Tips for sampling

• Sample the correct part of the plant at the correct growth stage
• Always wear gloves to avoid contamination
• Regular tests build better profile
• Be consistent in obtaining your representative sample, sample plants of similar vigour, variety, size and age
• Sample early in the week; if storing samples over the weekend, dry or refrigerate
• Use stainless steel cutting implements

Things to avoid when sampling

• Spoiled, diseased, insect damaged, senescing or dead plant tissue
• Unusual areas in the paddock which can include poorly drained soils, sheep camps, headlands etc
• Areas of crops/pastures in the immediate vicinity of trees
• Don’t sample plants under moisture stress and avoid waterlogging
• Plants growing in dung or urine patches
• Sampling soon after soil or foliar fertiliser application
• Contamination from dust, soil, sprays, fertilisers and your hands (Always wear gloves to avoid contamination
• Avoid touching fenceposts or any other object that may contaminate your sample
• Plastic bags. Instead, use APAL’s paper bags

How to take the sample

• Review your required tests. If guidance is required consult APAL or your local agronomist
• Determine an appropriate sampling plan
• Ensure a representative sample is obtained
• Avoid unusual areas listed above
• When troubleshooting, take samples from good and poor growth areas for comparison
• Ensure the correct part of the plant is sampled
• Collect the desired amount of leaves or petioles (generally aim to fill 1/2 to 2/3 APAL's plant tissue bags)

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