Time filter

Source Type

Bornova, Turkey

Salama H.S.,Plant Protection | Abd-Elgawad M.M.M.,National Research Center of Egypt
Archives of Phytopathology and Plant Protection | Year: 2010

The distribution and abundance of red palm weevil (Rhynchophorus ferrugineus) within palm tree-infected stems at Ismaelia governorate, Egypt, were investigated. Taylor's power law was fit (P ≤ 0.01) to its larvae, pupae and/or adults. The slope value of this power law indicated the clumped distribution of these insect stages. Sample size optimisation needed to achieve a predetermined level of sampling error for the insect stages was calculated. Also, soil samples were taken after uniform application of entomopathogenic nematode Heterorhabditis bacteriophora strain EG1 to the soil under citrus tree canopies at the rate of 104 infective juveniles/400 cm2 plots, and assayed for the nematode using the Galleria bait method. At the first and second sampling dates, the nematode displayed contagious distribution and attained mean insect mortality of 15.3 and 4, respectively. At the third date of sampling, the nematode showed random distribution according to chi-squared test and caused 1.8 mean insect mortality. Evaluation of H. bacteriophora EG1 as a biocontrol measure for the weevil was discussed based on their investigated dispersion indices. © 2010 Taylor & Francis. Source

Sen F.,Ege University | Altun A.,Ege University | Kinay Teksur P.,Plant Protection
Acta Horticulturae | Year: 2013

Increasing pomegranate production in the world requires appropriate conditions to preserve quality during prolonged storage and transport. Modified atmosphere (MA) packaging provides long storage period, maintains fruit quality and reduces decay development for four months or more after harvest. There are different types of bags used for pomegranate with different quality. In this study, the effects of a preharvest spray program and different MA packaging materials were evaluated on the quality and decay development of 'Hicaznar' pomegranate. Four different MA packages were used on unsprayed and sprayed fruit. Fruit were packed into modified atmosphere packing and stored at 6°C for four months. Decay development and quality parameters were examined at two months intervals. One of the local made MA packing materials was found to be not able to maintain the fruit quality even at the second month of storage. However, the combination of preharvest spraying program and three different MA packages gave almost the same results in terms of pomegranate quality. The decay development was also very high on unsprayed fruit packed with local MA packaging material. The decay development on sprayed fruit was almost inhibited at preharvest stage and for two months in MA packaging. Source

Ripka G.,Plant Protection | Szabo A.,Corvinus University of Budapest
Acta Phytopathologica et Entomologica Hungarica | Year: 2011

Authors made regular mite collectings between 1990 and 2010 on ornamental trees and shrubs, on streets, parks, in city greenery, forests, botanical gardens and private gardens, in various localities of Hungary. Belonging to 6 families, 16 species are reported. New mesostigmatid, prostigmatid and astigmatid mite records and hosts records are presented. Source

Ripka G.,Plant Protection
Acta Phytopathologica et Entomologica Hungarica | Year: 2011

Partial results of 19 years of mite collecting on ornamental trees and shrubs, on streets, in parks, in greenery, in botanical gardens and private gardens, in various localities of Hungary are included here. During this survey a new genus, Adventacarus n. gen. and two new species were collected: Adventacarus turulae n. sp. and Abacarus kôrösicsomai n. sp. are described and illustrated from Phyllostachys viridiglaucescens. Both species appeared to be vagrant without causing apparent injuries to the host. The importance of gnathosomal chaetotaxy in the systematics of the eriophyoid mites is emphasized. A new tribe, Adventacarini n. tr. is proposed. Source

Khan A.A.,University of Sargodha | Khan A.M.,National Institute for Biotechnology and Genetic Engineering NIBGE | Tahir H.M.,University of Sargodha | Afzal M.,University of Sargodha | And 3 more authors.
African Journal of Biotechnology | Year: 2011

The current study was conducted to determine the influence of wheat cultivars on aphids and their coccinellid predator populations. Five cultivars of wheat (99T007, BK-2002, TW0135, INQLAB and CHAKWAL-97) were sown at Arid Zone Research Institute, Bhakkar during 2006. The INQLAB-91 appeared to be the most resistant cultivar, whereas 99T007 appeared to be the most susceptible one for aphid infestations. The 4 th week of February was found to be very favourable for aphids in wheat fields in the study area. The highest and lowest populations of coccinellid predators (all species) were recorded on TW0135 and 99T007 cultivars, respectively. The highest population of coccinellid predators was recorded during the 3 rd week of February. We observed a significant synchronization between aphids and coccinellids populations. It is concluded from the study that as INQLAB-91 is resistant to the attack of aphid's population, this cultivar should be promoted in the areas of high aphid infestation. The populations of coccinellids follow the aphid's population and coccinellids can be important biological control agents of aphids and can be imported tool for IPM programme in the study area. © 2011 Academic Journals. Source

Discover hidden collaborations