Soil sampling requirements in New York

Q: How many soil samples does a 100-acre field need in New York?

Under Cornell Nutrient Management Spear Program, Agronomy Fact Sheet Series: A uniform 100-acre field needs at least 7 composite samples of no more than 15 acres each, and at least 70 cores in all, 10 per sample.

State guidance: Cornell Nutrient Management Spear Program, Agronomy Fact Sheet Series.

Soil sampling in New York: frequency, area, depth and cores

How often do you need to soil sample in New York?

Cornell Nutrient Management Spear Program, Agronomy Fact Sheet Series Official guidance At least once every 2 to 3 years.

When in the year should soil be sampled in New York?

Cornell Nutrient Management Spear Program, Agronomy Fact Sheet Series Official guidance Best in fall after harvest of the main crop; spring or summer also possible. Sample around the same month each year. 5 to 6 weeks after fertilizer or manure, or sod termination, for pH, general fertility and the soil nitrogen test.

How many acres can one soil sample cover in New York?

Cornell Nutrient Management Spear Program, Agronomy Fact Sheet Series Official guidance Generally 15 acres (6.07 ha) or less per sample. Grid cells often 0.5 to about 6 acres.

How deep should soil samples be taken in New York?

Cornell Nutrient Management Spear Program, Agronomy Fact Sheet Series Official guidance Conventional tillage 0 to 8 inches (0 to 20.32 cm). Pasture 0 to 6 inches (0 to 15.24 cm). No-till or minimum till: 0 to 1 inch (0 to 2.54 cm) for pH and 0 to 6 inches (0 to 15.24 cm) for nutrients.

How many cores go into one soil sample in New York?

Cornell Nutrient Management Spear Program, Agronomy Fact Sheet Series Official guidance About two cores per acre (field acres times 2), at least 10 to 15 on smaller fields. Grid cells and zones: an average of two cores per acre.

How many soil samples does a 100-acre field need in New York?

Cornell Nutrient Management Spear Program, Agronomy Fact Sheet Series: A uniform 100-acre field needs at least 7 composite samples of no more than 15 acres each, and at least 70 cores in all, 10 per sample.

Samples and cores for any field size

Soil sampling rules in New York, with the exact wording of each source
Country / region	Purpose / programme	Time / frequency	Area per sample	Method	Depth	Cores	Status and source
United States
New YorkUnited StatesNew York only. Other states set their own rules.	Soil sampling for field cropsCornell Nutrient Management Spear Program, Agronomy Fact Sheet Series	Repeat At least once every 2 to 3 years Season Best in fall after harvest of the main crop; spring or summer also possible. Sample around the same month each year. Wait 5 to 6 weeks after fertilizer or manure, or sod termination, for pH, general fertility and the soil nitrogen test	Generally 15 acres (6.07 ha) or less per sample. Grid cells often 0.5 to about 6 acres.	Zigzag across the field when one sample represents the whole field. Grid sampling for larger fields and zone management; grid results can define management zones that are sampled from then on.	Conventional tillage 0 to 8 inches (0 to 20.32 cm). Pasture 0 to 6 inches (0 to 15.24 cm). No-till or minimum till: 0 to 1 inch (0 to 2.54 cm) for pH and 0 to 6 inches (0 to 15.24 cm) for nutrients.	About two cores per acre (field acres times 2), at least 10 to 15 on smaller fields. Grid cells and zones: an average of two cores per acre.	Official guidanceCornell Agronomy Fact Sheet #1, Soil Sampling for Field Crops (PDF)
Who it applies to, the exact wording and every source Who it applies to Advice for New York field crops from Cornell University College of Agriculture and Life Sciences. Not law. In force from Under review Legal text Cornell University, Agronomy Fact Sheet #1, Soil Sampling for Field Crops (2020) The wording in the source Timing It is recommended to take soil samples at least once every 2 to 3 years. Fact Sheet #1, Establish a Regular Sampling Time Soil samples are best taken in the fall after harvest of the main season crop but can also be taken in the spring or summer. Fact Sheet #1, Establish a Regular Sampling Time Consistently sampling around the same month of the year will help reduce seasonal variation in soil tests Fact Sheet #1, Establish a Regular Sampling Time For soil pH, general soil fertility, and determination of soil nitrogen supply potential with the Illinois Soil Nitrogen Test, do not sample within 5-6 weeks of fertilizer or manure application or sod termination. Fact Sheet #1, Obtain a Representative Sample Area per sample Generally, each sample should represent 15 acres or less, and separate samples should be collected from areas with different crop history, fertility management, crop growth, slope, etc. Fact Sheet #1, Obtain a Representative Sample Grid cell size often ranges from 0.5 to about 6 acres. Fact Sheet #1, Obtain a Representative Sample Method If a sample is needed to represent the entire field, and no prior information is available, take samples along a zig-zag pattern through the field. Fact Sheet #1, Obtain a Representative Sample Grid sampling may be used for larger fields and when zone-based management is desired. Fact Sheet #1, Obtain a Representative Sample Grid cells can be sampled separately over time or used to develop larger management zones, which can then be sampled separately in future years. Fact Sheet #1, Obtain a Representative Sample Depth For field crops, under conventional tillage, sample the top 0-8 inches (Figure 1). Fact Sheet #1, Sample the Proper Depth For pastures, it is recommended to sample the top 0-6 inches. For no-till or minimum-till cropping systems, take two samples: one for pH from the 0-1 inch depth and another from the 0-6 inch depth for nutrient analyses. Fact Sheet #1, Sample the Proper Depth Cores For best results, multiply the total acreage of the field by 2 to know roughly how many cores to combine across the field, with a 10-15 core minimum for smaller fields. Fact Sheet #1, Obtain a Representative Sample Each management zone should be sampled at an intensity that targets an average of two soil cores per acre or a full cup of soil to subsample. Fact Sheet #1, Obtain a Representative Sample Sources Cornell Agronomy Fact Sheet #1, Soil Sampling for Field Crops (PDF) Guidance Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.

United States: federal rules and every other state

Soil sampling regulations in every country

Report an outdated requirement: info@geopard.tech

Plan the points to the rule that applies

Set the area per sample, the cores and the depth your rule asks for. GeoPard places the points on a grid or by zone, routes the walk, prints the labels and takes the plan to the field on a phone.

Create a sampling plan See the Soil Sampling Planner

A planning reference built from official sources, not legal advice. Rules apply by jurisdiction, nutrient, land use and programme: check the current official text and your laboratory’s instructions before fieldwork.

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Soil sampling requirements in New York

Soil sampling requirements in New York

Soil sampling in New York: frequency, area, depth and cores

How often do you need to soil sample in New York?

When in the year should soil be sampled in New York?

How many acres can one soil sample cover in New York?

How deep should soil samples be taken in New York?

How many cores go into one soil sample in New York?

How many soil samples does a 100-acre field need in New York?

The wording in the source

Timing

Area per sample

Method

Depth

Cores

Sources

Plan the points to the rule that applies

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