Q:

What are some signs of tomato plant disease?

A:

Quick Answer

Signs of tomato plant diseases include halted growth, yellowing leaves, premature fruit ripening, dark spots on leaves, leaf curling and white scabby lesions on tomatoes. Symptoms vary according to the type of infection present. Additional evidence can present itself as sticky excrement on leaves, brown or black leaves, discolored roots and yellow rings or spots on tomatoes.

Continue Reading

Full Answer

Some diseases, such as curly top virus, are spread by parasitic bugs. In other cases, pests may not be the direct disease carrier, but they can leave plants open to infection when they eat and damage the plant's tissues. These bugs include beet leafhoppers, psyllids, flea beetles, whiteflies, aphids and tomato or tobacco hornworms. Diseases such as early blight, Fusarium wilt, Septoria leaf spot, Fusarium crown rot and root rot are caused by fungal infections. Cucumber mosaic virus, tomato spotted wilt virus and impatiens necrotic spot virus are common viral infections that affect the roots, leaves and fruits of tomato plants. Cankers on plant stems and vascular discoloration can be caused by a bacterial infection. Sometimes, the cause of plant decay is not caused by an infection, but by competition for resources from weeds, poor air circulation, phosphorus deficiencies, high nitrogen levels, inadequate sunlight and substandard watering practices.

Learn more about Botany

Related Questions

  • Q:

    What is a leaf identification chart?

    A:

    A leaf identification chart aids in the identification of trees by visual examination of the characteristics of their leaves. The typical leaf identification chart is divided into sections for various types of leaves, including simple and compound leaves, needles and scale-like leaves.

    Full Answer >
    Filed Under:
  • Q:

    What are some signs of an emerald ash borer infestation?

    A:

    Signs of emerald ash borer infestation in ash trees include the thinning and death of upper branches in the canopy and sometimes new sprouts emerging from the trunk after upper parts of the trees die. The bark may split open, and woodpecker activity may remove patches of bark. When larvae turn into adult beetles and emerge, they create tiny D-shaped exit holes in the trees.

    Full Answer >
    Filed Under:
  • Q:

    How does chlorophyll make a leaf look green?

    A:

    Chlorophyll, a type of pigment, makes leaves look green because it reflects light that falls in the green part of the visible light spectrum while absorbing other wavelengths of light. Chlorophyll molecules are classified as “photoreceptors,” meaning that they capture light energy and transfer it to molecules that transform it into chemical energy. There are three main types of chlorophyll that work together to collect as much energy as possible.

    Full Answer >
    Filed Under:
  • Q:

    What are the uses of the guava leaf?

    A:

    Guava leaves are ingested in pill or tea form as a weight loss aid, to lower blood glucose levels in diabetics, to lower cholesterol, to treat diarrhea, to help treat dengue fever, to reduce allergies, to increase sperm production and to treat infection and wounds. In addition, guava leaves have been used topically to treat black spots and acne, to remove blackheads, as an anti-aging concoction and to relieve itchiness.

    Full Answer >
    Filed Under:

Explore