Case study · Banana · Nursery development

Stronger Starts in Banana Nurseries: Evergreen + ZinX Trial Results

A nursery trial evaluated how Evergreen and ZinX affected root development, shoot biomass, leaf development and pseudostem growth in young banana plants.

+84%
Shoot weight
19.67 g vs 10.67 g
+58%
Root weight
10.00 g vs 6.33 g
+69%
Leaf area
152.70 cm² vs 90.14 cm²
+150%
Pseudostem girth
21.67 cm vs 8.67 cm

Evergreen 2.5 cc/L + ZinX 2.5 cc/L compared with the Crop Giant treatment under the reported trial conditions. Values are treatment means as reported.

01 — The nursery challenge

Strong planting material begins before the plants ever reach the field.

For banana producers, nursery development influences the quality and uniformity of the plants being prepared for transplanting. Foliar application during the nursery stage provides readily available nutrients that support early vegetative growth, seedling vigor, root and leaf development, and uniform establishment before field transplanting.

Banana nursery plants growing in polybags
02 — The trial

Four treatments, eight weeks of observation

Young banana plants received one of four foliar programs. The plants were photographed weekly from week 2 to week 8.

Comparison

Crop Giant

Treatment

Evergreen 2.5 cc/L

Treatment

ZinX 2.5 cc/L

Combination

Evergreen 2.5 cc/L + ZinX 2.5 cc/L

Four banana nursery treatments photographed from week 2 through week 8

Photographs from the trial report, weeks 2 to 8. The labeled grid combines the individual source photographs.

03 — What was measured

Eight indicators of nursery development

Shoot weight
Root weight
Functional leaves
Pseudostem girth
Leaf length
Leaf width
Leaf area
Chlorophyll content
04 — The results

Evergreen + ZinX increased all eight measured characteristics versus Crop Giant

Shoot weight (g)+84.38%
Crop Giant
10.67
Evergreen
12.67
ZinX
9.67
Evergreen + ZinX
19.67
Root weight (g)+57.89%
Crop Giant
6.33
Evergreen
8.67
ZinX
6.00
Evergreen + ZinX
10.00
Functional leaves+23.08%
Crop Giant
4.33
Evergreen
4.67
ZinX
4.33
Evergreen + ZinX
5.33
Pseudostem girth (cm)+149.94%
Crop Giant
8.67
Evergreen
12.67
ZinX
11.67
Evergreen + ZinX
21.67
Leaf developmentCrop GiantEvergreenZinXEvergreen + ZinXvs Crop Giant
Leaf length (cm)15.3316.6714.3320.00+30.43%
Leaf width (cm)7.337.676.509.50+29.60%
Leaf area (cm²)90.14102.9374.80152.70+69.40%
Chlorophyll content43.0752.9358.1357.90+34.44%

Treatment means as reported. Percentages compare Evergreen 2.5 cc/L + ZinX 2.5 cc/L with the Crop Giant treatment.

05 — Look below the surface

The difference wasn't only above ground.

Root systems of the four banana nursery treatments
Crop GiantEvergreenZinXEvergreen + ZinX
The combination treatment recorded 10.00 g of root weight compared with 6.33 g in the Crop Giant treatment—a 57.89% increase under trial conditions.
06 — More canopy development

Larger, longer leaves in the combination treatment

Leaf comparison across the four banana nursery treatments
Crop GiantEvergreenZinXEvergreen + ZinX
The Evergreen + ZinX combination recorded 152.70 cm² of leaf area compared with 90.14 cm² in the Crop Giant treatment.
07 — The ExcelAg perspective
Better nursery programs aren't about one measurement. They're about developing stronger, more uniform planting material across the plant—from roots to leaves.
ExcelAg technical team
Plant nutrition · Nursery programs

Talk to an ExcelAg specialist about banana nutrition programs.

Trial facts
Treatment: Evergreen 2.5 cc/L + ZinX 2.5 cc/L, foliar
Comparison: Crop Giant treatment
Crop: Banana, nursery stage
Observation: Weeks 2 through 8
Products used: Evergreen and ZinX
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