Wednesday, February 10, 2010

Week 7: Nitrate

I applied another 10 kg/ha of nitrogen fertiliser this week in the wastewater, exactly the same as I did in week 4. But this time there was no jump in nitrate in the 20 cm detector. Since it rained a couple of days before I irrigated, I may have pushed the stored rain water into the detector, with the nitrate still sitting in the soil above it.

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