Desenvolvimento e crescimento populacional de Alabama argillacea em algodoeiro de fibra branca e colorida

Santos, Renato Lemos dos; Torres, Jorge B.; Bastos, Cristina Schettino

doi:10.1590/s0100-204x2008000400003

Cited by 7 publications

(7 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, Medeiros (2001) reported that the duration of the A, argillacea larval phase, when fed on cotton cultivar CNPA 7H leaves varied from 9.24 d (33°C) to 19.00 d (20°C). Santos et al (2008) reported that larval development on 'BRS 201' (11.8 d),'BRSVerde' (11.8d),and'Acala90' (11.6d) at25°C had similar values to those given in this report.…”

Section: Resultssupporting

confidence: 84%

“…Although parameters such as oviposition and reproduction were not evaluated in our study, the pupal weight is positively related with the formation of healthy adults and consequently increases the number of eggs and fertility (Creenberg et al 2001). In contrast, a reduction in pupal weight could bring a decrease in A. argillacea population density on cotton agroecosystems due to low egg viability (Santos et al 2008). These results indicate that A. argillacea is best adapted to survive on BRS Safira.…”

Section: Resultsmentioning

confidence: 88%

See 1 more Smart Citation

Feeding and Life History of Alabama argillacea (Lepidoptera: Noctuidae) on Cotton Cultivars Producing Colored Fibers

Nascimento

Ramalho

Azeredo

et al. 2011

Annals of the Entomological Society of America

View full text Add to dashboard Cite

Quantitative analysis of the consumption and use by herbivore pest's of the host plant is a common tool used for studying the interaction between insects and plants. Our goals were to quantify cotton leafworm, A/a¿)ama argillacea (Hübner) (Lepidoptera: Noctuidae), larval consumption rate in three cotton, Qos.njpium hirsutum L., cultivars that produce colored cotton fibers, and the effects of the consumption rate on A. argillacea pupal weight in greenhouse conditions. Larvae consumed a maximum of 0.69-1.03 g of leaf tissue over a 24-h period in all cultivars tested. Total consumption by A. argillacea larvae was highest when fed with 'BRS 200' leaves (2.89 g) and the lowest when fed with leaves from 'BRS Safira' (2.26 g). The regression analysis showed significant relationships between the quantity of leaf tissue consumed and pupal weights for each cotton cultivar. A. argillacea larvae fed on BRS 200 demonstrated a longer developmental period (14.84 d) than larvae fed on 'BRS Rubi' leaves (11.62 d) or BRS Safira (11.14 d). We concluded that BRS Safira presents the best quality food source for A. argillacea, BRS 200 is the worst, and BRS Rubí is intermediate. The longer developmental times of A. argillacea on BRS 200 may allow longer windows of opportunity for the use of biological control agents to reduce the damage caused by this pest and also would complete less generations per phenological cycle of the cotton crop.

show abstract

Section: Resultssupporting

confidence: 84%

Section: Resultsmentioning

confidence: 88%

Feeding and Life History of Alabama argillacea (Lepidoptera: Noctuidae) on Cotton Cultivars Producing Colored Fibers

Nascimento

Ramalho

Azeredo

et al. 2011

Annals of the Entomological Society of America

View full text Add to dashboard Cite

show abstract

“…In Southern-Central Brazil, it is considered a late pest (Oliveira et al 2008), but in the Northeast, with the exception of Bahia State, it attacks in the initial stages and can occur sporadically when the crop has matured. Alabama argillacea is the main defoliating pest in Brazilian cotton (Ramalho 1994;Santos et al 2008). A high-density infestation can adversely affect the cotton yield.…”

Section: Introductionmentioning

confidence: 99%

Food intake and utilization of Alabama argillacea (Hübner) (Lepidoptera: Noctuidae) fed on cotton cultivars with colored fibers

et al. 2010

View full text Add to dashboard Cite

The study investigated the development, survivorship, and food intake of cotton leafworm Alabama argillacea (Hübner) fed on three cotton cultivars with colored fibers. Significantly shorter larval life-span and higher pupal weight as well as higher survival rates were observed in A. argillacea fed on leaves of BRS Safira and BRS Rubí cotton cultivars compared with the BRS 200 cultivar (BRS = Brazil). Weight gain, feces, and food intake were higher in A. argillacea fed on leaves of BRS Safira compared with the BRS 200 cultivar. The cotton cultivar significantly affected all larval food intake and utilization indices for A. argillacea. The larvae of A. argillacea were more efficient (higher efficiency in converting ingested (ECI) and digested (ECD) food) when fed on leaves of the BRS Safira cultivar in comparison to the BRS 200 cultivar, since the larval phase was shortened and food intake was higher, resulting in a higher growth rate (RGR). However, A. argillacea larvae fed on the leaves of the BRS 200 cultivar, with lower ECI and ECD, exhibited a compensatory response, extending the duration of the larval phase and increasing food intake, resulting in a higher relative metabolic rate. We conclude that BRS Safira provides the best food quality for A. argillacea, BRS 200 the worst, and BRS Rubi plants of intermediate quality.

show abstract

“…O cultivo do algodoeiro herbáceo (Gossypium hirsutum L.) no Semiárido apresenta baixo uso de insumos agrícolas e é realizado, em sua maioria, por pequenos produtores, nos moldes da agricultura familiar (Santos et al, 2008b). Por isso, requer tecnologias de fácil adoção para o controle de pragas, que é fator limitante ao cultivo do algodão na Região, com destaque para o bicudo-do-algodoeiro, Anthonomus grandis Boh.…”

Section: Introductionunclassified

“…Por isso, requer tecnologias de fácil adoção para o controle de pragas, que é fator limitante ao cultivo do algodão na Região, com destaque para o bicudo-do-algodoeiro, Anthonomus grandis Boh. (Coleoptera: Curculionidae) (Ramalho, 1994;Santos et al, 2008b).…”

Section: Introductionunclassified

Época apropriada para a poda apical do algodoeiro para o controle de pragas

Neves

Torres

Silva

2010

Pesq. agropec. bras.

Self Cite

View full text Add to dashboard Cite

Resumo -O objetivo deste trabalho foi determinar a época apropriada para a realização da poda apical em algodoeiro. O trabalho foi realizado durante as safras de 2008 e 2009 (maio a novembro) em delineamento de blocos ao acaso, em dois ambientes, com as variedades: BRS 201, de fibra branca, e BRS Rubi, BRS Safira e BRS Verde, de fibra colorida, em Paudalho, PE; e BRS 201 e BRS Rubi, em Surubim, PE. A poda apical consistiu na retirada dos ápices das plantas com estruturas vegetativas e reprodutivas, em duas idades fenológicas: com 50% das maçãs maduras (poda I) e no surgimento dos primeiros capulhos (poda II). A poda I resultou em maior retirada de botões florais do que a poda II. Em ambas as podas, houve a retirada de cinco nós dos ponteiros.A produção e a qualidade de fibra não diferiram entre plantas podadas ou não. Um número significativo de estruturas atacadas foi eliminado pela poda. A poda apical é recomendada para reduzir o número de estruturas não produtivas, ao final da safra, que são utilizadas como hospedeiras de pragas.Termos para indexação: Gossypium hirsutum, algodão colorido, controle cultural, manejo integrado de pragas. Appropriate time for pruning cotton plant aiming at pest controlAbstract -The objective of this work was to determine the appropriate time to prune the terminal portions of the cotton plants. The work was carried out during 2008 and 2009 (May-November) growing seasons in a randomized block design in two environment, with the varieties: BRS 201, of white fibers, and the colored fiber varieties BRS Rubi, BRS Safira, and BRS Verde, in Paudalho, PE, Brazil; and BRS 201 and BRS Rubi, in Surubim, PE, Brazil. Pruning consisted in excising the apices with the vegetative and reproductive structures, at two plant ages: with 50% mature bolls (prune I), and at the opening of the first boll (prune II). Prune I resulted in greater excision of flower buds than prune II. In both prunings, five nodes from the plant apex were excised. Yield and fiber quality did not differ between pruned and nonpruned plants. A significant number of infested structures was removed by pruning. Pruning can be recommended to reduce nonproductive structures that can, at the end of the season, be used as hosts for important pests.

show abstract

Desenvolvimento e crescimento populacional de Alabama argillacea em algodoeiro de fibra branca e colorida

Cited by 7 publications

References 9 publications

Feeding and Life History of Alabama argillacea (Lepidoptera: Noctuidae) on Cotton Cultivars Producing Colored Fibers

Feeding and Life History of Alabama argillacea (Lepidoptera: Noctuidae) on Cotton Cultivars Producing Colored Fibers

Food intake and utilization of Alabama argillacea (Hübner) (Lepidoptera: Noctuidae) fed on cotton cultivars with colored fibers

Época apropriada para a poda apical do algodoeiro para o controle de pragas

Contact Info

Product

Resources

About