The hydroseeding glossary
Read the term, understand its limits and continue into the relevant subject chapter.
- Acceptance criteria
- The conditions agreed for reviewing a defined part of the work. Criteria can involve vegetation, materials, measured area, timing or records, depending on the project. Keep the numerical criterion, observation method, responsible reviewer and decision date together. A field observation does not automatically constitute formal acceptance. Explore Scope, quantities and procurement →
- Agitation
- Movement used to combine and keep a hydraulic mixture in suspension within a machine. Jet and mechanical systems accomplish this differently. The exact model instructions and proposed materials determine what is appropriate. Agitation type alone does not establish material compatibility, discharge performance or the quality of the finished planting. Explore Hydroseeding equipment →
- Application rate
- A specified quantity placed over a specified area on a declared basis. Units and material basis must be explicit: seed, dry fibre, packaged product and water describe different quantities. Distinguish the authorized field rate from purchase allowances and from the total mixture in a working tank. Explore Application and field operations →
- Batch record
- A record connecting the material lots and quantities loaded to the intended treatment area and the actual application event. Include the relevant specification, date, machine, conditions and authorized changes. A batch record complements delivery documents and field observations; it does not replace either one. Explore Application and field operations →
- Bonded fiber matrix
- A product category used for certain hydraulically applied erosion-control systems. The category name is not a complete specification. Review the actual manufacturer documents, project design, substrate preparation, application requirements, curing or exposure conditions and machine compatibility. Do not infer a site-specific performance rating from the name alone. Explore Mulches, binders and material systems →
- Bulk seed weight
- The physical mass of the seed product being measured or purchased. It is different from a calculated pure-live-seed quantity. Interpretation depends on the lot label, analysis and specification. Reconcile the quantity on the required basis rather than assuming every kilogram in different seed products is biologically equivalent. Explore Seed and soil →
- Calibration
- A documented process for checking a measurement or application system against the relevant basis. What is calibrated and how it is checked must be clear. A machine setting, elapsed spraying time or visible colour is not by itself a complete measurement of seed or dry material placed per unit area. Explore Application and field operations →
- Carrier
- The truck, trailer or other supporting vehicle associated with the equipment. The actual mounted or towed configuration, loaded condition and intended route require competent review. Tank capacity is not a substitute for that review. Keep equipment selection and the suitability of its carrier connected in the planning record. Explore Hydroseeding equipment →
- Change record
- A record of a proposed or approved departure from an existing scope, quantity, material or responsibility. Preserve the original arrangement, describe what changes and why, and identify who is authorized to decide. A changed field condition should not silently become a revised commercial or technical obligation. Explore Scope, quantities and procurement →
- Compaction
- A change in soil condition associated with reduced pore space under loading or traffic. It can affect air, water movement and rooting, but an unseen site cannot be diagnosed from a generic description. Record traffic history and profile observations, then choose the relevant assessment before specifying relief or amendments. Explore Seed and soil →
- Concentrated flow
- Water moving through a relatively focused pathway rather than being distributed broadly across the surface. It can expose a planting to conditions that a simple seeding choice cannot resolve. Observe the route and its source, protect the area appropriately and obtain the relevant drainage or erosion-control review. Explore Diagnosing establishment problems →
- Cover estimate
- An estimate of how much of an observation area is occupied by the vegetation or other cover being assessed. State what counts as cover, the sample area and the observation method. Estimates from different methods or growth stages are not automatically comparable and do not independently establish formal acceptance. Explore Diagnosing establishment problems →
- Curing requirements
- Product-specific conditions or time associated with development of a material system after application. Requirements can depend on the actual product and environment. Obtain the current instructions and keep forecast exposure separate from an observed field condition. A generic label such as matrix does not establish a universal curing period. Explore Mulches, binders and material systems →
- Delivery efficiency
- In a water-planning calculation, the entered fraction of supplied water assumed to reach the intended area on the defined basis. It is a modelling input, not a property the worksheet measures. Actual coverage, overspray, evaporation, runoff and operating conditions need field observation and appropriate adjustment. Explore Establishment and aftercare →
- Dormancy
- A seed condition in which germination does not occur even when some conditions appear suitable, until the relevant requirements are met. Interpretation varies with species and test basis. Dormant or hard seed may be handled differently in a specification; do not silently add it to a germination figure in every quantity calculation. Explore Seed and soil →
- Dormant seeding
- Seeding planned for a period intended to delay germination until a later suitable window. The decision depends on plant choice, climate, soil conditions and the applicable plan. It does not guarantee that seed remains dormant or that later establishment will occur without loss, erosion or additional care. Explore Establishment and aftercare →
- Dry-product basis
- A quantity expressed for the dry material identified in the specification, rather than the full water-based slurry. Identify exactly what material and unit the rate uses. Comparing dry fibre quantities with total tank weight or liquid volume without conversion can produce a misleading material reconciliation. Explore Mulches, binders and material systems →
- Erosion control
- Measures intended to limit detachment and movement of soil. Vegetative establishment can be one part of the approach, alongside surface protection, drainage and other design decisions. Distinguish erosion control from sediment capture and from slope stability; choosing a seeding method does not resolve all three. Explore Projects and applications →
- Establishment
- The development of the intended planting after application. Germination, emergence, root development, plant cover and readiness for use are different stages or observations. The appropriate endpoint depends on the vegetation objective and project criteria. An immediately coloured surface is not evidence that establishment has been achieved. Explore Establishment and aftercare →
- Exclusion
- An area, task or obligation deliberately left outside a defined scope. Map physical exclusions such as beds or paths and describe responsibility exclusions in writing. For area arithmetic, subtract an exclusion only from the zone that contains it and do not subtract the same feature twice. Explore Scope, quantities and procurement →
- Fibre reinforced matrix
- A category of hydraulic erosion-control product systems involving reinforcement. The actual product documents and project requirements determine its use. Similar category names do not establish equivalent composition, mixing requirements, placement, environmental limits or performance. Review substitutions at the system level before loading or application. Explore Mulches, binders and material systems →
- Finished grade
- The intended final ground elevations and surface arrangement for the applicable part of a project. A seeding application does not approve or correct that arrangement. When drainage, adjoining property or completed site works are uncertain, resolve the grade requirements with the responsible people before treating the surface. Explore Projects and applications →
- Germination test
- A documented seed test performed on the specified basis and conditions. Its result helps describe the tested lot; it is not a forecast of emergence on an actual property. Test date, species, lot identity, dormancy and the applicable labelling or specification requirements influence how the information is used. Explore Seed and soil →
- Gross plan area
- The full area calculated from a declared plan-view boundary before stated exclusions are subtracted. The multi-zone workbook uses rectangular length multiplied by width. The gross plan area is not necessarily the actual surface area of sloping or irregular ground, and it does not establish a surveyed property boundary. Explore Scope, quantities and procurement →
- Handover
- The transfer of information and responsibilities for the next phase of the project. For a new planting, identify zones, care instructions, water arrangements, access controls, unresolved items and the person who acts. A general instruction to water is less useful than an arrangement another person can follow. Explore Establishment and aftercare →
- Hard seed
- A seed-analysis term associated with seed that does not readily take up water under the relevant test conditions. Its treatment in calculations depends on the specification and analysis basis. Do not assume hard seed can always be added to a germination percentage or ignored in every seed mixture. Explore Seed and soil →
- Hydraulic mulch
- Fibre or another specified mulch system placed using water-based application equipment. Depending on the process, it may be applied with seed or as part of a separate operation. The exact product, rate, substrate preparation and machine requirements matter more than the general category label. Explore Mulches, binders and material systems →
- Hydromulching
- Hydraulic application of a specified mulch mixture. The term does not by itself establish that seed is included. Describe the actual materials and process in the scope so that seeding, surface protection and establishment responsibilities remain clear. Marketing use of the term can vary between suppliers and projects. Explore Mulches, binders and material systems →
- Hydroseeder
- Equipment used to mix and apply a specified water-based seeding slurry. The working system includes agitation, tank, pump, discharge components and its carrier or installation. FINN uses HydroSeeder® as a trademark; the general equipment category includes other manufacturers. This site does not imply manufacturer affiliation. Explore Hydroseeding equipment →
- Hydroseeding
- A method of applying seed in a water-based slurry, often with specified mulch and other materials. It is a placement method within a larger preparation and establishment plan. It does not independently choose the right plants, correct unsuitable soil, resolve drainage or guarantee the development of a usable lawn. Explore Projects and applications →
- Infiltration
- The entry of water into soil at the surface. Observations can help identify differences between zones, but a casual watering observation is not a complete soil or drainage test. Texture, structure, compaction, surface condition and antecedent moisture can influence what is seen. Define the question before selecting a test. Explore Seed and soil →
- Jet agitation
- An agitation approach using recirculated liquid through a system designed for the machine. Capabilities differ between models and approved material combinations. Compare the exact instructions and working requirements rather than assuming every jet-agitated unit can process the same fibres, additives or mixture concentrations. Explore Hydroseeding equipment →
- Lot identity
- The identifying information that links a particular batch of seed or material to its label, analysis and delivery records. Keep that connection through storage, loading and application. A product name alone may not distinguish different deliveries or test results that need to be reconciled later. Explore Seed and soil →
- Mechanical agitation
- Agitation using a mechanically driven component within the designed mixing system. The term alone does not establish usable capacity, material compatibility or discharge capability. Consult the exact model instructions and keep servicing or clearing of moving components within the required isolation and competent-work procedures. Explore Hydroseeding equipment →
- Net treatment area
- The included treatment footprint after the stated exclusions have been removed on the declared measurement basis. A useful takeoff connects this quantity to a map, individual zones and the measurement method. Keep it separate from gross property area and from areas receiving a different treatment. Explore Scope, quantities and procurement →
- Nozzle
- The discharge component associated with the intended application pattern and operating system. Selection belongs with the approved hose, couplings, pressure and slurry requirements. A public planning guide cannot authorize a substitution or a method of clearing a blocked component; use the actual equipment instructions and appropriate personnel. Explore Hydroseeding equipment →
- Overseeding
- Adding seed to an existing vegetated area as part of a defined improvement plan. Existing cover, competition, soil condition and the cause of thin growth affect the decision. Adding seed does not automatically correct shade, compaction, drainage, traffic or care problems that contributed to the original condition. Explore Establishment and aftercare →
- Plan area and surface area
- Plan area describes a horizontal or specified map-view footprint. Surface area follows the actual ground surface on the defined basis. They can differ on slopes. State which basis the specification and rate require before converting measurements into quantities; a rectangular workbook does not make that decision. Explore Application and field operations →
- Planning allowance
- A separate resource or procurement allowance added to an arithmetic estimate. Identify its purpose and basis. Additional material purchased for planning uncertainty does not authorize a higher application rate, disposal on the site or the assumption that all surplus must be used. Keep the allowance visible in the record. Explore Scope, quantities and procurement →
- Provenance
- The documented origin or source context of seed or other biological material. It can be important in native planting and restoration objectives. Review the required plant community, project specification and supplier evidence; a broad native label does not establish that every source is appropriate for every site. Explore Seed and soil →
- Pure live seed
- A quantity concept connecting purity and a stated germination or viability basis to a biological seed amount. The simplified worksheet uses purity multiplied by germination only. Specifications may define additional treatment of hard or dormant seed. Confirm the required basis and mixture interpretation before converting to bulk weight. Explore Seed and soil →
- Rinsate
- Liquid and residues arising from rinsing equipment or containers. Its management belongs in the job plan before loading begins. The material documents, site conditions and applicable requirements determine the appropriate arrangements. Do not assume rinsate may be discharged onto a lawn, into a drain or beside a watercourse. Explore Application and field operations →
- Rootzone
- The ground volume available and suitable for root development on the relevant site. Its condition can be affected by soil layers, compaction, moisture, chemistry and previous work. A visually even surface application cannot establish the rootzone condition underneath; use appropriate observations and assessment to answer that question. Explore Seed and soil →
- Safety data sheet
- A manufacturer or supplier document containing specified hazard and handling information for a product. Use the current document for the actual material and read it alongside the label and application instructions. An SDS is not a complete project design, machine compatibility approval or substitute for workplace procedures. Explore Mulches, binders and material systems →
- Sediment control
- Measures intended to manage soil particles after they have been detached and transported. It is related to, but distinct from, preventing erosion at the source. New seeding does not automatically remove the need for other project sediment controls or establish that runoff can be discharged without review. Explore Projects and applications →
- Seedbed
- The prepared surface and immediately relevant soil conditions intended to receive seed. Readiness involves the specified preparation, material and site requirements, not only appearance. Record unresolved weeds, water movement, compaction or unfinished work before application so responsibility for the next decision is clear. Explore Seed and soil →
- Slurry
- The water-based mixture prepared for hydraulic application. Its composition, concentration and behaviour depend on the specified materials and machine. Total slurry volume is not the same as seed weight, dry mulch weight or treated area. Keep those quantities separate in batch planning and records. Explore Application and field operations →
- Tackifier
- A binding component used within certain erosion-control or hydraulic mulch systems. Products differ in their instructions, compatibility and intended applications. The term does not establish a universal dosage or guarantee resistance to any rainfall. Review the actual product system and the site specification before use. Explore Mulches, binders and material systems →
- Topsoil
- The soil material identified for the upper growing layer on the defined project basis. Its suitability depends on more than a dark colour or a delivery description. Handling, stockpiling, placement and the underlying ground can affect the resulting rootzone. Use the specified quality evidence and a suitable placement plan. Explore Seed and soil →
- Working capacity
- The usable capacity identified for the actual machine operation and material system. It may differ from a nominal tank volume. Confirm its definition in the model documents before estimating batches, water provision or carrier loading. A tank-cycle worksheet cannot validate a manufacturer limit or safe loaded configuration. Explore Hydroseeding equipment →