Results 71 to 80 of about 1,249,363 (328)

Interactions between nitrate and ammonium in their uptake, allocation, assimilation, and signaling in plants.

open access: yesJournal of Experimental Botany, 2016
Nitrogen (N) availability is a major factor determining plant growth and productivity. Plants acquire inorganic N from the soil, mainly in the form of nitrate and ammonium.
Takushi Hachiya, H. Sakakibara
semanticscholar   +1 more source

A 110,000‐year history of change in continental biogenic emissions and related atmospheric circulation inferred from the Greenland Ice Sheet Project Ice Core [PDF]

open access: yes, 1997
The 110,000‐year record of ammonium concentrations from the Greenland Ice Sheet Project 2 (GISP2) ice core provides the basis for an analysis of terrestrial biological production and atmospheric circulation patterns involved in the transport of ...
Mayewski, Paul A.   +4 more
core   +3 more sources

Teores de nitrato (NO3-) e amônio (NH4+) nas águas do aqüífero Barreiras nos bairros do Reduto, Nazaré e Umarizal - Belém/PA Nitrate (NO3-) and ammonium (NH4+) contents in the Barreiras aquifer waters in the districts of Reduto, Nazaré and Umarizal - Belém, PA

open access: yesQuímica Nova, 2007
This paper evaluates the occurrence of nitrate and ammonium in the Barreiras aquifer in the metropolitan area of Belém, Pará State, Brazil. The results show that some wells display ammonium and nitrate concentrations above or close to the limits of water
Natalina Maria Tinôco Cabral
doaj   +1 more source

Factors affecting ammonium uptake in streams - an inter-biome perspective [PDF]

open access: yes, 2003
The Lotic Intersite Nitrogen experiment (LINX) was a coordinated study of the relationships between North American biomes and factors governing ammonium uptake in streams. Our objective was to relate inter-biome variability of ammonium uptake to physical,
Bowden, William B.   +18 more
core   +1 more source

Comparison of nitrification inhibitors to restrict nitrate leaching in a maize crop irrigated under mediterranean conditions [PDF]

open access: yes, 2010
The aim of this paper was to compare dicyandiamide (DCD) and 3,4 dimethylpyrazole phosphate (DMPP) as inhibitors of ammonium oxidation and nitrate leaching after applying fertilizer to a maize (Zea mays L.) crop grown under Mediterranean conditions.
Arauzo, M.   +4 more
core   +3 more sources

Simulating the transport of dissolved ammonium-nitrogen and phosphate-phosphorous to streams using artificial neural network (ANN) [PDF]

open access: yesarXiv, 2020
The export of agricultural fertilizers to streams results in untold harms to downstream water quality and thus ecosystem. Understanding and simulating the export of these chemicals is the first step to control their transport to streams. In this paper, the export of ammonium and phosphate, two major contaminants resulted from agricultural activities ...
arxiv  

High pressure structural, elastic and vibrational properties of green energetic oxidizer ammonium dinitramide [PDF]

open access: yesThe Journal of Chemical Physics 145, 064706 (2016), 2016
Ammonium DiNitramide (ADN) is one of the most promising green energetic oxidizers for future rocket propellant formulations. In the present work, we report a detailed theoretical study on structural, elastic, and vibrational properties of the emerging oxidizer under hydrostatic compression using various dispersion correction methods to capture weak ...
arxiv   +1 more source

Ammonium Phosphate [PDF]

open access: yesJournal of Industrial & Engineering Chemistry, 1915
n ...
openaire   +2 more sources

Effect of long-term changes in soil chemistry induced by road salt applications on N-transformations in roadside soils [PDF]

open access: yes, 2008
Of several impacts of road salting on roadside soils, the potential disruption of the nitrogen cycle has been largely ignored. Therefore the fates of low-level ammonium-N and nitrate-N inputs to roadside soils impacted by salting over an extended period (
Cresser, M.S., Green, S.M., Machin, R.
core   +1 more source

Nitrogen fertilizer rate but not form affects the severity of Fusarium wilt in banana

open access: yesFrontiers in Plant Science, 2022
Nitrogen (N) fertilizers are routinely applied to bananas (Musa spp.) to increase production but may exacerbate plant diseases like Fusarium wilt of banana (FWB), which is the most economically important disease.
Ryan Orr   +14 more
doaj   +1 more source

Home - About - Disclaimer - Privacy