Onions

Nitrogen is typically the most yield limiting factor for all crops. Applying nitrogen in onions supports vigorous vegetative growth and uniform bulb formation. N-Sure contains some of the nitrogen in the triazone is in the form of a ring structure that is slowly released through microbial activity.

A slow-release nitrogen solution that provides consistent N availability

• Sustains vegetative growth for uniform bulb development
• Reduces N loss compared to conventional urea-based fertilizers
• Compatible with foliar and fertigation programs
• Can be mixed with UAN solution to provide four different forms of nitrogen

For optimal onion growth, potassium is essential for bulb development, firmness, and disease resistance in onions. This nutrient is key for plant-water relations such as water and heat stress management and it also plays a key role in transporting sugars to the forming bulb. KTS and K-Row 23 are two potassium products that provide sulfur and potassium to support these key functions in onion for overall health, quality and yield.

KTS

A potassium thiosulfate solution that is highly available for balanced nutrition

• Highly soluble and chloride free
• Improves crop ability to cope with drought stress and effectively utilize nitrogen
• Improves phosphorus, calcium, and micronutrient availability in calcareous soils
• Blends easily with other liquid fertilizers including UAN and APP (see application guide for more information)
• When added to UAN solutions, can provide nitrification inhibition to prevent nitrogen loss

K-Row23

Add potassium and sulfur safely in-furrow and on low pH soils

• Highly soluble and chloride free
• Designed as a starter fertilizer for in-furrow applications
• Will not further acidify the soil, can be used on low pH soils

Having adequate calcium levels for an onion will result in better yield and improved storability. Calcium can often be abundant in soils but not always plant available. Applying a calcium in-season, typically after bulb initiation with a soluble source of calcium will ensure that the nutrient is there when the crop needs it to build strong cell walls.

CaTs is a 100% water-soluble calcium fertilizer that also has thiosulfate to provide essential sulfur nutrition. It can be applied through the irrigation water at critical growth and plant uptake times.

• Contains thiosulfate-based sulfur which helps soil calcium availability
• Improves cell wall strength and shelf life when applied at the peak calcium uptake
• When applied with urea fertilizers it can reduce NH₄ volatization losses
• Effective at leaching harmful salts

The aroma and flavor found when eating an onion is partly due to sulfur. Not only an important nutrient for flavor profiles, sulfur also influences yield and stress tolerance. Applying sulfur to an onion crop can be an important part of the program for enhancing nitrogen use efficiency and hitting yield and quality goals.

Thio-Sul is an excellent source of highly soluble sulfur. It blends easily with other fertilizers including UAN or other urea based fertilizers. It can help down nitrification and volatization in banded or broadcast applications. This can help reduce nitrogen loss while also providing sulfur.

• Can be used to target ideal N:S ratios when added to UAN blends
• Contains thiosulfate form of sulfur that helps improve nutrient availability such as P, Ca, and micronutrients (Fe, Zn, Mo, and Cu)

• Thio-Sul® - 12-0-0-26S
• KTS® - 0-0-25-17S
• K-Row 23® - 0-0-23-8S
• N-Sure® - 28-0-0