Effect of Potato Leafhopper Injury on Yield and Quality of Resistant and Susceptible Alfalfa Clones123

Kindler, S. D.; Kehr, W. R.; Ogden, R. L.; Schalk, J. M.

doi:10.1093/jee/66.6.1298

Cited by 30 publications

(18 citation statements)

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“…When this occurs, photoassimilates transported through the phloem build up around the injured site (Johnson 1934;Hibbs et al 1964;Nielsen et al 1990Nielsen et al , 1999, and rates of photosynthesis are reduced (Womack 1984, Flinn et al 1990). Thus, leafhopper feeding initiates a cascade of changes in alfalfa, and ultimately, the injury is expressed as "hopperburn," a characteristic yellowing of leaves (Ball 1919) as well as delayed plant maturity, reduced nutritive components, stunted growth, and reduced yields (Kindler et al 1973, Hower 1989, Hutchins and Pedigo 1989.…”

mentioning

confidence: 99%

Patterns of Starch Accumulation in Alfalfa Subsequent to Potato Leafhopper (Homoptera: Cicadellidae) Injury

2005

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mentioning

confidence: 99%

Patterns of Starch Accumulation in Alfalfa Subsequent to Potato Leafhopper (Homoptera: Cicadellidae) Injury

2005

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“…Because of their small size and mobility, potato leafhoppers are frequently not detected in alfalfa before visual signs of injury, "hopperburn," has become apparent (Ball 1919, Byers et al 1977, Faris et al 1981. Potato leafhopper feeding causes reductions in dry matter (Hower andFlinn 1986, Hutchins andPedigo 1990), plant height (Nielsen et al 1990), crude protein (Kindler et al 1973, Nielsen et al 1990, and carotene (Kindler et al 1973). The process by which potato leafhoppers feed and the type of plant tissues they select have been implicated in causing hopperburn and the corresponding losses in yield and quality , Nielsen et al 1990.…”

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confidence: 99%

Contact-Induced Emigration of Potato Leafhopper (Homoptera: Cicadellidae) from Alfalfa–Forage Grass Mixtures

Roda¹,

Landis²,

Miller³

1997

Environmental Entomology

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Studies were conducted to evaluate the mechanisms leading to increased potato leafhopper, Empoasca fabae (Harris), emigration from alfalfa-forage grass mixtures. A laboratory behavioral bioassay was used to measure daily emigration rates of adult leafhoppers from alfalfa, Medicago sativa L.; smooth bromegrass, Bromus inennis Leyss.; orchardgrass, Dactylis glom.erata L.; and timothy. Phlewn pratense L., alone and in 1:1 mixtures of each grass with alfalfa. Emigration was "=9-foldgreater from pure bromegrass and orchardgrass treatments versus alfalfa alone, and "=5-foldgreater than from mixtures of alfalfa and each grass species. In a 2nd experiment, alfalfa and forage grasses were separated by a barrier permeable to plant volatiles. Only 31% of the potato leafhoppers placed on alfalfa adjacent to either alfalfa or grass emigrated. However, when introduced to the side containing a forage grass, <85% of the leafhoppers emigrated, regardless of adjacent plant. Thus, stimuli obtained from physical contact with the grass versus grass volatiles alone were required to elicit emigration. Observations of potato leafhoppers on single plants of smooth bromegrass, orchardgrass, and alfalfa revealed that individuals fed on all 3 species; however, the frequency and duration of probing differed as did mean residency time (10.7 h alfalfa, 7.5 h bromegrass, 5.9 h orchardgrass). These experiments suggested that physical contact is necessary to elicit emigration from grasses. By increasing emigration, alfalfa-forage grass mixtures may reduce potato leafhopper damage to alfalfa. Additionally,intercropping with forage grasses may lower the number of feeding bouts on alfalfa and reduce subsequent hopperbum.

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“…Insetos fitossucívoros (cigarrinhas, cochonilhas, percevejos e pulgões) se alimentam do líquido nutritivo de plantas e provocam amarelecimento nas folhas (GRANOVSKY 1928), reduzem o crescimento e componentes nutritivos da planta (KINDLER et al 1973, HOWER 1989, HUTCHINS & PEDIGO 1989.…”

Section: Resultsunclassified

Perdas causadas por Coccus viridis (Hemiptera: Coccidae) em mudas de Coffea arabica L.

et al. 2009

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E N t o m o l o g I a g E r a lResumo. Coccus viridis (Green) danifica plantas jovens e adultas de Coffea arabica Linnaeu. No entanto, nada se sabe sobre a magnitude dos danos causados por esta praga. Assim, este trabalho teve por objetivo estudar as relações entre o ataque de C. viridis e as perdas causadas por este inseto a C. arabica. Este trabalho foi conduzido em casa de vegetação na Universidade Federal de Viçosa. Foram utilizadas sementes da linhagem IAC 15 da variedade "Catuaí vermelho" de café (C. arabica). Para a confecção dos tratamentos esta praga foi criada em casa de vegetação separada do experimento. Os tratamentos foram: plantas infestadas e não infestadas por adultos e ninfas da cochonilha verde. As plantas foram nutridas com solução nutritiva. Durante 110 dias foram avaliados: números de adultos e de ninfas de primeiro, segundo e terceiro ínstares, área foliar, diâmetro do caule, altura das plantas em todas repetições. No final do experimento avaliou-se o peso das raízes, caule, folhas e total. Os pesos das raízes, matéria seca total, área foliar e diâmetro do caule de plantas não atacadas por C. viridis superaram em 1,31; 1,41; 1,50 e 8,93 vezes, respectivamente o peso de plantas atacadas. As variáveis selecionadas foram: diâmetro do caule (cm), área foliar (cm²), peso de raízes (g), ninfas, adultos e total das cochonilhas. Concluindo que a planta de C. arabica é afetada de forma diferente entre seus órgãos e que a ninfa de terceiro ínstar e adultos são as fases que mais causam danos a C. arabica. Palavras-Chave: Cafeeiro, Cochonilha verde, Danos, Produtividade Losses Caused by Coccus viridis (Green) (Hemiptera: Coccidae) on Seedlings of Coffea arabica L.Abstract. Coccus viridis (Green) cause losses on seedling and old plants of Coffea arabica (Green). However, nothing is known about of the damages caused by this pest. Thus, the objective of this work was to evaluate the relations between atack of C. viridis and the losses caused by this insect. on C. arabica. This work was conduced in greenhouse at Federal University of Viçosa. Seed coffee plants line IAC 15, variety "Catuaí vermelho" (C. arabica) were used. The insects were reared into greenhouse and separated of the experiment. The treatments were: infested plants and no infested by adults and nymphs of the green scale. The plants were nourished with compound nutrient solutions. For 110 days evaluated: numbers of adults and nymphs of instar first, second and third, leaf area, diameter of stem and plant height in all repetition. At the end of the experiment were evaluated weights of root, stem, leave and total. The weight of root, total dry matter, leaf area and diameter of the stem at plants no attacked by C. viridis were 1.31, 1.41, 1.50 and 8.93 times more than weight attacked plants, respectively. The main variables were: diameter of the stem (cm), leaf area (cm²), weights of root (g), nymphs, adults and all cochineals. Also, parts of the plant (C. arabica) were damaged by nymphs (third) and adults of C. viridis.

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Effect of Potato Leafhopper Injury on Yield and Quality of Resistant and Susceptible Alfalfa Clones123

Cited by 30 publications

References 0 publications

Patterns of Starch Accumulation in Alfalfa Subsequent to Potato Leafhopper (Homoptera: Cicadellidae) Injury

Patterns of Starch Accumulation in Alfalfa Subsequent to Potato Leafhopper (Homoptera: Cicadellidae) Injury

Contact-Induced Emigration of Potato Leafhopper (Homoptera: Cicadellidae) from Alfalfa–Forage Grass Mixtures

Perdas causadas por Coccus viridis (Hemiptera: Coccidae) em mudas de Coffea arabica L.

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