Effect of Nitrogen Fertility on Reproduction and Development of Citrus Mealybug,<i>Planococcus citri</i>Risso (Homoptera: Pseudococcidae), Feeding on Two Colors of Coleus,<i>Solenostemon scutellarioides</i>L. Codd

Hogendorp, Brian K.; Cloyd, Raymond A.; Swiader, John M.

doi:10.1603/0046-225x-35.2.201

Cited by 55 publications

(51 citation statements)

References 27 publications

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“…These morphological barriers are composed of waxes, complex carbohydrates, and long-chain proteins, whose contents in the leaves decrease with the application of high doses of nitrogen during fertilization (MARSCHNER, 1995;PHELAN et al, 1996;TAIZ;ZEIGER, 2010). Hogendorp et al (2006) reported that an increase in nitrogen fertilization led to an increase in the attack frequency and reproduction of the citrus mealybug, Planococcus citri (Risso) (Hemiptera: Pseudococcidae), on coleus, Solenostemon scutellarioides. However, plants that are deficient in nitrogen can allocate a higher amount of carbon for the production of plant defense secondary compounds (HERMANS; MATTSON, 1992).…”

Section: Thementioning

confidence: 99%

Nitrogen fertilization in the contents of secondary compounds in cassava cultivars

Gazola

Zucareli

Ringenberg

et al. 2018

SCA

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The production of chemical substances is a strategy of plants to defend against the attack of pest insects. The synthesis of secondary compounds in plants is influenced by genotype and cultural management, such as the use of nitrogen fertilizers. Thus, the objective of this work is to evaluate the effect of doses of nitrogen fertilizer over time on the production of secondary compounds in two industrial cassava cultivars. The experiment was carried out in a greenhouse (25 ± 5 °C) of Embrapa Soybean in Londrina, Paraná, with the cultivation of potted plants (4l) in a 2 × 4 × 3 factorial scheme, with five replications. Two genotypes of industrial cassava ('Baianinha' and 'Caiuá') and four different nitrogen doses (0, 30, 60, and 90 kg ha -1 ) were used, with sampling at 15, 30, and 45 d after fertilization. Nitrogen fertilization was performed 50 d after sprouting. In the apical leaves, the levels of rutin, caffeic, p-coumaric and ferulic acids were evaluated in a high performance liquid chromatograph (HPLC). Exploratory analyses were performed on the data variables to verify the assumptions for analysis of variance (ANOVA), such as the independence and normality of errors, homogeneity of treatment variances and non-additivity of the model (they were submitted to analysis of homogeneity and normality, respectively. After these tests, ANOVA and Tukey's test (p ≤ 0.05) were performed. For the quantitative data concerning the N rates, regression study analyzes were performed. The Caiuá cultivar was found to have a higher ferulic acid content. The caffeic acid content decreased over time after the application of N in both cultivars. The rutin content in both cultivars did not increase with an increase in nitrogen dose. At a dose of 90 kg ha -1 , both cultivars presented a lower p-coumaric acid content after 30 d. Key words: Caffeic acid. P-coumaric acid. Ferulic acid. Defensive compounds. Manihot esculenta. Rutin. ResumoA produção de substâncias químicas é uma estratégia de defesa das plantas ao ataque de insetos praga. A síntese de compostos secundários em plantas é influenciada pelo genótipo e pelo manejo cultural, como o uso de fertilizantes nitrogenados. Deste modo, o trabalho tem como objetivo avaliar o efeito de doses de nitrogênio sobre a produção de compostos secundários em duas cultivares industriais de mandioca ao longo do tempo. O experimento foi realizado em casa de vegetação semiclimatizada (25°±5°C) da

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Section: Thementioning

confidence: 99%

Nitrogen fertilization in the contents of secondary compounds in cassava cultivars

Gazola

Zucareli

Ringenberg

et al. 2018

SCA

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“…Mealybug life history parameters may also be influenced by the levels of nitrogen fertilization and leaf nitrogen concentration; high nitrogen concentrations were shown to lead to enhanced performance of the citrus mealybug, P. citri (Hogendorp et al 2006). The antibiotic resistance of two varieties of cassava to the cassava mealybug increased with the addition of nitrogen (Leru et al 1994).…”

Section: The Origin Of Mealybug Pest Statusmentioning

confidence: 99%

Novel Approaches for the Management of Mealybug Pests

Franco¹,

Zada

Mendel

2009

Biorational Control of Arthropod Pests

137

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“…Nitrogen is one of the most important factors in development of phytophagous insects (Lu et al, 2007). Populations of many insect species have been reported to increase significantly with higher nitrogen level (Dale, 1988;Chau et al, 2003;Throop and Lerdau, 2004;Hogendorp, 2006;Lu and Heong, 2009;El-Zahi et at., 2012). There is a scope of greater population buildup of BPH (Preap et al, 2001;Lu and Heong, 2009) resulting in a higher tendency for outbreaks in high nitrogen applied rice fields (Uhm et al, 1985;Hosamani et al, 1986;Li et al, 1996).…”

Section: Introductionmentioning

confidence: 99%

Effect of Nutrient Management on Population Growth of Brown Planthopper, Nilaparvata lugens (Stål)

et al. 2014

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Brown planthopper (BPH), Nilaparvata lugens (Stål) is a major insect pest of rice in Bangladesh. Nutrient management in rice received little attention on BPH population. The present study evaluated the consequences of nitrogen (N), phosphorus (P) and potassium (K) application on population build up and weight of BPH in the laboratory and net-house at Entomology Division, Bangladesh Rice Research Institute. Three levels of soil nitrogen (0, 100, 200 kg N ha -1 ), phosphorus (0, 20, 40 kg P2O5 ha -1 ) and potassium (0, 60, 120 kg K2O ha -1 ) were compared for individual and combined effects. Interactions of N, P and K demonstrated no significant effect on population growth and weight of BPH. However, interaction of N and P showed significant effect on population growth of BPH. Fertilization with nitrogen increased population and dry weight of BPH. Phosphorus fertilization markedly increased the population growth while high potassium application decreased population build up and dry weight of BPH.

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Effect of Nitrogen Fertility on Reproduction and Development of Citrus Mealybug,Planococcus citriRisso (Homoptera: Pseudococcidae), Feeding on Two Colors of Coleus,Solenostemon scutellarioidesL. Codd

Cited by 55 publications

References 27 publications

Nitrogen fertilization in the contents of secondary compounds in cassava cultivars

Nitrogen fertilization in the contents of secondary compounds in cassava cultivars

Novel Approaches for the Management of Mealybug Pests

Effect of Nutrient Management on Population Growth of Brown Planthopper, Nilaparvata lugens (Stål)

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