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Roseville Soils Testing Annual Report: Year 1 <br />December 29, 2022 <br />Page 3 <br />Fertility: <br />Phosphorus <br />Minnesota Lab Olsen Test (ppm) <br />Site <br />Site Description <br />vegetation <br />management <br />10/15/2021 <br />6/13/2022 <br />10/10/2022 <br />1 <br />swale <br />native <br />23 <br />24 <br />32 <br />2 <br />swale edge <br />turf <br />22 <br />29 <br />48 <br />3 <br />top of berm - compost <br />native <br />14 <br />20 <br />28 <br />4 <br />top of berm - CONTROL <br />native <br />13 <br />11 <br />15 <br />5 <br />toe of slope - compost <br />turf <br />34 <br />35 <br />50+ <br />6 <br />toe of slope - CONTROL <br />turf <br />31 <br />35 <br />42 <br />Phosphorus values are considered low at 5 ppm and high at 20 ppm. <br />Potassium <br />Minnesota Lab Ammonium Acetate Extraction (ppm) <br />Site <br />Site Description <br />vegetation <br />management <br />10/15/2021 <br />6/13/2022 <br />10/10/2022 <br />1 <br />swale <br />native <br />163 <br />180 <br />77 <br />2 <br />swale edge <br />turf <br />245 <br />58 <br />63 <br />3 <br />1 top of berm - compost <br />native <br />1 128 <br />145 <br />182 <br />4 <br />top of berm - CONTROL <br />native <br />127 <br />112 <br />91 <br />5 <br />toe of slope - compost <br />turf <br />288 <br />267 <br />294 <br />6 <br />toe of slope - CONTROL <br />turf <br />300+ <br />200 <br />191 <br />Potassium values are considered low at 25 ppm and high at 175 ppm. <br />C:N Ratio <br />Nebraska Lab <br />Site <br />Site Description <br />vegetation <br />management <br />10/15/2021 <br />6/13/2022 <br />10/10/2022 <br />1 <br />swale <br />native <br />2 <br />swale edge <br />turf <br />3 <br />top of berm - compost <br />native <br />16.0 <br />15.2 <br />4 <br />top of berm - CONTROL <br />native <br />15.6 <br />16.1 <br />5 <br />toe of slope - compost <br />turf <br />7.7 <br />18.6 <br />6 <br />toe of slope - CONTROL <br />turf <br />1 6.3 <br />1 <br />1 17.3 <br />C:N Ratio is considered good if it is between 8 and 15. <br />Page 35 of 69 <br />