Is it? It'll take a while for fertilizer and sun placement to take visually effect, and there's risk that short term effects aren't indicative of long term effects.
How can you verify the recommendations are sound, valid, safe, complete, etc., without trying them out? And trying out unsound, invalid, unsafe, incomplete, etc., recommendations might result in dead plants in a couple of weeks.
How can you verify the recommendations are sound, valid, safe, complete, etc., without trying them out? And trying out unsound, invalid, unsafe, incomplete, etc., recommendations might result in dead plants in a couple of weeks.