Microscopic Structural Changes in Paddy Straw Pretreated with Trichoderma reesei MTCC 164 and Coriolus versicolor MTCC 138

Phutela, Urmila Gupta; Sahni, Nidhi

doi:10.1007/s12088-012-0321-8

Cited by 18 publications

(8 citation statements)

References 10 publications

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“…In addition, the amount of cellulose decreased because the amorphous region in cellulose was decomposed. The decrease in the crystallinity of the cellulose occurred because the hydrogen bonding among cellulose, hemicellulose, and lignin was fractured . The plasticity of RS was improved by the inoculant and the mechanical properties of its composites.…”

Section: Resultsmentioning

confidence: 99%

Physicochemical changes in rice straw after composting and its effect on rice‐straw‐based composites

Huang

Zhao

et al. 2017

J of Applied Polymer Sci

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A composting method was applied to improve the processability of rice straw (RS) and its interfacial interaction with a biodegradable resin, hydrolyzed‐soy‐protein‐modified urea formaldehyde adhesives. The composted RS was characterized by fiber testing, Fourier transform infrared spectroscopy, thermogravimetry, differential scanning calorimetry, and scanning electron microscopy. We found that the particle size of RS was reduced from 0.6–2.0 to 0.2–0.6 mm. The cellulose content decreased, and the lignin content increased; unstable bonds were decomposed after composting. All of the results were beneficial for improving the plasticity of RS. Composted RS with inoculant exhibited a higher peak degradation temperature (352 °C) than the untreated RS (347 °C). The porous structure and tissue in RS were destroyed by the microorganism. The best bonding results were obtained by the composted RS with inoculant. Compared with untreated composites, the modulus of rupture, modulus of elasticity, and tensile strength of the composites were improved by 14.94, 25.36, and 27.21%, respectively. In addition, a mechanism of the structural changes of RS during composting was also proposed. The full biodegradable composites have potential applications in agriculture toward the achievement of sustainable development. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44878.

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Section: Resultsmentioning

confidence: 99%

Physicochemical changes in rice straw after composting and its effect on rice‐straw‐based composites

Huang

Zhao

et al. 2017

J of Applied Polymer Sci

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“…However, only 120 kg ha -1 of Si were returned to our experimental field as RSC. Phutela and Sahni (2013) showed that fungi promote the solubilization of Si components in rice straw, which faster than that of other nutrients (N, P, K, Ca, Mg, Fe, Zn, Mn, Cu) when rice straw is continuously removed from paddy fields in the Mekong Delta. Our data on available Si concentrations in the surface (0 -10 cm) layer (Fig.…”

Section: Discussionmentioning

confidence: 99%

Effects of the Continuous Application of Rice Straw Compost and Chemical Fertilizer on Soil Carbon and Available Silicon under a Double Rice Cropping System in the Mekong Delta, Vietnam

Watanabe

Luu

Inubushi

2017

JARQ

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We conducted a series of field experiments to study the effects of rice straw compost (RSC) and chemical fertilizer application on soil carbon and silicon under a double rice cropping system for 25 crops successive in the Mekong Delta, Vietnam. The results showed that the continuous application of RSC (6 Mg ha -1 as fresh weight for each crop) caused a higher yield and more available silicon than treatment without RSC. Available silicon in the surface (0 -10 cm from the ground surface) soil was 36.3 to 38.7 mg Si kg -1 in treatment with RSC, while it was 24.2 to 30.0 mg Si kg -1 for treatment without RSC. Regardless the amount of chemical fertilizer applied, the rice yields for treatment without RSC were lower than those for treatment with RSC and entailed less chemical fertilizer. Moreover, RSC application used in combination with moderate doses of chemical fertilizer increased total carbon in the soil at a rate of 356 to 401 kg C ha -1 year -1. Our results suggested that Si availability in paddy soil must be maintained or increased in order to maintain rice yield, for which the application of rice straw compost offers an option. Our results also showed that the application of RSC increased total-C in the soil, suggesting that paddy fields can be used effectively for carbon sequestration.

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“…However, Wickramasinghe and Rowell 22 demonstrated that rice straw added to soil suspensions increased the silicon concentration during incubation. Phutela and Sahni 15 showed that fungi promotes the solubilization of silica components in rice straw.…”

Section: Discussionmentioning

confidence: 99%

Combined Effects of the Continual Application of Composted Rice Straw and Chemical Fertilizer on Rice Yield under a Double Rice Cropping System in the Mekong Delta, Vietnam

Watanabe

Luu

Nguyen

et al. 2013

JARQ

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We conducted a 12-year field experiment to study the combined effects of rice straw compost and chemical fertilizer application on a double rice cropping system in the Mekong Delta, Vietnam and established 7 treatments using a randomized block design with 3 replications. We calculated the yields of treatments relative to those of conventionally fertilized plots (i.e. with no added rice straw compost), and analyzed their annual trends. In the plots with rice straw compost, we observed a positive trend over 12 continuous wet cropping seasons. In comparison with conventional fertilization, the application of rice straw compost with reduced chemical fertilizer can maintain rice productivity over a longer period. We analyzed the nutrient status of the rice straw at harvest over 4 cropping seasons and observed that the Si concentration of the rice straw in conventionally fertilized plots was significantly lower than that in the plots where rice straw compost was applied. The N, P and Mg concentrations of the rice straw increased with the fertilizer application rate, while the concentrations of K, Ca, Mn, Fe, Zn, and Cu did not differ significantly among treatments. Our results suggest that continuous removal of rice straw may reduce the Si availability in soil, thereby decreasing rice productivity. In addition, we verified that rice straw compost can be an effective source of silicon for paddy rice.

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Microscopic Structural Changes in Paddy Straw Pretreated with Trichoderma reesei MTCC 164 and Coriolus versicolor MTCC 138

Cited by 18 publications

References 10 publications

Physicochemical changes in rice straw after composting and its effect on rice‐straw‐based composites

Physicochemical changes in rice straw after composting and its effect on rice‐straw‐based composites

Effects of the Continuous Application of Rice Straw Compost and Chemical Fertilizer on Soil Carbon and Available Silicon under a Double Rice Cropping System in the Mekong Delta, Vietnam

Combined Effects of the Continual Application of Composted Rice Straw and Chemical Fertilizer on Rice Yield under a Double Rice Cropping System in the Mekong Delta, Vietnam

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