Solution for low phosphorus in soil - Ask Extension
I just got a report from the U of Delaware soil testing program, and the soil levels in the two gardens I tested are very low. They recommend triple ...
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Solution for low phosphorus in soil #890876
Asked December 17, 2024, 2:28 PM EST
I just got a report from the U of Delaware soil testing program, and the soil levels in the two gardens I tested are very low. They recommend triple superphosphate 0 - 46 - 0 to be worked into the top 4 - 6 inches of soil by spading or roto-tilling. The gardens are already partially planted and I don't have the resources to till the soil and am also reluctant to do so for general soil health. Plants in these gardens have struggled to thrive, and I'm sure they could use a phosporous boost. Do you have suggestions for non-tilling methods to increase phosphorous levels? Thanks
Howard County Maryland
Expert Response
Yes, you can just amend the soil surface with applications of phosphorus/phosphate fertilizer (as recommended by the lab), and soil life (earthworms, insects, millipedes, etc.) will gradually and naturally "till" it into the soil over time without disturbing roots. If you use mulch in that garden bed, move it aside where you apply the fertilizer, then put it back in place, to minimize the risk of erosion before the material is worked-in.
Miri
Miri
