Natural enemies of Ostrinia nubilalis (Hubner) and papulation density of pest and its dominant natural enemy on four corn hybrids in Moghan region
Journal Title: International journal of Advanced Biological and Biomedical Research - Year 2014, Vol 2, Issue 1
Abstract
The European corn borer, Ostrinia nubilalis (Hübner), is an important insect pest of corn, Zea mays L., crop in Moghan region. In field experiments, the density of eggs and larvae of O.nubilalis and percentage of eggs and larvae parasitisms were studied on four corn hybrids NS704 (commercial cultivar), NS770, NS640 and MV524 (cultivars with high yield). Furthermore, in this study, the predators and parasitoids of the European corn borer were collected and identified on four corn hybrids in an experimental field. The seeds of corn hybrids were planted in an experimental field, approximately 700 m2. This experiment was conducted in a completely randomized block design with four replications. Samplings were conducted from the V6 (six leaf collar) until the R3 (milk) growth stages of corn. On each sample date, five plants/hybrid from each of the four replication were selected randomly and number of eggs (parasitized and non- parasitized) of O. nubilalis per plant was recorded using a 20X hand lens, then the stalk of these plants were dissected and number of larvae, larval mines and parasitized larvae per plant were recorded. The results showed that, the lowest density of eggs, larvae and larval mines were observed on NS704. While, the percentage of eggs and larvae of this month on NS704 were higher than on the other three tested hybrids . Therefore, it was concluded that the NS704 hybrid was less suitable to the European corn borer among the tested corn hybrids and has the potential to be used in the integrated management of O. nubilalis. Furthermore, in this study 12 predators’ species and 2 parasitoid species were collected and identified from experimental field. The predator bug, Orius niger Wolff, and parasitoid wasps, Trichogramma brassicae Bezd and Habrobracon hebetor (Say), had higher abundance rate on four tested hybrids.
Authors and Affiliations
Javad Salmani Moghanlou| Department of Entomology, school of agriculture science, Mohaghegh Ardabili University, Ardabil, Iran, Seyed Ali Asghar Fathi| Department of Entomology, school of agriculture science, Mohaghegh Ardabili University, Ardabil, Iran, Gadir Nuri Ganbalani| Department of Entomology, school of agriculture science, Mohaghegh Ardabili University, Ardabil, Iran, Jebraeil Razmjou| Department of Entomology, school of agriculture science, Mohaghegh Ardabili University, Ardabil, Iran, Masoud Taghizadeh| Department of Entomology, school of agriculture science, Mohaghegh Ardabili University, Ardabil, Iran, Abasalt Rostami Ajirlou| Ph.D Student in Agro-ecology, Department of Crop Production and Plant breeding, School of Agriculture, Zabol University, Zabol, Iran, Morad Shaban| Young Researchers Club, Boroujed branch, Islamic Azad University, Boroujerd, Iran, E-mail: Shaban.morad@yahoo.com
Keywords
Related Articles
- EP ID EP12993
- DOI -
- Views 340
- Downloads 12
Comparison of Hydrodistillation, Microwave Hydrodistillation and Solvent Free Microwave Methods in analysis of the essential oils from aerial parts of Haplophyllum robustum Bge. By GC/MS method
The genus Haplophyllum, which belongs to the Rutaceae family, includes 18 species in Iran. In this study, after collecting plant material, botanical identification and suitable drying, the essential oils from aerial pa...
The Feasibility of Colza Autumnal Cultivation in Hamedan Province With Focus on Agroclimatic Conditions by Means of GIS System
Weather and climatic parameters and their impact on farming plants are one of the foremost effective factors on improvement of crop yield. The potential facilities of various regions may be determined with agroclimatic s...
The Impact of Different Planting Methods on yield and Cluster Characters Wheat (Cultivar of Chamran) Under Different Conditions of Irrigation in the Northern Khuzestan Climate
This paper aims at investigating the impacts of different planting methods on the yield and Cluster Charactersin different irrigation conditions on wheat (cultivar of Chamran) in Khuzestan for one year in Shavoor agric...
Analyzing factors that effecting on rangeland degradation (case of study: District of Pirtaj)
The purposeof this studywas to Analyzing factors that effecting on rangeland degradation. Statistical population of this research consisted of whole farmer in Pirtaj district (N= 1600); from that 120 farmer were select...
The Effect of Vitamin E and Selenium on Cyclophosphamide Detoxification in Hepatic Tissues of Mature Rats
Introduction and Objective: liver is an important body organ without which life is impossible. Cyclophosphamide is an alkylating agent widely used as an anti-cancer (“antineoplastic†or “cytotoxicâ€) chemotherap...