Results 11 to 20 of about 58,540 (309)

Fast spectrophotometric measurement of nitrate in water, soil and plant [PDF]

open access: yesرویکردهای نوین در مهندسی آب و محیط زیست, 2023
Considering the plant's positive response to nitrogen, farmers consume nitrogen fertilizers as much as possible. Excessive consumption of nitrogen fertilizers imposes additional costs on farmers, environmental pollution and direct negative impact on ...
sajad amirhajloo   +2 more
doaj   +1 more source

Effect Of different Forms and Rates of Slow Release Urea Fertilizers on Growth, Yield and Quality of Maize Plants (Zea mays L.) [PDF]

open access: yesJournal of Soil Sciences and Agricultural Engineering, 2021
An experiment was conducted at the Experimental Farm of Sakha Agricultural Research Station, Kafr-Elsheikh, Egypt, during 2019 and 2020 to study the effect of different forms and rates of slow release urea nitrogen fertilizers; sulfur (SCU), formaldehyde
Alaa Albakry   +2 more
doaj   +1 more source

Effect of organic, biological and chemical fertilizers on yield and efficiency elements of sesame [PDF]

open access: yesفیزیولوژی محیطی گیاهی, 2021
In order to investigate the effect of organic, bio-chemical fertilizers on yield and efficiency components of sesame, a factorial experiment was conducted in Randomized Complete Blocks Design with three replications in two crop years in Kermanshah in ...
farzad babaei   +4 more
doaj   +1 more source

Nitrogen fertilizer: Retrospect and prospect [PDF]

open access: yesProceedings of the National Academy of Sciences, 1999
The rising fertilizer use accompanying more people eating more has been called exponential (1) and prompted fears of polluted water and consequent methemoglobinemia (2) and hypoxia (3). It also has raised alarm about greenhouse warming (4) and an altered global N cycle and thus primary production (5) and diversity (1) of vegetation. In this plethora of
C R, Frink, P E, Waggoner, J H, Ausubel
openaire   +2 more sources

The changes in microbial biomass C and N in long-term field experiments

open access: yesPlant, Soil and Environment, 2008
Microbial biomass nitrogen and carbon were studied in long-term field experiments with continuous cultivation of silage maize and with crop rotation. A positive effect of organic fertilizers on the microbial biomass nitrogen and the carbon content in ...
J. Černý   +3 more
doaj   +1 more source

Influence of mineral and organic fertilizers on the properties of serozem-meadow soils, nutritional dynamics and productivity of amaranth [PDF]

open access: yesE3S Web of Conferences, 2023
From the agrochemical properties of soils, their nutritional regime is of great importance. Since, plant nutrition is associated with it. In serozem-meadow soils, the nitrogen regime is in the most vulnerable position.
Ortikov T.   +3 more
doaj   +1 more source

Impact of nitrogen fertilizers on the natural weathering-erosion processes and fluvial transport in the Garonne basin [PDF]

open access: yes, 2000
Knowledge of the impact of N-fertilizers on the weathering-erosion processes of soils in intensively cultivated regions is of prime importance. Nitrification of NH4− fertilizers produces HNO3 in the basin of the Garonne river, enhancing soil degradation.
Probst, Jean-Luc   +7 more
core   +1 more source

TECHNICAL AND TECHNOLOGICAL APPLICATION OF LIQUID NITROGEN AND NITROGEN-CONTAINING FERTILIZERS ON THE BASIS OF KAS-32 IN SEEDING CEREAL AND GRAIN LEGUME CROPS [PDF]

open access: yesVolga Region Farmland, 2019
The article presents materials from the laboratory and field studies of the Samara State Agrarian University on the effectiveness of liquid mineral nitrogen and new nitrogen-sulfur fertilizers based on KAS-32 compared with solid fertilizers – ammonium ...
V.A. Milyutkin   +3 more
doaj   +1 more source

Uptake and Utilization of Nitrogen from Organic Fertilizers Influenced by Different Doses of Copper

open access: yesAgronomy, 2021
Copper is a microelement involved in the metabolism of nitrogen compounds in plants. Good utilization of nitrogen from soil and fertilizers by plants requires an adequate supply of copper.
Beata Kuziemska   +2 more
doaj   +1 more source

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