scholarly journals Identification and characterization of proteins, lipids, and metabolites in two organic fertilizer products derived from different nutrient sources

2021 ◽  
Vol 64 (1) ◽  
Author(s):  
Jianyu Li ◽  
Xin Zhao ◽  
Laura S. Bailey ◽  
Manasi N. Kamat ◽  
Kari B. Basso
Keyword(s):  
Biochemical Composition ◽  
Organic Fertilizer ◽  
Saturated Fatty Acids ◽  
Soil Health ◽  
Soil Microbial Communities ◽  
Organic Fertilizers ◽  
Vegetable Production ◽  
Limited Information ◽  
Nutrient Sources ◽  
Soil Microbial

AbstractThe biochemical composition of organic fertilizers largely determines their nutrient supply characteristics following soil application as well as their potential impact on soil microbial communities. Yet, limited information is available regarding the biochemical composition of organic fertilizers derived from different nutrient sources. Here, we qualitatively analyzed the presence and abundance of proteins, lipids, and metabolites in a liquid fish fertilizer (LFF) product and a type of granular organic fertilizer (GOF) commonly used in organic vegetable production, using liquid chromatography–tandem mass spectrometry (LC–MS/MS). Our results suggest that the presence and abundance of proteins, lipids, and metabolites differ greatly between GOF and LFF. The qualitative analysis shows LFF as a rich source of metabolites, while complex proteins and long-chain saturated fatty acids are dominant in GOF. The degree of biochemical composition complexity may help explain the varying impacts of different types of organic fertilizers on nutrient availability, soil health, and environmental quality.

scholarly journals Bio-organic fertilizers stimulate indigenous soil Pseudomonas populations to enhance plant disease suppression

Microbiome ◽  
2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Chengyuan Tao ◽  
Rong Li ◽  
Wu Xiong ◽  
Zongzhuan Shen ◽  
Shanshan Liu ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Plant Pathogens ◽  
Organic Fertilizer ◽  
Soil Microbial Communities ◽  
Plant Diseases ◽  
Disease Suppression ◽  
Organic Fertilizers ◽  
Soil Microbiome ◽  
Soil Microbial ◽  
Bioorganic Fertilizer

Abstract Background Plant diseases caused by fungal pathogen result in a substantial economic impact on the global food and fruit industry. Application of organic fertilizers supplemented with biocontrol microorganisms (i.e. bioorganic fertilizers) has been shown to improve resistance against plant pathogens at least in part due to impacts on the structure and function of the resident soil microbiome. However, it remains unclear whether such improvements are driven by the specific action of microbial inoculants, microbial populations naturally resident to the organic fertilizer or the physical-chemical properties of the compost substrate. The aim of this study was to seek the ecological mechanisms involved in the disease suppressive activity of bio-organic fertilizers. Results To disentangle the mechanism of bio-organic fertilizer action, we conducted an experiment tracking Fusarium wilt disease of banana and changes in soil microbial communities over three growth seasons in response to the following four treatments: bio-organic fertilizer (containing Bacillus amyloliquefaciens W19), organic fertilizer, sterilized organic fertilizer and sterilized organic fertilizer supplemented with B. amyloliquefaciens W19. We found that sterilized bioorganic fertilizer to which Bacillus was re-inoculated provided a similar degree of disease suppression as the non-sterilized bioorganic fertilizer across cropping seasons. We further observed that disease suppression in these treatments is linked to impacts on the resident soil microbial communities, specifically by leading to increases in specific Pseudomonas spp.. Observed correlations between Bacillus amendment and indigenous Pseudomonas spp. that might underlie pathogen suppression were further studied in laboratory and pot experiments. These studies revealed that specific bacterial taxa synergistically increase biofilm formation and likely acted as a plant-beneficial consortium against the pathogen. Conclusion Together we demonstrate that the action of bioorganic fertilizer is a product of the biocontrol inoculum within the organic amendment and its impact on the resident soil microbiome. This knowledge should help in the design of more efficient biofertilizers designed to promote soil function.

Bio-Organic Fertilizers Manipulate Abundance Patterns of Rhizosphere Soil Microbial Community Structure To Improve Tomato Productivity

2021 ◽  
Author(s):  
Bintao Li ◽  
Luodi Guo ◽  
Haoming Wang ◽  
Yulong Li ◽  
Hangxian Lai ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Microbial Communities ◽  
Crop Yields ◽  
Organic Fertilizer ◽  
Soil Microbial Communities ◽  
Organic Fertilizers ◽  
Soil Microbiome ◽  
Growth Stages ◽  
Soil Microbial Community Structure ◽  
Soil Microbial

Abstract Background Bio-organic fertilizers has been shown to improve crop yields, partially because of the effects on the structure and function in resident soil microbiome. Purpose and methods Whereas, it is unknown if such improvements have been facilitated by the particular action of microbial inoculants, or the compost substrate. To understand the ecological mechanisms to increase crop productivity by bio-organic fertilizers, we conducted a pot experiment tracking soil physicochemical factors and extracellular enzyme activity over two growth stages and variations of soil microbial communities caused by fertilization practices as below: Bacillus subtilis CY1 inoculation, swine compost, and bio-organic fertilizer. Results Results showed that different fertilization measures, especially bio-organic fertilizers, increased soil nutrients, enzyme activity, and the diversity of microbial communities. For quantifying the “effect size” of microbiota manipulation, we discoverd that, respectively, 19.94% and 48.99% of variation in the bacterial and fungal communities could be interpreted using tested fertilization practices. Fertilization-sensitive microbes showed taxonomy diversity and gave responses as guilds of taxa to specific treatments. The microbes exhibited medium to high degree of co-occurrence in the network and could be recruited, directly or indirectly, by B. subtilis CY1, suggesting that bio-organic fertilizer may allow manipulation of influential community members.Conclusion Together we demonstrated that the increase in tomato productivity by bio-organic fertilizer was caused by the synergistic effect of organic fertilizer and beneficial microorganisms, thus providing novel insights into the soil microbiome manipulation strategies of biologically-enhanced organic fertilizers.

scholarly journals Bio-organic fertilizers stimulate indigenous soil Pseudomonas populations to enhance plant disease suppression

2020 ◽  
Author(s):  
Chengyuan Tao ◽  
Rong Li ◽  
Wu Xiong ◽  
Zongzhuan Shen ◽  
Shanshan Liu ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Organic Fertilizer ◽  
Soil Microbial Communities ◽  
Plant Diseases ◽  
Disease Suppression ◽  
Organic Fertilizers ◽  
Soil Microbiome ◽  
Pseudomonas Spp ◽  
Soil Microbial ◽  
Bioorganic Fertilizer

Abstract Background: Plant diseases caused by fungal pathogen result in a substantial economic impact on the global food and fruit industry. Application of organic fertilizers supplemented with biocontrol microorganisms (i.e. bioorganic fertilizers) has been shown to improve resistance against plant pathogens at least in part due to impacts on the structure and function of the resident soil microbiome. However, it remains unclear whether such improvements are driven by the specific action of microbial inoculants, microbial populations naturally resident to the organic fertilizer or the physical-chemical properties of the compost substrate. The aim of this study was to seek the ecological mechanisms involved in the disease suppressive activity of bio-organic fertilizers.Results: To disentangle the mechanism of bio-organic fertilizer action, we conducted an experiment tracking Fusarium wilt disease of banana and changes in soil microbial communities over three growth seasons in response to the following four treatments: bio-organic fertilizer (containing Bacillus amyloliquefaciens W19), organic fertilizer, sterilized organic fertilizer and sterilized organic fertilizer supplemented with B. amyloliquefaciens W19. We found that sterilized bioorganic fertilizer to which Bacillus was re-inoculated provided a similar degree of disease suppression as the non-sterilized bioorganic fertilizer. We further observed that disease suppression in these treatments could be linked to impacts on the resident soil microbial communities, with noted increases in specific Pseudomonas spp.. The link between Bacillus amendment and indigenous Pseudomonas spp. was further examined using pot experiments and biofilm assays. Conclusion: Together we demonstrate that the action of bioorganic fertilizer is a product of the biocontrol inoculum within the organic amendment and its impact on the resident soil microbiome. This knowledge should help in the design of more efficient biofertilizers designed to promote soil function.

scholarly journals Bio-organic fertilizers stimulate indigenous soil Pseudomonas populations to enhance plant disease suppression

2020 ◽  
Author(s):  
Chengyuan Tao ◽  
Rong Li ◽  
Wu Xiong ◽  
Zongzhuan Shen ◽  
Shanshan Liu ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Organic Fertilizer ◽  
Soil Microbial Communities ◽  
Plant Diseases ◽  
Disease Suppression ◽  
Organic Fertilizers ◽  
Soil Microbiome ◽  
Pseudomonas Spp ◽  
Soil Microbial ◽  
Bioorganic Fertilizer

Abstract Background: Plant diseases caused by fungal pathogen result in a substantial economic impact on the global food and fruit industry. Application of organic fertilizers supplemented with biocontrol microorganisms ( i.e. bioorganic fertilizers) has been shown to improve resistance against plant pathogens at least in part due to impacts on the structure and function of the resident soil microbiome. However, it remains unclear whether such improvements are driven by the specific action of microbial inoculants, microbial populations naturally resident to the organic fertilizer or the physical-chemical properties of the compost substrate. The aim of this study was to seek the ecological mechanisms involved in the disease suppressive activity of bio-organic fertilizers. Results: To disentangle the mechanism of bio-organic fertilizer action, we conducted an experiment tracking Fusarium wilt disease of banana and changes in soil microbial communities over three growth seasons in response to the following four treatments: bio-organic fertilizer (containing Bacillus amyloliquefaciens W19), organic fertilizer, sterilized organic fertilizer and sterilized organic fertilizer supplemented with B. amyloliquefaciens W19. We found that sterilized bioorganic fertilizer to which Bacillus was re-inoculated provided a similar degree of disease suppression as the non-sterilized bioorganic fertilizer across cropping seasons. We further observed that disease suppression in these treatments is linked to impacts on the resident soil microbial communities, specifically by leading to increases in specific Pseudomonas spp.. Observed correlations between Bacillus amendment and indigenous Pseudomonas spp. that might underlie pathogen suppression were further studied in laboratory and pot experiments. These studies revealed that specific bacterial taxa synergistically increase biofilm formation and likely acted as a plant-beneficial consortium against the pathogen. Conclusion: Together we demonstrate that the action of bioorganic fertilizer is a product of the biocontrol inoculum within the organic amendment and its impact on the resident soil microbiome. This knowledge should help in the design of more efficient biofertilizers designed to promote soil function.

Soil bacterial communities interact with silicon fraction transformation and promote rice yield after long-term straw return

2021 ◽  
Author(s):  
Alin Song ◽  
Zimin Li ◽  
Fenliang Fan
Keyword(s):  
Microbial Community ◽  
Rice Yield ◽  
Soil Microbial Communities ◽  
Nutrient Sources ◽  
Soil Microbial ◽  
Mn Oxide ◽  
Straw Return ◽  
Soil Bacterial ◽  
Healthy Growth

<p>Returning crop straw into soil is an important practice to balance biogenic and bioavailable silicon (Si) pool in paddy, which is crucial for rice healthy growth. However, it remains elusive how straw return affects Si bioavailability, its uptake, and rice yield, owing to little knowledge about soil microbial communities responsible for straw degradation. Here, we investigated the change of soil Si fractions and microbial community in a 39-year-old paddy field amended by a long-term straw return. Results showed that rice straw-return significantly increased soil bioavailable Si and rice yield to from 29.9% to 61.6% and from 14.5% to 23.6%, respectively, compared to NPK fertilization alone. Straw return significantly altered soil microbial community abundance. Acidobacteria was positively and significantly related to amorphous Si, while Rokubacteria at the phylum level, Deltaproteobacteria and Holophagae at the class level were negatively and significantly related to organic matter adsorbed and Fe/Mn-oxide combined Si in soils. Redundancy analysis of their correlations further demonstrated that Si status significantly explained 12% of soil bacterial community variation. These findings suggest that soil bacteria community and diversity interact with Si mobility via altering its transformation, resulting in the balance of various nutrient sources to drive biological silicon cycle in agroecosystem.</p>

scholarly journals Soil Microbial Activity and Diversity in Response to Soil Chemical Factors in Agricultural Soils

2019 ◽  
Vol 24 (1) ◽  
pp. 43
Author(s):  
Lily Ishak ◽  
Philip Hugh Brown
Keyword(s):  
Microbial Communities ◽  
Agricultural Soils ◽  
Soil Health ◽  
Soil Microbial Communities ◽  
Soil Microbial Activity ◽  
Soil Microbial Diversity ◽  
Soil Microbial ◽  
Microbial Responses ◽  
Chemical Factors ◽  
Microbial Groups

The role of microbial communities in maintaining soil health is mostly influenced by chemical condition of soil. Microbial communities vary in response to soil chemical factors. The contradictive results from previous findings emphasise that it is difficult to define a pattern of the influence of soil chemical factors on soil microbial diversity and activity. The aim of the study was to assess soil microbial responses to soil chemical factors in agricultural soils. Composite soil (Dermosol order) samples taken from 16 commercial crop sites in Bundaberg, Queensland, Australia, were chemically and biologically analysed. It was found that bacterial and fungal activity and diversity were significantly affected by soil EC, SOM and NO3-N content, but were not influenced by soil pH, CEC, and Ca:Mg ratio. The diversity of bacterial and fungal communities displayed a positive linear relationship with soil EC, whereas the activity and diversity of these two microbial groups and SOM displayed a significant quadratic relationship. The finding suggested that microbial community was predominantly influenced by SOM content.

scholarly journals Extreme drought triggers transition to an alternative soil microbial state

2021 ◽  
Author(s):  
Irene Cordero ◽  
Ainara Leizeaga ◽  
Lettice C Hicks ◽  
Johannes Rousk ◽  
Richard D Bardgett
Keyword(s):  
Microbial Communities ◽  
Bacterial Communities ◽  
Soil Health ◽  
Soil Microbial Communities ◽  
Climate Extremes ◽  
Extreme Drought ◽  
Alternative States ◽  
Soil Microbial ◽  
Fungal Community Structure ◽  
Functional States

Soil microbial communities play a pivotal role in regulating ecosystem functioning but they are increasingly threatened by human-driven perturbations, including climate extremes, which are predicted to increase in frequency and intensity with climate change. It has been demonstrated that soil microbial communities are sensitive to climate extremes, such as drought, and that effects can be long-lasting. However, considerable uncertainties remain concerning the response of soil microbial communities to increases in the intensity and frequency of climate extremes, and their potential to trigger transitions to alternative, and potentially deleterious, taxonomic and functional states. Here we demonstrate that extreme, frequent drought induces a shift to an alternative soil microbial state characterised by strongly altered bacterial and fungal community structure of reduced complexity and functionality. Moreover, we found that this drought-induced alternative microbial state persisted after returning soil to its previous moisture status. However, bacterial communities were able to adapt by increasing their growth capacity, despite being of reduced diversity. Abrupt transitions to alternative states are well documented in aquatic and terrestrial plant communities in response to human-induced perturbations, including climate extremes. Our results provide experimental evidence that such transitions also occur in soil microbial communities in response to extreme drought with potentially deleterious consequences for soil health.

scholarly journals Government intervention on organic fertilizer promotion: a key to enhancing soil health and environment

2018 ◽  
Vol 18 ◽  
pp. 131-139
Author(s):  
Sujan Amgai ◽  
Santosh Raj Paudel ◽  
Diwas Raj Bista ◽  
Salik Ram Poudel
Keyword(s):  
Plant Protection ◽  
Local Level ◽  
Organic Fertilizer ◽  
Soil Health ◽  
Nutrient Content ◽  
Organic Manure ◽  
Green Economy ◽  
Organic Fertilizers ◽  
Protection Measures ◽  
Long Run

Unilateral use of chemical fertilizers, devoid of organic sources, has led to gradual deterioration of soil health, exacerbating the agricultural productivity. This study focuses on the review the performance, effectiveness and modality of organic manure promotion programmes intervened by MoAD, using secondary datas. Major programmes intervened are: Vermi-compost production, cattle shed improvement, organic fertilizer industries establishment and price subsidy to farmers purchasing organic fertilizers. Study shows that these programs are effective to reduce soil health deterioration by making nutrient rich manure available at local level. Moreover, it has helped to reduce dependency of fertilizers on other countries and to promote sustainable agriculture. Altogether 1495 vermi-compost pits were constructed and 33746 cattle sheds were improved all over the country till FY 2072/73. Converting farm and household organic wastes into organic manure, improvement of the nutrient content of FYM, utilization of cattle urine for plant protection measures were the benefits of these programs. Furthermore, in long run it helps to create green economy by reducing pollution by keeping environment safe and clean.

scholarly journals Peningkatan Kualitas Biourin Sapi dengan Penambahan Pupuk Hayati dan Molase serta Pengaruhnya terhadap Pertumbuhan dan Produktivitas Pakchoy

2017 ◽  
Vol 8 (3) ◽  
pp. 183
Author(s):  
Yulia Nuraini ◽  
Rurin Eka Asgianingrum
Keyword(s):  
Organic Fertilizer ◽  
Soil Health ◽  
Crop Productivity ◽  
Organic Fertilizers ◽  
Fresh Weight ◽  
Kaempferia Galanga ◽  
Randomized Design ◽  
Cow Urine ◽  
Number Of Leaves ◽  
Completely Randomized Design

<p align="center"><strong><em>ABSTRACT <br /></em></strong></p><p><em>The use of inorganic fertilizers to increase crop productivity can be suppressed by switching it to organic fertilizers. The abundance of cow urine waste can be used as organic fertilizer and to be used as biourine. This study was aimed at </em><em>determining </em><em>the effect of biofertilizers and molasses toward biourine quality and its effect on productivity of pakchoy. This research was conducted in UPT Compost Brawijaya University, and glasshouses in Sukapura Village, Probolinggo in August to November 2016. This research consisted of two steps. First production of biourine with the addition of organic material such as molasses, biofertilizers, and empon-empon namely turmeric, galangal, and Kaempferia galanga, which consists of 12 treatments with 3 replications arranged in a completely randomized design, and application of biourine on pakchoy consisting of 6 treatments (control, doses of 200, 300, 400, 500, and 600 ml L<sup>-1</sup>) with three replications. The results of first step showed E1 treatment (10 L biourine + 30 ml + 750 ml molasses) can improve N-total 860%, organic matter 282%, and </em><em>population of microbe 1229%</em><em>. The best biourine in first research (E1 treatment) was applied with dose 600 ml L<sup>-1</sup> showed the best result. It showed to increase the number of leaves as much as 48% and the fresh weight of pakchoy by 405% when compared to no biourine treatment.</em><em></em></p><p><em>Keywords: biofertilizer, inceptisols, soil health, and population of microbe</em></p><p><em> </em></p><p align="center"><strong>ABSTRAK <br /></strong></p><p>Penggunaan pupuk anorganik untuk meningkatkan produktivitas tanaman dapat ditekan dengan beralih menggunakan pupuk organik. Melimpahnya limbah urin sapi dapat dimanfaatkan sebagai pupuk organik dengan dijadikan biourin. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan pupuk hayati dan molase terhadap kualitas biourin dan pengaruhnya terhadap produktivitas pakchoy. Penelitian dilakukan di UPT Kompos Universitas Brawijaya, dan rumah kaca di Desa Sukapura, Probolinggo pada bulan Agustus sampai Nopember 2016. Penelitian dilakukan dalam 2 tahap, pertama pembuatan biourin dengan penambahan bahan organik berupa molase, pupuk hayati, dan empon-empon (kunyit, lengkuas, dan kencur) yang terdiri dari 12 taraf perlakuan dengan 3 ulangan pada Rancangan Acak Lengkap, dan kedua pengaplikasian biourin pada tanaman pakchoy yang terdiri dari 6 taraf perlakuan (kontrol, dosis 200, 300, 400, 500, dan 600 ml L<sup>-1</sup>) dengan 3 kali ulangan. Hasil penelitian tahap pertama menujukkan perlakuan E1 (10 L urin + 30ml pupuk hayati + 750ml molase) mampu meningkatkan N-total 860%, bahan organik 282%, dan populasi mikroba sebesar 1229%. Aplikasi biourin terbaik pada penelitian tahap 1 (perlakuan E1) dengan dosis 600 ml L<sup>-1</sup> pada tanaman pakchoy menunjukkan hasil terbaik, ditunjukkan dengan meningkatnya jumlah daun sebanyak 48% dan bobot basah tanaman sebesar 405% jika dibandingkan tanpa pemberian biourin.</p><p>Kata kunci: inceptisol, kesuburan tanah, mikroba, dan pupuk organik cair</p>

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