Balancing Sugars, Boosting Grades: The Science Behind Damu in Tobacco

In tobacco production, quality is just as important as yield. Achieving uniform, well-developed leaves with good curing characteristics is vital for securing high market grades and better prices. Boron plays a critical role in this—but not all boron is created equal.

That’s where Damu, Levity Crop Science’s advanced boron formulation, comes in. Backed by Catalyst technology, Damu enhances boron uptake and mobility, directly improving leaf development, sugar transport, and curing quality.

Why Boron Matters in Tobacco

Boron is essential for: – Leaf expansion and strength – supports cell wall integrity and uniform lamina – Carbohydrate transport – moves sugars from source leaves (usually upper canopy) to sink tissues (middle and lower leaves) – Phenotypic uniformity – enables balanced development across the plant – Curing quality – improves burnability, colour and grade

In tobacco, achieving an even distribution of carbohydrates between upper, middle, and lower leaves is vital. Upper leaves tend to accumulate more sugars due to their high photosynthetic activity, but if boron is immobile or inadequately supplied, lower and middle leaves receive less, resulting in poor expansion, pale colour, and uneven curing.

The Damu Difference

Unlike conventional boron products, Damu is engineered with a biostimulant package that: – Accelerates foliar uptake – Enables phloem mobility, delivering boron—and with it, sugars—down the canopy – Balances carbohydrate partitioning from top to bottom leaves – Enhances leaf size and lamina structure, improving visual and physical quality – Supports even curing and phenotypic consistency.

This balanced sugar distribution ensures that lower and middle leaves develop as well as top leaves, helping all leaf grades achieve desirable curing characteristics.

South African Tobacco Trial Results

A 2023 field trial in Brits, North West Province, South Africa compared a single application of Damu (1.5 L/ha) to an untreated control.

Key Results Summary

Parameter
Control
Damu
Improvement
Leaf Area (avg.) 21,497mm2 25,975mm2 +17.5%
Leaf Weight (240 leaves) 4,020 g (16.75 g/leaf) 5,380 g (22.41 g/leaf) +33%

Leaf Grade

 L3JZ – R46.00/kg (US $2.44) L3R – R74.50/kg (US $3.95) +R28.50/kg (US $1.51/kg)

Yield/Ha (top 6 leaves)

 1,708.5 kg = R78,591 2,285 kg = R170,232 +R91,641/ha (US $4,855/ha)

Note: Currency conversion based on exchange rate of 1 ZAR = 0.053 USD at time of writing.

“These results reflect not only larger leaf development, but also greater uniformity between leaf positions — with more sugars reaching the lower canopy and ultimately translating into better cured grades.” Levity Agronomy Team.

Why Growers Are Switching to Damu

  • Works at low dose, high efficiency
  • Improves carbohydrate balance across the canopy
  • Enhances leaf expansion, uniformity, and curing potential
  • Boosts economic return per hectare
  • Minimizes risk of boron toxicity

By facilitating better sugar movement throughout the plant, Damu enables a superior phenotype with evenly developed leaves that cure more consistently—delivering quality that processors and buyers value.

Please contact us for more information about purchasing Damu

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