan Island, China

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