Knowde Enhanced TDS
Identification & Functionality
- Agrochemical Functions
- Technologies
Features & Benefits
- Ammonia Volatilisation
Up to 50% of Nitrogen can be lost to the atmosphere as ammonia gas from applied urea due to the activity of the naturally occurring enzyme urease. Up to 30% of this nitrogen loss can occur in the first 72 hours following application. A large number of factors make volatilisation amounts variable and difficult to predict. Factors affecting volatilisation include soil moisture, wind, high soil pH (>8), high soil temperature or frozen soil, high levels of crop residues and low soil organic matter. The loss of nitrogen to the atmosphere as ammonia gas is the main reason why urea has often been shown to be less effective for crop uptake compared to nitrate based sources.
- Benefits of ARM U Advanced
By minimizing the urease enzyme activity, the ARM U Advanced coating inhibits volatilisation of ammonia from applied urea by up to 96%. Slowing the hydrolysis allows more time for the urea to diffuse into the soil, or for rainfall/irrigation to occur and also minimizes seedling damage associated with ammonia gas emissions. ARM U Advanced is an improved formulation over previous NBPT technologies in that it contains specific polymers and other molecules to bind the urea, providing uniform coverage without aggregation or sticking. These molecules increase NBPTs activity by enhancing its affinity to the urease enzyme. This increased activity enables a lower active ingredient and use rate while maintaining efficacy. ARM U Advanced also controls the nitrification conversion of ammonia to nitrate which allows more of the slowly available nitrogen to be captured by crops for use and also application rates to be lowered. ARM U Advanced is formulated to have a high buffering capacity to ensure the pH remains below 7 at all times. Maintaining a pH of 7 has several important impacts. Firstly, it protects against NBPT degradation and subsequent volatilisation of N as ammonia. Secondly, due to this increased stability, urea users realize the maximum level of N inhibited by the NBPT technology. Finally, maintaining pH 7 assures the long term stability of NBPT molecules to continue to prevent urease activity over an extended period. ARM U Advanced has high flowability, dust control properties and is cold tolerant to -22oC making it easy to handle and store in cooler conditions.
Applications & Uses
- Markets
- Applications
- Applicable Crop
- Application Technique
- Uses
- Blend with prilled Urea
- Blend into liquid Urea and Urea-ammonium nitrate (UAN) solutions
- Nitrate Loss
As ammonia is converted to nitrate it changes polarity to negative and as soil is negatively charged nitrate will quickly pass through the soil profile. Some is caputured by crops, however much of the applied nitrogen is lost to leaching.
- ARM U Advanced in practice for European conditions
Temperatures across Europe can vary greatly going both up and down after application, and can have significant effects on urease inhibitor technologies and their efficacy. Low temperatures are always a help to slow down enzymatic processes however fluctuation as soils temperatures warm are the issue. ARM U Advanced has been extensively trialed in lab and in field for this purpose and remains fully stable from -22o C up to +35o C. The second issue across Europe is rainfall. In the UK, rainfall can be more than desirable and in the warmer climates of Europe, there may be no rainfall after application for several days or weeks. For traditional urease inhibitor molecules this creates efficacy issues however the multi-compound coating which is ARM U Advanced remains effective for 8 weeks whatever the weather. The NBPT molecule (N-(n-butyl) thiophosphoric triamide) is regarded as the best active for inhibiting urease enzyme activity and the patent for ARM U Advanced is based on the technological advances the multi-compound coating offers blenders and users whether urea is solid or in solution.
- Application Rates
Product Application rate Liquid Urea/Liquid UAN 1.1L ARM U Advanced per 1000L Solution Urea 1.8L ARM U Advanced per 1000kg Urea - Blending Instructions
- Liquid Urea and Urea-Ammonium Nitrate
Use 1.1L ARM U Advanced per 1000L Solution. Fill spray tank with half the desired amount of UREA/UAN. Measure the recommended quantity of ARM U Advanced and add to the tank. Mix well, add other products at this stage if needed. Add the second half of the UREA/UAN solution. Continue mixing until well blended .
- Liquid Urea or Liquid UAN containing products
There are many products in use in agriculture which utilize ureic or ammoniacal nitrogen as their N source and ARM U Advanced is ideal for slow releasing these liquids. Use 1.1L ARM U Advanced per 1000L of liquid fertilizer. Fill blending tank with half the desired amount of fertilizers especially those containing UREA/UAN. Measure the recommended quantity of ARM U Advanced and add to the tank. Mix well, add other fertilizers at this stage if needed. Add the second half of the UREA/UAN solution. Continue mixing until well blended.
- Prilled Urea
Use 1.8L ARM U Advanced per 1000kg Urea. For uniform blending use a blender with impregnation equipment. Weigh the urea and transfer to blender. Add the required amount of ARM U Advanced to the urea in the blender. Blend until the ARM U Advanced is uniformly mixed into the urea. Do not add any other fertilizer products until ARM U Advanced is thoroughly distributed. If mixture appears wet or sticky a drying agent may be added at this time.
Properties
- Physical Form