Plant Protection Science, 2007 (vol. 43), issue 1
Viruses of blackthorn and road-bordering trees of plum, myrobalan, sweet and sour cherries in the Czech Republic
Jaroslav Polák
Plant Protect. Sci., 2007, 43(1):1-4 | DOI: 10.17221/2351-PPS 
The distribution of Plum pox virus (PPV), Prune dwarf virus (PDV), Prunus necrotic ringspot virus (PNRSV), Apple chlorotic ringspot virus (ACLSV) and Apple mosaic virus (ApMV) in naturally growing shrubs of blackthorn and road-bordering trees of plum and myrobalan, and of PPV, PDV, PNRSV and Cherry leafroll virus (CLRV) in sweet and sour cherry trees were investigated. The most widely distributed viruses were PPV in plums (74% of the investigated trees were infected); PPV, PDV, and PNRSV in myrobalans (26%, 11% and 18%, respectively), PDV in blackthorns (27%), and PDV and PNRSV in cherries (25%...
Inheritance of resistance to Cotton leaf curl virus in cotton (Gossypium hirsutum L.)
Azeem Iqbal Khan, Manzoor Hussain, Saeed Rauf, Tariq Manzoor Khan
Plant Protect. Sci., 2007, 43(1):5-9 | DOI: 10.17221/2347-PPS
Resistance to Cotton leaf curl virus (CLCuV) in three cultivars of cotton was investigated in crosses with a susceptible cultivar using generation mean analysis. No single gene of major effect controlled resistance to Cotton leaf curl virus in the three crosses. The mean number of effective factors controlling resistance in cross LRA-5166 × S-12 was estimated to be at least five. Estimates of broad and narrow sense heritability indicate that effects by the environment were larger than those of genetic components. Epistasis was significant in two crosses. Additive gene effects contributed more to resistance than to susceptibility in contrast...
Volutella leaf blight and stem canker on Japanese pachysandra in the Czech Republic
Ivana Šafránková
Plant Protect. Sci., 2007, 43(1):10-12 | DOI: 10.17221/2350-PPS
Woody ornamental cover plants of Japanese pachysandra (P. terminalis S. et Z.) are planted in parks and gardens in the Czech Republic. A serious disease of these plants is Volutella leaf blight and stem canker caused by the fungus Pseudonectria pachysandricola (anamorph Volutella pachysandricola). It was described by DODGE (1944) in the United States and appeared in Europe in the 1980s. Volutella pachysandricola was isolated from Japanese pachysandra (P. terminalis cvs. Green Carpet and Variegata) from leaf spots and stem and stolon cankers in Brno in 2000-2003. The tan or brown spots with brown margins, often with...
Effect of seed treatment and foliar protection with fungicides on health status of winter wheat
Zuzanna Sawinska, Irena Małecka
Plant Protect. Sci., 2007, 43(1):13-18 | DOI: 10.17221/2260-PPS
The experiments were conducted in 2001-2003 at the Experimental Station in Zlotniki of the Agricultural University of Poznan (Poland). The impact of different fungicidal protection programs on occurrence and incidence of fungal diseases on leaf and ear as well as of diseases on stem base and roots of winter wheat was determined. Infections on stem base and roots were mostly caused by Fusarium spp. and Gaeumannomyces graminis. Seed treatment with Latitude 125 FS reduced significantly take-all of winter wheat in comparison with the standard treatment (Raxil 060 FS). However, the seed treatments lowered only slightly the incidence of...
Combining the botanical insecticides NSK extract, NeemAzal T 5%, Neemix 4.5% and the entomopathogenic nematode Steinernema feltiae Cross N 33 to control the peach fruit fly, Bactrocera zonata (Saunders)
Mahmoud Farag Mahmoud
Plant Protect. Sci., 2007, 43(1):19-25 | DOI: 10.17221/2348-PPS
Botanical insecticides based on azadirachtin and the entomopathogenic nematode Steinernema feltiae were evaluated for their control of the peach fruit fly, Bactrocera zonata. Laboratory bioassays determined the potential of combinations between the biological control agent S. feltiae and the botanical insecticides NSK, NeemAzal T 5%, Neemix 4.5% against 3rd instar larvae of B. zonata. Of 25 treatment combinations between azadirachtin from NSK extract and S. feltiae, 18 gave synergistic responses, 4 were additive, none antagonistic and 3 without any response. The same number of combinations with NeemAzal T 5% showed 19 synergistic...
Some notes on the occurrence of plant parasitic nematodes of fruit trees in Slovakia
Marta Lišková, Nicola Sasanelli, Trifone D'addabbo
Plant Protect. Sci., 2007, 43(1):26-32 | DOI: 10.17221/2349-PPS
Forty plant parasitic nematode species were identified in soil of fruit orchards in the southeastern and southwestern areas of the Danubian Lowlands and East Slovak Lowland, characterised by light sandy soil of riverine origin, locally combined with drift sand landscape. They were Ditylenchus dipsaci, Helicotylenchus canadensis, H. digonicus, H. dihystera, H. multicinctus, Rotylenchus agnetis, R. fallorobustus, R. goodeyi, Rotylenchulus borealis, Pratylenchus crenatus, P. penetrans, P. pratensis, P. thornei, Zygotylenchus guevarai,...
Eightieth Birthday of Dr. Jens Nielsen - Biographical Notice
Pavel Bartoš, Václav Kůdela, Aleš Lebeda
Plant Protect. Sci., 2007, 43(1):33-34 | DOI: 10.17221/2259-PPS