This guide for 2020 contains suggestions for management of the most important or more prevalent diseases of Louisiana plants. It includes information on fungicides, bactericides and nematicides, as well as safety precautions for using them. Special features include:
The 2020 guide is available for purchase in the LSU AgCenter Online Store..
See the pages below for the full guide in PDF format.
|Field Crops: Corn|
|Field Crops: Cotton|
|Field Crops: Oats|
|Field Crops: Peanuts|
|Field Crops: Rice|
|Field Crops: Soybeans|
|Field Crops: Sugarcane|
|Field Crops: Wheat|
|Fruit Crops: Apples|
|Fruit Crops: Blackberries|
|Fruit Crops: Blueberries|
|Fruit Crops: Citrus|
|Fruit Crops: Grapes|
|Fruit Crops: Mayhaws|
|Fruit Crops: Stone Fruits (Peaches, Plums etc.)|
|Fruit Crops: Pears|
|Fruit Crops: Pecans|
|Fruit Crops: Strawberries|
|Fungicide Resistance Management|
|Home Lawn Landscape Fruits and Nuts and Vegetables|
|Pesticide Use and Safety|
|Plant Diagnostic Clinic|
|Plant Disease Management Guide 2020|
Instructions for collection, preparation and shipment of plant samples to the the Plant Diagnostic Clinic.
Disease control of anthracnose, charcoal rot, downy mildew, head blight, gray leaf spot and zonate leaf spot.
Fungicides are important tools for managing many diseases in agricultural and horticultural crops. Fungicides are most effective when applied before fungal infections are established. Because protection by fungicides is temporary, they may need to be reapplied to protect new growth.
Christmas tree growers face many obstacles to growing healthy trees with the largest challenge being pests.
Successful management of sweet potato diseases requires the same strategies as other vegetables.
Disease control of common rust, southern rust and smut.
Disease control of fusarium wilt, verticillium wilt, root-knot nematode, seedling diseases and boll rots.
Disease control of crown rust, stem rust, yellow dwarf and leaf blotch.
Disease control of cercospora leaf rot, root rot, pod rot, stem rot and limb rot.
Disease control of blast, sheath blight, brown leaf spot, narrow brown leaf spot, seed and seedling diseases, stem rot and straighthead.
Disease control of seedling diseases, charcoal rot, phytophthora root rot, red crown rot, Southern blight, aerial blight, brown leaf spot, downy mildew, frogeye, purple seed stain, anthracnose, pod & stem blight, stem canker, virus or viruslike disease complex, nematodes, root knot and soybean cyst.
Disease control of leaf scald, mosaic, ratoon stunting disease, red rot, rust, smut and white stripe.
Disease control of leaf rust, stem rust, leaf and glume blotch, powdery mildew, bacterial streak/black chaff, fusarium head blight/scab, stripe rust, tan spot and yellow dwarf.
Disease control of bitter rot, blotch, rust and fire blight.
Disease control of boytris, leaf spot, cane spot, rust, phytophthora, root rot, anthracnose, alternaria leaf spot and blotch.
Disease control of mummy berry, fruit rots, leaf spots, bacterial canker, phytophthora and root rot.
Disease control of melanose, scab, sooty mold, green mold, blue mold and sour rot.
Disease control of anthracnose, black rot and Pierce's disease.
Disease control of rusts, powdery mildew and fireblight.
Disease control of bacterial spot, black knot, brown rot, crown gall, peach leaf curl, phony peach, rhizopus rot, root rot, rust and scab.
Disease control of early leaf spot, fireblight, late leaf spot and quince rust.
Disease control of brown spot, bunch disease, downy spot, powdery mildew, leaf scorch, rosette, scab and vein spot.
Disease control of crown rot, gray mold, leaf blight, leaf scorch, leaf spot (rust), powdery mildew, root knot nematodes and summer dwarf or bud nematode.
Fungicides to use on home lawns, landscapes, gardens and orchards.
The LSU AgCenter Plant Disease Management Guide is a resource for crop producers in Louisiana and neighboring states.
Nematode control in field crops, fruit crops, ornamentals, turfgrass, vegetables and home gardens.
Disease control in annuals, perennials, shrubs, trees, etc.
Some of the pesticides or certain uses of pesticides in this publication may be classified for restricted use. It is unlawful for a non-certified applicator to use a pesticide which has been classified with restricted uses. Information on pesticide applicator certification programs may be obtained from the LSU AgCenter.
Seed treatments for field crops and vegetables.
There are a number of plant-parasitic nematodes and plant pathogens that inhabit the soil and cause damage to or disease in crops. Soil fumigants can kill parasitic nematodes, soilborne pathogens, insects and weeds in the soil – thereby improving seedling and crop performance.
Disease control of algae, bermudagrass decline, brown patch, centipedegrass mosaic, dollar spot, fairy ring, gray leaf spot, melting out/helminthosprium leafspot, nematodes, pythium blight, slime mold and St. Augustine decline (SAD).
Disease control on asparagus, beans, beets, broccoli, Brussels sprouts, cabbage, cantaloupe, carrots, cauliflower, celery, collards, corn, cucumber, eggplant, garlic, leafy vegetables, leek, lettuce, mustard greens, okra, onions, peas, peppers, potatoes, pumpkin, shallots, spinach and squash.
toll-free numbers to call in case of poisoning. (PDF Format Only)