Crop Science

Pest & Disease Library for Commercial Crops

There's a solution to every crop problem.

Identify crop pests, diseases, nutrient disorders, and plant stress problems — then match them to a natural, low-residue Vegalab solution.

Not sure what's attacking your crop? Ask Vegalab for a diagnosis and a crop-specific program. Request a diagnosis

Use this library to diagnose common crop problems by symptom, pest, disease, or crop stage. Each guide explains what to look for, how the problem spreads, how to reduce pressure through IPM practices, and which Vegalab products may fit the program. Product claims, rates, and availability vary by jurisdiction. Always follow the applicable label.

Browse by category

Insects & Mites 26

Sap-suckers, borers and mites — identify the pest and match it to a natural control.

Soil & Root Pests 3

Soil-dwelling parasites that attack roots and rob vigour below ground.

Slugs, Worms & Other Pests 3

Slugs, snails, invasive worms and aquatic larvae — pests that don't fit the usual groups.

Fungal & Oomycete Diseases 22

Mildews, blights, rots and wilts — including oomycetes like downy mildew and Phytophthora.

Bacterial Diseases 4

Blights, cankers and spots spread by water and wounds — prevention-led management.

Viruses 2

No cure once infected — these guides lead with prevention and insect-vector control.

Disorders & Nutrient Deficiencies 12

Not a pest at all — nutrient, water and physiological problems and how to correct them.

Beneficial & Apiary Threats 1

Invasive predators of beneficial insects — managed to protect honey bees and pollination, with bee-safety built into the method.

Insects & Mites 26

Insects & MitesAphidsTomatoes, Peppers, Brassicas, OrnamentalsInsects & MitesSpider MitesStrawberries, Cannabis, Grapes, TomatoesInsects & MitesBroad & Russet MitesPeppers, Tomatoes, Cannabis, CitrusInsects & MitesThripsOnions, Peppers, Ornamentals, GrapesInsects & MitesWhitefliesTomatoes, Cucumbers, Peppers, OrnamentalsInsects & MitesApple MiteApples, Pears, Stone FruitInsects & MitesCaterpillars & LarvaeBrassicas, Tomatoes, Corn, GrapesInsects & MitesCodling MothApples, PearsInsects & MitesLeaf MinersTomatoes, Leafy Greens, Ornamentals, CitrusInsects & MitesPeach Fruit Moth (Carposina)Peaches, Apples, PearsInsects & MitesCotton BollwormCotton, Corn, Tomato, PepperInsects & MitesLygus & Plant BugsCotton, Strawberries, Vegetables, LegumesInsects & MitesArmyworm & CutwormCereals, Corn, Brassicas, VegetablesInsects & MitesScale InsectsTree fruit, Citrus, Vines, OrnamentalsInsects & MitesMealybugsVines, Citrus, Tree fruit, CannabisInsects & MitesStem BorersCorn, Rice, Sugarcane, SorghumInsects & MitesLeaffolderRiceInsects & MitesLeafhoppersCotton, Vines, Potato, VegetablesInsects & MitesDiamondback Moth & Cabbage CaterpillarsCabbage, Broccoli, Cauliflower, CanolaInsects & MitesOriental Fruit MothPeach, Apple, Plum, NectarineInsects & MitesClearwing & Peach Tree BorersPeach, Cherry, Plum, AppleInsects & MitesMelon & Cucurbit BorerCucumber, Melon, Squash, PumpkinInsects & MitesWestern Flower ThripsGreenhouse crops, Peppers, Tomatoes, StrawberriesInsects & MitesCabbage LooperCabbage, Lettuce, Broccoli, TomatoInsects & MitesPink BollwormCotton, OkraInsects & MitesCitrus Rust MiteCitrus, Oranges, Grapefruit, Lemons

Soil & Root Pests 3

Soil & Root PestsRoot-Knot NematodesTomatoes, Cucumbers, Melons, PeppersSoil & Root PestsReniform NematodeCotton, Vegetables, Soybean, Sweet potatoSoil & Root PestsLesion NematodeCereals, Corn, Tree fruit, Potato

Slugs, Worms & Other Pests 3

Slugs, Worms & Other PestsSlugs & SnailsLettuce, Brassicas, Strawberries, SeedlingsSlugs, Worms & Other PestsJumping Worms (Amynthas)Ornamentals, Turf, Nursery, VegetablesSlugs, Worms & Other PestsMosquito LarvaeIrrigated Row Crops, Orchards, Greenhouse

Fungal & Oomycete Diseases 22

Fungal & Oomycete DiseasesPowdery MildewGrapes, Cucurbits, Apples, BramblesFungal & Oomycete DiseasesDowny MildewGrapes, Cucurbits, Lettuce, BrassicasFungal & Oomycete DiseasesAnthracnoseBeans, Cucurbits, Tomatoes, BramblesFungal & Oomycete DiseasesGray Mold (Botrytis)Strawberries, Grapes, Brambles, TomatoesFungal & Oomycete DiseasesEarly BlightTomatoes, PotatoesFungal & Oomycete DiseasesLate Blight (Phytophthora)Tomatoes, PotatoesFungal & Oomycete DiseasesDamping-OffSeedlings, Vegetable Transplants, OrnamentalsFungal & Oomycete DiseasesLeaf MoldTomatoesFungal & Oomycete DiseasesVerticillium & Fusarium WiltTomatoes, Strawberries, Potatoes, CucurbitsFungal & Oomycete DiseasesRust DiseasesApples, Cereals, Beans, OrnamentalsFungal & Oomycete DiseasesTake-AllWheat, Barley, TurfFungal & Oomycete DiseasesBlack SigatokaBananas, PlantainsFungal & Oomycete DiseasesPhytophthoraTree fruit, Vines, Cucurbits, PeppersFungal & Oomycete DiseasesPythium & Damping-OffVegetables, Greenhouse crops, Cucurbits, Field cropsFungal & Oomycete DiseasesPhomopsis BlightVines, Cucurbits, Eggplant, Tree fruitFungal & Oomycete DiseasesLeaf Blister & Leaf CurlPeach, Nectarine, Almond, Stone fruitFungal & Oomycete DiseasesCanopy Blight & Leaf Spot ComplexTomato, Potato, Cucurbits, BrassicasFungal & Oomycete DiseasesBrown Rot of Stone FruitPeach, Nectarine, Cherry, PlumFungal & Oomycete DiseasesSclerotinia (White Mold)Beans, Canola, Lettuce, SunflowerFungal & Oomycete DiseasesSeptoria Leaf SpotTomato, Celery, Cereals, LettuceFungal & Oomycete DiseasesSooty MouldCitrus, Tree fruit, Vines, OrnamentalsFungal & Oomycete DiseasesRhizoctonia (Root Rot & Damping-Off)Vegetables, Potato, Cotton, Turf

Bacterial Diseases 4

Bacterial DiseasesFire BlightApples, PearsBacterial DiseasesBacterial BlightBeans, Brassicas, Stone Fruit, RiceBacterial DiseasesBacterial Shot HolePeaches, Cherries, Plums, ApricotsBacterial DiseasesBacterial Spot & SpeckTomato, Pepper, Peach, Stone fruit

Viruses 2

VirusesMosaic VirusTomatoes, Cucurbits, Peppers, TobaccoVirusesLeaf Curl VirusesTomatoes, Peppers, Cucurbits

Disorders & Nutrient Deficiencies 12

Disorders & Nutrient DeficienciesBrown Spot & Cork SpotPears, ApplesDisorders & Nutrient DeficienciesBlossom-End RotTomatoes, Peppers, Squash, MelonsDisorders & Nutrient DeficienciesFruit Cracking & SplittingTomatoes, Cherries, Grapes, Stone FruitDisorders & Nutrient DeficienciesNitrogen DeficiencyAll CropsDisorders & Nutrient DeficienciesMagnesium DeficiencyTomatoes, Grapes, Potatoes, CitrusDisorders & Nutrient DeficienciesCalcium Deficiency (Tip Burn)Lettuce, Brassicas, Tomatoes, PeppersDisorders & Nutrient DeficienciesMicronutrient DeficiencyCitrus, Grapes, Vegetables, OrnamentalsDisorders & Nutrient DeficienciesWeak Stems & LodgingCereals, Wheat, Barley, Tall VegetablesDisorders & Nutrient DeficienciesPoor Root DevelopmentAll CropsDisorders & Nutrient DeficienciesSalt & pH Soil ImbalanceAll Crops, GreenhouseDisorders & Nutrient DeficienciesDrought Stress & Stress CrackingTomatoes, Stone Fruit, Grapes, VegetablesDisorders & Nutrient DeficienciesPoor Fruit Color & Low BrixGrapes, Apples, Tomatoes, Berries

Beneficial & Apiary Threats 1

Beneficial & Apiary ThreatsAsian Hornet (Vespa velutina)

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Not sure what's attacking your crop? Tell us what you're seeing and a Vegalab agronomist will recommend a crop-specific program. Photos are optional but help. Product availability and claims vary by jurisdiction.

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