| 5440238 |
high soil ph |
|
|
| 5440239 |
high soil ph |
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|
| 5440237 |
high soil ph |
|
|
| 1402101 |
nutrient excess or toxicity (general) |
|
Chlorine Toxicity (Cl); There is evidence that 20-30 lb/a of Cl may improve tobacco yield. Higher rates may reduce growth and cause leaves to become abnormally green, thickened, and brittle, with cupped leaf margins. Leaves may have a distinctive smooth, sleek appearance. Toxicity symptoms are more common when ammonium rather that nitrate nitrogen is used. Maintaining soil pH about 5.7-6.0 reduces Cl uptake. Cured leaves have dingy, uneven colors and may tend to absorb excess moisture. |
| 1440093 |
nutrient excess or toxicity (general) |
|
Visual symptoms of Mn toxicity may develop when soil acidity reduces the soil pH to near 5.4 or less. Under these conditions, the lower leaves take on a mottled or chlorotic appearance. Light, greenish-yellow to pale white mottles occur between dark green areas along the veins. Also, leaves may appear to have a hard semi-glossy surface. If the soil pH continues to drop, mottles may be spread over the entire plant and growth will be stunted. Under extremely acid conditions, the availability of Mn increases and plants take up the nutrient to the extent that it becomes toxic, and plants may eventually die. Plants exhibiting Mn toxicity symptoms usually occur in spots or streaks within the field. Seldom will the entire field be affected. The problem is corrected with the proper use of lime. |
| 1440094 |
nutrient excess or toxicity (general) |
|
Visual symptoms of Mn toxicity may develop when soil acidity reduces the soil pH to near 5.4 or less. Under these conditions, the lower leaves take on a mottled or chlorotic appearance. Light, greenish-yellow to pale white mottles occur between dark green areas along the veins. Also, leaves may appear to have a hard semi-glossy surface. If the soil pH continues to drop, mottles may be spread over the entire plant and growth will be stunted. Under extremely acid conditions, the availability of Mn increases and plants take up the nutrient to the extent that it becomes toxic, and plants may eventually die. Plants exhibiting Mn toxicity symptoms usually occur in spots or streaks within the field. Seldom will the entire field be affected. The problem is corrected with the proper use of lime. |
| 1402093 |
nutrient excess or toxicity (general) |
|
Excessive nitrogen results in large plants and dark green leaves that are larger and thinner than normal. Leaves become thicker as they mature. Leaf maturity is delayed, curability is decreased, and sucker growth is increased. |
| 5367439 |
nutrient excess or toxicity (general) |
|
Hoof of a horse showing symptoms of selenium toxicity. |
| 5367876 |
nutrient excess or toxicity (general) |
|
The feet of a horse suffering from laminitis. |
| 5367877 |
nutrient excess or toxicity (general) |
|
Horse using a stance indicative of laminitis. |
| 5359749 |
nutrient excess or toxicity (general) |
|
Bark measles on an apple tree in Yemen (1990). |
| 5332071 |
manganese toxicity |
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| 5332072 |
manganese toxicity |
|
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| 1496296 |
boron toxicity |
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| 1496300 |
boron toxicity |
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| 1496311 |
manganese toxicity |
|
apple measles |
| 5076087 |
nutrient excess or toxicity (general) |
|
Manganese Toxicity on Cantaloupe; Undersides of leaves have water-soaked areas with small, necrotic, raised areas in the center of the water-soaked area. Bronzed, chlorotic areas on the upper leaf surface. Symptoms occur in patches in fields that have low pH. This allows Mn to achieve toxic levels. |
