Rice performance and natural infection with blast (Pyricularia oryzae Cav.) under different algalization techniques and rates of fertilizer nitrogen

Yanni, Y. G.; Sehly, M. R.

doi:10.1007/bf02310918

Cited by 7 publications

(3 citation statements)

References 6 publications

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“…Inoculation with soil-based inocula of cyanobacteria has frequently been recommended for enhancement of rice growth and performance. Chronologically, the mechanisms of this enhancement involve antagonism against aquatic macrophytes [23,24], enhancement of biological N 2 -fixation and paddy yield [17,25], reduction of sulfide injury in flooded rice fields [26], promotion of soil particle aggregation with increased soil organic matter content, permeability, water retention and water holding capacity [27], diminished epidemic injuries by fungi [28,29] and insect pests [30], increase rice protection against the "rosette long-day" disorder [31], increased rice branching and positive turnover effects on subsequent crops that follow rice in crop rotation [28,[32][33][34], contributed available P during the rice panicle initiation stage [34] and alleviation of salt stress in rice fields [35]. Several positive effects of inoculation with cyanobacteria are recorded throughout.…”

Section: Discussionmentioning

confidence: 99%

Differential Performance of Individual and Consortial Endophytes for Enhanced Rice Yield and Agronomic N-Use Efficiency in Open-Fields in the Nile Delta

Yanni¹,

Dazzo²,

Elsadany³

2019

Act Scie Micro

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Billions of tons of synthetic fertilizers are currently used to enhance legume and cereal production despite the recognition that many beneficial plant/microbe associations are environmental friendly, safe and sound alternatives. Currently, cereal production requires major N inputs to achieve global food security, although they can utilize basal levels of fixed-N from biological N 2 -fixation (BNF) by diverse diazotrophs in their agro-ecosystems. Worldwide attempts have been made to solve that challenge by integrating lab studies, greenhouse tests and translational field experiments

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Section: Discussionmentioning

confidence: 99%

Differential Performance of Individual and Consortial Endophytes for Enhanced Rice Yield and Agronomic N-Use Efficiency in Open-Fields in the Nile Delta

Yanni¹,

Dazzo²,

Elsadany³

2019

Act Scie Micro

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“…Consecutive inoculation in multiple years may be needed to increase the establishment and propagation of cyanobacteria inoculum in rice fields [ 26 ]. The microalgae biofertilizer treatments can also be possibly used in combination with synthetic N fertilizers [ 26 , 31 , 39 – 42 ]. Additional benefit of rice cultivation with cyanobacteria is to ameliorate metal toxicity in both soil and rice plants because cyanobacteria play a role in sequestering the toxic metal loads alongside the ecosystem service of N 2 fixation [ 21 , 43 ].…”

Section: Discussionmentioning

confidence: 99%

Microalgal cultivation for biofertilization in rice plants using a vertical semi-closed airlift photobioreactor

Jochum

Moncayo

2018

PLoS ONE

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Nitrogen (N) is one of the most important limiting factors in conventional rice (Oryza sativa) production, which heavily relies on synthetic fertilizers. In this study, we researched on the development and use of a vertical semi-closed airlift photobioreactor (PBR) for microalgal cultivation and subsequently determined the efficacy of microalgae-based fertilizers to rice plant growth. The PBR system was developed to produce two strains of N2-fixing cyanobacteria (Anabaena sp. UTEX 2576, Nostoc muscorum UTEX 2209S), and a polyculture of Chlorella vulgaris (UTEX 2714) and Scenedesmus dimorphus (UTEX 1237). When these biofertilizers were evaluated for rice under the greenhouse conditions, results showed that the rice plant heights treated with polyculture-based microalgal biomass were similar to or better than the urea treatment. The effects of the inoculation of the N2-fixing cyanobacterial inoculation on seedling growth was not statistically significant. In conclusion, the vertical semi-closed system PBR cultivation method developed in this study proved to be a simple and effective method for cultivating microalgae. Demonstration of the reliable production system for N2-fixing cyanobacteria and chlorophytes at a medium scale could potentially open the future application of microalgal biofertilizers in rice production.

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“…In AS-top-11 (Site 1), there was a lack of available N once the losses were accounted for. In the CM-170-12 (Site 1) treatment, plants were damaged by a very serious attack of the fungus Pyricularia oryzae, revealing excessive N fertilisation (Yanni and Sehly, 1991).…”

Section: Global Warming Potential and Greenhouse Gas Intensity Duringmentioning

confidence: 99%

Effect of fertilising with pig slurry and chicken manure on GHG emissions from Mediterranean paddies

Maris

Teira-Esmatges

Bosch‐Serra

et al. 2016

Science of The Total Environment

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Soil fertilisation affects greenhouse gas emissions. The objective of this study was to compare the effect of different fertilisation strategies on N2O, CH4 emissions and on ecosystem respiration (CO2 emissions), during different periods of rice cultivation (rice crop, postharvest period, and seedling) under Mediterranean climate. Emissions were quantified weekly by the photoacoustic technique at two sites. At Site 1 (2011 and 2012), background treatments were 2 doses of chicken manure (CM): 90 and 170kgNH4(+)-Nha(-1) (CM-90, CM-170), urea (U, 150kgNha(-1)) and no-N (control). Fifty kilogram N ha(-1) ammonium sulphate (AS) were topdress applied to all of them. At Site 2 (2012), background treatments were 2 doses of pig slurry (PS): 91 and 152kgNH4(+)-Nha(-1) (PS-91, PS-152) and ammonium sulphate (AS) at 120kgNH4(+)-Nha(-1) and no-N (control). Sixty kilogram NH4(+)-Nha(-1) as AS were topdress applied to AS and PS-91. During seedling, global warming potential (GWP) was ~3.5-17% of that of the whole rice crop for the CM treatments. The postharvest period was a net sink for CH4, and CO2 emissions only increased for the CM-170 treatment (up to 2MgCO2ha(-1)). The GWP of the entire rice crop reached 17Mg CO2-eqha(-1) for U, and was 14 for CM-170, and 37 for CM-90. The application of PS at agronomic doses (~170kgNha(-1)) allowed high yields (~7.4Mgha(-1)), the control of GWP (~6.5MgCO2-eqha(-1)), and a 13% reduction in greenhouse gas intensity (GHGI) to 0.89kgCO2-eqkg(-1) when compared to AS (1.02kgCO2-eqkg(-1)).

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Rice performance and natural infection with blast (Pyricularia oryzae Cav.) under different algalization techniques and rates of fertilizer nitrogen

Cited by 7 publications

References 6 publications

Differential Performance of Individual and Consortial Endophytes for Enhanced Rice Yield and Agronomic N-Use Efficiency in Open-Fields in the Nile Delta

Differential Performance of Individual and Consortial Endophytes for Enhanced Rice Yield and Agronomic N-Use Efficiency in Open-Fields in the Nile Delta

Microalgal cultivation for biofertilization in rice plants using a vertical semi-closed airlift photobioreactor

Effect of fertilising with pig slurry and chicken manure on GHG emissions from Mediterranean paddies

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