Software
Houzz Logo Print
lincann

Understanding soil testing results

12 years ago

For past 5 years, I've only used Espoma products, home-made compost, leaves in fall, cm, sbm and alfalfa pellets on all my beds and lawn ~ nothing artificial and no pesticides/herbicides.

Seems like everything starts off ok each spring, but by mid-summer all looks tired in spite of good care. Bloom is down and last year a whole back bed of Shasta daisies and larkspur died altogether.

I had soil testing done a year ago, but never acted on the suggestions because I wasn't sure how to do so without using chemical fertilizers. Can you help me figure this out?

Testing was done through A & L Analytical Labs.
Method used: M3

Front flower bed:
5 years old - small tree/shrubs/perennials

Soil pH: 7.1
P: 15 ppm
K: 45ppm
Ca: 1,472 ppm
Mg: 140 ppm
Organic matter (Loi) 14.2% ENR 328
Suggested:1 lb nitrogen per 1000 sq ft 4 times year,
1/2 lb P in spring and fall and 5 lbs K - 1 in fall and rest
over growing season.

Back flower bed:
30 years old - shrubs/perennials/annuals used chemical fertilizer until 5 years ago

Soil pH: 7.0
P: 167 ppm
K: 187 ppm
Ca: 2656 ppm
Mg: 402 ppm
Organic matter: 13.5% ENR 314
Suggested: 1 lb nitrogen (per 1000 sq ft) 4 times year,no P
and 2 lbs K ( ") in fall and over growing season

Q: Do I have too much organic matter?

Q: Would it help to use higher nitrogen like blood meal or SBM and more frequently?

Q; What is my best source of organic P & K

Q: Is the yellowing of leaves due to too much calcium making iron unavailable to plants?

Help ! Thanks.