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Santa Cruz, CA

         9/06/06 Soils test 03/01/06 Soils test        
Organic Matter            7.5         6.8
Nitrogen            32         7
Phosphorus (WB)         191         125
Phosphorus (NaHCO3P)     88         121
Potassium            325         418
Magnesium            234         241
Calcium             1588         2081
Sodium             49         32    
Sulfur                 47         95
Zinc             45.2         24
Manganesse             5         2
Iron                 60         36    
Copper             3.3         1.3
Boron                 2.0         1.5

Percent Cation Saturation    
Potassium            6.9        7.8
Magnesium            16.1        14.4
Calcium             66.2        75.3
Sodium             1.8         1.0

ECe                 1.0        .05

CEC                 12.        13.8

Ph                 6.4        6.9

We'd love to have some advice as to what to amend the patch with this Fall. We have 3,000 square feet to work with. Thanks for the help! -Kristine

11/2/2006 1:16:16 AM

Ctpumpkin@optonline.net

50 lbs Calcitic limestone (aka Hi-Cal or low Mag non-dolomitic)
150 lbs Gypsum
4-5 inches of old rotten manure

11/3/2006 12:20:38 AM

Santa Cruz, CA

Thanks so much for the help!!! It rained today but we will get to work soon.

11/3/2006 1:24:15 AM

Phoenix, AZ

Your Iron/Manganese ration is high. I would add a few ppm of Mn to try and even it out. In my case, with OM higher than you and a ratio better than yours, I still have Mn deficiencies because it gets locked up.

11/3/2006 7:54:26 AM

Ctpumpkin@optonline.net

Hence I didn't mention the Mn....LOL....Hopefully the manure will bring some along. Every time I've added Manganese to deficient soils we've failed to correct the problem. Oxides, Sucrates, etc have all ended up locked again even when applied at 7-15 times the prescribed rates.

Usually the most practical solution to an Mn deficiency is to make light frequent foliar solutions (chelated) during periods of rapid growth.

Plus I don't believe that few yellow spots on leaves has ever cost anyone the season. LOL....Tragically the radical attempts to CORRECT silly yellow spots have cost many growers the entire season.

Many a record fruit has been grown on Iron or Manganese deficient soil too.

11/3/2006 9:57:15 AM