Nursery, Greenhouse and Plant Tissue

Foliar Nutrient Analysis

You might be interested in the service if you:

  • are trying to maximize your nutrient management program,
  • are an orchardist,
  • are an arborist caring for trees,
  • are a golf course superintendent.

How you need to prepare the sample before submission. Instructions on sample submission

Its best to contact the lab before submitting your sample to find out how to collect a proper sample. Different plants require different sampling techniques. Also, foliar and plant tissue samples degrade quickly and samples can get infected with mould. Therefore, samples need to be submitted as quickly as possible.

What happens to your sample after we receive it.  Analytical Methods and Technical Information.

If the samples are not dry, we dry them before we do anything else. Then we grind and sieve the sample the sample is then split into to two smaller samples with the first getting digested in acid and then run through an ICP-AES (Inductively Coupled Plasma-Atomic Emissions Spectrometer), which measures elements such as P, K, Mg, Ca etc. The second sub-sample is combusted in a LECO CNS-2000 and the gases are analysed for carbon, nitrogen and sulfur.

Contact

Lakehead University Forest  Laboratory
807-343-8639
forestlab@lakeheadu.ca

Growing Media Nutrient Analysis and Water Holding Capacity

You might be interested in the service if you:

Are a nursery grower and need to trouble shoot media problems

Where samples typically come from

  • Growing media
  • Soilless mixes

How you need to prepare the sample before submission. Instructions on sample submission

Send or drop off dry sample of growing media. Samples should be about 500 ml (2 cups) of gently packed media. You can submit your sample in a clean plastic container or large freezer bag. No other preparation on your behalf is required. For your convenience, feel free to download and print the sample submission form. Then simply attach the completed form to your sample when submitting.

What happens to your sample after we receive it. Analytical Methods and Technical Information.

The first step in the analysis of your growing media is to saturate it with distilled water. At this point we can calculate the water holding capacity. We then take the saturated media and perform a vacuum extraction to collect the leachate (the water that is drained from the media). We then analyze the leachate by autoanalyzer (for ammonium, nitrate) and ICP-AES (for all other elements).

Lakehead University Forest  Laboratory
807-343-8639
forestlab@lakeheadu.ca

Plant Tissue Analysis (General and Green House and Nursery Stock)

You might be interested in the service if you:

  • are trying to maximize your nutrient management program,
  • are an orchardist,
  • are an arborist caring for trees,
  • are a golf course superintendent.

How you need to prepare the sample before submission. Instructions on sample submission

Its best to contact the lab before submitting your sample to find out how to collect a proper sample. Different plants require different sampling techniques. Also, foliar and plant tissue samples degrade quickly and samples can get infected with mould. Therefore, samples need to be submitted as quickly as possible.

What happens to your sample after we receive it.  Analytical Methods and Technical Information.

If the samples are not dry, we dry them before we do anything else. Then we grind and sieve the sample the sample is then split into to two smaller samples with the first getting digested in acid and then run through an ICP-AES (Inductively Coupled Plasma-Atomic Emissions Spectrometer), which measures elements such as P, K, Mg, Ca etc. The second sub-sample is combusted in a LECO CNS-2000 and the gases are analysed for carbon, nitrogen and sulphur.