Bahiagrass Soil Testing in Okeechobee: Soil vs. Tissue
When an established bahiagrass pasture needs a nutrient check, it is easy to assume one soil bag answers every question. But the test you request matters. If you want a phosphorus recommendation for established bahiagrass, UF/IFAS says a soil test alone is not enough. Its B-15 test calls for both soil and plant tissue.1
This distinction is useful for Okeechobee landowners planning pasture work. It can prevent sending only one sample and later discovering the report does not address the question. This guide explains how UF/IFAS separates new from established bahiagrass, when tissue is needed, and how to match samples to a field.1
A “pasture soil test” is not one test
Before collecting, identify what is growing and how the pasture is managed. The UF/IFAS Bahia form distinguishes new plantings as crop code 35 and established stands as crop code 36. For established Bahia, it also requires a management option: Low, Medium, High, or Hay. Choose Hay when any hay cuts are planned.1
Those choices tell the laboratory which crop situation and recommendation context to use. A grazed pasture is not described in the same way as a stand where hay will be removed. If you are renovating an old pasture or establishing a new stand, make that clear before choosing a test form.1
Divide the pasture into meaningful sample areas
A sample should represent one area with broadly similar soil, appearance, and cropping or management history. If two sections look or behave differently, do not combine them simply because they share a fence line. UF/IFAS advises sampling similar areas together and different or problem areas separately when needed.1
Before collecting, sketch or print a map and mark each pasture or management unit, dominant forage, and any area to test separately. Clear labels help connect each result to the ground.
Use the same sample name on the map, bag, and notes. “North bahiagrass, grazed” is more useful than “field 2.” Record acreage and the reason for testing, such as pH review, uneven growth, or renovation. Those notes tell the lab or adviser what question you need answered.
Treat a weak patch beside a healthier stand as its own sample zone when appropriate. Do the same when forage or use changes. A representative sample is defined, not simply large.
For a property-wide comparison, keep these units separate even if that means more than one sample bag. Combining contrasting areas may hide the difference you are trying to understand. A simple map makes the extra labels manageable and helps keep the lab result connected to the correct field.
Collect a representative pasture sample
For bahiagrass, UF/IFAS recommends collecting soil from 20 or more spots in each area, mixing only those subsamples in a clean bucket, sampling from zero to four inches deep, air-drying the mix, and submitting about one-half pint or one cup in a labeled bag. Do not send a wet sample. Follow the current form for the test selected.1
The goal is not to average away meaningful differences. It is to avoid letting a single spot stand in for a whole management area. That is why defining the zone comes before collecting the first core.
A few habits help:
- Stay within the zone. Keep each management area separate.
- Spread the collection points. Do not let one corner dominate.
- Use a clean bucket. Mix only subsamples from the same area.
- Label clearly. Match the bag to your map and notes.
If you are unsure which depth, crop code, or form fits your forage, ask the lab or a UF/IFAS Extension office before collecting. That can prevent a report that does not answer your question.
Request a test that matches the forage and its use
“Pasture soil test” can mean more than one thing. The request depends on forage and management. UF/IFAS distinguishes new bahiagrass plantings from established stands, and its established-pasture form includes a hay option when forage will be cut.1
Phosphorus shows why test choice matters. For established bahiagrass, the UF/IFAS B-15 test requires soil and plant tissue when a phosphorus recommendation is desired. A soil-only test will not provide that recommendation.1
If phosphorus guidance is part of the question, follow the form’s instructions for the tissue sample and its label as well as the soil sample. Do not assume it is optional because soil analysis is already requested.
Before sampling, note the grass species, whether it is new or established, and whether it is grazed or cut for hay. Share those details with the lab or adviser, then request a test that fits the decision you need to make.
When established Bahia needs a tissue sample
For established bahiagrass, UF/IFAS lists Test 15, a standard soil fertility test for soil samples only, and B-15, a standard soil-and-tissue test. Both samples are required when a phosphorus recommendation is wanted. UF/IFAS says soil tests alone are not adequate to determine phosphorus fertilization needs for established bahiagrass.1
The UF/IFAS form also says phosphorus should not be applied if tissue phosphorus is at or above 0.15 percent, even when the soil test is low. Follow the report and current lab instructions rather than turning a single soil number into an application decision.1
If phosphorus is not part of the question, Test 15 can still provide listed soil measures such as pH and lime requirement, potassium, calcium, magnesium, sulfur, and selected micronutrients. A soil-only submission may be useful, but it does not provide a phosphorus fertilizer recommendation for established Bahia.1
UF/IFAS also cautions that lime recommendations are based on a calibrated lime-requirement test and crop target pH, not soil pH alone.2 3C offers lime applications and fertilizer applications separately from its soil-testing service. Use the report to guide the next conversation, not as a blanket instruction to apply every input.
Connect soil testing to the next pasture decision
If you plan to establish new forage or renovate a tired stand, sampling is one part of the job. 3C offers soil testing and amendments in its Okeechobee-area services. Its pasture seeding and renovation service page describes related work, while the existing Vero Beach pasture seeding guide covers planting decisions in a nearby service area. The Okeechobee service-area page outlines local agricultural work.
Keep the order simple: define the area, collect a representative sample, request the right test, review the report, then decide on lime, fertilizer, seeding, or another step. Testing cannot diagnose every pasture problem, but it can replace a blanket guess with information tied to a field and goal.
To discuss pasture soil testing or amendment planning around Okeechobee, call or text 3C Land and Agricultural Services at (772) 272-8630. Have the pasture map, forage type, and any recent report ready so the conversation can start with the right area and question.
Frequently asked questions
Is a soil-only test enough for established bahiagrass?
Not if you want a phosphorus recommendation from UF/IFAS. B-15 requires soil and plant tissue; Test 15 is soil-only and does not provide a phosphorus fertilizer recommendation.1
What is the difference between bahiagrass crop codes 35 and 36?
UF/IFAS uses crop code 35 for new plantings and 36 for established bahiagrass. The established-pasture form also requires a management option.1
How deep should I sample pasture soil?
The UF/IFAS Bahia form says to collect pasture soil from zero to four inches, taking samples from 20 or more spots in each defined area.1
What tissue sample should accompany B-15?
UF/IFAS instructs producers to submit bahiagrass tissue without roots when seeking a phosphorus recommendation. Match its sample ID to the soil sample and follow the current form.1
Sources
[1] UF/IFAS SL395 Nutrient Testing Form for Bahia Pastures
[2] UF/IFAS SL129 Standardized Fertilization Recommendations for Agronomic Crops
