ammonium nitrate Articles | Agriculture XPRT

Simultaneous removal of ammonium and nitrate by HDTMA-modified zeolite

In this study, surfactant (hexadecyltrimethylammonium, HDTMA) modified zeolite (clinoptilolite) (SMZ) was used for simultaneous removal of ammonium and nitrate in wastewater, and the sorption properties of SMZ were determined. Results showed that natural clinoptilolite had good affinity for ammonium, but low sorption ability for nitrate, and the ammonium sorption process was well described by ...

Aug. 5, 2015

By IWA Publishing

Equivalency of broiler litter to ammonium nitrate as a cotton fertilizer in an upland soil

Estimates of litter value based on crop yield equivalency to inorganic fertilization may reflect the actual value of litter more accurately than estimates based on its N, P, and K content. The primary objective of this research was to identify a rate of broiler litter that results in cotton lint yield equivalent to inorganic N fertilization and to estimate litter value based on this yield ...

Dec. 31, 2009

By Soil Science Society of America (SSSA)

Winter wheat and maize response to urea ammonium nitrate and a new urea formaldehyde polymer fertilizer

Slow release N fertilizers have potential to improve yield and nitrogen use efficiency (NUE) in winter wheat (Triticum aestivum L.) and maize (Zea mays L.). A slow release urea formaldehyde polymer (UFP) was compared with aqueous urea ammonium nitrate (UAN) [(NH2)2CO, NH4NO3] during a 2-yr field experiment in North Carolina. Crops were grown on Candor (sandy, siliceous, thermic Grossarenic ...

Jun. 10, 2007

By Soil Science Society of America (SSSA)

Nitrogen Fixers

Here’s a bit of geeky plant science. On this image of the roots of white clover, you can plainly see bumps along the roots that are called nodules. Over millions of years, the plant has evolved a symbiotic relationship with certain species of soil-dwelling bacteria called Rhizobia. This group of bacteria has the ability to take nitrogen from the atmosphere and “fix” it by ...

Nov. 26, 2018

By West Coast Seeds

Combined effects of bisphenol A and cadmium on growth and nitrate assimilation of soybean seedling roots

Bisphenol A (BPA) and cadmium (Cd) pollution exist simultaneously in many regions. However, little information is available regarding the combined effects of BPA and Cd pollution on plants. Plant roots are in direct contact with the soil, which is an important compartment of BPA and Cd. Here, the effects of combined BPA and Cd pollution on soybean seedling roots were evaluated in pot ...

May 25, 2014

By John Wiley & Sons, Ltd.

Nutrient export in run-off from an in-field cattle overwintering site in East-Central Saskatchewan

Wintering cattle directly in the field creates potential concerns with water quality, as nutrients added from urine and fecal material over the winter can end up in runoff water, ground water and soil. In 2008/2009 an experiment was conducted to observe the effect of in-field winter feeding of cows on the nutrients in spring snowmelt run-off water. Low temperatures give little opportunity for ...

Dec. 31, 2010

By IWA Publishing

Effects of bisphenol A on growth and nitrogen nutrition of roots of soybean seedlings

Bisphenol A (BPA) is an environmental endocrine disruptor that seriously threatens ecological systems. Plants are the primary producers in ecological systems, but little information is available concerning the toxic effect of BPA on plants. In the present study, the effects of BPA on the growth and nitrogen nutrition of roots of soybean seedlings were investigated by using a root automatic scan ...

Oct. 25, 2012

By John Wiley & Sons, Ltd.

Evaluation of nitrogen sources and application methods for nitrogen-rich reference plot establishment in corn

Five different N sources were compared with null N treatment to evaluate their performance for N-rich reference plot establishment in corn (Zea mays L.). The sources, including calcium ammonium nitrate (CAN), urea ammonium nitrate (UAN), polymer-coated urea (PCU) and environmentally smart nitrogen (ESN) in 2007 and 2008, and urea (URE), were broadcast or in-soil banded at the rate of 225 kg N ...

Dec. 31, 2009

By Soil Science Society of America (SSSA)

Nitrogen and phosphorus pollution alter the mutual relationship between corals and algae

phosphorus pollution change the relationship between the pistillata and the algae living inside its tissues, a recent study has found. The researchers say the pollutants, mainly from urban and agricultural discharges, affect algae photosynthesis and the essential transfer of carbon from algae to the coral. Nitrogen and phosphorus pollution change the relationship between the tropical coral ...

Dec. 16, 2015

By European Commission, Environment DG

Uptake of point source depleted 15n fertilizer by neighboring corn plants

Ground-based active (self-illuminating) sensors make it possible to collect canopy data that are useful for making on-the-go N fertilizer application decisions. These technologies raise questions about plant-to-plant competition for targeted fertilizer N applications. This study evaluated the extent to which fertilizer N applied to an individual corn (Zea mays L.) plant might be intercepted by ...

Jan. 7, 2009

By Soil Science Society of America (SSSA)

Growth and nitrogen fixation in high-yielding soybean: Impact of nitrogen fertilization

In high-yielding soybean [Glycine max (L.) Merr.] environments, N uptake during seed-filling may be constrained when the late-season decline in biological nitrogen fixation (BNF) is coupled with insufficient soil N. Three N-fertilization strategies were compared with a control (N0) on soybeans in 2006 and 2007 in a high-yield soybean-maize (Zea mays L.) rotation experiment established in 1999. ...

Jul. 17, 2009

By Soil Science Society of America (SSSA)

Poul-AR Valorization of poultry manure - Fertilizer and energy from poultry manure

Application In contrast with generic manure types, poultry manure is very rich in nutrients as nitrogen (N) & phosphorus (P), but also in organic material. Both the form and the N/P ratio in which the nutrients are present make the manure less suitable for direct application as natural fertilizer. It leads to the release of large and undesired amounts of volatile ammonia into the ...

Feb. 8, 2015

By Colsen International b.v.

Potato response to a polymer-coated urea on an irrigated, coarse-textured soil

Controlled release fertilizers, especially polymer-coated urea (PCU), have been shown to reduce nitrate (NO3) leaching while maintaining potato (Solanum tuberosum L.) yields, but cost has been prohibitive. A new type of PCU (Environmentally Smart Nitrogen, Agrium, Inc., Calgary, AB) is less costly than previous PCUs, but its effectiveness on potato production has not been extensively studied. A ...

Jul. 16, 2009

By Soil Science Society of America (SSSA)

Leaching of Nitrogen and Phenolics from wood waste and co-composts used for road rehabilitation

Rehabilitation and reforestation of disused forest roads and landings can be facilitated by the incorporation of organic matter. The British Columbia forest industry creates residual woody materials, but they are nutrient poor and may leach phenolic compounds. We assessed the potential for wood wastes (chipped cedar wood waste, sort-yard waste, hogfuel) and co-composts with shellfish waste or ...

Jan. 12, 2009

By Soil Science Society of America (SSSA)

Nitrogen source and rate effects on the establishment of ‘TifSport’ and ‘Tifway’ hybrid bermudagrass

In the southeast United States, the most popular vegetatively propagated hybrid bermudagrass (Cynodon dactylon x C. transvaalensis Pers. L.) has long been the cultivar Tifway. In recent years, however, southern turf managers choosing cultivars for lawns, golf course fairways, or athletic fields have a newer option: ‘TifSport’ hybrid bermudagrass, also a vegetative selection. Although the use of ...

Mar. 16, 2009

By Soil Science Society of America (SSSA)

Fertilizer NPK from human urine and olive oil mill wastewaters

The objective of this work was to determine how some wastewater acids could be used to prevent the decomposition of urea into ammonia during storage. The effect of storing human urine with olive oil mill wastewaters (OOMW) or water bubbled with CO2 (BW), was studied. Moreover, the application of two levels of urine dissolved in water OOMW, has been studied in relation to the properties of two ...

Aug. 31, 2011

By IWA Publishing

Relationship between subsoil nitrogen availability and sugarbeet processing quality

The loss of sugar content and processing quality during the harvest period happens frequently in sugarbeet (Beta vulgaris L. ssp. vulgaris) grown in the Po Valley of Italy. The aim of this study was to assess the consequences on sugar content and quality of excess mineral N in the deep soil explored by the roots. Soil mineral N concentration and other chemical properties to a 3-m depth were ...

Dec. 31, 2009

By Soil Science Society of America (SSSA)

The mineralization of nitrogen from compost in the tropics

The application of organic matter is very important in maintaining high and stable crop yields under tropical conditions. Most of tropical soils are characterised by low content of organic matter and low structure stability. Animal wastes contain many nutrients, including nitrogen, phosphorous, potassium and other minerals. In addition to supplying nutrients, the application of animal wastes also ...

Jan. 1, 1999

By ORBIT e.V.

Effects of bisphenol a on mineral nutrition in soybean seedling roots

Bisphenol A (BPA) is a ubiquitous chemical in the environment and is potentially harmful to plants. However, relevant studies on the effects of BPA on plants are relatively scarce. In the present work, the effects of BPA on the biomass (fresh and dry weight), absorptive function (activity and absorptive area), and mineral element levels in soybean (Glycine max L.) seedling roots treated with ...

Oct. 14, 2014

By John Wiley & Sons, Ltd.

Tillage and fertilizer effects on yield, profitability, and risk in a corn-wheat-potato-wheat rotation

Reduced tillage results in lower production costs and thus may have economic advantages for farmers. However, yield penalties, specific yield risks, or higher nutrient requirements may counteract the positive effects of reduced tillage. This study investigates long-term tillage effects (moldboard plow, and deep and shallow chisel plow) and their interactions with N fertilizer input on yields and ...

Nov. 29, 2009

By Soil Science Society of America (SSSA)

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