551 results match your criteria unfertilized control


On the sustainability of land applications of sewage sludge: How to apply the sewage biosolid in order to improve soil fertility and increase crop yield?

Chemosphere 2021 Jun 7;282:131122. Epub 2021 Jun 7.

Department of Nature and Life Sciences, Faculty of Exact Sciences and Nature and Life Sciences, University of Tebessa, Tebessa, 12002, Algeria; Laboratory of Natural Resources and Management of Sensitive Environments 'RNAMS', University of Oum-El-Bouaghi, Oum-El-Bouaghi, 04000, Algeria. Electronic address:

The fertilization using sewage sludge (SS) and/or SS-derived products have been extensively studied and known to increase crop yield as soil nutrients and plant growth are improved. This study aimed to evaluate two SS application methods (i.e. Read More

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60 years of fertilization and liming impacts on soil organic carbon stabilization in a sub-tropical Alfisol.

Environ Sci Pollut Res Int 2021 Apr 21. Epub 2021 Apr 21.

Environmental Sciences and Biomedical Metrology Division, CSIR-National Physical Laboratory, New Delhi, 110012, India.

Limited information is available on the C stabilization mechanism of tropical soils under different management practices including long-term organic manuring, mineral fertilization alone, or in combination with lime. Hence, to understand the effect of continuous application (for 60 years) of organic manure, fertilizer, and lime alone or in combination on an acidic Alfisol, stabilization of soil organic carbon (SOC) was evaluated under maize (Zea mays L.) wheat (Triticum aestivum L. Read More

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Residual effects of four-year amendments of organic material on NO production driven by ammonia-oxidizing archaea and bacteria in a tropical vegetable soil.

Sci Total Environ 2021 Aug 26;781:146746. Epub 2021 Mar 26.

Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571737, China; National Agricultural Experimental Station for Agricultural Environment, Danzhou 571737, China; College of Ecology and Environment, Hainan University, Haikou 570228, China. Electronic address:

Organic material (OM) applied to cropland not only enhances soil fertility but also profoundly affects soil nitrogen cycling. However, little is known about the relative contributions of soil ammonia-oxidizing archaea (AOA) and bacteria (AOB) to nitrous oxide (NO) production during ammonia oxidation in response to the additions of diverse types of OMs in the tropical soil for vegetable production. Herein, the soils were sampled from a tropical vegetable field subjected to 4-year consecutive amendments of straw or manure. Read More

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Combining P and Zn fertilization to enhance yield and grain quality in maize grown on Mediterranean soils.

Sci Rep 2021 Apr 1;11(1):7427. Epub 2021 Apr 1.

Department of Agronomy, University of Córdoba, Campus de Rabanales, Building, 14071, Córdoba, Spain.

The main aim of this study was to elucidate the effect of individual and joint fertilization with P and Zn on maize plants grown on typical Mediterranean soils with a limited Zn availability. For this purpose, we examined the effects of P and Zn fertilization individually and in combination on growth, yield and grain protein content in maize grown in pots filled with three different Mediterranean soils (LCV, FER and INM). Phosphorus and Zn translocation to grain was impaired, and aboveground dry matter and yield at harvest reduced by 8-85% (LCV and FER), in plants treated with Zn or P alone relative to unfertilized (control) plants. Read More

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New Functions of HG2011: Mobilization of Soil Nitrogen and Phosphorus and Enhancement of Yield and Quality of Ketchup-Processing Tomato.

J Agric Food Chem 2021 Apr 31;69(14):4056-4063. Epub 2021 Mar 31.

College of Resources and Environment, Southwest University, Chongqing 400716, China.

The overuse of chemical nitrogen (N) and phosphorus (P) fertilizers in tomato cultivation is common for high fruit yields to meet the ever-increasing industrial needs, resulting in poor fruit quality, fertilizer waste, and environmental pollution. Nutrient-mobilizing microbes increase soil nutrient supply and decrease fertilizer use without yield sacrifices. Thus, the influence of a new white-rot fungus HG2011 was studied on soil N and P mobilization in lab and ketchup tomato performances in field. Read More

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PbEIL1 acts upstream of PbCysp1 to regulate ovule senescence in seedless pear.

Hortic Res 2021 Mar 10;8(1):59. Epub 2021 Mar 10.

College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province, China.

Numerous environmental and endogenous signals control the highly orchestrated and intricate process of plant senescence. Ethylene, a well-known inducer of senescence, has long been considered a key endogenous regulator of leaf and flower senescence, but the molecular mechanism of ethylene-induced ovule senescence has not yet been elucidated. In this study, we found that blockage of fertilization caused ovule abortion in the pear cultivar '1913'. Read More

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Monitoring of Unhatched Eggs in Hermann's Tortoise () after Artificial Incubation and Possible Improvements in Hatching.

Animals (Basel) 2021 Feb 11;11(2). Epub 2021 Feb 11.

Institute for Poultry, Birds, Small Animals and Reptiles, Veterinary Faculty, University of Ljubljana, Gerbičeva 60, 1000 Ljubljana, Slovenia.

The causes of embryonic mortality in Hermann's tortoises () during artificial incubation were determined. Total egg failure at the end of the hatching period was investigated. The hatching artefacts represented 19. Read More

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February 2021

Could forage peanut in low proportion replace N fertilizer in livestock systems?

PLoS One 2021 3;16(3):e0247931. Epub 2021 Mar 3.

Department of Animal Science, São Paulo State University, Jaboticabal, SP, Brazil.

Palisadegrass [Urochloa brizantha (Hochst. ex A. Rich. Read More

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Assessing the viability of recovered phosphorus from eutrophicated aquatic ecosystems as a liquid fertilizer.

J Environ Manage 2021 May 18;285:112156. Epub 2021 Feb 18.

Departamento de Ecología, Facultad de Ciencias, Universidad de Granada, 18071, Granada, Spain; Instituto del Agua, Universidad de Granada, 18071, Granada, Spain. Electronic address:

One of the most important worldwide environmental challenges is the alteration of the biogeochemical cycle of phosphorus (P). P is globally exported from terrestrial to aquatic ecosystems, causing the eutrophication of the receiving waters. In this context, magnetic microparticles (MPs) have been recently proposed for trapping P in natural eutrophicated ecosystems, as well as in treated wastewaters. Read More

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Long-Term Fertilization Shapes the Putative Electrotrophic Microbial Community in Paddy Soils Revealed by Microbial Electrosynthesis Systems.

Environ Sci Technol 2021 03 18;55(5):3430-3441. Epub 2021 Feb 18.

State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Shuangqing Road, No. 18, Haidian District, Beijing 100085, China.

Electrotrophs play an important role in biogeochemical cycles, but the effects of long-term fertilization on electrotrophic communities in paddy soils remain unclear. Here, we explored the responses of electrotrophic communities in paddy soil-based microcosms to different long-term fertilization practices using microbial electrosynthesis systems (MESs), high-throughput quantitative PCR, and 16s rRNA gene-based Illumina sequencing techniques. Compared to the case in the unfertilized soil (CK), applications of only manure (M); only chemical nitrogen, phosphorous, and potassium fertilizers (NPK); and M plus NPK (MNPK) clearly changed the electrotrophic bacterial community structure. Read More

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Impacts of long-term inorganic and organic fertilization on phosphorus adsorption and desorption characteristics in red paddies in southern China.

PLoS One 2021 29;16(1):e0246428. Epub 2021 Jan 29.

Guangdong Provincial Key Laboratory for Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China.

Soil phosphorus (P) adsorption and desorption occur in an important endogenous cycle linked with soil fertility problems and relevant to the environmental risk assessment of P. In our study, the effect of long-term inorganic and organic fertilization on P adsorption and desorption characteristics in relation to changes in soil properties was evaluated by selecting three long-term experimental sites in southern China. The selected treatments at each site were CK (unfertilized), NPK (synthetic nitrogen, phosphorus and potassium) and NPKM (synthetic NPK plus manure). Read More

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Global greenhouse vegetable production systems are hotspots of soil NO emissions and nitrogen leaching: A meta-analysis.

Environ Pollut 2021 Mar 30;272:116372. Epub 2020 Dec 30.

Institute of Meteorology and Climate Research, Atmospheric Environmental Research (IMK-IFU), Karlsruhe Institute of Technology, Garmisch-Partenkirchen, 82467, Germany; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, PR China. Electronic address:

Vegetable production in greenhouses is often associated with the use of excessive amounts of nitrogen (N) fertilizers, low NUE (15-35%), and high N losses along gaseous and hydrological pathways. In this meta-analysis, we assess the effects of application rate, fertilizer type, irrigation, and soil properties on soil NO emissions and nitrogen leaching from greenhouse vegetable systems on the basis of 75 studies. Mean ± standard error (SE) NO emissions from unfertilized control plots (NO) and N leaching (NL) of greenhouse vegetable systems were 3. Read More

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[Effects of different fertilization managements on microbial necromass and plant lignin accumulation in a Mollisol].

Ying Yong Sheng Tai Xue Bao 2020 Sep;31(9):3060-3066

Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.

Fertilization is an effective management to maintain and increase soil organic carbon (SOC) level in agroecosystems. Both microbial metabolism and plant component retention control SOC sequestration. Here, we used amino sugars and lignin as biomarkers to investigate the responses of distribution of microbial necromass and plant debris in a long-term cultivated soil (30 years) and SOC accumulation to different fertilization regime. Read More

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September 2020

Simultaneous quantitation of cytokinin bases and their glycoconjugates with stable isotope labelling ultrahigh performance liquid chromatography mass spectrometry.

J Chromatogr A 2021 Jan 3;1636:461782. Epub 2020 Dec 3.

School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, PR China; Gansu Institute for Drug Control, Lanzhou, PR China; College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, PR China. Electronic address:

Cytokinins (CKs) are one class of important phytohormones widely investigated in most aspects of plant life. Similar to other phytohormones, CKs and their glycoconjugates are hydrophilic. Their ionization efficiencies for mass spectrometry (MS) detection are rather poor, whereas their retention and separation on reverse phase liquid chromatography (RPLC) are often unsatisfying. Read More

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January 2021

Case Study upon Foliar Application of Biofertilizers Affecting Microbial Biomass and Enzyme Activity in Soil and Yield Related Properties of Maize and Wheat Grains.

Biology (Basel) 2020 Dec 8;9(12). Epub 2020 Dec 8.

Institute of Soil Science, Teodora Drajzera 7, 11000 Belgrade, Serbia.

This study evaluated the effects of the application of microbial inoculants (N-fixing and spp.), two rates of composite mineral fertilizers, and their combination on microbial biomass carbon (MBC), dehydrogenase (DHA), and proteinase activity (PTA) in Lessivated Cambisol and yield-related properties of maize and wheat grains in a two-year trial. Unfertilized soil was used as a control variant. Read More

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December 2020

The food nitrogen footprint for African countries under fertilized and unfertilized farms.

J Environ Manage 2021 Feb 11;279:111599. Epub 2020 Nov 11.

School of Geography, Nanjing Normal University, Nanjing 210023, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China; Key Laboratory of Virtual Geographic Environment (Nanjing Normal University), Ministry of Education, Nanjing 210023, China. Electronic address:

Although nitrogen (N) is a limiting factor for food production (FP) in Africa, and African food security is seriously threatened by the phenomenon of soil N depletion, there is a dearth of information that shows the points to focus on throughout the chain of FP and food consumption (FC) in all African countries to minimize N loss while securing food N supply. Food N footprint (NF) is an indicator for tracing the losses of reactive N (Nr) with regard to the FP and FC chain. This is the first study to calculate the food NF for all African countries under fertilized and unfertilized farms, by calculating two sets of virtual N factors (VNFs; kg Nr released to the environment kg N in consumed product): one for unfertilized farms (the unfertilized scenario) and one for fertilized farms (the fertilized scenario). Read More

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February 2021

Nutrients Leaching in Response to Long-Term Fertigation and Broadcast Nitrogen in Blueberry Production.

Plants (Basel) 2020 Nov 10;9(11). Epub 2020 Nov 10.

Centre de Recherche et d'Innovation sur les Végétaux (CRIV), Département de Phytologie, Faculté des Sciences de l'Agriculture et de l'Alimentation, Université Laval, Québec (Québec), G1V 0A6, Canada.

Nutrient leaching losses from horticultural production threaten the quality of groundwater and freshwater systems worldwide. The objectives of this study were to (a) assess the effects of annual applications of ammonium sulfate fertilizer through fertigation (FERT) and broadcast (BROAD) on nutrient leaching losses and (b) determine the links among chemical property changes in leachates and soil with berry yields after 9 and 11 years of blueberry production. The long-term blueberry site was established in 2008 using seven combinations of treatments including an unfertilized control (CONT) and three N fertilizer rates (100%, 150%, 200% of recommended rates) using BROAD and FERT methods. Read More

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November 2020

Soil fungal diversity and biological activity as indicators of fertilization strategies in a forest ecosystem after spruce disintegration in the Karpaty Mountains.

Sci Total Environ 2021 Jan 10;751:142335. Epub 2020 Sep 10.

Department of Ecology and Silviculture, Faculty of Forestry, University of Agriculture, Al. 29 Listopada 46, Krakow, Poland.

Forest soils are being exposed to nutrient deficiency and acidification at increasing rates as a result of intensive management. Mineral fertilization, however, provides a way to improve soil nutrient balance. The aim of this study is to present the effects of mineral fertilization on the properties of forest soil 11 years after fertilization. Read More

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January 2021

Optimum rates of surface-applied coal char decreased soil ammonia volatilization loss.

J Environ Qual 2020 Mar 16;49(2):256-267. Epub 2020 Mar 16.

Dep. of Agronomy and Horticulture, Univ. of Nebraska-Lincoln, Lincoln, NE, 68588, USA.

Fertilizer N losses from agricultural systems have economic and environmental implications. Soil amendment with high C materials, such as coal char, may mitigate N losses. Char, a coal combustion residue, obtained from a sugar factory in Scottsbluff, NE, contained 29% C by weight. Read More

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Mean annual temperature influences local fine root proliferation and arbuscular mycorrhizal colonization in a tropical wet forest.

Ecol Evol 2020 Sep 28;10(18):9635-9646. Epub 2020 Aug 28.

Department of Natural Resources Cornell University Ithaca New York USA.

Mean annual temperature (MAT) is an influential climate factor affecting the bioavailability of growth-limiting nutrients nitrogen (N) and phosphorus (P). In tropical montane wet forests, warmer MAT drives higher N bioavailability, while patterns of P availability are inconsistent across MAT. Two important nutrient acquisition strategies, fine root proliferation into bulk soil and root association with arbuscular mycorrhizal fungi, are dependent on C availability to the plant via primary production. Read More

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September 2020

Soil Organic Matter Degradation in Long-Term Maize Cultivation and Insufficient Organic Fertilization.

Plants (Basel) 2020 Sep 17;9(9). Epub 2020 Sep 17.

Department of Agro-Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, 165 00 Prague, Czech Republic.

Soil organic matter carbon (C) compounds degradation was observed in long-term field experiments with silage maize monoculture. Over a period of 26 years, the content of carbon in topsoil decreased by 22% in control unfertilized plots compared to 25% and 26% in treatments fertilized annually with mineral nitrogen. With annual wheat straw application (together with mineral N), the content of C decreased by 8%. Read More

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September 2020

Microbial Communities in Soils and Endosphere of L. and their Response to Long-Term Fertilization.

Microorganisms 2020 Sep 8;8(9). Epub 2020 Sep 8.

Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Technicka 3, 166 28 Prague 6, Czech Republic.

An understanding of how fertilization influences endophytes is crucial for sustainable agriculture, since the manipulation of the plant microbiome could affect plant fitness and productivity. This study was focused on the response of microbial communities in the soil and tubers to the regular application of manure (MF; 330 kg N/ha), sewage sludge (SF; 330 and SF3x; 990 kg N/ha), and chemical fertilizer (NPK; 330-90-300 kg N-P-K/ha). Unfertilized soil was used as a control (CF), and the experiment was set up at two distinct sites. Read More

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September 2020

Fourteen years of compost application in a commercial nectarine orchard: effect on microelements and potential harmful elements in soil and plants.

Sci Total Environ 2021 Jan 23;752:141894. Epub 2020 Aug 23.

Department of Agricultural and Food Sciences, University of Bologna, viale Fanin, 46 40127 Bologna, Italy.

The objective of this experiment was to valuate, after 14 years, the impact of annual compost applications on micronutrient and potentially toxic trace elements on nectarine tree uptake and soil fertility. The study was performed in the Po valley, Italy, on the variety Stark RedGold (grafted on GF677). Since orchard planting, the following treatments were applied, in a randomized complete block design, with four replicates: 1. Read More

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January 2021

Response of Soil Bacterial Community Diversity and Composition to Time, Fertilization, and Plant Species in a Sub-Boreal Climate.

Front Microbiol 2020 5;11:1780. Epub 2020 Aug 5.

Ecosystems and Environment Research Programme, University of Helsinki, Helsinki, Finland.

Pastures are an important part of crop and food systems in cold climates. Understanding how fertilization and plant species affect soil bacterial community diversity and composition is the key for understanding the role of soil bacteria in sustainable agriculture. To study the response of soil bacteria to different fertilization and cropping managements, a 3-year (2013-2015) field study was established. Read More

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Enhanced efficiency nitrogen fertilizers were not effective in reducing NO emissions from a drip-irrigated cotton field in arid region of Northwestern China.

Sci Total Environ 2020 Dec 5;748:141543. Epub 2020 Aug 5.

State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; Xinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Cele 848300, China; University of Chinese Academy of Sciences, Beijing 100049, China; Cele National Station of Observation and Research for Desert-Grassland Ecosystem, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Cele 848300, China.

Drip irrigation is an effective water-saving strategy for crop production in arid regions. However, limited information is available on how fertilizer nitrogen (N) management affects soil nitrous oxide (NO) emission under drip irrigation. A two-year (2017-2018) field experiment was conducted in arid northwestern China to test management options of fertilizer N to reduce NO emission and improve NUE of cotton (Gossypium hirsutum L. Read More

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December 2020

The antioxidant icariin protects porcine oocytes from age-related damage in vitro.

Anim Biosci 2021 Apr 12;34(4):546-557. Epub 2020 May 12.

Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243, Korea.

Objective: If fertilization does not occur within a specific period, the quality of unfertilized oocytes in the oviduct (in vivo aging) or in culture (in vitro aging) will deteriorate over time. Icariin (ICA), found in all species of Epimedium herbs, has strong antioxidant activity, and is thought to exert anti-aging effects in vitro. We asked whether ICA protects oocytes against age-related changes in vitro. Read More

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Nitrogen fertilizer decreases survival and reproduction of female locusts by increasing plant protein to carbohydrate ratio.

J Anim Ecol 2020 10 2;89(10):2214-2221. Epub 2020 Aug 2.

School of Sustainability, Arizona State University, Tempe, AZ, USA.

Nitrogen limitation theory predicts that terrestrial plants should benefit from nitrogen inputs and that herbivores should benefit from subsequent higher plant protein contents. While this pattern has generally been supported, some herbivorous insects have shown preference and higher performance on low protein (p), high carbohydrate (c) diets as juveniles. However, little is known about the effects on reproduction in adults. Read More

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October 2020

Soil aggregation and soil aggregate stability regulate organic carbon and nitrogen storage in a red soil of southern China.

J Environ Manage 2020 Sep 15;270:110894. Epub 2020 Jun 15.

Dept. Soil Sci. and Agric. Chem., Eng. Polytech. School, Campus univ. 27002 Lugo, Univ. Santiago de Compostela, Spain.

Soil aggregation plays a critical role in the maintenance of soil structure, as well as in its productivity. Fertilization influences soil aggregation, especially by regulating soil organic carbon (SOC) and total nitrogen (TN) contents in aggregate fractions. The present study evaluated the influence of three contrasting fertilizer regimes (unfertilized control -CK-, mineral fertilization -NPK- and manure combined with NPK -NPKM) on soil aggregate stability, aggregate-associated organic carbon and total nitrogen sequestration and mineralization of SOC. Read More

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September 2020

The E2 Marie Kondo and the CTLH E3 ligase clear deposited RNA binding proteins during the maternal-to-zygotic transition.

Elife 2020 06 23;9. Epub 2020 Jun 23.

University of Colorado School of Medicine, Aurora, United States.

The maternal-to-zygotic transition (MZT) is a conserved step in animal development, where control is passed from the maternal to the zygotic genome. Although the MZT is typically considered from its impact on the transcriptome, we previously found that three maternally deposited RNA-binding proteins (ME31B, Trailer Hitch [TRAL], and Cup) are also cleared during the MZT by unknown mechanisms. Here, we show that these proteins are degraded by the ubiquitin-proteasome system. Read More

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