Amazone Fertilizer Spreader Settings & Calibration Guide

Master Calibration Matrix Reference

The following data represents standardized settings for common high-nitrogen fertilizers. These values serve as the starting point for machine configuration. Always cross-reference these with the specific serial number of your spreader discs.

Interpreting Disc and Vane Settings

The disc and vane configuration is the primary mechanical determinant of the spread pattern. The “OS” and “OM” designations refer to the specific geometry of the spreading vanes. The numerical values (e.g. 70/84) indicate the precise radial position of the vanes on the disc. Adjusting these positions alters the release point of the fertilizer, which directly dictates the throw distance and the overlap pattern. Incorrect vane positioning results in “striping” or uneven nutrient distribution across the field.

Digital Integration and mySpreader Workflow

Modern Amazone spreaders rely on the mySpreader App to bridge the gap between fertilizer chemistry and mechanical output. The database contains thousands of entries, each mapped to specific disc types and working widths.

Database Query Logic

Operators must first identify the fertilizer by name, grain diameter, and bulk density. If the specific product is not in the database, the system allows for manual input of these three parameters. The app then calculates the theoretical flow rate and disc speed. This data is transferred to the terminal, which creates a unique “Implement” profile.

Syncing Terminal Data to Hardware

Once the Implement is created in the terminal, the operator must ensure the physical machine matches the digital profile. This includes verifying the PTO speed (usually 540 or 720 RPM) and the physical gate opening settings. The terminal will prompt for a calibration test if the selected fertilizer has not been recently verified.

Calibration Factor Dynamics

The calibration factor is a multiplier that adjusts the theoretical flow rate to match the actual physical flow of the material.

The 0.7 to 1.4 Range Explained

A factor of 1.0 is the neutral baseline. Urea, which is lightweight and prone to wind drift, often requires a factor near 0.7. Conversely, heavy, dense PK fertilizers may require a factor of 1.4 to achieve the target mass flow. The terminal uses this factor to adjust the gate opening width in real-time.

Adjusting for Material Density

Bulk density is the weight of the fertilizer per unit volume. As density increases, the flow through the metering gate increases for a given opening size. The calibration factor compensates for this by narrowing or widening the gate to maintain the target kg/ha regardless of the product’s physical weight.

Physical Field Verification Procedures

Theoretical values from the app are insufficient for high-precision agriculture. Physical verification is mandatory.

Calibration Chute and Bucket Testing

1. Attach the calibration chute to the spreader.
2. Place the collection bucket under the discharge point.
3. Run the metering system for a set duration or distance.
4. Weigh the collected material using a calibrated scale.
5. Input the weight into the terminal. The system will automatically calculate the new calibration factor and update the application rate.

EasyCheck Tray Pattern Analysis

The EasyCheck system uses a series of mats placed at specific intervals across the working width. After a pass, the operator photographs the mats using the mySpreader App. The app analyzes the distribution pattern and suggests adjustments to the vane settings or disc speed to correct any identified imbalances.

Hardware Power and Flow Control

Automatic Calibration via FlowControl

On machines equipped with FlowControl, the spreader monitors the weight of the fertilizer in the hopper via load cells. It continuously compares the weight loss over time to the target application rate. If a discrepancy is detected, the system automatically adjusts the gate position to maintain the target rate without operator intervention.

Limiter and Boundary Management

The Limiter is a mechanical or hydraulic device used to restrict the spread pattern at field boundaries. It must be adjusted to ensure fertilizer does not enter watercourses or non-target areas. The Limiter position is stored in the terminal profile and should be checked before every field entry.

Environmental and Material Variables

Impact of Wind on Spread Pattern

Wind speed and direction significantly alter the effective working width. Even with the best settings, crosswinds will shift the pattern. Operators should reduce working width or adjust vane angles when wind speeds exceed 3m/s.

Fertilizer Quality and Grain Diameter

Fertilizer quality is not constant. Variations in grain size within a single batch can cause inconsistent flow. Always screen fertilizer for large clumps or debris before loading the hopper to prevent metering gate blockages.

Troubleshooting Spreader Performance

Identifying Uneven Distribution

If the field shows striping, the first step is to check the vane settings against the app. If the vanes are correct, perform a tray test. Often, the issue is not the machine, but the fertilizer quality (e.g. high dust content or uneven grain size).

When to Contact Fertiliser Service

If you have performed a 5kg lab test, verified your calibration factor, and still cannot achieve the target rate, contact the Amazone Fertiliser Service. They maintain a global database of proprietary fertilizer blends and can provide custom settings for products not found in the standard app.