Density of Fertilizer (lb/gal) = Specific Gravity of fertilizer X 8.34 For example – assume a 5 gallon pail of water weighed 42.7 pounds after subtracting out the weight of the pail. When filled with 28% UAN, the weight of the fertilizer was 53.4 pounds.
How do you measure bulk density of fertilizer?
Bulk density is measured by weighing a container of known volume filled with a fertilizer sample. However, bulk density measurements can be reported in a variety of ways so it is important to have awareness of their definitions and which one to use when spreading fertilizer.
How do you calculate specific gravity of fertilizer?
Density of Fertilizer (lbs/gal) = Specific Gravity of fertilizer X 8.34 For example –-> assume a 5 gallon pail of water weighed 42.7 pounds after subtracting out the weight of the pail. When filled with 28% UAN, the weight of the fertilizer was 53.4 pounds. . Density of UAN = 1.28 x 8.34 = 10.67 lb/gal
How do you find the particle size of fertilizer?
Particle Size. SGN (Size Guide Number) values report on the average (not median) particle size multiplied by 100. For example, a fertilizer with an average particle size of 1.5 mm equates to a SGN = 150. Using sieves, once can interpret a SGN of 150 as 50% of particles were retained on a sieve with a 1.5mm opening.
How much does fertilizer weigh?
Density of Fertilizer (lb/gal)= Specific Gravity of fertilizer X 8.34 For example – assume a 5 gallon pail of water weighed 42.7 pounds after subtracting out the weight of the pail. When filled with 28% UAN, the weight of the fertilizer was 53.4 pounds.
What is density in fertilizer?
The FERTILIZER DENSITY SCALE accurately measures the density of dry fertilizer blends by both, pounds per cubic foot and kilograms per cubic meter. Fertilizer Density measurement is extremely important in determining accurate settings of ferilizer application equipment.
What is the density of DAP fertilizer?
Diammonium phosphateNamesDensity1.619 g/cm3Melting point155 °C (311 °F; 428 K) decomposesSolubility in water57.5 g/100 mL (10 °C) 106.7 g/100 mL (70 °C)Solubilityinsoluble in alcohol, acetone and liquid ammonia31 more rows
How do you calculate fertilizer units?
Calculation A Amount of fertiliser kg/ha = kg/ha nutrient ÷ % nutrient in fertiliser x 100. Example: You need 20 units (kg) /ha of phosphorus (P) and you plan to use single superphosphate with 8.8% P.
What is the density of granular fertilizer?
The bulk density of and of granular urea investigated was 0.76 ± 0.0011 g/m 3 at moisture content of 18.7% granular urea Table 5 and the hundred particles weight of urea was 0.8 ± 0.6 at 18.7% moisture content of urea (Table 6) fertilizer mass (weight) of hundred particles.
What is the density of urea?
1.32 g/cm³Urea / DensityUrea appears as solid odorless white crystals or pellets. Density 1.335 g /cc.
What is the weight of fertilizer?
Liquid:Liquid:1 gallon 28% (28-0-0)=10.66 lbs.1 gallon 10-34-0=11.65 lbs.1 gallon 7-21-7=11.00 lbs.1 gallon 9-18-9)=11.11 lbs.1 more row
How is NPK measured?
To determine a fertilizer ratio for a recommendation of 1.5 lb of nitrogen, 0.5 lb of phosphate, and 0.5 lb of potash, divide the weight of each of the three nutrients (1.5 lb, 0.5 lb, 0.5 lb) by the nutrient with the lowest weight (0.5 lb). Thus, the fertilizer ratio that best fits this recommendation is 3-1-1.
How do you measure fertilizer bags?
1:021:54How to Calculate Fertilizer Application Rates - YouTubeYouTubeStart of suggested clipEnd of suggested clipThis will give us the amount of fertilizer by weight that we need to cover 1,000 square feet of turfMoreThis will give us the amount of fertilizer by weight that we need to cover 1,000 square feet of turf. So take one pound divided by 0.2 two and you get 4.5 4 pounds of 2200. Per thousand square feet.
What is NPK fertilizer ratio?
Prominently featured, the N-P-K-ratio is the percentage the product contains by volume of nitrogen (chemical symbol N), phosphorus (P), and potassium (K). A 16-16-16 fertilizer, for example, contains 16% nitrogen, 16% phosphorus, and 16% potassium.
What is the density of Nitrogen fertilizer?
Across years and planting densities, the average NUE was ranked in the following order: 44.4 kg kg-1 for N180 > 41.8 kg kg-1 for N360 > 32.5 kg kg-1 for N0. The AEN and PFPN in N180 were 24.7 and 63.0 kg kg-1, respectively, which displayed significant increases of 96 and 99%, respectively, compared to N360 (Table 2).
How do you analyze fertilizer?
All fertilizer labels have three bold numbers. The first number is the amount of nitrogen (N), the second number is the amount of phosphate (P2O5) and the third number is the amount of potash (K2O). These three numbers represent the primary nutrients (nitrogen(N) - phosphorus(P) - potassium(K)).
What does 32 liquid fertilizer weigh?
11.06 pounds per gallonThirty-two percent UAN (32-0-0) weighs 11.06 pounds per gallon and salts out (solids separate from the liquid) at 32°F. Twenty-eight percent (28-0-0-5) contains 5 percent sulfur in addition to the nitrogen. You can use it where you expect a response to sulfur, such as on sandy textured, low organic matter soils.
How are the physical properties of fertilizer determined?
The physical properties of a fertilizer are determined by its chemical composition and how it is produced. An understanding of product properties is useful for handling, storage and spreading of fertilizer.
What is the critical humidity of fertilizer?
Typically, a water absorption curve ascends slowly at low humidity (as illustrated), but at a certain humidity or humidity range it starts to increase steeply. This humidity is called the critical humidity of the fertilizer. The critical humidity goes down when the temperature increases.
What is the relative humidity of water?
The water content is expressed by the relative humidity (RH). When the air is saturated with water vapour the relative humidity is 100 % and 50 % RH if half saturated. Water vapour will move from both high to low water vapour pressure. At 30˚C the air can contain 30.4 g of water pr m3 (100 % RH).
Why do fertilizers sinter?
Most fertilizers tend to sinter or cake during storage. Such caking arises due to the formation of strong crystal bridges and adhesive forces between granules. Several mechanisms can be involved; those of most importance seem to be: Chemical reactions in the finished product.
What is bulk density?
Bulk density or volume weight (kg/m3) differs between fertilizer types. Variations in particle distribution due to segregation will influence the bulk density. For mechanical spreading it is important that variations within a specific product are minimal.
What is compatibility in fertilizer?
Compatibility primarily relates to blending of different fertilizers, cross contamination and other problems in safety and/or quality; e.g. caking, weakening, dust formation, and loss of resistance to thermal cycling in the case of ammonium nitrate.
Why is particle size distribution important?
The particle size distribution is important for spreading properties and segregation tendencies. It is especially important if the component is in bulk blends.
What are the physical properties of fertilizer?
In order of importance, the physical properties that impact the quality of fertilizer granular spread are: particle size, particle density, bulk density, particle shape, crushing strength, flowability and coefficient of friction.
Why is it important to understand the physical properties of fertilizer?
It is important that spreader operators or managers understand fertilizer physical properties since these control the ballistic nature and particle trajectories of different fertilizers. Improper setup or handling of fertilizer can lead to uneven spread patterns that can greatly affect crop growth and yield.
What is the D50 in fertilizer?
d50 is the median particle size for a fertilizer sample or load and the most common metric to report particle size. Units are usually reported in millimeters by most fertilizer manufacturers. SGN (Size Guide Number) values report on the average (not median) particle size multiplied by 100.
What is the impact of particle size on fertilizer spread?
Particle size has an exponential impact on spread width and to the risk of product segregation. In general, larger particles are thrown further by a spreader than smaller particles.
Why is fertilizer source important?
Fertilizer source is also important because nutrient concentration may vary, as can the physical properties of granular material (s) which affect delivery and deposition onto a field. All the variables listed in Figure 1 should be considered by operators before and during application. Although all are important, ...
What factors affect the particle size of fertilizer?
Particle size of fertilizers can be impacted by many factors including transportation, conveyance, handling and metering.
How does transporting and spreading affect particle size?
Storing, transporting and spreading can all affect particle density and particle size of a granular fertilizer Crushing induced variability in these physical properties may increase more in blended than single fertilizers, and problems with fines and dust can occur.
What is buildup on measurement surfaces?
Buildup on measurement surfaces can often cause zero shifts and will ultimately affect the accuracy of the measurement system if not properly attended to. Buildup can cause additional concerns such as undue wear or equipment failure, especially if the product being measured is corrosive in nature.
What is a Coriolis meter?
Coriolis meters are one type of dynamic flow meter that utilizes spinning mechanisms that change torque as product passes through it. This change in torque is then processed as mass flow. Coriolis based mass flow meters are generally quite accurate.
Can flow meters be installed in process?
These meters typically have a small vertical footprint, can be installed nearly anywhere in a process, and are a great choice for nearly any “in process” installation where accuracy is paramount. Choosing the correct measurement technology is crucial to the success of any flow measurement installation.
Is a static weigh scale accurate?
For static product that is no longer in process (product in silos, trucks, railcars, etc.), static weigh scales or truck scales are certainly an option as they can be quite accurate.
Is a flow meter cheap?
While the upfront cost of a flow meter may be quite low, low accuracy or high maintenance costs can make a “cheap” meter very expensive. Conversely, a seemingly expensive meter may be extremely accurate and have extremely low maintenance and repair costs and so may actually be quite inexpensive in the long run.
