Demonstration at a commercial grower · October–November 2024

AWA® in
lettuce.

Iceberg lettuce grown with AWA® on newly cultivated land, initially intended to be incorporated into the soil as organic matter, reached a marketable size.

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Lettuce: crop featured in the AWA® report
Lettuce · October–November 2024

From green manure to harvest

Marketable

On newly cultivated land with low organic matter

Shared schedule

Same irrigation

45 minutes per session, four sessions per week

Planted to be ploughed in. Harvested to be sold.

THE CROP AND ITS MANAGEMENT

The starting point.

Sector with AWA®
Previously uncultivated land with poorly developed structure and low organic matter.
Control sector
Worked and prepared plot with good structure and organic matter.
Crop programme
Planned duration: ten weeks; 65,000 plants per hectare.
Irrigation
Four 45-minute sessions per week in both sectors.

MONITORING RESULTS

The data,
in context.

At 15 cm

Mean matric tension · kPa

At 30 cm

Mean matric tension · kPa

Mean volumetric water content · 15 cm

% · depth of 15 cm

Mean volumetric water content · 30 cm

% · depth of 30 cm

Mean volumetric water content · 45 cm

% · depth of 45 cm
Initial condition
Initial conditionControlAWA®
Land preparationWorked and prepared plotPreviously uncultivated land
StructureGoodPoorly developed
Organic matterGoodLow

Crop outcome with AWA®

The lettuce was planted with the intention of incorporating it into the soil, as it was not expected to reach a marketable size. During cultivation with AWA® it reached a marketable size.

Crop programme

Planned ten-week cycle and a density of 65,000 plants/ha. Both sectors received four 45-minute irrigations per week.

Water and fertilisation

Estimated scheduled volume: 1,650 m³/ha over ten weeks. Fertilisation: 93 fertiliser units of nitrogen, 36 of phosphorus, 75 of potassium and 72 of calcium.

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FROM THE FIELD TO YOUR CROP

Let’s look at what
your farm needs.

Tell us about your growing area, soil type and irrigation system. Our team will help you incorporate AWA® into your programme and draw on its field experience.

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