Nitrogen immobilization in paddy soils as affected by redox conditions and rice straw incorporation

Said-Pullicino, Daniel; Cucu, Maria Alexandra; Sodano, Marcella; Birk, Jago Jonathan; Glaser, Bruno; Celi, Luisella

doi:10.1016/j.geoderma.2013.06.020

Cited by 117 publications

(55 citation statements)

References 62 publications

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“…The differences observed in N immobilisation in MB between S2 and S3 could be attributed to the rice straw added to S2 at the end of the previous summer season. Rice straw is richer in C than the soybean straw of S3 and therefore required high amounts of N for soil microbes to achieve its decomposition (Said‐Pullicino et al ., ).…”

Section: Discussionmentioning

confidence: 97%

Short‐term Impacts on Soil‐quality Assessment in Alternative Land Uses of Traditional Paddy Fields in Southern Brazil

et al. 2016

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No‐till, crop diversity and integrated crop–livestock systems are proposed managements to increase agriculture sustainability in the rice paddies of the Southern Brazilian lowlands and avoid degradation in the region. Because soil is considered a key medium in which management modifications can be measured, our study aimed to evaluate soil‐quality impacts by measuring carbon and nitrogen stocks and microbial activity 18 months after the adoption of different paddy‐farming systems in an Albaqualf soil of Southern Brazil. The treatments consisted of five paddy‐farming systems with a range of vegetation diversity (both in time and in space) and grazing seasons. In addition, a reference area (i.e. native forest) was sampled for comparison. We verified that soil quality was affected over the short term through the adoption of no‐till, crop diversity and integrated grazing practices. However, during the study period, only the system with low anthropic and/or mechanical intervention and high plant diversity differed from the traditional paddy land‐use approach in Brazil in terms of soil‐quality effects. This system achieved a carbon management index of 49 (approximately half that of the native forest) and had the highest enzymatic activity (similar to native forest). These outcomes were primarily due to an increase in the particulate organic matter fraction of the soil carbon stock (4·6 Mg ha−1 more than in rice monocropping). To evaluate changes in soil quality over the long term, additional studies are required. Copyright © 2016 John Wiley & Sons, Ltd.

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Section: Discussionmentioning

confidence: 97%

Short‐term Impacts on Soil‐quality Assessment in Alternative Land Uses of Traditional Paddy Fields in Southern Brazil

et al. 2016

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“…The observed decrease in k for both samples could be caused by nitrogen volatilization (NH 3 , N 2 , and N 2 O), which depends on the rate of fertilizer application and soil properties [4,34]. Fig.…”

Section: Batch Incubationmentioning

confidence: 90%

“…Due to its negative charge, NO 3 -is known to be more mobile in the soil-water environment than the positively charged NH 4 + ions [16,18,34]. For .…”

Section: Batch Incubationmentioning

confidence: 99%

Transport of Nitrogen Compounds through Subsoils in Agricultural Areas: Column Tests

Fronczyk¹,

Sieczka²,

Lech³

et al. 2016

Pol. J. Environ. Stud.

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“…Thus, the microbial immobilization efficiency of maize residue‐N was much higher than that of fertilizer‐N after annual maize residue mulching. Because microbial transformation is a crucial process for N stabilization and storage in soil (Nannipieri & Eldor, ; Said‐Pullicino et al, ), the preferential accumulation of maize residue‐N in microbial residues enhanced the stabilization of maize residue‐N compared with fertilizer‐N in soil. In addition, the fungal and bacterial residues functioned differently in soil‐N turnover.…”

Section: Discussionmentioning

confidence: 99%

“…The application of crop residues with wide carbon/nitrogen (C/N) ratios can temporarily immobilize N during microbial decomposition (Gentile, Vanlauwe, van Kessel, & Six, 2009;Tremblay & Benner, 2006). However, microbially immobilized fertilizer-N stimulated by rice straw incorporation was recently determined to account for only a minor portion (less than 10%) of the N utilized for microbial growth (Said-Pullicino et al, 2014). This research thus implied that a very large portion of microbially immobilized N probably originated from the degrading straw.…”

Section: Introductionmentioning

confidence: 99%

Comparing microbial transformation of maize residue‐N and fertilizer‐N in soil using amino sugar‐specific ¹⁵N analysis

Zhao

Liu³

et al. 2019

European J Soil Science

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In agroecosystems, both fertilizer‐nitrogen (N) and crop residue‐N make important contributions to soil‐N retention. However, how different N sources are dynamically involved in microbial processes and how they govern soil‐N transformations is poorly understood. A field experiment with half‐yield maize residue mulching was conducted in an Alfisol. The 15N‐labelled fertilizer and maize (Zea mays L.) residue were applied in the first year and then unlabelled ones were used in the following 4 years. The origins of newly formed fungal and bacterial residues were investigated by amino sugar‐specific 15N analysis. The aim was to gain insights into the microbial transformation dynamics of fertilizer‐N and maize residue‐N, as well as the maintenance of these exogenous N sources in soil. The initial transformation of fertilizer‐N into amino sugars was much more rapid than that of maize residue‐N. However, the eventual accumulation of maize residue‐N in amino sugars was significantly greater than that of fertilizer‐N. The transformation of maize residue‐15N into amino sugars was 3.5–6.7 times higher than that of fertilizer‐15N over the course of 5 years, implying a higher immobilization of maize residue‐derived N than fertilizer‐derived N in the soil. The effective transformation of maize residue‐N into microbial residues and the low level of maize residue‐derived mineral N accumulation suggested that a direct route probably dominated the microbial process. Moreover, the maize residue‐derived fungal glucosamine was more apt to accumulate than muramic acid, compared with that derived from fertilizer, suggesting that fungi contributed more to the direct assimilation of maize residue‐derived N. Such a pattern was mostly attributed to fungal decomposition of less bioavailable components of maize residue. Thus, maize residue‐N played a significant role in building soil organic N reserves, being a sustaining foundation for the effective utilization of fertilizer‐N by crops. Highlights Fungal and bacterial residues derived from maize residue‐N and fertilizer‐N were investigated. Fungi dominated maize residue‐N immobilization mostly via direct route. Maize residue‐N had higher microbial immobilization efficiency than fertilizer‐N. Maize residue‐N contributed dominantly to the building of soil organic N pool.

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Nitrogen immobilization in paddy soils as affected by redox conditions and rice straw incorporation

Cited by 117 publications

References 62 publications

Short‐term Impacts on Soil‐quality Assessment in Alternative Land Uses of Traditional Paddy Fields in Southern Brazil

Short‐term Impacts on Soil‐quality Assessment in Alternative Land Uses of Traditional Paddy Fields in Southern Brazil

Transport of Nitrogen Compounds through Subsoils in Agricultural Areas: Column Tests

Comparing microbial transformation of maize residue‐N and fertilizer‐N in soil using amino sugar‐specific ¹⁵N analysis

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Nitrogen immobilization in paddy soils as affected by redox conditions and rice straw incorporation

Cited by 117 publications

References 62 publications

Short‐term Impacts on Soil‐quality Assessment in Alternative Land Uses of Traditional Paddy Fields in Southern Brazil

Short‐term Impacts on Soil‐quality Assessment in Alternative Land Uses of Traditional Paddy Fields in Southern Brazil

Transport of Nitrogen Compounds through Subsoils in Agricultural Areas: Column Tests

Comparing microbial transformation of maize residue‐N and fertilizer‐N in soil using amino sugar‐specific 15N analysis

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Comparing microbial transformation of maize residue‐N and fertilizer‐N in soil using amino sugar‐specific ¹⁵N analysis