Feeding Preference of Melon Thrips on Orchids in Hawaii

Hata, T. Y.; Hara, A. H.; Hansen, James D.

doi:10.21273/hortsci.26.10.1294

“…Currently, growers are battling issues with pesticide resistant populations that have the ability to decimate entire nurseries, this includes: T. palmi, F. occidentalis, Chaetanaphothrips orchidii (Moulton) (anthurium thrips), and Chaetanaphothrips signipennis (Bagnall) (banana rust thrips). Thrips are especially difficult to control due to their short life cycle, parthenogenetic reproduction, and their preference of hiding deep inside blossom and petals, making contact with pesticides challenging (Hata et al 1991). Additionally, thrips pupae evade treatment as they are usually found in the soil and growing media, requiring carefully timed insecticide applications occurring in succession (Hollingsworth et al 2001).…”

Section: Current Management Challengesmentioning

confidence: 99%

The Beneficial Effects of Soluble Silicon Fertilizer in <em>Dendrobium</em> Orchids: Silicon-Augmented Resistance against Damage by Insect Pests and Fungal Pathogens

Bloese,

Galanti,

Porter

et al. 2024

Preprint

0

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The effects of soluble silicon fertilization on monocots and dicots have been widely studied. However, little is known regarding its effects on protecting epiphytes against insect and fungal pests. The efficacy of silicon fertilizer to reduce damage by thrip pest complexes, namely: Thrips palmi Karny, Frankliniella occidentalis Pergande, Chaetanaphothrips orchidii Moulton, and Chaetanaphothrips signipennis Bagnall (Thysanoptera: Thripidae), and fungal pathogens: Botrytis cinerea Persoon (Helotiales: Sclerotiniaceae) and Fusarium spp. Link (Hypocreales: Nectriaceae) was examined during a nine-month greenhouse trial in Hawaii. The trial assessed yield, quality, and pest damage across three common varieties of dendrobiums. All replicates received additional soluble silicon fertilizer applications alternating weekly between soil drench and foliar (50 mg Si/plant) applications. Yield, quality, and spray length, pest damage, plant vigor, SPAD, and leaf temperature were measured. Data were analyzed using a generalized linear model (glm) with repeated measures followed by post-hoc pair-wise comparisons in R, version 4.3.1. Treatment effects were significant at P

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“…Currently, growers are battling issues with pesticide-resistant populations that have the ability to decimate entire nurseries, which include: T. palmi, F. occidentalis, Chaetanaphothrips orchidii (Moulton) (anthurium thrips), and Chaetanaphothrips signipennis (Bagnall) (banana rust thrips). Thrips are especially difficult to control due to their short life cycle, parthenogenetic reproduction, and their preference of hiding deep inside the blossom and petals, making contact with pesticides challenging [25]. Additionally, thrips pupae evade treatment as they are usually found in the soil and growing media, requiring carefully timed insecticide applications occurring in succession [26].…”

Section: Current Management Challengesmentioning

confidence: 99%

The Beneficial Effects of Soluble Silicon Fertilizer in Dendrobium Orchids: Silicon-Augmented Resistance against Damage by Insect Pests and Fungal Pathogens

Bloese,

Galanti,

Porter

et al. 2024

Insects

1

0

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The effects of soluble silicon fertilization on monocots and dicots have been widely studied. However, little is known regarding its effects on protecting epiphytes against insect and fungal pests. The efficacy of silicon fertilizer to reduce damage by thrips pest complexes, namely: Thrips palmi Karny, Frankliniella occidentalis Pergande, Chaetanaphothrips orchidii Moulton, and Chaetanaphothrips signipennis Bagnall (Thysanoptera: Thripidae), and the fungal pathogens: Botrytis cinerea Persoon (Helotiales: Sclerotiniaceae) and Fusarium spp. Link (Hypocreales: Nectriaceae) was examined during a nine-month greenhouse trial in Hawaii. The trial assessed yield, quality, and pest damage across three common varieties of dendrobiums. All replicates received additional soluble silicon fertilizer applications alternating weekly between soil drench and foliar (50 mg Si/plant) applications. Yield, quality, and spray length, pest damage, plant vigor, SPAD, and leaf temperature were measured. Data were analyzed using a generalized linear model (glm) with repeated measures followed by post-hoc pair-wise comparisons in R, version 4.3.1. Treatment effects were significant at p < 0.001 for the majority of the explanatory variables including: marketable yield, spray length, thrips damage, and fungal damage. Overall, the lavender variety (‘Uniwai Supreme’) benefited the most from silicon applications with a 73.0% increase in marketable yield, compared to the white variety (‘Uniwai Mist’), which had an increase of 50.6% marketable sprays in contrast to its untreated control. Si benefits conferred to the purple variety (‘Uniwai Royale’) were intermediate to the lavender and white varieties. Although the magnitude of Si benefits varied among the varieties, all dendrobium varieties significantly benefited from silicon fertilization.

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“…Some work has been conducted on eggplant, cowpea, maize, onion, cotton, cabbage, peanuts, wheat, chrysanthemums, and rice with the western ßower thrips being the most extensively studied species (Parrella and Lewis 1997). Limited information is available on resistance to the melon thrips in several Solanum species (Matsui et al 1995), pepper varieties (Nuessly and Nagata 1995), chrysanthemum (Miyashita and Soichi 1993) and orchids (Hata et al 1991). The current study sought to identify and document host plant resistance to melon thrips in beans.…”

mentioning

confidence: 99%

Resistance to <I>Thrips palmi</I> (Thysanoptera: Thripidae) in Beans

Cardona¹,

Frei²,

Bueno³

et al. 2002

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Resistance in beans, Phaseolus vulgaris L., to the melon thrips Thrips palmi Karny was studied under field conditions at two sites in Colombia. Genotypes were rated for resistance on the basis of visual damage scores, bean production ratings (a visual estimate of pod and seed set), and grain yields. Of 1,138 genotypes tested, only 60 (5.3%) were rated as resistant. Repeated testing allowed us to identify potential sources of resistance in five germplasm accessions (G 02402, G 02852, G 03177, G 03569, and G 04055), one commercial variety ('Brunca'), six elite breeding lines (A 216, DOR 714, EMP 486, FEB 115, FEB 161, and FEB 162), 41 recombinant inbred lines derived from the BAT 881 x G 21212 cross, and seven recombinant inbred lines derived from a cross between DOR 364 and BAT 477. Resistance was not associated with maturity, growth habit, pubescence, and seed color or seed size. In general, correlations between visual damage scores and bean production ratings and between damage scores and yield were high and significant meaning that selection on damage rating is useful to identify genotypes that may have tolerance as a mechanism of resistance. The continuous distribution of damage scores of 139 recombinant inbred lines suggested that the inheritance of resistance to the melon thrips might be quantitative. Overall, resistance levels in beans can be considered as moderate, because none of the genotypes tested received damage scores of <3 on a 1-9 scale and none was ever rated as highly resistant in terms of bean production ratings.

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Feeding Preference of Melon Thrips on Orchids in Hawaii

Cited by 13 publications

References 1 publication

The Beneficial Effects of Soluble Silicon Fertilizer in <em>Dendrobium</em> Orchids: Silicon-Augmented Resistance against Damage by Insect Pests and Fungal Pathogens

The Beneficial Effects of Soluble Silicon Fertilizer in <em>Dendrobium</em> Orchids: Silicon-Augmented Resistance against Damage by Insect Pests and Fungal Pathogens

The Beneficial Effects of Soluble Silicon Fertilizer in Dendrobium Orchids: Silicon-Augmented Resistance against Damage by Insect Pests and Fungal Pathogens

Resistance to <I>Thrips palmi</I> (Thysanoptera: Thripidae) in Beans

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