Billede: Tangerine Tree Infected with Huanglongbing (Citrus Greening Disease)

Tilgængelige versioner af dette billede

De billedfiler, der kan downloades nedenfor, er mindre komprimerede og har højere opløsning - og dermed højere kvalitet - end de billeder, der er indlejret i artikler og sider på dette websted, som er mere optimerede med hensyn til filstørrelse for at reducere båndbreddeforbruget.

Almindelig størrelse (1,536 x 1,024)

• AVIF (135 KB)
• WebP (327 KB)
• JPEG (603 KB)

Stor størrelse (3,072 x 2,048)

• AVIF (317 KB)
• WebP (800 KB)
• JPEG (1.8 MB)

Meget stor størrelse (4,608 x 3,072)

• AVIF (462 KB)
• WebP (1.2 MB)
• JPEG (3.2 MB)

Ekstra stor størrelse (6,144 x 4,096)

• AVIF (609 KB)
• WebP (1.8 MB)
• JPEG (5 MB)

Komisk stor størrelse (1,048,576 x 699,051)

• Uploader stadig... ;-)

Billedbeskrivelse

This high-resolution landscape photograph shows a tangerine tree in an orchard suffering from Huanglongbing (HLB), also known as citrus greening disease. The tree occupies most of the foreground, its dense canopy extending horizontally across the frame. Instead of the healthy deep-green foliage expected from a vigorous citrus tree, the leaves display irregular yellow and green mottling, a classic symptom of HLB infection. The discoloration appears uneven and patchy across many branches, giving the canopy a speckled yellow-green appearance that contrasts strongly with the darker foliage of nearby trees in the background.

Clusters of fruit hang throughout the branches. Many of the tangerines appear abnormal: their surfaces are blotchy and unevenly colored, ranging from dull green to yellowish orange with brown or darkened spots. Several fruits look misshapen or slightly lopsided, another common characteristic of citrus greening. Their skin texture appears rougher than normal, and some fruits display patches of dark scarring. The fruit does not show the bright, uniform color typical of healthy ripe tangerines, reinforcing the visual impact of the disease on crop quality.

Below the tree, the ground is scattered with fallen citrus fruit in various stages of decay. Some lie intact but discolored, while others appear shriveled or partially rotting. Dry leaves and orchard debris surround the fallen fruit, forming a textured layer on the soil. This accumulation suggests premature fruit drop, another sign frequently associated with Huanglongbing infection.

The scene is illuminated by soft natural daylight, likely during a clear or lightly overcast day. The lighting highlights the texture of the leaves and fruit while maintaining realistic color tones. The background reveals additional citrus trees arranged in rows, slightly blurred to emphasize the diseased tree in the foreground. Their darker green foliage contrasts with the affected tree, making the symptoms more visually apparent.

Overall, the image presents a detailed and realistic depiction of the agricultural impact of Huanglongbing. The mottled leaves, misshapen fruit, and fallen citrus on the ground together illustrate the progressive decline of an infected tangerine tree. The photograph captures both the biological symptoms of the disease and the broader orchard context, making it a clear visual representation of how citrus greening affects tree health, fruit quality, and productivity.

Billedet er relateret til: Growing Tangerines: The Complete Guide to Sweet Success in Your Home Garden