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Plant Disease, 1997 - present
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Browsing Plant Disease, 1997 - present by Title

Browsing Plant Disease, 1997 - present by Title

Now showing items 48-60 of 60

Rhizopus Rot of Jackfruit

Nelson, Scot (University of Hawaii, 2005-07)

Good field sanitation, pruning to encourage ventilation, and use of copper fungicides or other registered products are advised to control this rot.
Rhizopus Soft Rot of Sweetpotato

Nelson, Scot (University of Hawaii, 2009-02)

Symptoms on Okinawan sweetpotato are shown, and integrated practices designed to minimize losses to farmers and marketers are recommended.
Rust of Ko'oloa 'Ula (Abutilon menziesii)

Nelson, Scot (University of Hawaii, 2005-09)

This non-native rust fungus affects several native Hawaiian species of Abutilon.
Rust of Lemongrass

Nelson, Scot (University of Hawaii, 2008-11)

West Indian lemongrass (Cymbopogon citratus) is primarily grown as an ornamental and garden herb in Hawaii. This disease was first reported here in 1985; chemical control is limited to one registered product, the efficacy ...
Rusts of Acacia koa: Atelocauda digitata (Gall Rust)

Nelson, Scot (University of Hawaii, 2009-01)

This rust of the native Hawaiian forest tree Acacia koa causes a witches' broom symptom on branch terminals. Symptoms caused by the various spore types of the fungus are listed.
Shot Hole of 'Awa

Nelson, Scot (University of Hawaii, 2009-01)

This disease first caused significant kava crop losses in Hawaii in the early 2000s, as large monocrops were established. Management by variety choice, site selection, polycropping, and fungicide sprays is described.
Sooty Mold

Nelson, Scot (University of Hawaii, 2008-10)

These mold fungi do not infect plant tissues but feed on honeydew produced by sap-sucking insects; their damage is cosmetic, but they do reduce photosynthesis when covering leaf tissues. Examples of the mold on kava, noni, ...
Stem Bleeding of Coconut Palm

Nelson, Scot (University of Hawaii, 2005-09)

Stem wounding in a moist environment causes a conspicuous black stain seeping down from the wound.
Survey of Nematodes on Banana in Hawai'i, and Methods Used for Their Control

Wang, Koon-Hui; Hooks, Cerruti RR (University of Hawaii, 2009-06)

Spiral, burrowing, reniform, root-knot, and lesion nematodes are found on banana roots in Hawaii. Heavy infestations can cause significant yield reductions. Root-knot nematodes were found on all farms surveyed, but a ...
Tomato Spotted Wilt Virus on Anthurium

Uchida, Janice Y; Ogata, Desmond; Nagata, Norman (University of Hawaii, 1999-06)

TWSV, vectored by thrips, was noticed on anthurium; the publication describes the infection and shows the resulting water-soaked spots and blights on leaves.
Use of Living and Dying Mulches as Barriers to Protect Zucchini from Insect-caused Viruses and Phytotoxemias

Hooks, Cerruti R2; Wright, Mark G (University of Hawaii, 2008-01)

Cucurbit crops are affected by several insect-vectored virus disorders and phytotoxemias resulting from insect feeding. Results of a field experiment with zucchini in monoculture or interplanted with either a white clover ...
Volcanic Emissions Injury to Plant Foliage

Nelson, Scot; Sewake, Kelvin (University of Hawaii, 2008-08)

A new vent opened in Kilauea volcano on the island of Hawaii increased emissions of sulfur dioxide into the atmosphere in early 2008. The publication discusses the effects of the increased volcanic output on foliar injury ...
Zinc Deficiency in Tea (Camellia sinensis)

Nelson, Scot (University of Hawaii, 2006-10)

Sources of zinc for soil amendment are listed, and growers are cautioned against allowing the soil phosphorus level to increase due to excessive fertilizer applications.