We’re seeing some leaf yellowing and curling in the cabbages and cauliflowers. Possible causes include iron deficiency, nitrogen deficiency, and “yellows”. Iron deficiency doesn’t seem likely given the number of rusty nails we’ve found. “Yellows” are often associated with excess nitrogen, which is unlikely given the volume of green leaves that the broccoli, brussel sprouts, cabbage, cauliflower, rutabagas, and swedes have put out since the last fertilizer treatment two months ago.
And so a soil test is in order. We sampled four places in the brassica patch, and combined them:
Location |
Area |
pH |
N |
P |
K |
Elements |
Fertilizer |
Amendments |
Brassica patch |
50 sq ft |
not tested |
0/Depleted |
0.5/Depleted |
3/Sufficient |
2.3 oz N plus 1.8 oz P. |
11 ozs 16-16-16 plus 2 ozs 26-3-4 sprinkled along soaker hose. |
none |
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