Final diagnosis


Various chemical injuries

The leaves of this seedling do not have lamina and they are curled upwards. Chemical injury
Distorted, curled leaves with serrated lamina edges. Chemical injury (herbicide injury)
The new leaves of this young plant are narrower, distorted and crinkled. Chemical injury
Several leaves have irregular leaf margins; a foliar application of a fertiliser has burnt the bud. Chemical injury (herbicide injury)
All young formed leaves, are more or less chlorotic, slightly embossed and curled. Chemical injury
Chlorosis and necrosis of the basis of young leaves, they later remain fairly slender and curve gradually during the growth. Chemical injury
Very short internodes and small leaves curled upwards. Chemical injury (herbicide injury)
The newly formed young leaves are heavily twisted longitudinally and laterally. Chemical injury
Newly formed leaves, in addition to being slightly pinched, they turn white at the tip. Chemical injuries
A marked yellowing starting from lamina margins. Herbicide injuries
More or less marked interveinal chlorosis. Chemical injury (herbicide injury)
The tissues between the veins have a bright yellow colour that contrasts with all the veins remaining green. Herbicide injuries
Vein yellowing of lower leaves. Chemical injury (herbicide injury)
Irregular yellow spots between the veins, the leaf is deformed. Herbicide injuries
After having initially yellowed, several young leaves have bleached fairly quickly. Only a few veins remain green. Chemical injuries
After a treatment by acylon TC done in poor conditions yellowish to beige lesions can be observed on the lamina. Chemical injury
This leaf has received an overdose of pesticide; in addition to interveinal yellowing it is also markedly deformed at lamina margins. Chemical injury
When suckercides are used some drops may fall on the lamina and cause well defined yellow spots. Chemical injuries
On a lower leaf necrotic interveinal lesions can be observed. Chemical injury (herbicide injury)
Greyish, rather irregular spots, occasionally with whitish stains. Chemical injury
Well defined, yellowish to white spots, sometimes converging. Chemical injury
Some systemic herbicide absorbed by plants cause yellow spots between the veins, that quickly become necrotic. Chemical injuries
The whole lamina has been ragged by an overpowerful spray, only the main veins are left. Chemical injury
Several tobacco plants show one or many leaves with bleached or white lamina areas. <b>chemical injuries</b>
All tobacco plants of this plot are yellow. <B>Phytotoxicity</ b> (chemical injuries)