scholarly journals What is a plant nutrient? Changing definitions to advance science and innovation in plant nutrition

2021 ◽  
Author(s):  
Patrick H. Brown ◽  
Fang-Jie Zhao ◽  
Achim Dobermann
Keyword(s):  
Plant Growth ◽  
Plant Nutrition ◽  
Essential Elements ◽  
Plant Nutrients ◽  
Plant Nutrient ◽  
Resource Use Efficiency ◽  
Scientific Debate ◽  
Use Efficiency ◽  
New Vision ◽  
Definition Of

AbstractCurrent definitions of essential or beneficial elements for plant growth rely on narrowly defined criteria that do not fully represent a new vision for plant nutrition and compromise fertilizer regulation and practice. A new definition of what is a plant nutrient that is founded in science and relevant in practice has the potential to revitalize innovation and discovery. A proposed new definition might read: A mineral plant nutrient is an element which is needed for plant growth and development or for the quality attributes of the harvested product, of a given plant species, grown in its natural or cultivated environment. It includes elements currently identified as essential, elements for which a clear plant metabolic function has been identified, as well as elements that have demonstrated clear benefits to plant productivity, crop quality, resource use efficiency, stress tolerance or pest and disease resistance. We propose an open scientific debate to refine and implement this updated definition of plant nutrients. Other outcomes of this debate could be a more precise definition of the experimental evidence required to classify an element as a plant nutrient, and an independent scientific body to regularly review the list of essential and beneficial nutrients. The debate could also attempt to refine the definition of plant nutrients to better align with nutrients deemed essential for animal and human nutrition, thus following a more holistic ’one nutrition‘ concept.

scholarly journals Plasma membrane H+-ATPase overexpression increases rice yield via simultaneous enhancement of nutrient uptake and photosynthesis

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Maoxing Zhang ◽  
Yin Wang ◽  
Xi Chen ◽  
Feiyun Xu ◽  
Ming Ding ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Plasma Membrane ◽  
Food Security ◽  
Plant Growth ◽  
Rice Yield ◽  
Essential Elements ◽  
Rice Gene ◽  
Use Efficiency ◽  
Single Rice ◽  
N Use

AbstractNitrogen (N) and carbon (C) are essential elements for plant growth and crop yield. Thus, improved N and C utilisation contributes to agricultural productivity and reduces the need for fertilisation. In the present study, we find that overexpression of a single rice gene, Oryza sativa plasma membrane (PM) H+-ATPase 1 (OSA1), facilitates ammonium absorption and assimilation in roots and enhanced light-induced stomatal opening with higher photosynthesis rate in leaves. As a result, OSA1 overexpression in rice plants causes a 33% increase in grain yield and a 46% increase in N use efficiency overall. As PM H+-ATPase is highly conserved in plants, these findings indicate that the manipulation of PM H+-ATPase could cooperatively improve N and C utilisation, potentially providing a vital tool for food security and sustainable agriculture.

scholarly journals PGPR Mediated Alterations in Root Traits: Way Toward Sustainable Crop Production

2021 ◽  
Vol 4 ◽  
Author(s):  
Minakshi Grover ◽  
Shrey Bodhankar ◽  
Abha Sharma ◽  
Pushpendra Sharma ◽  
Jyoti Singh ◽  
...  
Keyword(s):  
Plant Growth ◽  
Root System ◽  
Resource Use ◽  
Root Architecture ◽  
Soil Microbial Communities ◽  
Root Traits ◽  
Root Trait ◽  
Resource Use Efficiency ◽  
System Functioning ◽  
Use Efficiency

The above ground growth of the plant is highly dependent on the belowground root system. Rhizosphere is the zone of continuous interplay between plant roots and soil microbial communities. Plants, through root exudates, attract rhizosphere microorganisms to colonize the root surface and internal tissues. Many of these microorganisms known as plant growth promoting rhizobacteria (PGPR) improve plant growth through several direct and indirect mechanisms including biological nitrogen fixation, nutrient solubilization, and disease-control. Many PGPR, by producing phytohormones, volatile organic compounds, and secondary metabolites play important role in influencing the root architecture and growth, resulting in increased surface area for nutrient exchange and other rhizosphere effects. PGPR also improve resource use efficiency of the root system by improving the root system functioning at physiological levels. PGPR mediated root trait alterations can contribute to agroecosystem through improving crop stand, resource use efficiency, stress tolerance, soil structure etc. Thus, PGPR capable of modulating root traits can play important role in agricultural sustainability and root traits can be used as a primary criterion for the selection of potential PGPR strains. Available PGPR studies emphasize root morphological and physiological traits to assess the effect of PGPR. However, these traits can be influenced by various external factors and may give varying results. Therefore, it is important to understand the pathways and genes involved in plant root traits and the microbial signals/metabolites that can intercept and/or intersect these pathways for modulating root traits. The use of advanced tools and technologies can help to decipher the mechanisms involved in PGPR mediated determinants affecting the root traits. Further identification of PGPR based determinants/signaling molecules capable of regulating root trait genes and pathways can open up new avenues in PGPR research. The present review updates recent knowledge on the PGPR influence on root architecture and root functional traits and its benefits to the agro-ecosystem. Efforts have been made to understand the bacterial signals/determinants that can play regulatory role in the expression of root traits and their prospects in sustainable agriculture. The review will be helpful in providing future directions to the researchers working on PGPR and root system functioning.

Resource Use Efficiency in Gram Production of Amravati Division

2011 ◽  
Vol 3 (9) ◽  
pp. 532-534
Author(s):  
Ganeshkumar D Rede ◽  
◽  
Dr. S. J. Kakde Dr. S. J. Kakde ◽  
Vanita Khobarkar
Keyword(s):  
Resource Use ◽  
Resource Use Efficiency ◽  
Use Efficiency

Analyzing the Russian tool-making industry within the sustainable development concept

2020 ◽  
Vol 16 (4) ◽  
pp. 662-677 ◽  
Author(s):  
T.N. Ryzhikova ◽  
V.G. Borovskii
Keyword(s):  
Sustainable Development ◽  
Hierarchical Level ◽  
Economic Systems ◽  
Resource Use Efficiency ◽  
The Sustainable Development ◽  
Case Methods ◽  
Hierarchical Levels ◽  
Use Efficiency ◽  
Intensive Development

Subject. The article explores the economic component of sustainable development through the classification of industries from the perspective of assigning the output goods to fixed or current assets, using different types of resources and assessing their condition. It considers factors of production affecting the achievement of the result and determining the development of economic systems at the meso- and micro-hierarchical level. Objectives. The aim is to assess the function of economic systems of different hierarchical levels on the tool-making facilities case. Methods. We apply an approach using general and special methods of comparative and statistical analysis, synthesis and analogies. Results. The paper analyzes the development of the Russian tool-making industry on the basis of resource-oriented approach to assess the functioning of economic systems at various levels. We review interrelations between resource use efficiency, types of sustainable development of economic systems at various hierarchical levels and strategic security of the country. Conclusions. Any development can be considered sustainable, if there is an increment in the intensive development of economic systems at all three levels.

Role of Finance in Resource use Efficiency and Constraints in Banana Cultivation in Uttar Pradesh

2020 ◽  
pp. 437-441
Keyword(s):  
Resource Use ◽  
Uttar Pradesh ◽  
Sampling Technique ◽  
Farm Size ◽  
Primary Data ◽  
Resource Use Efficiency ◽  
Regular Source ◽  
Block Level ◽  
Use Efficiency ◽  
Secondary Information

The study was conducted using purposive cum random sampling technique and two hundred respondents comprised of 100 each borrowers and non-borrowers were selected from two block of district including marginal, small and medium categories of farm size. Primary data were collected through personal interview technique and required secondary information was taken from the record available at district and block level. Simple tabular and functional analysis and Garrett ranking were done to draw inferences. As per the result obtained from the study, no much difference was seen between the resource use efficiency of borrower and non-borrower farms and constraints faced by borrower. Since banana is a cash crop and it needs initial costs for its establishment, and after harvesting the crop regular source of income was generated by selling of suckers (seed) plant and its fruits. It’s by-product, leaves, etc. also used for various purposes. Minute inspection of the analysis showed that finance played important role for initiating the cultivation of banana crops showed the resource use efficiency that there is no considerable difference found on sample farms of borrower and non-borrower categories. Constraints faced by majority of the farmers were mainly delay in disbursement of loan and lack of the repayment period insufficient and improper management for withdraws on KCC.

Comparison of Yield and Light-temperature Resource Use Efficiency between Wheat-Maize and Maize-Maize Cropping Systems

2015 ◽  
Vol 41 (9) ◽  
pp. 1393 ◽  
Author(s):  
Bao-Yuan ZHOU ◽  
Zhi-Min WANG ◽  
Yang YUE ◽  
Wei MA ◽  
Ming ZHAO
Keyword(s):  
Resource Use ◽  
Cropping Systems ◽  
Resource Use Efficiency ◽  
Use Efficiency

Assessment of the Culture of Care working with laboratory animals by using a comprehensive survey tool

2021 ◽  
pp. 002367722110144
Author(s):  
Thomas Bertelsen ◽  
Kirstine Øvlisen
Keyword(s):  
Performance Indicators ◽  
Essential Elements ◽  
Laboratory Animals ◽  
Survey Tool ◽  
Culture Of Care ◽  
Eu Directive ◽  
Comprehensive Picture ◽  
Comprehensive Survey ◽  
Definition Of ◽  
The Eu

The term Culture of Care, within the scientific community using laboratory animals, is being used more and more frequently after it was introduced in the EU Directive 2010/63/EU, where it is phrased as a ‘climate of care’, which became effective in national legislation from January 2013. However, there is a risk that the term could become a meaningless phrase if no agreed local definition of the term exists at the animal facility (called establishment in the EU Directive). This paper presents a comprehensive survey tool that provides a means to describe what the Culture of Care in an establishment looks like. The tool is one of the elements that can contribute to the overall picture of the culture; however, it cannot stand alone. Together with an evaluation of the effectiveness of the Culture of Care (e.g. key performance indicators) and a description of the outcomes and achievements in terms of animal welfare and the 3Rs (Replace, Reduce, Refine), the survey tool will constitute a comprehensive picture. The survey tool offers a multilevel and comprehensive view of different subcultures, presenting details on mindset and behaviour of the employees and the different relations within the culture, thus enabling the initiation of improvement projects if required. The tool addresses essential elements of a co-operative culture in terms of what we think, what we do and how we work together.

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