An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
nutrientuseefficiency, etc ; livestock; nitrogen metabolism; Reunion; Show all 4 Subjects
Abstract:
... Increasing nutrient circularity and use efficiency is a leading topic in the search for more sustainable agri-food-waste systems (AFWS). This paper proposes a method to assess the role of crops and livestock in nutrient circularity and use efficiency in an AFWS. The method is based on the analysis of nutrient flows, a detailed typology of flows, and a set of 3 groups of indicators to characterize ...
nutrientuseefficiency, etc ; environment; evolution; fertilizer application; food consumption; greywater; humans; livestock; nitrogen; river deltas; sewage treatment; water footprint; water pollution; water quality; Yangtze River; Show all 15 Subjects
Abstract:
... Anthropogenic reactive nitrogen (Nr) emissions from agricultural production and food consumption in city clusters have caused water quality degradation and scarcity. In this study, anthropogenic Nr emissions to the water environment were quantitatively evaluated in the Yangtze River Delta city cluster from 2011 to 2020 using coupling nitrogen (N) flow analysis and the grey water footprint (GWF) me ...
Ester dos Santos Coêlho; Almir Rogério Evangelista de Souza; Hamurábi Anizio Lins; Manoel Galdino dos Santos; Matheus de Freitas Souza; Francilene de Lima Tartaglia; Anna Kézia Soares de Oliveira; Welder de Araújo Rangel Lopes; Lindomar Maria Silveira; Vander Mendonça; Aurélio Paes Barros Júnior
nutrientuseefficiency, etc ; Helianthus annuus; cultivars; nitrogen; Show all 4 Subjects
Abstract:
... The large variation in the response of sunflower to nitrogen fertilization indicates the need for studies to better adjust the optimum levels of this nutrient for production conditions. Our objectives were to analyze the agronomic yield of sunflower cultivars as a function of nitrogen fertilization; indicate the cultivar with high nitrogen use efficiency; and measure the adequate N dose for sunflo ...
nutrientuseefficiency, etc ; agricultural research; biodegradability; chitosan; ecological footprint; Show all 5 Subjects
Abstract:
... Global agriculture is urgently seeking ways to mitigate the detrimental effects of conventional chemical fertilizers on the environment. Biodegradable, eco-friendly, renewable energy-sourced next-generation fertilizers could be an answer, allowing for improved nutrient use efficiency and a lower environmental footprint. During the last decade, agricultural research on chitosan nanomaterials (NMs) ...
nutrientuseefficiency, etc ; absorption; corn; cultivars; grain yield; grasslands; nitrogen; Show all 7 Subjects
Abstract:
... We investigated the maize grain yield in response to nitrogen topdressing at different planting densities and planting patterns (twin row, TR; narrow row, NR; and conventional row, CR) over 3 years using early‐maturing cultivars. The P8025 grain yield was higher with a nitrogen topdressing of 6 g/m² (N6) than without a nitrogen topdressing (N0) at all planting densities in 2017, 2018, and 2019. Th ...
nutrientuseefficiency, etc ; Eucalyptus; bark; bioenergy; biomass production; energy; forests; Uruguay; Show all 8 Subjects
Abstract:
... The identification of optimal rotation length of forest crops considering production and environmental perspectives is a major concern for eucalypts since plantations costs are high and nutrient extraction is considerable. This study assessed biomass productivity, energy yield and nutrient use efficiency of E. benthamii,E. dunnii and E. grandis plantations for energy purposes, with densities of 22 ...
nutrientuseefficiency, etc ; basil; hydroponics; malnutrition; nutrient solutions; potassium; silicon; sulfur; Show all 8 Subjects
Abstract:
... The stress-mitigating effect promoted by silicon is well documented, but considering nutritional stress due to deficiency, which is common in plants, there is still a shortage of prominent research on vegetables, such as basil. Our objective was to verify the role of silicon (Si) in basil plants grown in hydroponics with complete nutrient solution and with the individual omission of N, K and S. Th ...
Talles de Oliveira Santos; Fábio Tomaz de Oliveira; Antônio Teixeira do Amaral Junior; Janeo Eustáquio de Almeida Filho; Rosimeire Barboza Bispo; Marta Simone Mendonça de Freitas; José Francisco Teixeira do Amaral; Samuel Henrique Kamphorst; Valter Jário de Lima; Flávia Nicácio Viana; Guilherme Ferreira Pena; Pedro Henrique Araújo Diniz Santos; Wallace de Paula Bernado; Messias Gonzaga Pereira; Jurandi Gonçalves de Oliveira; Ricardo Enrique Bressan-Smith; Roberto dos Santos Trindade
nutrientuseefficiency, etc ; diallel analysis; genes; heterosis; phosphorus; popcorn; recurrent selection; Brazil; Show all 8 Subjects
Abstract:
... Phosphorus is a non-renewable natural resource that will run out of reserves in the upcoming decades, making it essential to understanding the inheritance of nutrient use efficiency for selecting superior genotypes. This study investigated the additive and non-additive effects of commercially relevant traits for the popcorn crop (grain yield—GY, popping expansion—PE, and expanded popcorn volume pe ...
nutrientuseefficiency, etc ; Arabidopsis; ammonium; environment; glycosylation; nitrogen; nutrition; rice; transcription factors; Show all 9 Subjects
Abstract:
... Rice is known for its superior adaptation to ammonium (NH₄⁺) as a nitrogen source. Compared to many other cereals, it displays lower NH₄⁺ efflux in roots and higher nitrogen‐use efficiency on NH₄⁺. A critical role for GDP‐mannose pyrophosphorylase (VTC1) in controlling root NH₄⁺ fluxes was previously documented in Arabidopsis, but the molecular pathways involved in regulating VTC1‐dependent NH₄⁺ e ...
nutrientuseefficiency, etc ; Pinus koraiensis; carbon; carbon dioxide; nitrogen; phosphorus; photosynthesis; starch; Show all 8 Subjects
Abstract:
... Needle experience large variations in photosynthetic rates in response to cone presence and needle aging. Exploring the interaction effect of these factors on photosynthetic traits is helpful to understand the source-sink relationship between needles and cones. Here, we examined the impact of needle age on needle CO₂ assimilation rate (Pₙ), needle mass per area (LMA), and needle concentration of s ...
nutrientuseefficiency, etc ; farms; nitrogen; ownership; profits and margins; risk; spring; surveys; Switzerland; Show all 9 Subjects
Abstract:
... We present data on the stated preference for the adoption of variable rate technologies from 418 crop farmers in Switzerland. The online survey was conducted online in spring 2021. It consisted of two parts: 1) a choice experiment and 2) questions about farmers' characteristics, expectations and beliefs, as well as their risk preferences. In the choice experiment, farmers were presented with eight ...
nutrientuseefficiency, etc ; absorption; agronomy; biomass; nitrogen; phenotype; radiation use efficiency; rice; China; Show all 9 Subjects
Abstract:
... Improving nitrogen (N) use efficiency is important for achieving sustainable rice production in China. Physiological N use efficiency (PNUE) is a measure of a plant’s ability to convert absorbed N into biomass, and can be calculated as the product of the fraction of intercepted radiation to N absorption (FIRNA) and radiation use efficiency (RUE). This study evaluated the relationships between PNUE ...
nutrientuseefficiency, etc ; Japan; greenhouses; greywater; irrigation water; nitrogen; rice; water footprint; China; Show all 9 Subjects
Abstract:
... Maximizing resource use efficiency is generally recognized as a key strategy for developing an environment-friendly agricultural system. Although there have been many studies on single topic of resource use efficiency or environmental impacts, little is known about the spatially-explicit comprehensive estimation of the potentials in resource use efficiency improvement and environmental impacts mit ...
nutrientuseefficiency, etc ; environmental impact; genotype; nitrogen; research; soil; spring wheat; weather; Sweden; Show all 9 Subjects
Abstract:
... Nitrogen (N) is considered quantitatively most important for crop growth and productivity. The improvement of crop N use efficiency is economically beneficial to farmers and reduces the negative environmental impact of agriculture. Root traits are promising, yet underexploited breeding targets to improve N use efficiency. We aimed to evaluate (1) the effects of genotype and environment on N use ef ...
nutrientuseefficiency, etc ; chlorophyll; flowering; grain yield; nitrogen; photosynthesis; stomatal conductance; winter wheat; Show all 8 Subjects
Abstract:
... Nitrogen (N) supply and seed rate (SR) are two essential factors that affect the accumulation and partitioning of N and dry matter (DM) and, therefore, grain yield (GY) and N use efficiency (NUE). The objective of this experiment was to optimize N application and SR to regulate wheat growth and increase both GY and NUE. The results revealed that net photosynthetic rate (Pn), stomatal conductance ( ...
nutrientuseefficiency, etc ; Triticum aestivum; genetics; greenhouse gases; nitrogen; pollution; sustainable agriculture; wheat; Show all 8 Subjects
Abstract:
... Although essential for achieving high crop yields required for the growing population worldwide, nitrogen, (N) in large amounts, along with its inefficient use, results in environmental pollution and increased greenhouse gas (GHG) emissions. Therefore, improved nitrogen use efficiency (NUE) has a significant role to play in the development of more sustainable crop production systems. Considering t ...
nutrientuseefficiency, etc ; absorption; crayfish; fertilizer rates; nitrogen; nitrogen fertilizers; rice; soil; straw; Show all 9 Subjects
Abstract:
... PURPOSE: Understanding the direction of nitrogen flow in the rice-crayfish system (RC) and optimizing the rate of nitrogen fertilizer application (ORN). METHODS: To this end, there were four test treatments—(i) straw with feed (SF), (ii) straw with no feed (SN), (iii) no straw with feed (NF), and (iv) no straw with no feed (NN) that was conducted to delineate the flow of the nitrogen present in th ...
nutrientuseefficiency, etc ; Triticum aestivum; decision making; nitrogen; profitability; satellites; vegetation index; wheat; Show all 8 Subjects
Abstract:
... Reducing the decision-making unit to classes within fields can improve yields, efficiency in the use of nutrients and profitability of crops. The objectives were to compare methods for class delimitation in wheat (Triticum aestivum L.) crops based on apparent productivity levels and establish similarities among them in terms of spatial overlapping, productive attributes and the use of nitrogen. In ...
nutrientuseefficiency, etc ; dry season; fertilizers; grain yield; irrigation; nitrogen; rice; wet season; Show all 8 Subjects
Abstract:
... Among the essential plant nutrients, nitrogen (N) is the most important and universally deficient in rice cropping systems worldwide. Despite different practices available for improvement of N management, nitrogen use efficiency (NUE) is still very low in rice, particularly under conventional management practices. This study was conducted to assess the effect of two crop management practices inclu ...
nutrientuseefficiency, etc ; Oryza sativa; amino acids; brassinosteroids; cold; plant hormones; rice; China; Show all 8 Subjects
Abstract:
... Japonica/geng and indica/xian are two major rice (Oryza sativa) subspecies with multiple divergent traits, but how these traits are related and interact within each subspecies remains elusive. Brassinosteroids (BRs) are a class of steroid phytohormones that modulate many important agronomic traits in rice. Here, using different physiological assays, we revealed that japonica rice exhibits an overa ...