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What form of nitrogen will be best for plants?

The best form of nitrogen for plants is compost. It's among the least concentrated forms of "nitrogen as fertilizer" and that's a good thing, as concentrated nitrogen is not a normal thing ...
Ecnerwal's user avatar
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Available (soluble?) vs. total phosphorus for seed starting

Before we can answer, we may need some terminology and how fertilizers are used. Let's start with fields (agriculture), which was the initial push for chemical fertilizers (note: it works also with ...
Giacomo Catenazzi's user avatar

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