Oomycota- Peronosporales-Albugo-White Rusts

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Spinach White Rust.White rust (Albugo candida) is a common but usually not serious disease. Local infection appears as pustules or "blisters" filled with sporangia on leaves, smaller stems, and floral parts. Pustules measure approximately 1-2mm in diameter and are white or creamy yellow. Systemic infections result in abnormal growth, distortion, and sterility of flowers or inflorescences. These abnormalities (or hypertrophy) are known as stagheads and consist mostly of thick-walled oospores.

White rust

Spinach White Rust.White rust (Albugo candida) is a common but usually not serious disease. Local infection appears as pustules or "blisters" filled with sporangia on leaves, smaller stems, and floral parts. Pustules measure approximately 1-2mm in diameter and are white or creamy yellow. Systemic infections result in abnormal growth, distortion, and sterility of flowers or inflorescences. These abnormalities (or hypertrophy) are known as stagheads and consist mostly of thick-walled oospores.

White rust (Albugo candida) on honesty (Lunaria annua) leaf

White rust (Albugo candida) on honesty (Lunaria annua) leaf

White blister rust Albugo candida pustules on upper leaf surface of old cauliflower plant - Stock Image

White blister rust Albugo candida pustules on upper leaf surface of old cauliflower plant - Stock Image

White blister rust Albugo candida on honesty Lunaria annua leaf - Stock Image

White blister rust Albugo candida on honesty Lunaria annua leaf - Stock Image

White blister rust Albugo candida on honesty Lunaria annua leaf - Stock Image

White blister rust Albugo candida on honesty Lunaria annua leaf - Stock Image

White blister rust Albugo candida on cabbage leaf underside - Stock Image

White blister rust Albugo candida on cabbage leaf underside - Stock Image

Blister rust Albugo sp blisters on the underside of a sunflower leaf - Stock Image

Blister rust Albugo sp blisters on the underside of a sunflower leaf - Stock Image

White rust, Albugo bliti, blisters on the upper surface of amaranth or pigweed leaves, Amaranthus retroflexus, - Stock Image

White rust, Albugo bliti, blisters on the upper surface of amaranth or pigweed leaves, Amaranthus retroflexus, - Stock Image

White rust (Albugo candida) on honesty (Lunaria annua) leaf - Stock Image

White rust (Albugo candida) on honesty (Lunaria annua) leaf - Stock Image

White rust, Albugo bliti, blisters on the upper surface of amaranth or pigweed leaves, Amaranthus retroflexus, - Stock Image

White rust, Albugo bliti, blisters on the upper surface of amaranth or pigweed leaves, Amaranthus retroflexus, - Stock Image


Περισσότερες ιδέες
White rust (Albugo candida) on mustard

White rust (Albugo candida) on mustard

Asexual reproduction (Albugo candida/White Rust of Conifers)

Asexual reproduction (Albugo candida/White Rust of Conifers)

white rust: common name usually used for diseases caused by Oomycetes in the genus Albugo (Albugo candida on a brassica leaf).

white rust: common name usually used for diseases caused by Oomycetes in the genus Albugo (Albugo candida on a brassica leaf).

Albugo candida - asexual sporangia from host

Albugo candida - asexual sporangia from host

Phragmidium mucronatum p. disciflorum(rugina la trandafir)

Phragmidium mucronatum p. disciflorum(rugina la trandafir)

Best Plants for Fall Color! This guide makes it easy to learn what to plant to have gorgeous fall colors! #fall #trees

Best Plants for Fall Color

Best Plants for Fall Color! This guide makes it easy to learn what to plant to have gorgeous fall colors! #fall #trees

A healthy happy Clematis is a fast grower and is filled with flowers so to keep your plant in good shape you must feed it properly. In spring you will need a low nitrogen fertilizer such as 5-10-10. This should be done once the bulbs are 2 inches long. Alternate feedings every 4 to 6 weeks with a balanced 10-10-10 fertilizer

A healthy happy Clematis is a fast grower and is filled with flowers so to keep your plant in good shape you must feed it properly. In spring you will need a low nitrogen fertilizer such as 5-10-10. This should be done once the bulbs are 2 inches long. Alternate feedings every 4 to 6 weeks with a balanced 10-10-10 fertilizer

Blanket Flower  A tough prairie plant, gaillardia blooms all summer and into fall. Its flamboyant flowers are usually marked with bright shades of red and yellow.  Name: Gaillardia 'Kobold'  Conditions: Full sun and well-drained soil  Size: To 3 feet tall  Zones: 3-8

The Best Drought-Tolerant Perennials

Blanket Flower A tough prairie plant, gaillardia blooms all summer and into fall. Its flamboyant flowers are usually marked with bright shades of red and yellow. Name: Gaillardia 'Kobold' Conditions: Full sun and well-drained soil Size: To 3 feet tall Zones: 3-8

hanging-basket-2-050913  how to keep hanging baskets from drying out

hanging-basket-2-050913 how to keep hanging baskets from drying out

Flower Rocket - The effortless way to grow flowers!   For less than $4 per pot you can enjoy colorful annuals all summer long by slipping the pod in a pot of soil, then water.

Flower Rocket - The effortless way to grow flowers! For less than $4 per pot you can enjoy colorful annuals all summer long by slipping the pod in a pot of soil, then water.

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