Plant Protection Science, 2011 (vol. 47), issue 1

Transmission of Chickpea chlorotic dwarf virus in Chickpea by the leafhopper Orosius albicinctus (Distant) in Pakistan - Short communication

Khalid Pervaiz AKHTAR, Mushtaq AHMAD, Tariq Mahmud SHAH, Babar Manzoor ATTA

Plant Protect. Sci., 2011, 47(1):1-4 | DOI: 10.17221/45/2009-PPS  

Chickpea chlorotic dwarf virus (CpCDV, genus Mastervirus, family Geminiviridae) is the most common viral disease of chickpea in Pakistan. Two aphid [Aphis craccivora Koch, Myzus persicae (Sulzer)], two leafhopper [Empoasca devastans Distant, Orosius albicinctus (Distant)] species and an unidentified brown leafhopper were collected in a chickpea field by hand and sweep nets for transmission studies of CpCDV. Transmission results showed that only the leafhopper O. albicinctus successfully transmitted the CpCDV from diseased to healthy chickpea plants. The presence of CpCDV in inoculated...

Sensitivity to fungicides in the isolates of Phytophthora infestans (Mont.) de Bary in the Czech Republic from 2003 to 2008

Jana Mazáková, Miloslav Zouhar, Pavel Ryšánek, Vladimír Táborský, Ervín Hausvater, Petr Doležal

Plant Protect. Sci., 2011, 47(1):5-12 | DOI: 10.17221/16/2010-PPS  

In the growing seasons from 2003 to 2008, 547 isolates of Phytophthora infestans from five regions in the Czech Republic were collected and examined for their sensitivity to the active ingredients (metalaxyl, dimethomorph and propamocarb-HCl) of frequently used fungicides. The response of the isolates to each of these substances was examined using the in vitro amended-agar method; in 352 of these isolates, the sensitivity to metalaxyl was also assessed by the floating leaf-disc assay. The majority of the isolates were sensitive (89.8%) to metalaxyl. Resistant isolates were found only in two of the sample years (2003 and 2008); they...

Phytophthora plurivora T. Jung & T. I. Burgess and other Phytophthora species causing important diseases of ericaceous plants in the Czech Republic

Marcela Mrázková, Karel Černý, Michal Tomšovský, Veronika Strnadová

Plant Protect. Sci., 2011, 47(1):13-19 | DOI: 10.17221/3108-PPS  

Ornamental nurseries, garden centres, public gardens and urban greenery in the Czech Republic were surveyed in 2006-2009 for the presence of Phytophthora spp. and the diseases they cause on ericaceous plants. Diseased plants such as Rhododendron spp., Pieris floribunda, Vaccinium sp., and Azalea sp. showed various symptoms including leaf spot, shoot blight, twig lesions or stem, root and collar rot. Nearly 140 Phytophthora isolates were collected from symptomatic plants in different areas of the country. Of the Phytophthora spp. on ericaceous plants or in their surroundings, P. plurivora appeared...

Contribution to the knowledge of diversity of Fusarium associated with maize in Malaysia

Mohd Zainudin Nur Ain Izzati, Abd Razak Azmi, Mohamed Sidique Siti Nordahliawate, Johari Norazlina

Plant Protect. Sci., 2011, 47(1):20-24 | DOI: 10.17221/52/2008-PPS  

The Fusarium species associated with maize are widely distributed in Malaysia. Eight Fusarium species were obtained in this country. A series of field samplings was conducted from 2006 to 2008, when 167 Fusarium isolates were obtained from maize plants in seven locations throughout Malaysia. The determination was based on micro- and macromorphological features (growth rates, colony features, mode of production of microconidia, macroconidia, conidiophores, and chlamydospores). F. proliferatum (29.9% isolates), F. semitectum (22.2% isolates), F. verticillioides (13.7% isolates), and F. subglutinans...

Influence of intercropping with spring cereals on the occurrence of pea aphids (Acyrthosiphon pisum Harris, 1776) and their natural enemies in field pea (Pisum sativum L.)

Marek SEIDENGLANZ, Igor HUŇADY, Jana POSLUŠNÁ, Anne-Kristin LŘES

Plant Protect. Sci., 2011, 47(1):25-36 | DOI: 10.17221/40/2010-PPS  

Occurrences of pea aphids and their natural enemies (syrphids, mummies caused by entomopathogenic fungi Beauveria sp. and by the parasitic wasp Aphidius ervi) were compared in monocultures and mixtures of field peas and spring cereals in three seasons (2008-2010). At the beginning of colonisation, the occurrence of aphids was not substantially influenced by intercropping with cereals. However, the numbers of pea aphids located on inflorescences started to decline earlier in mixtures compared with monoculture. More syrphids (eggs + larvae) were found in mixtures than in monoculture, and more syrphid eggs were found in young aphid colonies (10...

First records of the jumping plant-louse Acizzia jamatonica (Kuwayama) (Hemiptera: Sternorrhyncha: Psyllidae) in Slovakia and Greece

Pavel LAUTERER, Rastislav BARTOŠ, Panagiotis MILONAS

Plant Protect. Sci., 2011, 47(1):37-40 | DOI: 10.17221/18/2010-PPS  

The psyllid Acizzia jamatonica (Kuwayama, 1908), an introduced pest of the ornamental tree Albizia julibrissin Durazz., was found for the first time in Slovakia and Greece. In both countries it occurs in large numbers and reduces the aesthetic qualities as well as the health of the host plant.

M. Spencer, A. Lebeda (eds) - Mass Screening Techniques for Selecting Crops Resistant to Disease - Book Review

K. Veverka

Plant Protect. Sci., 2011, 47(1):42 | DOI: 10.17221/994-PPS  

Ing. Jan Smrž, CSc. (6.2.1921-28.1.2011)

J. Nedělník

Plant Protect. Sci., 2011, 47(1):44 | DOI: 10.17221/3107-PPS