169 research outputs found
Recomendações para o controle de pragas em hortas urbanas.
bitstream/CNPH-2010/36435/1/ct-80.pd
Recomendações técnicas para o controle de pragas do maxixeiro.
bitstream/item/128821/1/ct-93.pd
Use of serological techniques for determination of spodoptera frugiperda (J E Smith) predators (lepidoptera: noctuidae).
Inseticidas para controle da mosca-branca (Bemisia tabaci, biĂłtipo B) e redução da transmissĂŁo de begomovĂrus ao tomateiro.
Este trabalho tem como objetivos avaliar a eficiencia de inseticidas quĂmicos sintĂ©ticos no controle de adultos de mosca-branca e determinar seu potencial de interferencia na transmissĂŁo do begomovirus ao tomateiro
First Report of Cladode Brown Spot in Cactus Prickly Pear Caused by Neofusicoccum batangarum in Brazil
Cactus prickly pear (Nopalea cochenilifera) cladodes showing brown spot symptoms were collected of 18 fields of the State of Pernambuco, northeastern Brazil, from March to June 2014. The symptoms were prevalent in 100% of fields surveyed. Small pieces (4 to 5 mm) of necrotic tissues were surface sterilized for 1 min in 1.5% NaOCl, washed twice with sterile distilled water, and plated onto potato dextrose agar (PDA) amended with 0.5 g /liter streptomycin sulfate. Colonies morphologically similar to species of Botryosphaeriaceae were transferred to malt extract agar (MEA); five isolates (CMM 1424, CMM 1425, CMM 1426, CMM 1427, and CMM 1428) presented colonies forming concentric rings, and white mycelium becoming gray to gray-olivaceous after 5 days. Conidial characters were observed after growth on 2% water agar bearing sterilized pine needles for 3 weeks at 25°C under near-UV light. Conidiogenous cells holoblastic, hyaline, smooth, and cylindrical. Conidia were nonseptate, hyaline, smooth, fusoid to ovoid, thin-walled, 15.3 ± 1.4 Ă— 5.4 ± 0.6 µm (n = 50), L/W ratio= 2.8, which are morphological and cultural characteristics typical of Neofusicoccum spp. (Phillips et al. 2013). DNA sequencing of part of the elongation factor 1-alpha (EF1-α) gene and the internal transcribed spacer (ITS1-5.8S-ITS2 rDNA) region were conducted to identify the species as described by (Marques et al. 2013). Sequences of the isolates were 99% similar to those of N. batangarum for EF1-α (GenBank Accession Nos. FJ900653 and FJ900654) and ITS (FJ900607 and FJ900608).Instituto de PatologĂa VegetalFil: Conforto, Erica Cinthia. Instituto Nacional de TecnologĂa Agropecuaria (INTA). Instituto de PatologĂa Vegetal; ArgentinaFil: Bernardi Lima, Nelson. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Unidad de FitopatologĂa y ModelizaciĂłn AgrĂcola (UFyMA); ArgentinaFil: Bernardi Lima, Nelson. Universidade Federal Rural de Pernambuco. Departamento de Agronomia; BrasilFil: Garcete-GĂłmez, JosĂ© MarĂa. Universidade Federal Rural de Pernambuco. Departamento de Agronomia; BrasilFil: Câmara, M. P. S. Universidade Federal Rural de Pernambuco. Departamento de Agronomia; BrasilFil: Michereff, S. J. Universidade Federal Rural de Pernambuco. Departamento de Agronomia; Brasi
Species of Botryosphaeriaceae associated on mango in Brazil.
The aim of the present study was to assess diversity in the Botryosphaeriaceae on trees and fruit of mango (Mangifera indica L.) in a semi-arid region in northeastern Brazil in which most exported fruit in the country are produced
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