Past Cases and Investigations

Typical Issues in Past Cases

This summary is not intended to cover individual cases or issues. We have investigated hundreds of cases since 1983.

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Field Crops
Field Crops
Field Crops
Field Crops
Field Crops
Field Crops

Field Crops: (alfalfa, corn, safflower, rice, barley, wheat, sugar beets, cotton, etc.)


Injury to seed during drying or production

Damage due to contaminated tank

Premature defoliation

Herbicide damage as a result of run-off

Oust, Round-up, 2,4-D, Karmex injury

Damage caused by poor management

Land leveling problems

Methane migration from land fill

Determination of disease problems

Misapplication of fertilizer

Corn smut, loose smut

Curly top virus

Pesticide and contact herbicide drift

Treflan damage

Injury to seeds and seedlings

Herbicide misapplication


Mixed seed lots

Poor weed control

Lack of Rhizoctonia control

Sulfuric acid damage

Soil salinity and reclamation

Irrigation management

Fruit and Nut Crops
Fruit and Nut Crops
Fruit and Nut Crops
Fruit and Nut Crops
Fruit and Nut Crops
Fruit and Nut Crops

Fruit and Nut Crops: (almonds, walnuts, pecans, apples, citrus, pistachios, stone fruits, persimmons, pears, pomegranates, strawberries, blueberries, olives, etc.)



Copper-zinc and salt injury

Nematode problems

Misrepresentation of yields

Malfunction of irrigation lines

Evaluation of diseased nursery stock

Zinc deficiency and injury from foliar sprays

Damage during harvesting

Health evaluations of orchards

Pesticide phytotoxicity or misuse

Failure to control brown rot disease

Soil sterilant damage

Water, storage, and flooding issues

Brine damage

Genetic abnormalities

Disease evaluation

Mismanagement and harvesting damage

Trunk cankers

Poor planting stock

Apple scab, red scale and brown rot, crown gall

Apple Scab

Red Scale

Crown gall disease of nursery stock

Irrigation management

Soil chemistry / salinity management

Fruit and Nut Crops Fruit and Nut Crops Fruit and Nut Crops

Vegetable Crops
Vegetable Crops
Vegetable Crops
Vegetable Crops
Vegetable Crops
Vegetable Crops

Vegetable Crops:  (beans, asparagus, cucurbits, onions, garlic, tomatoes, potatoes, lettuce, peppers, nursery plants, etc.


Cannonball disease—watermelon damage in Imperial Valley

Bacterial disease on transplants

Defoliant Spray drift

Growth regulators (MH-30) on potatoes


Freeze damage and crop reduction

Damage by cows

Leaf drop and root rot

Virus infections and mosaic problems

Packing house and line problems

Decay in transit

Verticillium wilt

Water and flood damage

Genetic problems in seed

Nutrient deficiency

Disease evaluation

Failure of irrigation system

Loss due to herbicide efficacy or misuse

Fertilization and pesticide residue problems

Irrigation management

Soil chemistry / salinity management

Vine Crops
Vine Crops
Vine Crops
Vine Crops
Vine Crops

Vine Crops:  (grapes, Kiwi, etc.)


Pesticide phytotoxicity and misuse

Insecticide damage

Freeze damage and storage problems

Lack of mildew control

Shattering of grapes

Refusal of wine grapes by winery

Diesel fuel spill

Fire damage

Transit damage

Virus diseases

Flooding and other water problems

Frost and high temperature damage

Excess Botrytis on grapes

SO2 damage

Ammonia damage

Late harvest of wine grapes

Damage to raisins in storage

Poor management of vineyard

Leaking from railroad cars of Boron into vines

Vine Crops Vine Crops

Ornamental Crops
Ornamental Crops
Ornamental CropsOrnamental Crops
Vine Crops

Ornamental Crops:  (roses, pine trees, native plants, nursery plants, turf, etc.)


Disease problems

Fire, flooding, and drift damage

Poor cultural practices

Planting mix phytotoxicity

Herbicide damage by Spike

Low temperature damage to flowers

Hazardous and intrusive trees

Erosion of creek affecting soil

Soil fumigation problems

Vine Crops Vine Crops

Additional Issues:


Fly control in dairies

Malfunction of harvesting equipment

Human exposure to pesticides

Evaluation of tree fruit orchards and suitability for replanting studies

On-farm reservoir management

Evaluation of land resources

Loss of Certified Organic Status

Inspection of properties for value

Evaluation of pesticides for chemical companies

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