having had a quick look online prices vary from free stable grade if you collect to around £200 for organic in smallish amounts
as stable grade is often oil seed rape straw unless it can be gnt organic it might be full of herbicides from the pre harvest spraying municipal compost can be even worse for residues as there is nowt to stop folk adding recently "permanant"sprayed stuff to a green waste stream.this sort of thing can ruin veg beds.
If someone wanted to do localised water testing before and after a certain point to have evidence of manure contamination, what are we looking for? Nitrates? Ammonia? COD levels?
easy tests ,when you take the samples remember to rinse the clean bottles in the water you are sampling a few times to avoid adding anything you took with you in your bottles and wash your paws after as there will probably be plenty of coliforms you can share with both yourself and your critters.
if you can only do one bod would be the best to establish manure in the stream and tis easy to do if you have basic lab skills
either a meter with a dissolved o2 probe or a test kit for fish tanks will do a fairly good job
Nick
Joined: 02 Nov 2004 Posts: 34535 Location: Hereford
Posted: Tue May 12, 15 4:09 pm Post subject:
Funnily enough, BOD is the hardest one for me to do. Takes too long, anyway.
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