Use DAFM’s pesticide explanation and the Commission’s plant-protection overview for terminology. To check a formulation, use the Irish register guide.
Separate the problem from the product
Write down what needs investigating before you choose a category. Damage from an unidentified cause is an observation; it does not yet show that a pesticide is needed. Give the adviser the crop, the affected plant part, the location, how the symptoms developed and their pattern.
Ask whether the problem is a weed, pest, disease, growth management or something else. Save the assessment together with the proposed action. A neighbour’s trade name is a product to look into; the diagnosis tells you what actually needs addressing.
In the farm office, keep separate headings for the target, the proposed intervention and the marketed product, and leave room to record a decision to monitor or to use a non-chemical measure.
Read function names as target categories
Pesticide types include herbicides, fungicides, insecticides, growth regulators, molluscicides and rodenticides. Herbicides target weeds, insecticides target insects and fungicides target fungi. These categories describe the intended function; they do not select an Irish product or a rate.
| Term you meet | Question to answer for the job |
|---|---|
| Herbicide | Which unwanted plant, and in which crop or situation? |
| Fungicide | Which disease, and what is the treatment for? |
| Insecticide | Which identified insect, and at what crop stage? |
| Molluscicide | Which slug or snail problem, and how will it be applied? |
| Plant growth regulator | Which change to crop development is intended? |
| Rodenticide | Which product, which site and which target animal? |
Do not write “insecticide” throughout a treatment history when the work also includes weed or disease control. Copy the function of each product from its own documents.
Keep plant protection and biocidal uses distinct
Pesticide is a wider term than plant protection product. Biocides include disinfectants and preservatives.
Before you add an item to a crop-treatment plan, check what it is meant for: a crop, a surface, a material or something else. For a product used around a building, tell the supplier the actual site and purpose. Do not carry a crop-use instruction over to a hygiene job just because both products control insects.
In a shared store inventory, note which documents come with each item and what job it is for. Keep a disinfectant purchase apart from the crop’s pesticide application record; the business can keep both, each with its own purpose.
Distinguish active substance from formulation
An active substance can be a chemical, plant extract, pheromone or microorganism. A plant protection product contains an active substance with other formulation components. Pesticide products are mixtures.
When an agronomist names a substance, ask which marketed formulation they mean. Put the full product name and identifier in the purchase request, and keep the substance name in a separate column so it stays available for technical questions without replacing the product.
For a product with several active substances, keep the composition as printed. Do not shorten it to the best-known ingredient when you ask about mixtures, resistance management or residue analysis. If an abbreviation could be misread, send the original document.
For a replacement purchase, ask for confirmation of the complete formulation. A familiar active-substance name or the colour of the pack does not show that you have ordered what the adviser specified. Settle any substitution before it goes into the operator’s work instruction.
Systemic farm chemicals: what does systemic mean?
Systemic herbicides enter through leaves or roots and move through the plant. This describes movement within the plant; keep it separate from the target category and the marketed formulation.
If a product is described as systemic, ask which active substance and formulation are meant, then check its Irish use instructions. Do not work out a mixing rate or application method from the word alone. Ask the supplier which instructions cover preparation and application, and use the label and SDS guide to compare those documents.
Separate nutrients from plant-protection functions
Plant-protection functions include influencing plant life processes through means other than nutrients. That distinction helps frame a question about a nutrition product, a growth regulator or an addition proposed for a tank mixture.
Ask what role each component is meant to play, identify the marketed product and get its technical information. Do not treat every liquid that goes through a sprayer as the same kind of crop-protection product.
In a mixed operation, list the nutrition and pesticide components separately. Use the compatibility guide to prepare your question, and keep the purpose, the compatibility evidence and the calculation clear.
Understand the different approval questions
EFSA and Member States conduct scientific risk assessment; the Commission decides on active-substance approval. National authorities separately authorise formulated products. Use those roles to route the question you actually have.
A question about an assessment goes to the scientific publication and its scope. A question about the pack on your farm goes to the Irish product identity and its use conditions. The active-substance assessment guide explains how to read the scientific documents.
In your notes, record proposals, published opinions and regulatory decisions separately, with the issuer and document type for each.
Use the Irish search route that matches your information
Search Irish product resources by product name, active substance or function/crop. Use the information available to begin the enquiry, then establish the complete product identity before preparing the job.
Keep your spray records in one place. Free to start.
If you have the pack, keep its exact wording and PCS number. If you only know a substance, ask the adviser which candidate products they have in mind. If you know the crop and the function, use them to look at the options instead of taking the first familiar trade name from a broad web search.
Keep the date and the actual search result with your research note. For a stock question, include the product’s withdrawal information where relevant, and do not give a whole function such as “herbicides” one general status.
Do not mistake a type name for handling advice
A type name explains purpose; it does not tell you how to handle a particular pack. Give the person assessing the activity the product label, the SDS and a description of the task, including preparation, application and cleaning. The Irish PPE guide helps with that activity-based question. Name the people, equipment and workplace involved, and keep operator protection, crop suitability and environmental precautions in separate parts of the work plan.
For a biological preparation, keep the same discipline: exact identity and instructions. “Biological” is a description to check, not a substitute for the supplied document.
Interpret residues separately from the application category
Pesticide use can leave residues in food; dietary risk assessment examines the resulting exposure. A residue-analysis enquiry therefore needs more information than the general function of the product applied.
Give the laboratory the crop or commodity, the target substance information and the reason for the analysis, and keep the application history and the lot reference. The MRL guide helps organise that separate enquiry.
File laboratory results, buyer specifications and treatment recommendations separately. Copy units and substance descriptions from the original report. Do not draw a diagnosis, a treatment rate or a full compliance conclusion from a function label.
Recognise chemical-family names without treating them as a shopping list
Chemical families include organophosphates, carbamates, organochlorines, pyrethroids, triazines, triazoles and neonicotinoids. Use the chemical family to classify the substance, then check current Irish authorisation for the marketed product.
When a report names a chemical family, ask which substance and formulation it means, and keep that wording linked to the actual product.
For a resistance-management question, give the adviser the real sequence of products used and your question, and look up the mode-of-action group of each active substance in the resistance-management guidance.
Separate chemical meaning from organic certification
In chemistry, organic and inorganic describe composition. That use of “organic” is a scientific description; it does not identify a crop’s certification status or a product accepted by a particular organic scheme.
If the question concerns an organically certified holding, name the certifier and the proposed input, and send the actual formulation and intended use through the scheme’s enquiry route. Keep the certifier’s answer with the product evidence rather than an informal description such as “natural”.
When a buyer’s questionnaire uses the word, ask which meaning it intends: chemical composition, certification, production history or marketing description are different questions.
Read the supporting ingredients as part of a formulation
Formulation components can include solvents, carriers, inert material, wetting agents and adjuvants.
Keep the full supplied product in the enquiry even when the active substance is its best-known part. If a supplier asks for composition information, send the relevant document and say which section you mean. Ask the issuer to explain an unfamiliar abbreviation rather than guessing a chemical name.
For a separate addition to the tank, identify its own product and purpose: a co-formulant already in a preparation and an additive proposed on the farm are different entries in the component list. Give the adviser the complete proposal so the answer covers the actual combination.
Types of pesticides used in agriculture and farming chemicals lists
The types of pesticides used in agriculture are named after what they target: herbicides for weeds, fungicides for fungal disease, insecticides for insects, with further groups for other pests. The classes of herbicides, the common pesticides used in farming and the insecticides used in agriculture are then separated by active substance, and each active substance is a name in the register. A farming chemicals list or a list of chemicals used for farming is therefore best built from the register's Function/Crop search, not from memory.
A foliar systemic insecticide is one applied to the leaves that the plant then carries inside. Insecticides, foliar fertilizers, fungicides and herbicides are different groups: a foliar fertiliser is a nutrient, not a plant protection product, and mixing it with one is a tank-mix question, covered in the tank-mix guide. Dangerous pesticides used in agriculture are not a list of types: the hazard of a product is printed in its label and safety data sheet, as the label guide shows.
Low-risk pesticides and products for professional use
Integrated pest management favours prevention and prioritises low-risk plant protection products and non-chemical methods. Where a risk assessment shows that a product is necessary, low-risk or biological products should be used where possible; other products are for the case where no suitable low-risk or biological one exists. Low-risk is therefore a place in that order, not a label you can assume: check each product's own label and register entry.
Commercial pesticides and insecticides for farms may carry the designation "Professional Use" on the label, so read the label first. Anyone who applies a product designated "Professional Use" on its label must be registered as a Professional User with DAFM, whatever the method or quantity. The training guide explains the course and registration.
Next step
Identify the target and exact formulation before using the Irish product register.