Watermelon

Watermelon seeds or seedlings are attacked by soil insects, resulting in poor germination and thin plant stands. Seedlin...

Watermelon seeds infected with fungal pathogens before germination show discoloration, softening, and pre-emergent rot, ...

Watermelon seedlings develop water-soaked, brown lesions at or near the soil line, causing the stems to constrict and th...

Adult Red Pumpkin Beetles cause extensive feeding damage by chewing through cotyledons and young leaves of watermelon, l...

Clusters of small, soft-bodied aphids colonize the undersides of leaves and growing tips, causing leaf curl, yellowing, ...

Watermelon plants show sudden wilting during the day that does not recover at night, with yellowing and browning of olde...

Watermelon plants show poor fruit set, irregular vine growth, and reduced flowering response, indicating suboptimal horm...

Tiny white flies are visible on the undersides of leaves, causing yellowing, leaf curl, and sticky honeydew deposits on ...

Caterpillars feed voraciously on watermelon leaves, creating large, irregular holes or completely stripping leaves from ...

Watermelon leaves develop small, circular spots with tan or grayish centers and a darker brown border, which may merge u...

Bright red-orange beetles chew irregular holes in watermelon cotyledons and young leaves, leaving a ragged, lacy appeara...

Slender, pale white or cream-colored winding tunnels or mines are visible on the upper surface of watermelon leaves, cre...

Watermelon plants deficient in essential nutrients display yellowing of older or newer leaves depending on the specific ...

Thrips feed on the leaf surface and suck the plant juice causing small, silvery white or stippling spots on the leaves ...

Small, circular to irregular dark brown or tan spots with a yellow halo appear on watermelon leaves, often causing the a...

Whiteflies congregate on the undersides of watermelon leaves, causing yellowing, leaf curl, and reduced plant vigor due ...

Thrips cause silvery streaking, scarring, and distortion of watermelon leaves and flowers by rasping and sucking plant t...

Small, circular to angular reddish-brown spots with grayish centers appear on watermelon leaves, often surrounded by a y...

Angular, yellow to brown lesions appear on the upper leaf surface, limited by leaf veins, with a grayish-purple downy fu...

Dark, sunken, water-soaked lesions appear on leaves, stems, and fruit of watermelon, which later develop a salmon-pink s...

Small, dark brown, circular to oval spots with concentric rings and yellow halos appear on watermelon leaves, petioles, ...

Watermelon leaves infested with aphids show downward curling, puckering, and a sticky honeydew deposit that promotes bla...

Red Pumpkin Beetles feed on watermelon leaves and cotyledons, creating large, ragged holes that weaken or kill young pla...

White, winding, serpentine mines are etched across the upper surface of watermelon leaves where leaf miner larvae have f...

Water-soaked lesions develop on watermelon stems near the soil line, soon turning brown and exuding a sticky, amber-colo...

Watermelon plants treated with plant growth regulators may show abnormal leaf curling, unusually compact internodes, or ...

Female fruit flies puncture the skin of developing watermelons to lay eggs, causing small, water-soaked entry wounds tha...

Watermelon leaves develop small, water-soaked spots that enlarge into dark brown to black circular lesions, often with y...

Small, dark brown to black circular spots with concentric rings appear on leaves, stems, and sometimes fruit of watermel...

Bright red-orange beetles with black spots chew large, irregular holes in watermelon leaves, cotyledons, and tender shoo...

Irregular silvery-white serpentine trails or blotches are visible on the upper leaf surface of watermelon, caused by fly...

Watermelon fruits develop soft, water-soaked areas on the rind that rapidly expand and turn brown to black, often covere...

Watermelon vines exhibit pale yellowing, purpling of leaf margins, or stunted growth depending on which fertilizer nutri...

Watermelon stems show dark, water-soaked cankers that ooze a characteristic gummy amber exudate, and the surrounding tis...

Tiny puncture marks and oviposition scars are visible on the rind of watermelon fruit, surrounded by soft, sunken, and d...

Angular, yellow to pale green water-soaked patches appear on the upper surface of watermelon leaves, bounded by leaf vei...