2026 Soil Sampling in Region 3 Soil sampling is an important component of properly ensuring that the soil health of agricultural systems is not depleted. In order to accomplish this, samples need to be taken at least every 5 acres. A minimum of 5 cores will be collected within 10 ft. of each sampling point. Samples will be taken in accordance with University of Illinois Agronomy Handbook standards (http://extension.cropsciences.illinois.edu/handbook/pdfs/chapter08.pdf).

The samples will be taken include the soil profile from 0-7 inches. No depths greater than 7 in is acceptable. Multiple profiles will be taken in each sampling location, mixed together, and put into a sampling bag that is labelled with Field number and sampling point. Sample ID numbers will be provided.

Samples will be sent off to the lab for analysis. The main levels that must be reported include soil pH, amount of Phosphorus (P), and amount of Potassium (K). Other micronutrients can be reported.

Please see attached Minimum Nutrient Level below on this sheet. The majority of the fields are in row crop production, but some may be in hay fields or food plots.

A final nutrient report for each lease and recommendations will be submitted electronically to the contact below. Soil sampling location points have been predetermined. Hard maps or a GIS shapefile will be given to the winning bidder when the project starts. A spreadsheet on how sample results will be delivered to IDNR. Sheet provided is minimum fields required as well as any additional information.

Samples will be taken in the fall – September to October timeframe, after fall harvest has been completed on the sites. All samples are required back November 1st, 2026. Farm Lease meetings will then be taking place in November and December for IDNR farm leases.

Vendor is responsible for taking all samples, having them analyzed, and sending to the IDNR via email to DNR.Aglease@Illinois.gov, Mike.Chandler@Illinois.gov, and Bob.Caveny@Illinois.gov.

Award shall be made to the compliant low bidder by line item. Each line will be awarded separately.

http://extension.cropsciences.illinois.edu/handbook/pdfs/chapter08.pdf mailto:DNR.Aglease@Illinois.gov mailto:Mike.Chandler@Illinois.gov mailto:Bob.Caveny@Illinois.gov

Location:

Region III Lease Number Site County Acres # of Sample Points

2081 Clinton Lake S.R.A. DeWitt 29.30 10 2101 Clinton Lake S.R.A. DeWitt 158.90 47 2280 Harry Babe Woodyard S.N.A. Vermilion 102.60 24 2395 Iroquois County S.F.W.A. Iroquois 83.20 26 2026 Moraine View S.P. McLean 216.20 60

IDNR Ag Lease - Min Soil Test Levels for Ag Fields Soil pH Maintenance Levels – 6.2 goal, 6.0 – 6.5 acceptable

Phosphorus (P) Maintenance Levels

Soil P Supplying Regions

Units High Medium Low

Minimum Soil Level 30 40 45 lbs/ac

Recommended Levels Corn/Beans 40 45 50 lbs/ac

Recommended Levels Wheat/Oats 60 67.5 75 lbs/ac

Potassium (K) Maintenance Levels

Soil K Exchange Capacity Regions

Units High (>12 mEq) Low (<12 mEq)

Minimum Soil Level 300 260 lbs/ac

Above with No Addition 400 360 lbs/ac

Levels >100 lb. above Min Replace Yield K Replace Yield K lbs/ac

Levels Below Minimum Replace Yield K + Build to Min

• Adjustments needed based on location and timing of sampling. See Attachments.

Phosphorus (P) Maintenance Levels Illinois Agronomy Handbook (Ch 8, 100) Minimum soil test levels required to produce optimal crop yields vary depending on the crop to be grown and the soil’s P-supplying power. Near maximal yields of corn and soybeans are obtained when levels of available P are maintained at 30, 40, and 45 pounds per acre for soils in the high, medium, and low P-supplying regions, respectively. Since these are minimal values, to ensure soil P availability will not restrict crop yield it is recommended that soil test results be built up to 40, 45, and 50 pounds per acre for soils in the high, medium, and low P-supplying regions, respectively. This is a practical approach because P is not easily lost from the soil, other than through crop removal or soil erosion. To compensate for the higher P requirements of wheat and oats, it is suggested that 1.5 times the amount of expected P removal be applied prior to seeding these crops.

When soil test levels are between the minimum and 20 pounds above the minimum (40 to 60, 45 to 65, and 50 to 70 for the high, medium, and low P-supplying regions, respectively), apply enough to replace expected removal by the crop. When soil test levels are below the desired values (40, 45, and 50 for the high, medium, and low P-supplying regions, respectively), it is suggested that enough fertilizer be added to build the test to the desired goal and to replace what the crop will remove (as described in the previous paragraph). At this test level, the yield of the crop will be affected by the amount of P applied that year.

On average, Illinois soils require 9 pounds of P2 O5 per acre to increase the P1 soil test by 1 pound. The recommended rate of buildup for P is thus nine times the difference between the soil test goal and the actual soil test value. For a typical 4-year buildup program, divide the rate by 4 to determine the annual rate. Because the 9-pound rate is an average for Illinois soils, some soils will fail to reach the desired goal in 4 years with P2 O5 applied at this rate, and others will exceed the goal.

Potassium (K) Maintenance Levels Illinois Agronomy Handbook (Ch 8, 103) Soils with a CEC less than 12 milliequivalents per 100 grams are classified as having low capacity, while soils with values equal to or greater than 12 milliequivalents per 100 grams are considered to have high capacity. Tests on soil samples that are taken before May 1 or after September 30 should be adjusted downward as follows: subtract 30 for the dark-colored soils in central and northern Illinois; subtract 45 for the light-colored soils in central and northern Illinois and for fine-textured bottomland soils; subtract 60 for the medium- and light-colored soils in southern Illinois.

Minimum soil test levels required to produce optimal crop yields vary depending on the crop to be grown and the soil’s CEC. As with P, the only significant loss of soil-applied K is through crop removal or soil erosion, so to ensure that K availability will not limit crop yields it is recommended that soil test levels be slightly higher than that required for maximum yield. For corn and soybean, it is recommended to have 260 and 300 pounds of exchangeable K per acre for soils in the low and high CEC regions, respectively.

No K additions are suggested if test levels are above 360 and 400 for the low and high CEC regions, unless crops that remove large amounts of K (such as alfalfa or corn silage) are being grown. When soil test levels are between the minimum and 100 pounds above the minimum (260 to 360 and 300 to 400 for the low and high capacity, respectively), apply enough to replace what the crop to be grown is expected to remove using values from Table 8.6. When soil test levels are below the desired values (260 and 300 for the low and high capacity, respectively), it is suggested that enough fertilizer be added to build the test to the desired goal and to replace what the crop will remove (as described in the previous paragraph). On average most Illinois soils require 4 pounds of K2 O per acre to increase the K exchangeable soil test by 1 pound. The recommended rate of buildup for K is thus 4 times the difference between the soil test goal and the actual soil test value. For a typical 4-year buildup program, divide the rate by 4 to determine the annual rate.

Clinton Lake S.R.A.

27AL2081

SITE AGLEASE FIELDID SoilSampleID LAT LONG

Clinton Lake State Recreational Area 2081 10383-8 10383-8-1 40.22977473 -88.81361301

Clinton Lake State Recreational Area 2081 10383-8 10383-8-2 40.2310005 -88.81198877

Clinton Lake State Recreational Area 2081 10383-8 10383-8-3 40.23284871 -88.81116411

Clinton Lake State Recreational Area 2081 10383-13 10383-13-1 40.23531458 -88.81033314

Clinton Lake State Recreational Area 2081 10383-1 10383-1-1 40.22350845 -88.82290493

Clinton Lake State Recreational Area 2081 10383-5A 10383-5A-1 40.22502829 -88.8198448

Clinton Lake State Recreational Area 2081 10383-5B 10383-5B-1 40.22507366 -88.81868612

Clinton Lake State Recreational Area 2081 10383-4 10383-4-1 40.22527781 -88.82144914

Clinton Lake State Recreational Area 2081 10383-6 10383-6-1 40.22704713 -88.81936944

Clinton Lake State Recreational Area 2081 10383-9 10383-9-1 40.23421468 -88.81229847

Clinton Lake S.R.A

27AL2101

Clinton Lake State Recreational Area 2101 10019-6 10019-6-1 40.15054738 -88.78704184

Clinton Lake State Recreational Area 2101 10019-2 10019-2-1 40.15053249 -88.78462705

Clinton Lake State Recreational Area 2101 10019-4 10019-4-1 40.15176286 -88.78380914

Clinton Lake State Recreational Area 2101 GR-005 GR-005-1 40.18181968 -88.75047379

Clinton Lake State Recreational Area 2101 10025-2 10025-2-1 40.18242168 -88.74805109

Clinton Lake State Recreational Area 2101 10024-10 10024-10-1 40.19658061 -88.74064498

Clinton Lake State Recreational Area 2101 10022-12 10022-12-1 40.19958903 -88.72852802

Clinton Lake State Recreational Area 2101 10023-0 10023-0-1 40.2002707 -88.73818711

Clinton Lake State Recreational Area 2101 10022-13 10022-13-1 40.2008136 -88.72690299

Clinton Lake State Recreational Area 2101 10030-13 10030-13-1 40.21293578 -88.69292512

Clinton Lake State Recreational Area 2101 10030-13 10030-13-2 40.21478312 -88.69209746

Clinton Lake State Recreational Area 2101 10030-13 10030-13-3 40.21477186 -88.69048612

Clinton Lake State Recreational Area 2101 10031-14 10031-14-1 40.2160128 -88.69127711

Clinton Lake State Recreational Area 2101 10031-14 10031-14-2 40.21600153 -88.68966573

Clinton Lake State Recreational Area 2101 10031-14 10031-14-3 40.21599023 -88.68805436

Clinton Lake State Recreational Area 2101 10031-14 10031-14-4 40.21723683 -88.68965102

Clinton Lake State Recreational Area 2101 10031-14 10031-14-5 40.21722554 -88.68803962

Clinton Lake State Recreational Area 2101 10018-15 10018-15-1 40.21780918 -88.68319801

Clinton Lake State Recreational Area 2101 10018-17 10018-17-1 40.22209851 -88.67831154

Clinton Lake State Recreational Area 2101 1265-1 1265-1-1 40.22705114 -88.67986346

Clinton Lake State Recreational Area 2101 1265-1 1265-1-2 40.2276802 -88.68146766

Clinton Lake State Recreational Area 2101 1265-1 1265-1-3 40.22765163 -88.67743855

Clinton Lake State Recreational Area 2101 1265-1 1265-1-4 40.22828644 -88.67984856

Clinton Lake State Recreational Area 2101 10032-30A 10032-30A-1 40.22822905 -88.67179028

Clinton Lake State Recreational Area 2101 1265-1 1265-1-5 40.22889265 -88.67822944

Clinton Lake State Recreational Area 2101 1265-1 1265-1-6 40.2288812 -88.67661777

Clinton Lake State Recreational Area 2101 1265-1 1265-1-7 40.22952173 -88.67983366

Clinton Lake State Recreational Area 2101 10032-30C 10032-30C-1 40.23001822 -88.66290338

Clinton Lake State Recreational Area 2101 10032-32 10032-32-1 40.23000655 -88.66129169

Clinton Lake State Recreational Area 2101 10032-30B 10032-30B-1 40.2290741 -88.6685939

Clinton Lake State Recreational Area 2101 10018-16 10018-16-1 40.2210712 -88.68104832

Clinton Lake State Recreational Area 2101 10031-14 10031-14-6 40.21807214 -88.68678234

Clinton Lake State Recreational Area 2101 10030-13 10030-13-4 40.21380698 -88.69172608

Clinton Lake State Recreational Area 2101 9-1 9-1-1 40.21217344 -88.70539267

Clinton Lake State Recreational Area 2101 10023-0 10023-0-2 40.19963565 -88.73701754

Clinton Lake State Recreational Area 2101 10022-12 10022-12-2 40.19857545 -88.72992518

Clinton Lake State Recreational Area 2101 10025-3 10025-3-1 40.18271161 -88.74586952

Clinton Lake State Recreational Area 2101 10026-7 10026-7-1 40.17610204 -88.75526916

Clinton Lake State Recreational Area 2101 10027-6 10027-6-1 40.17358861 -88.7569044

Clinton Lake State Recreational Area 2101 10029.9 10029.9-1 40.18500726 -88.7621904

Clinton Lake State Recreational Area 2101 10033-7 10033-7-1 40.18354008 -88.7681419

Clinton Lake State Recreational Area 2101 10033-6 10033-6-1 40.18179686 -88.76694399

Clinton Lake State Recreational Area 2101 10033-3 10033-3-1 40.17932723 -88.76793274

Clinton Lake State Recreational Area 2101 10033-4 10033-4-1 40.1772207 -88.76593623

Clinton Lake State Recreational Area 2101 10028-5 10028-5-1 40.16855581 -88.7598928

Clinton Lake State Recreational Area 2101 10034-7 10034-7-1 40.14514115 -88.79312636

Clinton Lake State Recreational Area 2101 10034-8 10034-8-1 40.14341875 -88.79549365

Harry Babe Woodyard S.N.A.

27AL2280

Harry Babe Woodyard State Natural Area 2280 4064-0 4064-3-1 39.95959291 -87.58255743

Harry Babe Woodyard State Natural Area 2280 4064-0 4064-4-2 39.95956635 -87.58095283

Harry Babe Woodyard State Natural Area 2280 4064-0 4064-5-3 39.96013055 -87.57772635

Harry Babe Woodyard State Natural Area 2280 4064-0 4064-4-4 39.96080113 -87.5809183

Harry Babe Woodyard State Natural Area 2280 4064-0 4064-4-5 39.96203592 -87.58088377

Harry Babe Woodyard State Natural Area 2280 4064-0 4064-5-6 39.96199604 -87.57847679

Harry Babe Woodyard State Natural Area 2280 4065-1 4065-1B-1 39.94636111 -87.56687673

Harry Babe Woodyard State Natural Area 2280 4065-1 4065-1-2 39.94758251 -87.56603981

Harry Babe Woodyard State Natural Area 2280 4884-0 4884-1-1 39.95670918 -87.55775632

Harry Babe Woodyard State Natural Area 2280 4884-0 4884-1-2 39.95668227 -87.55615182

Harry Babe Woodyard State Natural Area 2280 4065-2 4065-2-1 39.9480411 -87.56919819

Harry Babe Woodyard State Natural Area 2280 4065-0 4065-1C-1 39.94703529 -87.56891297

Harry Babe Woodyard State Natural Area 2280 4065-0 4065-1C-2 39.94519854 -87.56906509

Harry Babe Woodyard State Natural Area 2280 4065-0 4065-1C-3 39.94611692 -87.56794324

Harry Babe Woodyard State Natural Area 2280 4064-0 4064-7-7 39.95636403 -87.57644267

Harry Babe Woodyard State Natural Area 2280 4064-0 4064-7-8 39.95758833 -87.57642365

Harry Babe Woodyard State Natural Area 2280 4064-0 4064-7-9 39.95885634 -87.57640464

Harry Babe Woodyard State Natural Area 2280 4064-0 4064-5-10 39.96078016 -87.5789906

Harry Babe Woodyard State Natural Area 2280 9374-0 4064-1-1 39.96332423 -87.58458043

Harry Babe Woodyard State Natural Area 2280 9374-0 4064-1-2 39.96147163 -87.58411031

Harry Babe Woodyard State Natural Area 2280 4064-0 4064-6-11 39.95835078 -87.58313058

Harry Babe Woodyard State Natural Area 2280 4064-0 4064-6-12 39.95833256 -87.58157378

Harry Babe Woodyard State Natural Area 2280 4064-0 4064-6-13 39.95831434 -87.57989814

Harry Babe Woodyard State Natural Area 2280 4884-0 4884-1-3 39.95717311 -87.55931117

Iroquois County S.F.W.A

27AL2395

Iroquois County State Conservation Area 2395 6895-9D 6895-9D-1 40.99669691 -87.58867723

Iroquois County State Conservation Area 2395 6895-9A 6895-9A-1 40.99743559 -87.59599217

Iroquois County State Conservation Area 2395 6895-9A 6895-9A-2 40.99740865 -87.59436266

Iroquois County State Conservation Area 2395 6895-9D 6895-9D-2 40.99728716 -87.58702989

Iroquois County State Conservation Area 2395 6895-6A 6895-6A-1 40.99932782 -87.5983832

Iroquois County State Conservation Area 2395 6895-6A 6895-6A-2 40.99930092 -87.59675364

Iroquois County State Conservation Area 2395 6895-6B 6895-6B-1 40.99847765 -87.59806189

Iroquois County State Conservation Area 2395 6895-6B 6895-6B-2 40.99847765 -87.59556625

Iroquois County State Conservation Area 2395 6895-7B 6895-7B-1 40.99654028 -87.59769111

Iroquois County State Conservation Area 2395 6895-7A 6895-7A-1 40.99658333 -87.59888901

Iroquois County State Conservation Area 2395 6895-8A 6895-8A-1 40.99506569 -87.59806189

Iroquois County State Conservation Area 2395 6895-8A 6895-8A-2 40.99518409 -87.58799378

Iroquois County State Conservation Area 2395 6895-8A 6895-8A-3 40.99513027 -87.59328453

Iroquois County State Conservation Area 2395 6895-8B 6895-8B-1 40.9945598 -87.59858954

Iroquois County State Conservation Area 2395 6895-8B 6895-8B-2 40.99466744 -87.59187271

Iroquois County State Conservation Area 2395 6895-9C 6895-9C-1 40.99585143 -87.59523825

Iroquois County State Conservation Area 2395 6895-9C 6895-9C-2 40.99585143 -87.59161601

Iroquois County State Conservation Area 2395 6895-9B 6895-9B-1 40.99652952 -87.59599407

Iroquois County State Conservation Area 2395 6895-9B 6895-9B-2 40.9965941 -87.593584

Iroquois County State Conservation Area 2395 6895-9E 6895-9E-1 40.99595906 -87.5880936

Iroquois County State Conservation Area 2395 6895-10 6895-10-1 41.00009208 -87.58738056

Iroquois County State Conservation Area 2395 6895-11B 6895-11B-1 40.99562921 -87.58597795

Iroquois County State Conservation Area 2395 6895-11B 6895-11B-2 40.99823032 -87.58609679

Iroquois County State Conservation Area 2395 6895-11C 6895-11C-1 40.99558413 -87.58529652

Iroquois County State Conservation Area 2395 6895-11C 6895-11C-2 40.99826602 -87.58532998

Iroquois County State Conservation Area 2395 6895-11A 6895-11A-1 41.00140534 -87.58669099

Moraine View S.P.

27AL2026

Moraine View State Park 2026 34909-23 34909-23-1 40.39980896 -88.74159807

Moraine View State Park 2026 34909-23 34909-23-2 40.40104424 -88.7415842

Moraine View State Park 2026 34909-20D 34909-20D-1 40.40287591 -88.73833173

Moraine View State Park 2026 34909-20D 34909-20D-2 40.40286526 -88.73671589

Moraine View State Park 2026 34909-20B 34909-20B-1 40.40410587 -88.73750987

Moraine View State Park 2026 34909-13D 34909-13D-1 40.40662942 -88.74556163

Moraine View State Park 2026 34909-19 34909-19-1 40.40660299 -88.74152181

Moraine View State Park 2026 34909-13C 34909-13C-1 40.40726811 -88.74878663

Moraine View State Park 2026 34909-13D 34909-13D-2 40.4072576 -88.74717068

Moraine View State Park 2026 34909-19 34909-19-2 40.40721002 -88.73989893

Moraine View State Park 2026 34909-15A 34909-15A-1 40.40907885 -88.74230207

Moraine View State Park 2026 34909-18 34909-18-1 40.41024481 -88.73178412

Moraine View State Park 2026 34909-18 34909-18-2 40.41148009 -88.73177007

Moraine View State Park 2026 34909-11 34909-11-1 40.41523401 -88.73900052

Moraine View State Park 2026 34909-11 34909-11-2 40.41522336 -88.73738439

Moraine View State Park 2026 34909-25 34909-25-1 40.41765646 -88.73169982

Moraine View State Park 2026 34909-10B 34909-10B-1 40.41893451 -88.73815065

Moraine View State Park 2026 34909-10B 34909-10B-2 40.41891851 -88.73572632

Moraine View State Park 2026 34909-10B 34909-10B-3 40.41890246 -88.73330199

Moraine View State Park 2026 34909-25 34909-25-2 40.41889173 -88.73168577

Moraine View State Park 2026 34909-10A 34909-10A-1 40.42016446 -88.73732859

Moraine View State Park 2026 34909-10A 34909-10A-2 40.42015379 -88.73571234

Moraine View State Park 2026 34909-10A 34909-10A-3 40.42014309 -88.73409609

Moraine View State Park 2026 34909-21 34909-21-1 40.42138372 -88.73489022

Moraine View State Park 2026 34909-5 34909-5-1 40.42131913 -88.72519256

Moraine View State Park 2026 34909-1A 34909-1A-1 40.42203334 -88.73973211

Moraine View State Park 2026 34909-1B 34909-1B-1 40.42202802 -88.73892396

Moraine View State Park 2026 34909-1D 34909-1D-1 40.42262968 -88.73649253

Moraine View State Park 2026 34909-21 34909-21-2 40.42261899 -88.73487622

Moraine View State Park 2026 34909-5 34909-5-2 40.4225544 -88.72517839

Moraine View State Park 2026 34909-1A 34909-1A-2 40.42388625 -88.73971125

Moraine View State Park 2026 34909-1B 34909-1B-2 40.42388094 -88.73890308

Moraine View State Park 2026 34909-5 34909-5-3 40.42378967 -88.72516421

Moraine View State Park 2026 34909-24 34909-24-1 40.40002564 -88.73955306

Moraine View State Park 2026 34909-22 34909-22-1 40.39998944 -88.74613679

Moraine View State Park 2026 34909-20A 34909-20A-1 40.40496681 -88.73974321

Moraine View State Park 2026 34909-20C 34909-20C-1 40.40560027 -88.73703366

Moraine View State Park 2026 34909-20B 34909-20B-2 40.40511161 -88.73860234

Moraine View State Park 2026 34909-13F 34909-13F-1 40.40540119 -88.74682606

Moraine View State Park 2026 34909-13G 34909-13G-1 40.40574506 -88.74440173

Moraine View State Park 2026 34909-13E 34909-13E-1 40.40766349 -88.74437796

Moraine View State Park 2026 34909-15B 34909-15B-1 40.40858649 -88.7427142

Moraine View State Park 2026 34909-13B 34909-13B-1 40.40931041 -88.74758664

Moraine View State Park 2026 34909-13A 34909-13A-1 40.40894845 -88.74917909

Moraine View State Park 2026 34909-17 34909-17-1 40.41166307 -88.73613047

Moraine View State Park 2026 34909-1C 34909-1C-1 40.42382321 -88.73767539

Moraine View State Park 2026 34909-1C 34909-1C-2 40.42199571 -88.73769916

Moraine View State Park 2026 34909-9 34909-9-1 40.41993293 -88.73943422

Moraine View State Park 2026 34909-10C 34909-10C-1 40.41794247 -88.73943422

Moraine View State Park 2026 34909-10C 34909-10C-2 40.41794247 -88.73375368

Moraine View State Park 2026 34909-10C 34909-10C-3 40.41792437 -88.73541744

Moraine View State Park 2026 34909-10D 34909-10D-1 40.41674816 -88.73945799

Moraine View State Park 2026 34909-10D 34909-10D-2 40.41676625 -88.7353699

Moraine View State Park 2026 34909-10D 34909-10D-3 40.41676625 -88.73736641

Moraine View State Park 2026 34909-10C 34909-10C-4 40.41794247 -88.73731887

Moraine View State Park 2026 34909-4 34909-4-1 40.4232623 -88.72807313

Moraine View State Park 2026 34909-3 34909-3-1 40.42214047 -88.72983196

Moraine View State Park 2026 34909-7 34909-7-1 40.42154335 -88.72336707

Moraine View State Park 2026 34909-6 34909-6-1 40.42340705 -88.7233433

Moraine View State Park 2026 34909-8 34909-8-1 40.42293661 -88.72175085