| Image |
Descriptor |
Description |
Photographer |
| 0364088 |
Damage |
hydrogen fluoride damage |
Robert L. Anderson |
| 0364089 |
Damage |
hydrogen fluoride damage to white pine |
Robert L. Anderson |
| 0541038 |
Damage |
hydrogen flouride |
Petr Kapitola |
| 1241647 |
Damage |
Douglas-fir damaged several miles downwind from release site of chloring gas. Outer foliage was killed and shed within two weeks of exposure. |
Susan K. Hagle |
| 1241648 |
Damage |
Trees of several species died after calcium chloride dust abatement was applied to the road. |
Susan K. Hagle |
| 1241649 |
Damage |
Foliage symptoms of calcium chloride injury. Symptoms developed in the spring following a late summer application. |
Susan K. Hagle |
| 1241650 |
Damage |
Magnesium chloride dust abatement injury. |
Gregg DeNitto |
| 1241651 |
Damage |
Magnesium chloride dust abatement injury. |
Gregg DeNitto |
| 1248037 |
Damage |
Roadside damage due to an as yet unspecified cause, probably application of de-iceing chemicals, near Boulder, CO |
William M. Ciesla |
| 1402071 |
Damage |
Xylene is a chemical carrier present in some emulsifiable concentrate pesticides. When high rates of pesticides containing this chemical are applied under high pressure to young tobacco leaves, injury is very similar to a mild case of 2,4-D injury. The leaves are slightly narrower than normal and may have a glossy appearance, but are not as stiff as those with 2,4-D injury. |
R.J. Reynolds Tobacco Company Slide Set |
| 1402072 |
Damage |
Xylene is a chemical carrier present in some emulsifiable concentrate pesticides. When high rates of pesticides containing this chemical are applied under high pressure to young tobacco leaves, injury is very similar to a mild case of 2,4-D injury. The leaves are slightly narrower than normal and may have a glossy appearance, but are not as stiff as those with 2,4-D injury. |
R.J. Reynolds Tobacco Company Slide Set |
| 1402073 |
Damage |
Carbofuran can cause small, irregular, oval-shaped lesions to first appear on the bottom leaves and progress upwards, especially under dry conditions. The white-tan to brown-yellow lesions are first produced on the leaf margins, followed by numerous lesions between the veins on the entire leaf. With high chemical concentrations, the leaf edges may be cupped upwards or curled downwards and the leaves may be narrow or arrow-shaped. Stunted plants and premature flowering may also occur. Recommended rates and proper application methods may produce a mild flecking but rarely the severe symptoms. Other disorders such as weather fleck and other chemicals may produce similar symptoms. |
R.J. Reynolds Tobacco Company Slide Set |
| 1402076 |
Damage |
Oxamyl injury symptoms are very similar to the physiological disorder of frenching where affected plants develop a large number of leaves and suckers. The leaves are very narrow with prominent midribs. Interveinal chlorosis also occurs. |
R.J. Reynolds Tobacco Company Slide Set |
| 1402087 |
Damage |
Fatty alcohols turn smaller suckers brown soon after application. Leaf axils may also be burned by high concentrations of the chemical. Occasionally, buds of young plants may be killed. There may be contact-type burns on the tender, upper leaves. Damage is usually minor, but can be more severe if the concentration of the chemical is excessive or if application is made to wilted plants. Usually there will be burns along the edge or other portions of the leaf where the spray material collects. Leaf drop may occur at the lower part of the stalk if burn in the leaf axil is substantial, leaves are large, humidity is high, and certain disease organisms are present. Excessive nitrogen fertilizer contributes to these conditions. |
R.J. Reynolds Tobacco Company Slide Set |
| 1402088 |
Damage |
Maleic hydrazide, applied after topping to prevent sucker growth, inhibits cell division. If applied to immature plants, the younger leaves become narrow and pale green. Stalk elongation is slowed or halted. Application rate affects the degree of response. Applied at the correct rate and stage of plant development, the chemical has little visible effect on harvestable leaves, except for a slight yellowing of the upper leaves. Existing suckers at the time of treatment develop small, narrow leaves and are limited to growth. Suckers tend to develop at the bottom of the stalk as harvest nears completion. Excess rates will cause considerable yellowing, thickening, and drooping of the tip leaves. |
R.J. Reynolds Tobacco Company Slide Set |
| 1402089 |
Damage |
Maleic hydrazide, applied after topping to prevent sucker growth, inhibits cell division. If applied to immature plants, the younger leaves become narrow and pale green. Stalk elongation is slowed or halted. Application rate affects the degree of response. Applied at the correct rate and stage of plant development, the chemical has little visible effect on harvestable leaves, except for a slight yellowing of the upper leaves. Existing suckers at the time of treatment develop small, narrow leaves and are limited to growth. Suckers tend to develop at the bottom of the stalk as harvest nears completion. Excess rates will cause considerable yellowing, thickening, and drooping of the tip leaves. |
R.J. Reynolds Tobacco Company Slide Set |
| 1402090 |
Damage |
Chlorpropham (Bud Nip®) is used for the prevention of late season suckers. It is applied to plants with fully expanded tip leaves. If applied earlier, the upper leaves exhibit more puckering than normal, which gives the leaves a "waffled" appearance. Suckers present at the time of treatment grow slowly and develop a rosette appearance, apparently because internode lengths are shortened. |
R.J. Reynolds Tobacco Company Slide Set |
| 1402091 |
Damage |
Flumetralin (Prime +®) is applied at the late button to early flower stage of plant development to prevent sucker growth. If applied earlier, the tip leaves not removed by topping may exhibit symptoms similar to those caused by mosaic virus. There will be splotches of light and dark green leaf tissue. These young leaves may curl downward and do not fully expand. Buds of immature plants and affected suckers may cease growth. The tip end of the two outer leaves of each sucker may bend outward. Yellow residue of the chemical may be observed for several days after application. Occasionally, pith tissue will differentiate into adventitious buds, which appear as clusters of very small suckers. Suckers that escape contact with Prime+® will continue to grow. |
R.J. Reynolds Tobacco Company Slide Set |
| 1440076 |
Damage |
Small irregular, oval- shaped lesions with a white-tan to brown-yellow appear on the margins of the bottom leaves. The lesions may progress to involve the entire interveinal area of the leaf as well as move up the plant, especially under dry conditions. With high concentrations of the chemical, the leaf edges may cup upward or curl downward, and the leaves may be narrow and arrow shaped. Stunting of the plants and premature flowering may also occur. Injury symptoms may be similar to those of manganese toxicity or triazine herbicide damage. Recommended rates and proper application may produce a mild flecking but rarely causes serious injury. |
R.J. Reynolds Tobacco Company Slide Set |
| 1440084 |
Damage |
Xylene is a chemical carrier that is present in some emulsifiable concentrate pesticides. When high rates of pesticides containing this chemical are applied under high pressure to young tobacco leaves, injury similar to a mild case of 2,4-D injury may be sustained. Leaves affected by xylene are slightly narrower than normal and may have a glossy appearance. Though similar to 2,4-D injury leaves affected by xylene are not as stiff. |
R.J. Reynolds Tobacco Company Slide Set |
| 1440085 |
Damage |
Other chemical substances such as oils, solvents, fuels, and diluents may cause injury to tobacco through foliar contact. This contact may result in darkening of tender leaf areas, distortion of the leaf, or the formation of necrotic areas on the leaf. Holes may appear in the leaf if the tissue is killed. Severe exposure may result in the loss of turgor, and/or leaf drop; but under normal circumstances, later growth is not affected. |
R.J. Reynolds Tobacco Company Slide Set |
| 1440086 |
Damage |
Fatty alcohols (contact sucker control chemicals) turn small suckers brown shortly after application. Leaf axils may be burned by high concentrations of these alcohols. Buds of young plants may be killed. Leaf burn may be observed, particularly along the outer edge of tender upper leaves. Damage from these burns is usually minor, but it can be severe if the concentration of the chemical is excessive or the application is made to wilted plants. Leaf drop, shown in above photo, may occur at the bottom of the plant if the leaf axils have been severely burned. |
R.J. Reynolds Tobacco Company Slide Set |
| 1440087 |
Damage |
Maleic hydrazide , applied after topping to prevent sucker growth, acts by inhibiting cell division. If it is applied to immature plants, the younger leaves become narrow and pale green, and stalk elongation is slowed or halted. Application of excessive rates may cause abnormal coloring and thickening of upper leaves as well as drooping of the tip leaves. The use of excessive pressure and/or improper nozzles may result in leaf scorch or burn, especially on hot days. Suckers existing on the plant at the time of application develop small, narrow leaves and are limited in growth. Application rate determines the response of the plant. |
R.J. Reynolds Tobacco Company Slide Set |
| 1442026 |
Damage |
symptons on red oak |
USDA Forest Service - Rocky Mountain Region Archive |
| 1442027 |
Damage |
symptoms on red oak |
USDA Forest Service - Rocky Mountain Region Archive |
| 1458070 |
Damage |
chlorine injury; June 1975 |
North Carolina Forest Service Archive |
| 1467030 |
Damage |
diesel fuel spill |
USDA Forest Service - Ogden Archive |
| 1467038 |
Damage |
diesel fuel spill |
USDA Forest Service - Ogden Archive |
| 1467213 |
Damage |
close up of 1467212 |
USDA Forest Service - Ogden Archive |
| 1467214 |
Damage |
boron damage |
USDA Forest Service - Ogden Archive |
| 1473070 |
Damage |
1960; Yellow foliage is normal fall color of aspen, the chemical damage (unknown pollutant, but probably sulfur dioxide) is the patch of dead trees at bottom of slope; 1960.
|
Rocky Mountain Research Station/Forest Pathology Archive |
| 1494018 |
Damage |
chemical burn on pecan |
University of Georgia Plant Pathology Archive |
| 1494131 |
Damage |
pecan So2 survey |
University of Georgia Plant Pathology Archive |
| 1494132 |
Damage |
pecan SO2 Survey |
University of Georgia Plant Pathology Archive |
| 1494135 |
Damage |
SO2 injury on left |
University of Georgia Plant Pathology Archive |
| 1494136 |
Damage |
Pecan SO2 Survey |
University of Georgia Plant Pathology Archive |
| 1494137 |
Damage |
SO2 injury |
University of Georgia Plant Pathology Archive |
| 5059017 |
Damage |
sulfur dioxide damage; point source |
Joseph O'Brien |
| 5076084 |
Damage |
Chlorothalonil burn. Light green, white or burned appearance that is associated with this fungicide in the latter stages of watermelon development. |
David B. Langston |
| 5331064 |
Damage |
|
Mary Ann Hansen |
| 5332018 |
Damage |
phytotoxicity due to Ridomil fungicide |
Mary Ann Hansen |
| 5332021 |
Damage |
phytotoxicity due to Captan fungicide |
Mary Ann Hansen |
| 5333026 |
Damage |
|
Mary Ann Hansen |
| 5335083 |
Damage |
Streptomycin injury |
Mary Ann Hansen |
| 5336019 |
Damage |
suspected fluoride injury |
Mary Ann Hansen |
| 5336020 |
Damage |
Flouride injury |
Mary Ann Hansen |
| 5336021 |
Damage |
suspected fluoride injury |
Mary Ann Hansen |
| 5336022 |
Damage |
suspected fluoride injury |
Mary Ann Hansen |
| 5336023 |
Damage |
suspected fluoride injury |
Mary Ann Hansen |
| 5336096 |
Damage |
Distortion of new growth from leachates of PVC or duct tape |
Mary Ann Hansen |
| 5337009 |
Damage |
growth regulator injury |
Mary Ann Hansen |
| 5337010 |
Damage |
Propane Injury: healthy = right, injured = left |
Mary Ann Hansen |
| 5337012 |
Damage |
Cycocel injury |
Mary Ann Hansen |
| 1504099 |
Damage |
Ammonia injury (pipeline break), sassafras |
Max Williamson |
| 1505002 |
Damage |
Ammonia damage, southern red oak |
Max Williamson |
| 1505003 |
Damage |
Ammonia damage, white oak |
Max Williamson |
| 1505004 |
Damage |
Ammonia damage, cherrybarkoak |
Max Williamson |
| 1505006 |
Damage |
Ammonia damage, post oak |
Max Williamson |
| 1505007 |
Damage |
Ammonia damage, 1 month post spill |
Max Williamson |
| 1505008 |
Damage |
Ammonia damage, shortly after break |
Max Williamson |
| 1505009 |
Damage |
Ammonia damage, aerial view |
Max Williamson |
| 1505010 |
Damage |
Ammonia damage, hillside damage |
Max Williamson |
| 1505011 |
Damage |
Ammonia damage, 2-3 mi downstream |
Max Williamson |
| 1505013 |
Damage |
Flouride injury; slash pine, brick plant source bk |
USDA Forest Service - Region 8 Archive |
| 1505014 |
Damage |
Flouride injury, birch |
USDA Forest Service - Region 8 Archive |
| 1505017 |
Damage |
SO2 injury, oak; Widows Creek |
USDA Forest Service - Region 8 Archive |
| 1505018 |
Damage |
SO2 injury, sumac |
USDA Forest Service - Region 8 Archive |
| 2253071 |
Damage |
Foliage "burn" due to dimethoate insecticide. |
USDA Forest Service Archive |
| 2253072 |
Damage |
Foliage "burn" due to dimethoate insecticide. |
USDA Forest Service Archive |
| 3037006 |
Damage |
injury to seedlings |
Robert L. Anderson |
| 1506051 |
Damage |
Calcium carbamate fume damage, spruce & birch |
USDA Forest Service - Region 8 Archive |
| 5356655 |
Damage |
Damage to corn plants caused by pesticide (dicamba). |
William M. Brown Jr. |
| 5356699 |
Damage |
2,4-D damage to a grapevine. |
William M. Brown Jr. |
| 5356758 |
Damage |
Herbicide damage to young corn plants. |
William M. Brown Jr. |
| 5356815 |
Damage |
Damage to winter wheat due to carryover of atrazine. |
William M. Brown Jr. |
| 5356816 |
Damage |
Damage to winter wheat due to carryover of atrazine. |
William M. Brown Jr. |
| 5356823 |
Damage |
Damage to a young grape vine due to 2,2-D. |
William M. Brown Jr. |
| 5356824 |
Damage |
Dry bean plants showing damage due to carryover of herbicides used on sugarbeets. |
William M. Brown Jr. |
| 5361266 |
Damage |
Fasciation of corn roots caused by herbicide damage. |
R.L. Croissant |
| 5362710 |
Damage |
Close-up view of crop oil damage to the leaf of a corn plant. |
Howard F. Schwartz |
| 5362711 |
Damage |
Close-up view of crop oil damage to the leaf of a corn plant. |
Howard F. Schwartz |
| 5362997 |
Damage |
Damage to dry bean plants caused by spraying 2,4-D directly onto the plants. |
Howard F. Schwartz |
| 5362998 |
Damage |
Damage to light red kidney bean plants caused by phenoxy herbicide. |
Howard F. Schwartz |
| 5362999 |
Damage |
Damage to a light red kidney bean plant due to phenoxy herbicide. |
Howard F. Schwartz |
| 5363001 |
Damage |
Phenoxy damage on light red kidney bean plants. |
Howard F. Schwartz |
| 5363002 |
Damage |
Phenoxy herbicide damage to leaves of a light red kidney bean plant. |
Howard F. Schwartz |
| 5364018 |
Damage |
Paraquat spot damage on a dry bean leaf. |
Howard F. Schwartz |
| 5364019 |
Damage |
Cupping of bean leaves due to phenoxy damage to the canopy. |
Howard F. Schwartz |
| 5364020 |
Damage |
"Cobra head" in a dry bean plant, a symptom of phenoxy damage to the leaves. |
Howard F. Schwartz |
| 5364021 |
Damage |
Strapped leaves in a dry bean plant - a symptom of phenoxy damage. |
Howard F. Schwartz |
| 5364022 |
Damage |
Swollen branches of a bean plant, a symptom of damage from phenoxy drift into the field. |
Howard F. Schwartz |
| 5364023 |
Damage |
Soil excavated from the bases of dry bean plants to show squarestem disease and damage to roots caused by phenoxy drift or carryover to the bean field. |
Howard F. Schwartz |
| 5364024 |
Damage |
Damage to the canopy of dry bean plants resulting from phenoxy drift into the field. |
Howard F. Schwartz |
| 5365329 |
Damage |
Damage to dry bean plants caused by drift of phenoxy herbicides. |
Howard F. Schwartz |
| 5365330 |
Damage |
Damage to dry bean plants caused by drift of a phenoxy herbicide. |
Howard F. Schwartz |
| 5365331 |
Damage |
Damage to dry bean plants caused by the drift of a phenoxy herbicide. |
Howard F. Schwartz |
| 5366451 |
Damage |
Soil sterilant damage to a conifer in a suburban yard. |
William Jacobi |
| 5366454 |
Damage |
Soil sterilant damage to a tree in a suburban yard. |
William Jacobi |
| 5366458 |
Damage |
Damage to grape leaves from use of a phenoxy herbicide. |
Mike Schomaker |
| 5366641 |
Damage |
Paraquat damage to field corn. |
William M. Brown Jr. |
| 5372788 |
Damage |
Injury- chemical |
Division of Plant Industry Archive |
| 5372789 |
Damage |
Injury-chemical |
Division of Plant Industry Archive |
| 5372790 |
Damage |
|
Division of Plant Industry Archive |
| 5372764 |
Damage |
|
Division of Plant Industry Archive |
| 5372765 |
Damage |
|
Division of Plant Industry Archive |
| 5395018 |
Damage |
crop oil injury |
Rebekah D. Wallace |
| 5395019 |
Damage |
crop oil injury |
Rebekah D. Wallace |
| 5395020 |
Damage |
crop oil injury |
Rebekah D. Wallace |
| 1506050 |
Facility |
Chimneys - 800 ft - no SO2 removal; Keystone Station |
USDA Forest Service - Region 8 Archive |
| 1494143 |
Facility |
Possible source of SO2 near damaged orchard |
University of Georgia Plant Pathology Archive |
| 5356757 |
Inspection |
Elmer Rothman inspecting herbicide damage to field corn. |
William M. Brown Jr. |
| 1525076 |
Symptoms |
Chemical injury |
Department of Plant Pathology Archive |
| 4912056 |
Symptoms |
|
Petr Kapitola |
| 5337013 |
Symptoms |
Cycocel injury |
Robert Wick |
| 1496235 |
Symptoms |
SO2 injury apple |
University of Georgia Plant Pathology Archive |
| 5372787 |
Symptoms |
|
Division of Plant Industry Archive |
| 5372791 |
Symptoms |
|
Division of Plant Industry Archive |
| 5372792 |
Symptoms |
|
Division of Plant Industry Archive |
| 5372793 |
Symptoms |
|
Division of Plant Industry Archive |
| 5372794 |
Symptoms |
|
Division of Plant Industry Archive |
| 5368377 |
Symptoms |
Burley tobacco leaves with large spots with a water-soaked margin seen more clearlyon the bottom side of the leaves. Image is of the top side of the leaves. Azoxystrobin (fungicide) injury. |
Paul Bachi |
| 5368378 |
Symptoms |
Burley tobacco leaves with large spots with a water-soaked margin seen more clearlyon the bottom side of the leaves. Image is of the bottom side of leaves. Azoxystrobin (fungicide) injury. |
Paul Bachi |
| 5372707 |
Symptoms |
|
Division of Plant Industry Archive |
| 5372708 |
Symptoms |
|
Division of Plant Industry Archive |
| 5372709 |
Symptoms |
|
Division of Plant Industry Archive |
| 5372762 |
Symptoms |
|
Division of Plant Industry Archive |
| 5372763 |
Symptoms |
|
Division of Plant Industry Archive |
