Time filter

Source Type

Reis P.R.,EPAMIG Sul de Minas EcoCentro | Reis Rebelles P.P.,Teste de Produtos Fitossanitarios em Agricultura Ltda | Pereira M.C.,Teste de Produtos Fitossanitarios em Agricultura Ltda | Liska G.R.,Federal University of Lavras | de Morais A.R.,Federal University of Lavras
Coffee Science | Year: 2015

The cicadas (Hemiptera; Auchenorryncha: Cicadidae) that attack coffee plants (Coffea spp.) belong to different species and Quesada gigas (Olivier, 1790) is the most frequently found. Mobile nymphs attack the root of the coffee, and the continuous sucking sap causes plants depletion, which manifests itself in the shoot by stunting, chlorosis and premature fall of the upper leaves of the branches. The symptoms are always more pronounced during droughts. The final consequences of the attack result in a decrease in production and even total loss of the crop, if the pest is not controlled in time. This study aimed to test the sulfur 90% (Sulfurgran® - Produquímica) in control of cicada nymphs Q. gigas when applied to soil surface and in the modalities incorporated into soil under projection of coffee plant canopies at the dosages of 30, 60 and 90 kg per hectare of the commercial product in comparison with the thiamethoxam + cyproconazole (Verdadero 600® WG - Syngenta) applied via drench in the lap of plants. Each plot consisted of ten plants, with eight central the useful part. The evaluation of efficiency was made by opening a trench in the soil, covering the entire region of the roots, and counting live nymphs number in two plants of the useful part of each plot. The results show that Sulfurgran® product controlled the cicada, at all doses in both ways of application, and did not differ from Verdadero 600 WG®. © 2015, Editora UFLA. All rights reserved. Source

Neto M.P.,EPAMIG Sul de Minas EcoCentro | Reis P.R.,EPAMIG Sul de Minas EcoCentro | Silva R.A.,EPAMIG Sul de Minas EcoCentro | Zacarias M.S.,Embrapa Cafe EPAMIG Sul de Minas EcoCentro
Coffee Science | Year: 2015

The control of pests, diseases and weeds become an obstacle to food production in an organic system. Studies demonstrate that the management of weeds in coffee decreases the number of insects with the potential to become pests and provides increased natural enemies, and consequently keeps the pests at low levels, without causing damage. Of pest mites, Oligonychus ilicis (McGregor), Brevipalpus phoenicis (Geijskes) and Polyphagotarsonemus latus (Banks) are those that can cause significant losses to coffee production. Aimed to evaluate the effect of management of adventitious plants in diversity of mites in coffee (Coffea arabica L.) grown organically. The experiment consisted offive treatments and five repetitions in a randomized block design. On the experiment was accomplished four types of management of weeds between the lines, total mowing, mowing alternating between the lines, total manual weeding, hand weeding alternating between the lines and control (treatment without management). During 24 months were collected 25 coffee leaves on each replicate, packed in plastic bags and taken to the laboratory for extraction of dust mites by washing method. The resulting material was analyzed with a stereoscopic microscope and mites found were fixed on slides for identification, where possible, to the species level. Therefore, in general, the type weeds management positively influenced the number of predatory mite Euseius citrifolius Denmark and Muma. For predators Euseius concordis (Chant) and Neoseiulus benjamini (Schica), the absence of management of weeds was beneficial. The largest number of pest mites was observed on treatment with low diversity of weeds. © 2015, Editora UFLA. All rights reserved. Source

Reis P.R.,EPAMIG Sul de Minas EcoCentro | de Oliveira A.F.,EPAMIG Sul de Minas EcoCentro | Navia D.,Laboratory Of Quarentena Vegetal
Neotropical Entomology | Year: 2011

The mite Oxycenus maxwelli (Keifer) (Eriophyidae) is reported for the first time in Brazil infesting olive trees, Olea europaea. Specimens were found on seedlings at Maria da Fé, state of Minas Gerais, in 2007. Although minor symptoms were not noticed, significant damage to plants were observed. There is no reliable evidence of when the mite could have been introduced. It is believed that the mite occurs since the first introductions of olive trees, around 1820, through vegetative propagating material, but the mite remained unnoticed due to the lack of studies with olive trees in Brazil. © 2011 Sociedade Entomológica do Brasil. Source

Prado E.,EPAMIG Sul de Minas EcoCentro | Santa-Cecilia L.V.C.,EPAMIG Sul de Minas EcoCentro | Reis P.R.,EPAMIG Sul de Minas EcoCentro | Mosca E.,EPAMIG Sul de Minas EcoCentro
Check List | Year: 2015

The Coffee Red Mealybug, Nipaecoccus coffeae (Hempel, 1919), was rediscovered in coffee crops in Brazil. Some brief recognition characters are provided to separate this mealybug from other species of the genus present in Brazil. It appears to be a rather uncommon parasite of coffee plants and is considered a secondary pest. This species is recorded for the first time in the State of Minas Gerais widening its distribution area. A predaceous hoverfly larva, Ocyptamus stenogaster (Williston, 1888), was also found predating eggs. © 2015, Check List and Authors. Source

Discover hidden collaborations