urea fertilizer Articles
-
Why to use sulphur coated urea fertilizer
With the continuous improvement of the level of agricultural science and technology, the promotion of high-yield varieties, the improvement of land re cultivation index, and the vigorous development of economic crops, flowers and urban greening. The growth of crops and the ecological balance of nutrients in the soil are becoming more and more serious, and the phenomenon of crop sulfur deficiency ...
-
Ammonia volatilization from Urea-based fertilizers applied to tall fescue pastures in Georgia, USA
The use of urea fertilizers in grasslands is likely to increase in areas with concentrated animal feeding operations as restrictions on manure applications are implemented. Concerns have been raised about the economic and environmental impacts of NH3 loss from these urea fertilizers. This study evaluated NH3 losses from Nitamin (a urea polymer), urea–NH4NO3 (UAN), and granular urea applied to ...
-
Interactive effects of landscape position and time of application on the response of spring wheat to fall-banded urea
The objective of this experiment was to quantify the effect of landscape position and time of application on the agronomic efficiency of fall-banded urea [CO(NH2)2] for spring wheat (Triticum aestivum L.) grown in the eastern prairie region of Canada. Landscape positions in this experiment were defined as high and low based on their relative elevations to one another within the field. Fertilizer ...
-
Influence of urea fertilizer placement on nitrous oxide production from a silt loam soil
Received for publication April 8, 2009. Urea placement in band or nests has been shown to enhance N use efficiency, but limited work has been done to assess its affect on N2O emissions. This study compared N2O emissions from urea prills applied to an Amsterdam silt loam (fine-silty, mixed, superactive, frigid Typic Haplustolls) using broadcast, band, and nest placements. Experiments were ...
-
Fertilizer application timing influences greenhouse gas fluxes over a growing season
Microbial production and consumption of greenhouse gases (GHG) is influenced by temperature and nutrients, especially during the first few weeks after agricultural fertilization. The effect of fertilization on GHG fluxes should occur during and shortly after application, yet data indicating how application timing affects both GHG fluxes and crop yields during a growing season are lacking. We ...
-
Nitrogenous Fertilizer Plants Industry - Pollution Prevention Guidelines
Introduction Pollution Prevention Guidelines to provide technical advice and guidance to staff and consultants involved in pollution-related projects. The guidelines represent state-of-the-art thinking on how to reduce pollution emissions from the production process. In many cases, the guidelines provide numerical targets for reducing pollution, as well as maximum emissions ...
-
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 ...
-
Which raw materials can be used wet granulation machinery?
There are two kinds of granulation processes for granular fertilizer such as organic fertilizer and compound fertilizer: one is the extrusion granulation process developed from feed granulation (common granulation equipment includes roller granulator and flat die pellet mill). The other is the wet granulation process (the typical granulation equipment includes disc pan granulator and roatary drum ...
-
Drying process of NPK manufacturing process
There are two conditions for the drying of NPK manufacturing process: temperature and air volume. If the inlet temperature of dryer (500 ~ 6000c) is too high, the material in dryer will change greatly. Because the decomposition and solubility of materials are related to temperature. Due to the decomposition of chemical fertilizer or the increase of solubility, the liquid phase of materials in the ...
-
Organic fertilizer and compound fertilizer combination granulating production line
Organic fertilizer and compound fertilizer combination granulating production line With the continuous development of science and technology, the requirement for fertilizer in agriculture is getting higher and higher. For different crops, different regions and soils, different fertilizers are needed to meet the actual needs. Organic-inorganic compound fertilizer develops rapidly and is widely ...
-
How seed-placed fertilizer may hurt your crops if not applied carefully and attentively
Placing fertilizer within the seed row has been long-standing practice for many farmers across the prairies. Having those nutrients close to the seed makes it easily accessible by the plant, and can help the crop out of the ground and into the sun. Potash fertilizers and other nutrients, such as phosphate, are immobile fertilizers, meaning they don’t travel more than a half-inch through ...
-
Solid agglomerate method of NPK compound fertilizer production line
Using monomer basic fertilizers such as: urea, ammonium nitrate, ammonium chloride, ammonium sulfate, ammonium phosphate monoammonium phosphate, diammonium phosphate, heavy calcium, ordinary calcium), potassium chloride (potassium sulfate), etc. as raw materials, they are crushed to After a certain degree of fineness, the material is agglomerated and granulated in the rolling bed of the drum ...
-
No-till and conventional-till cotton response to broiler litter fertilization in an upland soil: lint yield
The effectiveness of poultry litter as cotton (Gossypium hirsutum L.) fertilizer is not well documented for upland soils in the southern and southeastern United States. The objective of this research was to measure cotton yield response to broiler litter fertilization in contrast to inorganic N fertilization and to quantify yield reduction due to lack of incorporation under no-till and ...
-
The difference between organic fertilizer and chemical fertilizer
The difference between organic fertilizer and chemical fertilizer Difference Chemical fertilizer, manufactured by chemical or physical methods, containing one or more nutrient elements for crop growth. Also known as inorganic fertilizers, including nitrogen, phosphate, potash, micronutrients, compound fertilizers, etc. It has strong pertinence and quick effect. There are many kinds of chemical ...
-
The difference between organic fertilizer and chemical fertilizer
Difference between organic fertilizer and chemical fertilizer Chemical fertilizer, manufactured by chemical or physical methods, containing one or more nutrient elements for crop growth. Also known as inorganic fertilizers, including nitrogen, phosphate, potash, micronutrients, compound fertilizers, etc. It has strong pertinence and quick effect. There are many kinds of chemical fertilizers, the ...
-
Modeling the impact of nitrate fertilizers on groundwater quality in the southern part of the Nile Delta, Egypt
The use of fertilizers in agriculture in Egypt, especially nitrogen, has increased significantly in the last decade, resulting in nonpoint contamination of the groundwater resources. This study investigated the effect of using nitrogen fertilizer on groundwater contamination with nitrate in the central southern part of the Nile Delta. NO3− concentrations in shallow groundwater were assessed ...
-
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 ...
-
Mineral-nitrogen leaching and ammonia volatilization from a rice–rapeseed system as affected by 3,4-dimethylpyrazole phosphate
Received for publication November 9, 2008. 3,4-Dimethylpyrazole phosphate (DMPP) was validated as an effective nitrification inhibitor to reduce nitrate leaching. Its effects on ammonia (NH3) volatilization were not clear, especially on farmland scale with crop rotations. In this study, on-farm experiments at the Jiaxing (JX) and Yuhang (YH) sites in Taihu Lake Basin, China were conducted to ...
-
Greenhouse gas fluxes in an eastern corn belt soil: Weather, Nitrogen source, and rotation
Relative contributions of diverse, managed ecosystems to greenhouse gases are not completely documented. This study was conducted to estimate soil surface fluxes of carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) as affected by management practices and weather. Gas fluxes were measured by vented, static chambers in Drummer and Raub soil series during two growing seasons. Treatments ...
-
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 ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you