Navegando por Autor "Evangelista Júnior, Walter Santos"

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Avaliação de extratos de mamona Ricinus communis e do coité Crescentia cujete L. no controle de Aphis craccivora Koch (Hemiptera: Aphididae) em feijão caupi
(2019) Ferreira, Vandeilson Bezerra; Evangelista Júnior, Walter Santos; Nascimento, Antônio Henrique Cardoso do; http://lattes.cnpq.br/5216997634308364; http://lattes.cnpq.br/6728342264331935; http://lattes.cnpq.br/2799857312943263
Controlling agricultural pests is a practice that has been undergoing innovations constantly. The use of plant extracts appears as an alternative of pest control and is recommended mainly in family agriculture, and in fields of production mainly in organic agriculture, being a low cost product, easy to obtain and high effectiveness in pest control. The extracts of the plants of MamoneiraRicinuscommunisand CoitéCrescentiacujeteL. are promising in the natural control of pests, as they have toxic substances such as ricin, phenolic compounds and flavonoids, respectively. The objective of this work was to evaluate the effect of the extracts of these plants on the black aphid mortality of the common bean Aphis craccivora(Hemiptera: Aphididae). Mamona and Coité extracts caused a high mortality on black bean aphid with rates of 74.69% and 70.23%, respectively. Comparing the black aphid mortality in the different extracts per day after the application of the extracts, it was verified that the Mamona extract had a higher mortality rate (84.86%) on the first day of evaluation and the second day had a coefficient of 81.3%. However, there was no difference between the plant extracts during the five days of evaluation and they differed from the control throughout the evaluation period, which reinforces the efficiency of the use of these extracts in the control of this pest, as well as the necessity of use of control methods. It is concluded that the plant extracts of Mamona and Coité are efficient in controlling the mortality of black aphid A. craccivoraand contribute to the management of this pest in family agriculture, organic and agroecologicalcrops.
Efeito residual do inseticida spinosad para lagartas da traça-do-tomateiro, Tuta absoluta (Meyrick) e ninfas do percevejo predador Podisus nigrispinus (Dallas)
(2001) Silva, Christian Sherley Araújo da; Torres, Jorge Braz; Oliveira, Marta Vasconcelos de; Evangelista Júnior, Walter Santos
Estudou-se a persistência do inseticida spinosad no controle da traça-do-tomateiro, Tuta absoluta e impacto sobre ninfas do percevejo predador, Podisus nigrispinus. Os experimentos foram conduzidos em casa-de-vegetação, utilizando-se plantas de tomate industriais var IPA-5 em floração. As avaliações procederam-se em cinco avaliações após a pulverização. Constatou-se mortalidade de largatas variando de 90,0; 62,5; 8,0: 3,4 e 5,0% para o spinosad e; 48,7; 44,0; 11,5; 4,0 e 0% para a abamectina, em 2, 72, 144, 288 e 576 h após à pulverização, respectivamente. Para ninfas do percevejo predador, verificou-se mortalidade de 15,0; 5,0; 0; 4,0 e 11,2% para o spinosad e; 18,7; 10,2; 35,0; 18,7 e 0% para a abamectina, respectivamente. O inseticida spinosad mostrou-se eficiente no controle da traça-do-tomateiro até o terceiro dia após pulverização e destacou-se, em relação à abamectina. Considerando a mortalidade de ninfas do predador entre 2 a 576 h após aplicação, ambos inseticidas podem ser classificados como de baixo impacto, de acordo com o IOBC (International Organization for Biological Control - Work Groups) para as condições de semicampo.
Extratos da algarobeira como alternativa de controle do pulgão preto do feijoeiro Aphis craccivora
(2018) Vieira, Domingos Sávio Marques de Menezes; Evangelista Júnior, Walter Santos; http://lattes.cnpq.br/6728342264331935; http://lattes.cnpq.br/7384301568742851
The extracts of plants are recommended in family agriculture, characterized by small and medium producers, mainly related to the organic production. One way of obtaining compounds or plant substances is through the isolation of active principles or specific chemical group with insecticidal action, among them the alkaloids. The Prosopis juliflora algarobeira presents several substances with insecticidal and antifungal properties. Thus, the objective of this research was to evaluate the insecticidal effect of the alcoholic and aqueous extracts of algarobeira leaves on the black aphid of the common bean Aphis craccivora (Hemiptera: Aphididae). The experiment was carried out in the UAST experimental area. Statistical analyzes were performed by analysis of variance, using the Tukey test with significance level at 5% probability, using the Sisvar 5.6 (2011) computational package. It was observed that the dosages of FAT (100, 50, 25 and 10 mL / L) did not present significant toxicity, where there was no mortality of A. craccivora. Using the aqueous extract of the algaroba, a mortality ranging from 5.94% and 30.12% of the black aphid was observed. It is concluded that the algaroba extract presented low efficiency on the mortality of A. craccivora.
Horta comunitária com produção agroecológica de hortaliças
(2022-06-02) Lima, Carlos Henrique dos Santos; Evangelista Júnior, Walter Santos; Silva Filho, Eliezer Gomes da; http://lattes.cnpq.br/4642234077345292; http://lattes.cnpq.br/6728342264331935
Levantamento fitossanitário em sistemas de produção agroecológica de hortaliças
(2021-04-07) Sá, Lael Menezes de; Evangelista Júnior, Walter Santos; http://lattes.cnpq.br/6728342264331935; http://lattes.cnpq.br/5679363179932756
Monitoramento da mosca dos estábulos Stomoxys calcitrans em estabelecimentos avícolas na Zona da Mata e Agreste de Pernambuco
(2024-03-08) Cavalcante, Vinícius da Silva; Evangelista Júnior, Walter Santos; http://lattes.cnpq.br/6728342264331935; http://lattes.cnpq.br/4278548565008491
Uso do caulim no controle do pulgão preto do feijoeiro Aphis craccivora Koch (Hemiptera:Aphididae)
(2019-07-16) Maciel, Thiago Nunes; Evangelista Júnior, Walter Santos; http://lattes.cnpq.br/6728342264331935
The present work had as objective to evaluate the effect of kaolin on the aphid Aphis craccivora black control Koch of the bean. The experiment was conducted in the experimental area of the academic unit of Serra Talhada, Universidade Federal Rural de Pernambuco in the municipality of Serra Talhada-PE. Evaluated the effect of kaolin on prevention of aphid infestation black and your effect on mortality of aphid in screenhouse nursery. As it was decided to split the methodology experiment in two steps, in both was used the variety of cowpea "Paulistinha", in the first step to evaluate the efficiency of kaolin as preventive agent was conducted in random blocks design where the treatments consisted of weekly sprays (i) kaolin and scatter adhesive, (ii) only scatter adhesive and (iii) witness (water), enough to cover the whole aerial part of plants, in the second stage in order to evaluate the effect of kaolin on the black aphid mortality the experiment was carried out in completely randomized design, being made manually infestation plants 20 days after your emergency and after the establishment of the colony of aphids the treatments consisted of a single spraying with: (i) kaolin and scatter adhesive and (ii) water, and made scores of individuals living and dead every 24 hours until the fifth day after application. The black aphid a. craccivora presented high infestation in the field, all blocks and treatments with greater than 90% infestation, not showing differences between blocks and treatments. The percentage of infestation per week of black aphid bean cowpea plants showed that in every week (1-5) with larger infestations in the first two weeks with decreasing values ranging of 88.21% 93.91%, respectively. The kaolin presented toxic effect on the black bean aphid with mortality of approximately 20% a day after application. It is concluded that the application of the kaolin as preventive agent in the emergence of the black bean aphid showed no significant effects, not showed your effect on the occurrence and population growth of the aphid, the reduction of the infestation occurred in all treatments. On the other hand, the kaolin caused mortality of black aphid, under controlled conditions, on the first day after application, so applications with kaolin, every two days, will promote a black aphid control in Cowpea bean culture.