| 1573370 |
lightning |
|
|
| 1573171 |
lightning |
|
Cross section of lower stem showing symptoms of lightning damage. July 1997 |
| 1402069 |
lightning |
|
Damage is usually in a circular pattern in the field. Plants nearest the strike will suddenly wilt and may die. Whole plants or individual leaves on plants in the surrounding area may also wilt. Some leaves will have black or shriveled midribs and veins. Areas of lamina may pucker because growth of the midribs or veins is reduced. The stalk may be hollow, or the pith may be disced with irregular separations. The pith remains white which differentiates lightning damage from black shank and hollow stalk. |
| 1402070 |
lightning |
|
Damage is usually in a circular pattern in the field. Plants nearest the strike will suddenly wilt and may die. Whole plants or individual leaves on plants in the surrounding area may also wilt. Some leaves will have black or shriveled midribs and veins. Areas of lamina may pucker because growth of the midribs or veins is reduced. The stalk may be hollow, or the pith may be disced with irregular separations. The pith remains white which differentiates lightning damage from black shank and hollow stalk. |
| 1235003 |
lightning |
|
|
| 1402068 |
lightning |
|
Damage is usually in a circular pattern in the field. Plants nearest the strike will suddenly wilt and may die. Whole plants or individual leaves on plants in the surrounding area may also wilt. Some leaves will have black or shriveled midribs and veins. Areas of lamina may pucker because growth of the midribs or veins is reduced. The stalk may be hollow, or the pith may be disced with irregular separations. The pith remains white which differentiates lightning damage from black shank and hollow stalk. |
| 1402067 |
hail |
|
Minor damage consists of small rounded tears in the leaf. Heavier hail may rip the leaves to shreds, break leaves off the stalk, and even break stalks. |
| 1436055 |
lightning |
|
|
| 1235091 |
lightning |
|
|
| 1440071 |
lightning |
|
Injured plants show a darkened area from the ground upward along one side of the stalk into the midribs of the leaves. Affected portions of the veins turn black and shrink, giving the leaf a puckered or gathered appearance. The roots do not show evidence of injury. If a stalk is split after it has dried somewhat. It may be hollow, or the pith may be separated into colorless discks with a layered effect. The pith remains white which differentiates lightning damage from black shank. Some plants in the center of the strike area may be killed, with less severe injury in scattered plants. Lightning injury is often mistaken for disease damage. |
| 1440072 |
lightning |
|
Injured plants show a darkened area from the ground upward along one side of the stalk into the midribs of the leaves. Affected portions of the veins turn black and shrink, giving the leaf a puckered or gathered appearance. The roots do not show evidence of injury. If a stalk is split after it has dried somewhat. It may be hollow, or the pith may be separated into colorless discks with a layered effect. The pith remains white which differentiates lightning damage from black shank. Some plants in the center of the strike area may be killed, with less severe injury in scattered plants. Lightning injury is often mistaken for disease damage. |
| 1440070 |
lightning |
|
Injured plants show a darkened area from the ground upward along one side of the stalk into the midribs of the leaves. Affected portions of the veins turn black and shrink, giving the leaf a puckered or gathered appearance. The roots do not show evidence of injury. If a stalk is split after it has dried somewhat. It may be hollow, or the pith may be separated into colorless discks with a layered effect. The pith remains white which differentiates lightning damage from black shank. Some plants in the center of the strike area may be killed, with less severe injury in scattered plants. Lightning injury is often mistaken for disease damage. |
| 1440069 |
hail |
|
Hail damage consists of tears in the leaf web and broken leaves and stalks. Damage may vary greatly among fields or within a given field depending on the severity of the weather conditions. Tobacco damaged later than the normal lay-by time is usually handled as a normal crop. Wind can damage leaves or cause partial or complete blowdown. Early topping reduces late season blowdown. Tobacco blown down after topping should be "stood up" or harvested immediately to prevent loss of leaves. Wind damage following water soaking of the leaves from the underside (wind frazzle) can resemble hail injury but differs in that usually no veins are broken. |
| 1497039 |
lightning |
|
Tobacco lightning damage |
| 1497044 |
lightning |
|
Lightning |
| 1497047 |
lightning |
|
Lightning |
