Abbreviation: J. Entomol. Nematol.
Start Year: 2009
Page 1 of 5, showing 20 records out of 97 total, starting on record 1, ending on 20
DOI: 10.5897/JEN2016.0159[Article Number: B5EE60261449]
Sorghum chafer, Pachnoda interrupta (Olivier) is a damaging pest of sorghum, other cereals and horticultural crops in Africa which results in complete crop loss. Currently, the management strategies rely heavily on chemical pesticides, which do not provide effective control. There is evidence showing that microbial biocontrol agents have the potential to control P. interrupta. In this study, the entomopathogenic... Read more.
DOI: 10.5897/JEN2016.0160[Article Number: 07DE2F861240]
The species Helicoverpa armigera is one of the most important polyphagous and widely distributed pests in the world. Its occurrence was recently reported on soybean and cotton, in the states of Goiás, Mato Grosso and Bahia, Brazil. This study aimed to evaluate the occurrence and density of Helicoverpa armigera in Mato Grosso do Sul State, an important pest for agriculture and identified in Brazil in 2013. 81... Read more.
DOI: 10.5897/JEN2016.0154[Article Number: 12C668659304]
The present study was carried out in order to identify the ant fauna of cocoa fields leeched by Loranthaceae, genus Phragmanthera in Nkoemvone seed farms in the South region of Cameroon. The collection of ants was conducted between November 2013 and January 2014. A total of 15 ant species divided into two sub families (Formicinae and Myrmicinae) have been identified, the subfamily of Myrmicinae being the most... Read more.
DOI: 10.5897/JEN2015.0145[Article Number: CDC008958260]
Root-knot nematode, Meloidogyne incognita (Kofoid and White) Chit wood) is one of the major constraints for the successful cultivation of tomato (Lycopersicon esculentum Mill.) in Ethiopia. Among different management strategies, biological control is important in the light of increased awareness of environmental and human health hazards. Therefore, the present study was conducted to evaluate the effect of different... Read more.
DOI: 10.5897/JEN2015.0149[Article Number: 047C0DE57831]
Using two commercially available arbuscular mycorrhizal fungal (AMF) products, one based on Funneliformis mosseae and the other on Glomus dussii, an experiment was conducted to assess their effect on yam growth and ability to suppress nematode damage in pots. Four yam cultivars (cvs) were used: two Dioscorea alata cvs (TDa98-01183 and TDa98-165), and two Dioscorea rotundata cvs (TDr97-00551 and TDr 745). Micropropagated... Read more.
DOI: 10.5897/JEN2015.0138[Article Number: C39803056383]
Cymbopogon citratus oil is used in folk medicine asrepellent and insecticide against insects. This study evaluated the insecticidal activity of C. citrates oil extracted from Brazil and Cuba and its main component citral as insecticides against Chrysomya megacephala, Chrysomya putoria and Lucilia cuprina. Variables monitored were:duration of post embryonic development, larval weight (mg), sex ratio, mortality index... Read more.
DOI: 10.5897/JEN2015.0126[Article Number: 04DFF5C53724]
Innate immune response in insects is essential to resist the infections of pathogens. The present study investigates the antiviral immune response against intracellular baculovirus infection in the desert locust, Schistocerca gregaria. The desert locust was injected with nuclear polyhedral virus isolated from Spodoptera littoralis larvae collected from cotton and maize field in Giza governorates (SlNPV). Haemolymph was... Read more.
DOI: 10.5897/JEN2015.0131[Article Number: E4F757053730]
Two bioactive methanol (MeOH) extracts of two indigenous medicinal plant species Phlomis damascena Born. and Ranunculus myosuroides Boiss. & Kotschy were tested for insecticidal activity of their fractions against the cotton whitefly Bemisia tabaci (Gennadius) adults under controlled conditions. This study is within bio-prospection context, in form of utilizing local plant species as an alternative in sustainable... Read more.
DOI: 10.5897/JEN2015.0125[Article Number: 6B47BEE53308]
A pot randomized complete block design experiment was carried-out to evaluate the impact of calcium sulphate or potassium silicate or moringa dry-leaf powder either alone or combined as double or triple treatments along with oxamyl or the three items + oxamyl 24% L as tetra application in comparison with oxamyl at the recommended dose against Meloidogyne incognita infecting tomato plant cv. 9065 FI under greenhouse... Read more.
DOI: 10.5897/JEN2015.0123[Article Number: D8F86DC52550]
The potential sources and abundance of naturally occurring entomopathogenic fungi with bio-control potential against the cowpea pod borer, Maruca vitrata, were investigated by adapting the Galleria bait method. Soil samples from five sites: Cow-stead, Piggery and Poultry sites as well as Crops Research Garden (CRG) and Practical Year Training Programme (PYTP) farm for arable crops of the University of Ibadan were used... Read more.
DOI: 10.5897/JEN2015.0124[Article Number: 26EBF3652552]
Fruit flies are regarded as one of the most devastating pest of fruits and vegetables on earth planet. Generally chemical control is implemented for their control but it poses lot of eco-environmental concerns so the emphasis is now turning towards eco-friendly management practices. Bio-control is an efficient and environmentally sound approach and augmentation is primarily focus on classical biological control... Read more.
DOI: 10.5897/JEN2015.0119[Article Number: 9B0BBFD51629]
In an attempt to find out the reasons of pomegranante fruit drop due to insect attacks, regular collection of all fallen fruits beneath trees of nine different varieties was done during the fruiting season from August 2013 to December 2013 in an organic pomegranate orchard in the Chott-Mariem region of Tunisia. Apparently heatlthy and cracked fruits were dissected in the laboratory to identify insect larvae found... Read more.
DOI: 10.5897/JEN2015.0116[Article Number: 79BA3C651630]
Stored wheat flour samples purchased from Jazan local markets in Saudi Arabia were checked for the presence of pests, insect and fungal species. The insects existing in the flour were separated and identified as red flour beetle Tribolium castaneum and from 60 individuals (dead bodies) inspected, 17 individuals exhibited abnormal deformation, decomposition and or superficial fungal growths. Incubation of the dead... Read more.
DOI: 10.5897/JEN2014.0112[Article Number: 713103550143]
This study was conducted in kewet district of Amhara region, Ethiopia. The experiment on seasonal thrips population dynamics and onion yield loss was conducted in 2003 and 2004. The treatments were five transplanting dates of two month interval with and without spray of insecticide in five replications. Thrips count per plant was low during the rainy and cool months of July to November and in April. Thrips population... Read more.
DOI: 10.5897/JEN2013. 0086[Article Number: F0192EC48736]
Biological control of plant parasitic nematode Tylenchulus semipenetrans was studied under greenhouse conditions. In the present study, the effect of the soil-dwelling predatory mite, Gaeolaelaps aculeifer (Acari: Laelapidae), on the population development of citrus nematode was examined. Compared to the nematode-alone, all mite treatments significantly restricted reproduction of citrus nematode. Nematode population... Read more.
DOI: 10.5897/JEN2014. 0114[Article Number: 5E287EC48740]
This study assesses the pathogenicity of Metarhizium anisopliae isolate ICIPE 51 against different nymphal instars and adults of Rhopalosiphum padi and Metopolophium dirhodum and investigates effects of fungal infection on fecundity and intrinsic rate of aphid increase. To obtain different developmental stages, adult aphids were inoculated onto fresh leaf discs, reproducing parthenogenetically. Rearing was carried out... Read more.
DOI: 10.5897/JEN2014. 0109[Article Number: BF7572248742]
Field trials were conducted to determine effects of cultivar and insecticide application on grain yield and yield loss of cowpea to insect pest during the 2008 and 2009 cropping seasons at Baga (13° 29ʺ N and 13° 32ʺ E), Lake Chad shore area of Nigeria. Three cowpea varieties (Kanannado, Borno brown and IT98k-1312), two insecticides [cypermethrin (30 g) + dimethoate (250 g) and neem seed aqueous extract] and... Read more.
DOI: 10.5897/JEN2014.0107[Article Number: 50DB31B48458]
Laboratory studies were conducted at the University of Port Harcourt to evaluate the response of dried yam chips as a host for Prostephanus truncatus (Horn) (Coleoptera: Bostrichidae). The test was conducted using four improved yam varieties namely; Adaka, Ame, Nwokpoko and Obiaturugo. Ten grams of each substrate of the dried yam chips were placed in plastic containers of 300 ml and each container was infested with... Read more.
DOI: 10.5897/JEN2014.0108[Article Number: D63712348461]
Cole crop production in general and cabbage in particular is constrained by pest infestation, reducing the farmer’s profit margin considerably. In this study, the effects of three plant bed types: flat, ridges and raised beds were investigated in 2012 and 2013 at Asiwa and Dormaa Ahenkro in Ghana, respectively to study their effects on plant parasitic nematodes and the yield of cabbage. Treatment effects on... Read more.
DOI: 10.5897/JEN12.014[Article Number: 432E4D248075]
Rhynchophorus ferrugineus Olivier and Rhynchophorus schach Olivier have long been reported as the two most common species of palm weevils in the Philippines. In 2008, surveys conducted in Agusan del Sur, Davao del Sur, Davao City and Cebu revealed more erstwhile unreported palm weevil morphotypes which led to perplexity in taxonomic classification. This study was conducted to determine and ascertain the genetic... Read more.
Page 1 of 5, showing 20 records out of 97 total, starting on record 1, ending on 20