PubAg

Main content area

You searched for: Subject "nutrients" Remove constraint Subject: "nutrients"
Start Over

Search

77,288  Search Results

« Previous | 1 - 20 of 77,288 |
Number of results to display per page

Search Results

1. Choosing a front-of-package warning label for Brazil: A randomized, controlled comparison of three different label designs

Author:
Khandpur, Neha; Mais, Laís Amaral; de Morais Sato, Priscila; Martins, Ana Paula Bortoletto; Spinillo, Carla Galvão; Rojas, Carlos Felipe Urquizar; Garcia, Mariana Tarricone; Jaime, Patrícia Constante
Source:
Food research international 2019 v.121 pp. 854-861
ISSN:
0963-9969
Subject:
nutrient content; nutrients,   etc   ; ingredients; nutrition labeling; Brazil; Chile;     Show all 6 Subjects
Abstract:
... Warning labels (WLs) are the newest paradigm of nutrient-based, front-of-package labels (FOP) that have been consistently shown to be more effective at informing consumer purchases than other FOP labels. Their effectiveness may be attributed to their design and the consistency in the information they communicate. The present study assessed designs effects of WLs in improving understanding and perc ...
DOI:
10.1016/j.foodres.2019.01.008

2. Defining ecological status of phytobenthos in very large rivers: a case study in practical implementation of the Water Framework Directive in Romania

Author:
Kelly, M. G.; Chiriac, G.; Soare-Minea, A.; Hamchevici, C.; Birk, S.
Source:
Hydrobiologia 2019 v.828 no.1 pp. 353-367
ISSN:
0018-8158
Subject:
nutrient content; nutrients,   etc   ; case studies; data collection; rivers; Romania;     Show all 6 Subjects
Abstract:
... Establishing ecological assessment schemes is challenging when gradients are short and there are no sites with minimal anthropogenic alteration against which metrics can be calibrated. This is the situation for large rivers in Romania and this paper describes efforts to establish meaningful ecological status concepts. The intercalibration exercise, conducted as part of Water Framework Directive (W ...
DOI:
10.1007/s10750-018-3824-4

3. Correction to: Discordance between diet analysis and dietary macronutrient content in four nominally herbivorous fishes from the Southwestern Atlantic

Author:
Mendes, Thiago C.; Ferreira, Carlos Eduardo L.; Clements, Kendall D.
Source:
Marine biology 2019 v.166 no.1 pp. 2
ISSN:
0025-3162
Subject:
nutrient uptake; nutrients,   etc   ; diet; herbivorous fish; Atlantic Ocean;     Show all 5 Subjects
Abstract:
... The authors would like to correct the error in the publication of the original article. The corrected details are given below for your reading. ...
DOI:
10.1007/s00227-018-3448-2

4. Zinc Application Enhances Biological Yield and Alters Nutrient Uptake by Cotton (Gossypium hirsutum L.)

Author:
Ahmed, Niaz; Abid, Muhammad; Ali, Muhammad Arif; Masood, Sajid; Rashid, Abdul; Noreen, Sibgha; Hussain, Shahid
Source:
Communications in soil science and plant analysis 2019 v.50 no.3 pp. 265-274
ISSN:
1532-2416
Subject:
nutrient content; nutrient deficiencies; nutrient uptake,   etc   ; Gossypium hirsutum; boron; calcareous soils; calcium; copper; cotton; crop yield; fertilizer application; field experimentation; iron; irrigation; magnesium; manganese; nitrogen; nutrient-nutrient interactions; nutrients; phosphorus; potassium; zinc; zinc fertilizers; zinc sulfate;     Show all 24 Subjects
Abstract:
... Zinc (Zn) deficiency is often associated with calcareous soils throughout the world, whereas application of Zn not only enhances biological yield but exhibits significant interactions with nutrients. Hence, a two-year field experiment was performed in 2004 and 2005 to assess the crop Zn requirements as well as nutrient interactions in cotton. The present study followed a randomized complete block ...
DOI:
10.1080/00103624.2018.1559330

5. Considering the effects of temperature × nutrient interactions on the thermal response curve of carrying capacity

Author:
Lemoine, Nathan P.
Source:
Ecology 2019 v.100 no.4 pp. e02599
ISSN:
0012-9658
Subject:
nutrient uptake; nutrient-nutrient interactions,   etc   ; carrying capacity; extinction; global warming; insects; models; phytoplankton; prediction; risk; temperature; thermodynamics;     Show all 12 Subjects
Abstract:
... Climate warming will likely destabilize populations or drive consumers locally extinct. These predictions arise from consumer–resource models incorporating temperature‐dependent parameters, and the accuracy of these predictions hinges on the validity of temperature scalings for each parameter. Among all parameters, carrying capacity (K) is the most ill‐defined and the temperature scaling of this p ...
DOI:
10.1002/ecy.2599

6. Biochar application alleviates unbalanced nutrient uptake caused by N deposition in Torreya grandis trees and seedlings

Author:
Zhang, Rui; Zhao, Yuxin; Lin, Jianhong; Hu, Yuanyuan; Hänninen, Heikki; Wu, Jiasheng
Source:
Forest ecology and management 2019 v.432 pp. 319-326
ISSN:
0378-1127
Subject:
nutrient balance; nutrient uptake; nutrients,   etc   ; Torreya grandis; biochar; forest management; nitrogen; nitrogen content; phosphorus; seedlings; soil; soil amendments; trees; China;     Show all 14 Subjects
Abstract:
... Foliar nitrogen: phosphorus (N:P) ratio is a valuable indicator of nutrient limitation in forest ecosystems. The ratio is currently dramatically affected by the increasing anthropogenic N deposition in China. Biochar, a soil amendment, has profound benefits for improving soil N and P availability. However, little is known about N and P uptake and nutrient balance of plants growing on biochar-amend ...
DOI:
10.1016/j.foreco.2018.09.040

7. Cross-ridge tillage decreases nitrogen and phosphorus losses from sloping farmlands in southern hilly regions of China

Author:
Guo, Shufang; Zhai, Limei; Liu, Jian; Liu, Hongbin; Chen, Anqing; Wang, Hongyuan; Wu, Shuxia; Lei, Qiuliang
Source:
Soil & tillage research 2019 v.191 pp. 48-56
ISSN:
0167-1987
Subject:
nutrient content; nutrient management; nutrients,   etc   ; agricultural land; eutrophication; fertilizers; field experimentation; land degradation; nitrogen; phosphorus; rain; runoff; sediment yield; soil; soil erosion; soil nutrients; temporal variation; tillage; China;     Show all 19 Subjects
Abstract:
... Losses of nutrients, water and soil from sloping farmlands have a large potential to contribute to water eutrophication and land degradation. However, few long-term and multi-site measurements are available to assess the magnitude of effects of cross-ridge tillage on surface runoff and nitrogen (N) and phosphorus (P) losses from sloping farmlands. Field experiments were conducted under natural rai ...
DOI:
10.1016/j.still.2019.03.015

8. Engineering Robust Production Microbes for Large-Scale Cultivation

Author:
Wehrs, Maren; Tanjore, Deepti; Eng, Thomas; Lievense, Jeff; Pray, Todd R.; Mukhopadhyay, Aindrila
Source:
Trends in microbiology 2019 v.27 no.6 pp. 524-537
ISSN:
0966-842X
Subject:
nutrients,   etc   ; bioreactors; dissolved gases; microorganisms; synthetic biology;     Show all 5 Subjects
Abstract:
... Systems biology and synthetic biology are increasingly used to examine and modulate complex biological systems. As such, many issues arising during scaling-up microbial production processes can be addressed using these approaches. We review differences between laboratory-scale cultures and larger-scale processes to provide a perspective on those strain characteristics that are especially important ...
DOI:
10.1016/j.tim.2019.01.006

9. Impact of updated standard tables of food composition on nutrient intakes in Japan

Author:
Saito, Aki; Okada, Emiko; Matsumoto, Mai; Takimoto, Hidemi
Source:
Subtropical plant science 2019 v.79 pp. 5-11
ISSN:
0889-1575
Subject:
nutrient content; nutrient databanks; nutrient intake,   etc   ; energy intake; food groups; food intake; longitudinal studies; magnesium; meat; national surveys; nutrients; nutrition surveys; nutritive value; vitamin D; Japan;     Show all 15 Subjects
Abstract:
... This study aimed to identify the influence of revisions to the food composition database in Japan, on nutrient intake estimates using one-day food intake data from 26,133 participants of the National Health and Nutrition Survey, 2016. The nutrient profiles of food intakes were developed using two editions of the Japanese Standard Food Composition Tables (2010 and 2015 editions), and differences re ...
DOI:
10.1016/j.jfca.2019.02.008

10. Boron and zinc deficiencies and toxicities and their interactions with other nutrients in soybean roots, leaves, and seeds

Author:
Pawlowski, Michelle L.; Helfenstein, Julian; Frossard, Emmanuel; Hartman, Glen L.
Source:
Journal of plant nutrition 2019 v.42 no.6 pp. 634-649
ISSN:
1532-4087
Subject:
nutrient deficiencies; nutrient-nutrient interactions; nutrients,   etc   ; Glycine max; boron; iron; leaves; manganese; physiological response; plant growth; plant tissues; roots; seeds; soil; soybeans; toxicity; zinc;     Show all 17 Subjects
Abstract:
... In many parts of the world, soils deficient and/or toxic in micronutrients reduce potential soybean (Glycine max) yields. The objective of our study was to grow plants in low to high concentrations of boron (B) and zinc (Zn) to determine how B and Zn deficiencies and toxicities affect soybean growth and interact with other essential nutrients in roots, leaves, and seeds. We found that B significan ...
DOI:
10.1080/01904167.2019.1567782

11. Nutrient affinity, half‐saturation constants and the cost of toxin production in dinoflagellates

Author:
Kiørboe, Thomas; Andersen, Ken H.
Source:
Ecology letters 2019 v.22 no.3 pp. 558-560
ISSN:
1461-023X
Subject:
nutrient uptake,   etc   ; Miozoa; enzyme kinetics; toxins;     Show all 4 Subjects
Abstract:
... The two parameters of the Michaelis–Menten model, the maximum uptake rate and the half‐saturation constant, are not stochastically independent, and the half‐saturation constant is not a measure of nutrient affinity, as commonly assumed. Failure to realise their interdependence and mechanistic interpretation may lead to the emergence of false trade‐offs. ...
DOI:
10.1111/ele.13208

12. Correction to: Magnesium deficiency affects secondary lignification of the vascular system in Citrus sinensis seedlings

Author:
Huang, Jing-Hao; Xu, Jing; Ye, Xin; Luo, Tu-Yan; Ren, Li-Hua; Fan, Guo-Cheng; Qi, Yi-Ping; Li, Qiang; Ferrarezi, Rhuanito S.; Chen, Li-Song
Source:
Trees 2019 v.33 no.1 pp. 313
ISSN:
0931-1890
Subject:
nutrient deficiencies,   etc   ; Citrus sinensis; lignification; magnesium; seedlings;     Show all 5 Subjects
Abstract:
... Unfortunately, the 9th author family name was incorrectly published in the original publication. The complete correct name should read as follows. ...
DOI:
10.1007/s00468-018-1782-0

13. Short-term effects of organo-mineral enriched biochar fertiliser on ginger yield and nutrient cycling

Author:
Farrar, Michael B.; Wallace, Helen M.; Xu, Cheng-Yuan; Nguyen, Thi Thu Nhan; Tavakkoli, Ehsan; Joseph, Stephen; Bai, Shahla Hosseini
Source:
Journal of soils and sediments 2019 v.19 no.2 pp. 668-682
ISSN:
1439-0108
Subject:
nutrient availability; nutrient content; nutrients,   etc   ; Zingiber officinale; aboveground biomass; biochar; biogeochemical cycles; calcium; crops; economic feasibility; ginger; organic fertilizers; phosphorus; plant growth; planting; potassium; rhizomes; soil; soil nutrients;     Show all 19 Subjects
Abstract:
... PURPOSE: Biochar has agronomic potential but currently is too expensive for widespread adoption. New methodologies are emerging to reduce the cost such as enriching biochar with nutrients that match crops and soil requirements. However, the effects of biochar-based fertilisers on plant yield and soil nutrient availability have not been widely examined. This study investigated the effects of a nove ...
DOI:
10.1007/s11368-018-2061-9

14. Comparative on plant stoichiometry response to agricultural non-point source pollution in different types of ecological ditches

Author:
Wang, Junli; Chen, Guifa; Zou, Guoyan; Song, Xiangfu; Liu, Fuxing
Source:
Environmental science and pollution research international 2019 v.26 no.1 pp. 647-658
ISSN:
0944-1344
Subject:
nutrient availability; nutrient balance; nutrient content,   etc   ; Vallisneria; agricultural development; concrete; economic plants; ecosystem services; ecosystems; homeostasis; nonpoint source pollution; nutrients; soil; stoichiometry; total nitrogen; total phosphorus; wetlands;     Show all 17 Subjects
Abstract:
... Long-term agricultural development has led to agricultural non-point source (NPS) pollution. Ecological ditches (eco-ditch), as specific wetland systems, can be used to manage agricultural NPS water and achieve both ecological and environmental benefits. In order to understand which type of eco-ditch systems (Es, soil eco-ditch; Ec, concrete eco-ditch; Eh, concrete eco-ditch with holes on double-s ...
DOI:
10.1007/s11356-018-3567-9

15. Real-farming emissions of reactive nitrogen – Necessities and challenges

Author:
Sundrum, Albert
Source:
Journal of environmental management 2019 v.240 pp. 9-18
ISSN:
0301-4797
Subject:
nutrient management; nutrients,   etc   ; cost effectiveness; emissions; farm management; farmers; farming systems; livestock; models; nitrogen; pollutants; pollution;     Show all 12 Subjects
Abstract:
... Reactive nitrogen (Nr) is both a principal factor regulating growth in biological systems and a significant pollutant for the environment. The objective of this paper is to reflect on the challenges of the nutrient management related to and priorities needed to clarify how Nr is employed appropriately whilst striving to mitigate emissions at the same time.To create orientation, valid data are need ...
DOI:
10.1016/j.jenvman.2019.03.080

16. Modeling the interaction of light and nutrients as factors driving lake eutrophication

Author:
Dou, Ming; Ma, Xiaokuan; Zhang, Yan; Zhang, Yongyong; Shi, Yaxin
Source:
Ecological modelling 2019 v.400 pp. 41-52
ISSN:
0304-3800
Subject:
nutrient content; nutrients,   etc   ; algae; eutrophication; lakes; light intensity; models; nitrogen; phosphorus;     Show all 9 Subjects
Abstract:
... Eutrophication is a major problem in the field of water environments at present, and its main driving factors are light and nutrients. In this paper, the process of eutrophication in small artificial lake is studied, according to the principle of water optics and conservation of mass, the light and the nitrogen and phosphorus in water nutrients were selected as influencing factors, and 16 differen ...
DOI:
10.1016/j.ecolmodel.2019.03.015

17. Nutrients, immune system, and exercise: Where will it take us?

Author:
Batatinha, Helena A.P.; Biondo, Luana A.; Lira, Fabio S.; Castell, Linda M.; Rosa-Neto, José C.
Source:
Nutrition 2019 v.61 pp. 151-156
ISSN:
0899-9007
Subject:
nutrient availability; nutrients,   etc   ; biochemical pathways; energy; exercise; glucose; glutamine; homeostasis; immune system; metabolism;     Show all 10 Subjects
Abstract:
... The immune system plays a key role in controlling infections, repairing injuries, and restoring homeostasis. Immune cells are bioenergetically expensive during activation, which requires a tightly regulated control of the metabolic pathways, which is mostly regulated by two cellular energy sensors: Adenosine monophosphate–activated protein kinase and mammalian target of rapamycin. The activation a ...
DOI:
10.1016/j.nut.2018.09.019

18. Phytoplankton nutrient deficiencies vary with season in sub-tropical lakes of Nepal

Author:
Rowland, Freya E.; North, Rebecca L.; McEachern, Preston; Obrecht, Daniel V.; Gurung, Tek Bahadur; Jones, Susan B.; Jones, John R.
Source:
Hydrobiologia 2019 v.833 no.1 pp. 157-172
ISSN:
0018-8158
Subject:
nutrient deficiencies; nutrients,   etc   ; freshwater ecosystems; hydrology; lakes; monsoon season; nitrogen; phosphorus; phytoplankton; stoichiometry; Nepal;     Show all 11 Subjects
Abstract:
... This is one of few studies to comprehensively examine seasonality and phytoplankton nutrient deficiency in sub-tropical lakes over multiple years, to our knowledge. We tested whether phytoplankton communities in two sub-tropical impoundments in the mid-hills of Nepal were nitrogen (N)-, phosphorus (P)-, or co-deficient in N and P across pre-monsoon, monsoon, and post-monsoon seasons spanning a dec ...
DOI:
10.1007/s10750-019-3897-8

19. Competition and predation as possible causes of bacterial rarity

Author:
Kurm, Viola; van der Putten, Wim H.; Weidner, Simone; Geisen, Stefan; Snoek, Basten L.; Bakx, Tanja; Hol, Wilhelmina H. Gera
Source:
Environmental microbiology 2019 v.21 no.4 pp. 1356-1368
ISSN:
1462-2912
Subject:
nutrient availability; nutrient content,   etc   ; environmental factors; predation; protists; soil; soil bacteria;     Show all 7 Subjects
Abstract:
... We assembled communities of bacteria and exposed them to different nutrient concentrations with or without predation by protists. Taxa that were rare in the field were less abundant at low nutrient concentrations than common taxa, independent of predation. However, some taxa that were rare in the field became highly abundant in the assembled communities, especially under ample nutrient availabilit ...
DOI:
10.1111/1462-2920.14569

20. Nitrogen deposition effect on forest litter decomposition is interactively regulated by endogenous litter quality and exogenous resource supply

Author:
Chen, Fu-Sheng; Wang, G. Geoff; Fang, Xiang-Min; Wan, Song-Ze; Zhang, Yang; Liang, Chao
Source:
Plant and soil 2019 v.437 no.1-2 pp. 413-426
ISSN:
0032-079X
Subject:
nutrient availability; nutrients,   etc   ; carbon; forest litter; laboratory experimentation; microorganisms; nitrogen; stable isotopes;     Show all 8 Subjects
Abstract:
... BACKGROUND AND AIMS: Atmospheric nitrogen (N) deposition affects litter decomposition. However, how endogenous litter quality and exogenous resource supply alter the N deposition effect on litter decomposition and deposited N immobilized by microbes remains unclear. METHODS: We conducted a laboratory experiment to examine how the N deposition effect on litter decomposition varies with endogenous l ...
DOI:
10.1007/s11104-019-04006-z