United SUpplierS, inc.
25-0-0 Plus 0.5% Boron
28-0-0
Analysis What are the various forms of N and their concentrations contained within the two formulations? How much boron is contained within the SRN formulations? How much nitrogen is delivered as slow release? How many lbs of slow release nitrogen is delivered/gallon
When is the ideal time to use SRN25B and SRN28?
What role does boron play?
Are these products safe to apply to a plant as a foliar fertilizer?
SRN28 28% Total nitrogen 7.8% N in the urea form 20.2% N in a slow release methylene urea form Total N = 28% 1 gallon contains 3.0 lbs of N 0.0% boron 1 gallon contains 0.0 lbs of boron
SRN25B 25% Total nitrogen, 0.5% boron 18.8 % N in the urea form 6.2% N in the slow release methylene urea form Total N = 25% 1 gallon contains 2.5 lbs of N 0.5% boron 1 gallon contains 0.05 lbs of boron
72% of the formulation is in a slow release form 25% of the formulation is in a slow release form 2.16 lbs
0.63 lbs
In early to mid vegetative growth stage; when environmental conditions have knowingly caused substantial nitrogen loss. When a prolonged release of nitrogen is important. Top dress for small grains.
Mid-vegetative thru reproductive growth stages. When prolonged or slow release of nitrogen is not as important.
No boron available
Boron is a micronutrient that is involved in various plant functions such as cell wall structure, cell division, sugar transport, flower and fruiting, and plant hormone regulation. Boron requirements are much higher for reproductive growth and can increase flower production, seed and fruit development.
SRN28 has an extremely high crop tolerance value
SRN25B has a moderately high level of crop tolerance value.
Q: What are the 4R’s and how do they relate to the SRN formulations? • The 4R’s are part of the IPNI (International Plant Nutrition Institutes) effort to improve fertilizer management practices in the industry. The 4R nutrient stewardship program is an innovative approach with a simple concept – apply the Right source of nutrient, at the Right rate, at the Right time, and the Right place. The concept is simple but the implementation takes a great deal of intensive and site specific knowledge. • In regards to the SRN formulations: Right Source: Both formulations contain a slow release form of urea (methylene urea) and un-reacted urea (quick release). Allowing the grower to apply a suitable nitrogen source directly to the crop foliage for immediate uptake while minimizing the occurrence of nitrogen burn, and the lost of N due to various environmental conditions as compared to other sources, such as straight urea. Right Rate: As a foliar product with a broad rate range (1-5 gal/acre), both SRN formulations provide the grower a great deal of flexibility to match the immediate needs of the crop to the situation. Right Time: As a foliar formulation both SRN28 and SRN25B allow the grower flexibility to supplement his crop’s nitrogen (and boron) needs at almost any time during the plants life cycle. Right Place: Again these foliar formulations allow the grower to deliver a nitrogen (and boron) source directly to the crops foliage for almost immediate absorption and translocation.
Q: What time of day is most favorable for foliar application? • Favorable conditions are generally early to mid-morning or in the late afternoon through early evening, when temperatures are lower and stomates are more readily open. • Unfavorable conditions are generally mid-day through afternoon, when temperatures are over 85° with relative humidity greater than 70%. These conditions make it more difficult for uptake and can increase potential for foliar burn. Q: How long is the slow release period? • The time period for a slow release fertilizer is relative to the percent of slow release nitrogen (methylene urea) and un-reacted urea contained within the formulations. This time period is affected by temperature and other environmental factors also. Both SRN formulations are considered slow release nitrogen fertilizer. Under typical environmental conditions these formulations will release nitrogen over a 1 to 4 week period. • SRN28 has 72% methylene urea and will release nitrogen slower and more evenly over a measured period of time. • SRN25B has 25% methylene urea and will release nitrogen earlier and faster over the same measured period of time. • Depending on the situation and strategies the dealer can utilize these formulations to meet the needs of their customers. Continued on back
United Suppliers, Inc. “Increasing Our Owners’ Capabilities & Competitiveness”
Q: Which method of application is most effective: ground or aerial?
Q: Which crop stage is most favorable for SRN28 and SRN25B responses?
• Ground application is more precise and results in less off-target spray, but aerial is preferred during later stages of growth. Spray control can be greatly improved under low wind speeds and addition of deposition agents to the spray tank.
• Consult the label for recommended timing and rate guidelines. Both SRN products are flexible and can be applied over a wide variety of crops and growth stages. SRN28 due to its higher levels of nitrogen and higher concentration of slow release nitrogen is generally better suited for early to mid-vegetative stages of growth. SRN25B due to its boron content and lower levels of slow release nitrogen is generally better suited for mid-vegetative thru reproductive stages of growth.
• If the SRN products are going to be applied in combination with a fungicide aerially include Downdraft in the mixture. Q: Are SRN28 and SRN25B effective when applied through center pivot irrigation? • Application through center pivot irrigation is not recommended. Through this system the material is not retained on the leaf surface long enough for absorption. • Both SRN28 and SRN25B are both well suited for use in drip irrigation situations.
• Some selected crops and timing recommendations for SRN28 and SRN25B:
Corn; V5-V8, and again during R1-R3 Soybeans; 1st sign of bloom through R3 Wheat; 1st node( Feekes 5-6), and again at boot through flowering See label for additional crops
Q: What are the precautions when foliar spraying SRN28 and SRN25B?
Q: Is the boron contained in SRN25B sufficient to meet the needs for the crop? Corn, Cotton, Alfalfa, etc
• When temperature + relative humidity exceed 150-160 the potential for leaf burn along the outside leaf margins and tips increases. Recovery from slight to moderate leaf burn is good to excellent during vegetative growth stages with little or no yield loss, especially if growing conditions are favorable following the leaf burn event.
• Corn: The amount of boron removed in the grain by a 150 bu corn crop is approximately 0.1 lbs/acre. SRN25B is designed to help supplement the needs of a crop. Managing levels of boron should include soil applications along with considerations to supplement the plants needs with foliar treatments. A critical time for boron demand is during a plants reproductive stages of growth, thus a post-emergence application of SRN25B is a great way to deliver this nutrient to the plant. SRN28 contains no boron; however this material can be mixed with boron fertilizer.
• With SRN25B, caution should be used when applying with mixtures that include high rates of AMS and COC adjuvants, especially during reproductive growth stages and when temperature + relative humidity exceed 150-160. These mixtures can cause an increase in nitrogen leaf burn potential. SRN28 will have less burn potential with these types of combinations and may be more appropriate if boron is not needed. • Avoid blends with other high salt fertilizers. • Avoid blending with highly acidic products, ie. sulfurics and phosphorics. • Always jar test for compatibility before blending with SRN28 and SRN25B. Q: What are the efficiency ranges of foliar SRN28 and SRN25B applications compared to soil applied nitrogen sources? • Research documentation suggest that foliar applied nitrogen efficiencies range from 2:1 to 4:1 over soil applied sources. This is dependent on temperature, relative humidity, soil moisture and crop growth stage. Under conditions where soil losses are minimal the efficiencies may be 1:1. • Foliar nitrogen applications perform best on adequately fertilized crops that aren’t adversely heat or moisture stressed. Foliar nitrogen applied as a “rescue” application may not always produce a desirable, economic crop response. Q: What are some common sense conditions for storage and handling? • Refer to the label for specifics, but always store in any clean poly, or stainless steel tank. Avoid adding to any poor quality mild steel or steel tanks. Do not allow SRN28 and SRN25B to freeze, store at temperatures between 35° and 90°F. Check condition of the SRN material if kept in storage longer than 6 months after delivery.
United Suppliers, Inc. 30473 260th St. Eldora, Iowa 50627 800-782-5123
28-0-0
• Cotton: Generally, has a high requirement for boron. SRN25B should not be used as a soul source to provide a cotton crop its boron needs. A common recommendation for boron in cotton is 0.1 lbs/acre applied 3-5 times per year. • Alfalfa: Requirement for boron is approximately 0.05 lbs/ton of hay. SRN25B should not be the only source utilized to provide a sufficient amount of boron to an alfalfa crop. Q: With the availability of both SRN28 and SRN25B what is the proper positioning of the two products? Timing, crop, any advantages? • Although both products offer great flexibility as to when they can be applied to many crops the following are some recommendations for each SRN formulation. • SRN28: Because it contains a higher load of nitrogen and higher levels of slow release nitrogen, this product is more suitable for early applications to corn and for top dress treatments to wheat. If the situation exists to where a foliar nitrogen fertilizer is desired and a producer is spraying high levels of AMS and COC materials in combination with herbicide and or fungicides; SRN28 is less likely to cause any burn as compared to SRN25B. SRN28 is the preferred product for turf applications. • SRN25B: Because of its lower levels of slow release nitrogen in its formulation and the addition of boron, this product is better suited for later applications during late vegetative thru reproductive stages of growth. At this stage of growth the plant has more foliage for plant interception and the need for slow release is not as critical. This is also a time when boron demand can be high for most crops.
25-0-0 Plus 0.5% Boron 050412 SRN25B and SRN28 are trademarks of United Suppliers, Inc.
28-0-0
Analysis What are the various forms of N and their concentrations contained within the two formulations? How much boron is contained within the SRN formulations? How much nitrogen is delivered as slow release? How many lbs of slow release nitrogen is delivered/gallon
When is the ideal time to use SRN25B and SRN28?
What role does boron play?
Are these products safe to apply to a plant as a foliar fertilizer?
SRN28 28% Total nitrogen 7.8% N in the urea form 20.2% N in a slow release methylene urea form Total N = 28% 1 gallon contains 3.0 lbs of N 0.0% boron 1 gallon contains 0.0 lbs of boron
SRN25B 25% Total nitrogen, 0.5% boron 18.8 % N in the urea form 6.2% N in the slow release methylene urea form Total N = 25% 1 gallon contains 2.5 lbs of N 0.5% boron 1 gallon contains 0.05 lbs of boron
72% of the formulation is in a slow release form 25% of the formulation is in a slow release form 2.16 lbs
0.63 lbs
In early to mid vegetative growth stage; when environmental conditions have knowingly caused substantial nitrogen loss. When a prolonged release of nitrogen is important. Top dress for small grains.
Mid-vegetative thru reproductive growth stages. When prolonged or slow release of nitrogen is not as important.
No boron available
Boron is a micronutrient that is involved in various plant functions such as cell wall structure, cell division, sugar transport, flower and fruiting, and plant hormone regulation. Boron requirements are much higher for reproductive growth and can increase flower production, seed and fruit development.
SRN28 has an extremely high crop tolerance value
SRN25B has a moderately high level of crop tolerance value.
Q: What are the 4R’s and how do they relate to the SRN formulations? • The 4R’s are part of the IPNI (International Plant Nutrition Institutes) effort to improve fertilizer management practices in the industry. The 4R nutrient stewardship program is an innovative approach with a simple concept – apply the Right source of nutrient, at the Right rate, at the Right time, and the Right place. The concept is simple but the implementation takes a great deal of intensive and site specific knowledge. • In regards to the SRN formulations: Right Source: Both formulations contain a slow release form of urea (methylene urea) and un-reacted urea (quick release). Allowing the grower to apply a suitable nitrogen source directly to the crop foliage for immediate uptake while minimizing the occurrence of nitrogen burn, and the lost of N due to various environmental conditions as compared to other sources, such as straight urea. Right Rate: As a foliar product with a broad rate range (1-5 gal/acre), both SRN formulations provide the grower a great deal of flexibility to match the immediate needs of the crop to the situation. Right Time: As a foliar formulation both SRN28 and SRN25B allow the grower flexibility to supplement his crop’s nitrogen (and boron) needs at almost any time during the plants life cycle. Right Place: Again these foliar formulations allow the grower to deliver a nitrogen (and boron) source directly to the crops foliage for almost immediate absorption and translocation.
Q: What time of day is most favorable for foliar application? • Favorable conditions are generally early to mid-morning or in the late afternoon through early evening, when temperatures are lower and stomates are more readily open. • Unfavorable conditions are generally mid-day through afternoon, when temperatures are over 85° with relative humidity greater than 70%. These conditions make it more difficult for uptake and can increase potential for foliar burn. Q: How long is the slow release period? • The time period for a slow release fertilizer is relative to the percent of slow release nitrogen (methylene urea) and un-reacted urea contained within the formulations. This time period is affected by temperature and other environmental factors also. Both SRN formulations are considered slow release nitrogen fertilizer. Under typical environmental conditions these formulations will release nitrogen over a 1 to 4 week period. • SRN28 has 72% methylene urea and will release nitrogen slower and more evenly over a measured period of time. • SRN25B has 25% methylene urea and will release nitrogen earlier and faster over the same measured period of time. • Depending on the situation and strategies the dealer can utilize these formulations to meet the needs of their customers. Continued on back
United Suppliers, Inc. “Increasing Our Owners’ Capabilities & Competitiveness”
Q: Which method of application is most effective: ground or aerial?
Q: Which crop stage is most favorable for SRN28 and SRN25B responses?
• Ground application is more precise and results in less off-target spray, but aerial is preferred during later stages of growth. Spray control can be greatly improved under low wind speeds and addition of deposition agents to the spray tank.
• Consult the label for recommended timing and rate guidelines. Both SRN products are flexible and can be applied over a wide variety of crops and growth stages. SRN28 due to its higher levels of nitrogen and higher concentration of slow release nitrogen is generally better suited for early to mid-vegetative stages of growth. SRN25B due to its boron content and lower levels of slow release nitrogen is generally better suited for mid-vegetative thru reproductive stages of growth.
• If the SRN products are going to be applied in combination with a fungicide aerially include Downdraft in the mixture. Q: Are SRN28 and SRN25B effective when applied through center pivot irrigation? • Application through center pivot irrigation is not recommended. Through this system the material is not retained on the leaf surface long enough for absorption. • Both SRN28 and SRN25B are both well suited for use in drip irrigation situations.
• Some selected crops and timing recommendations for SRN28 and SRN25B:
Corn; V5-V8, and again during R1-R3 Soybeans; 1st sign of bloom through R3 Wheat; 1st node( Feekes 5-6), and again at boot through flowering See label for additional crops
Q: What are the precautions when foliar spraying SRN28 and SRN25B?
Q: Is the boron contained in SRN25B sufficient to meet the needs for the crop? Corn, Cotton, Alfalfa, etc
• When temperature + relative humidity exceed 150-160 the potential for leaf burn along the outside leaf margins and tips increases. Recovery from slight to moderate leaf burn is good to excellent during vegetative growth stages with little or no yield loss, especially if growing conditions are favorable following the leaf burn event.
• Corn: The amount of boron removed in the grain by a 150 bu corn crop is approximately 0.1 lbs/acre. SRN25B is designed to help supplement the needs of a crop. Managing levels of boron should include soil applications along with considerations to supplement the plants needs with foliar treatments. A critical time for boron demand is during a plants reproductive stages of growth, thus a post-emergence application of SRN25B is a great way to deliver this nutrient to the plant. SRN28 contains no boron; however this material can be mixed with boron fertilizer.
• With SRN25B, caution should be used when applying with mixtures that include high rates of AMS and COC adjuvants, especially during reproductive growth stages and when temperature + relative humidity exceed 150-160. These mixtures can cause an increase in nitrogen leaf burn potential. SRN28 will have less burn potential with these types of combinations and may be more appropriate if boron is not needed. • Avoid blends with other high salt fertilizers. • Avoid blending with highly acidic products, ie. sulfurics and phosphorics. • Always jar test for compatibility before blending with SRN28 and SRN25B. Q: What are the efficiency ranges of foliar SRN28 and SRN25B applications compared to soil applied nitrogen sources? • Research documentation suggest that foliar applied nitrogen efficiencies range from 2:1 to 4:1 over soil applied sources. This is dependent on temperature, relative humidity, soil moisture and crop growth stage. Under conditions where soil losses are minimal the efficiencies may be 1:1. • Foliar nitrogen applications perform best on adequately fertilized crops that aren’t adversely heat or moisture stressed. Foliar nitrogen applied as a “rescue” application may not always produce a desirable, economic crop response. Q: What are some common sense conditions for storage and handling? • Refer to the label for specifics, but always store in any clean poly, or stainless steel tank. Avoid adding to any poor quality mild steel or steel tanks. Do not allow SRN28 and SRN25B to freeze, store at temperatures between 35° and 90°F. Check condition of the SRN material if kept in storage longer than 6 months after delivery.
United Suppliers, Inc. 30473 260th St. Eldora, Iowa 50627 800-782-5123
28-0-0
• Cotton: Generally, has a high requirement for boron. SRN25B should not be used as a soul source to provide a cotton crop its boron needs. A common recommendation for boron in cotton is 0.1 lbs/acre applied 3-5 times per year. • Alfalfa: Requirement for boron is approximately 0.05 lbs/ton of hay. SRN25B should not be the only source utilized to provide a sufficient amount of boron to an alfalfa crop. Q: With the availability of both SRN28 and SRN25B what is the proper positioning of the two products? Timing, crop, any advantages? • Although both products offer great flexibility as to when they can be applied to many crops the following are some recommendations for each SRN formulation. • SRN28: Because it contains a higher load of nitrogen and higher levels of slow release nitrogen, this product is more suitable for early applications to corn and for top dress treatments to wheat. If the situation exists to where a foliar nitrogen fertilizer is desired and a producer is spraying high levels of AMS and COC materials in combination with herbicide and or fungicides; SRN28 is less likely to cause any burn as compared to SRN25B. SRN28 is the preferred product for turf applications. • SRN25B: Because of its lower levels of slow release nitrogen in its formulation and the addition of boron, this product is better suited for later applications during late vegetative thru reproductive stages of growth. At this stage of growth the plant has more foliage for plant interception and the need for slow release is not as critical. This is also a time when boron demand can be high for most crops.
25-0-0 Plus 0.5% Boron 050412 SRN25B and SRN28 are trademarks of United Suppliers, Inc.
