Trial Results: YaraLiva CN-9 Storage and Quality Study by CSU

Yara has conducted a study in partnership with the Colorado State University with the objective of evaluating the impact of available calcium and nitrate nitrogen from YaraLiva® CN-9® on yield, packout weight, and storage quality in potatoes in the San Luis Valley of Colorado.

Here are some of the key findings:

Packout percentages in YaraLiva CN-9 treatment were improved compared to grower standard practice amounting to a $162/acre value.

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Harvested tubers from YaraLiva CN-9 treatment had improved storability at 3 and 6 months in storage.

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Impact of CN-9 on quality in storage

  • YaraLiva CN-9 improved storability in a simulated pile at 3 and 6 months, leading to reduced dry and wet rot, reduced bruising, and increased peak load/reduced susceptibility to pressure bruise.
  • Tubers were analyzed for pressure bruise, shrink, and rot in a simulated pile. Samples were placed in the crib and cushioned with other russet tubers. Pile pressure was applied to the sample tubers using a water tank. Empty, half full, and full tanks were placed in cribs to induce pile pressure. Samples were analyzed after 3 and 6 months.

Nutrient content was also improved in the YaraLiva CN-9 treatment compared to the grower standard.

  • Peel content of P, K, Zn, Fe, Mn, Cu was higher
  • Tuber content of Zn, Fe, Mn, Cu, and B was higher

Spoon feeding YaraLiva CN-9 beginning at tuber initiation and throughout the season provided a predictable and available source of nitrogen and a consistent source of available calcium. This can lead to healthier, more robust plants and healthier roots, particularly under heat stress - improving plant and root vigor, nutrient uptake, and movement from leaves and stems to tubers.

Study Basic Information

  • Target crop: potato
  • Variety: Russet Norkotah 278
  • Location: Monte Vista, CO
  • Product: YaraLiva CN-9
  • Trial date: 2021
  • Researcher: Dr. Sastry Jayanty, Colorado State University

Treatment

Product

Rate

Timing

Grower Standard

UAN28

To meet N needs of crop

Spoon-fed through pivot. N balanced with Yara treatment.

Yara

YaraLiva CN-9

 

UAN28

68 gpa

 

To balance N with control

Applied starting at TI and spoon-fed through pivot.


N balanced with control.

 

Contact your Yara representative to learn more about this trial and discuss how to incorporate YaraLiva CN-9 into your crop's fertility program.

Erika Wagner
Agronomy Solutions Manager
(208) 617-0060
Ally Latham
Sales Agronomist

Southeast Arizona, Colorado, New Mexico, Nebraska Panhandle 

(806) 672-2321
Neil Iverson
Sales Agronomist

Red River Valley of Minnesota, North Dakota

(218) 779-2089