Applied Entomology and Phytopathology

Determination of economic threshold and yield losses of grain corn (Zea mays L.) in competition with redroot pigweed (Amaranthus retroflexus L.)

R. Mirzaei; M. Rostami; M. Ovaysi; M. Banayan Aval; M. Bagestani

Volume 73, No. 1 , September 2005, Pages 1-12

Abstract

In order to study yield loss percentage and weed threshold density in grain corn, an experiment was conducted in 2002 at the AgriculturalCollege, Ferdowsi University of Mashhad using ... Read More

Determination of Economic Injury Level of Large cotton aphid Acyrthosiphon gossypii in Kashmar

M. Sirjani; A. Rezvani

Volume 73, No. 1 , September 2005, Pages 13-23

Abstract

Cotton aphid, Aphis gossypii, and large cotton aphid, Acyrthosiphon gossypii (Hom.: Aphididae) are the most important aphids of cotton fields in Iran. The large cotton aphid is more ... Read More

Status of six potato viruses in Khuzestan province

Reza Khakvar; M. Shamsbakhsh; Reza Pourrahim

Volume 73, No. 1 , September 2005, Pages 25-37

Abstract

The rate of incidence of Potato virus Y (PVY), Potato virus X (PVX), Potato virus S (PVS), Potato virus M (PVM), Potato leafroll virus (PLRV) and Alfalfa mosaic virus (AMV) in potato ... Read More

Study of biology of Eucnaemidophorus rhododactylus (Lep.: Pterophoridae) in rose gardens of Kashan

Mohammad Reza Nematollahi

Volume 73, No. 1 , September 2005, Pages 39-54

Abstract

In recent years damage of green bud borer, Eucnaemidophorus rhododaetylus Den. & Schiff. (Lep.: Pterophoridae), has increased in the rose gardens of Kashan area. The adults are ... Read More In recent years damage of green bud borer, Eucnaemidophorus rhododaetylus Den. & Schiff. (Lep.: Pterophoridae), has increased in the rose gardens of Kashan area. The adults are generally brown to gray, with length of 6-8 mm and wingspan of 20-24 mm. Fore and hindwings are divided into 2 and 3 lobes, respectively. The larvae are yellow to green, fusiform with maximum length of 12-13 mm. The pest spines silk treads to make its feeding nest in which it feeds on buds and flowers. Therefore, it reduces the flower number and amount of perfume and essence. Biology and growth characters of the pest were studied through regular inspections of different rose gardens. Longevity of adults and egg-laying capacity of females was studied using net sleeves. To study hibernation of the pest, samples from soil, debris, and bush foliage were inspected in laboratory. The study showed that in the region the pest feeds only on damask rose bushes. The highest damage rate was observed in rose fields of Barzok amounting 33.75%.The pest showed to be univoltine and hibernates as diapausing first instar larvae under cockles. Diapause takes from mid July to early April and larvae renewed their activity when rose bushes restart their growth. Average duration of different growth stages under field conditions were recorded as follows: egg 12.5 days, larva 60 days, pupa 10 days, and adult 15 days. In recent years damage of green bud borer, Eucnaemidophorus rhododaetylus Den. & Schiff. (Lep.: Pterophoridae), has increased in the rose gardens of Kashan area. The adults are generally brown to gray, with length of 6-8 mm and wingspan of 20-24 mm. Fore and hindwings are divided into 2 and 3 lobes, respectively. The larvae are yellow to green, fusiform with maximum length of 12-13 mm. The pest spines silk treads to make its feeding nest in which it feeds on buds and flowers. Therefore, it reduces the flower number and amount of perfume and essence. Biology and growth characters of the pest were studied through regular inspections of different rose gardens. Longevity of adults and egg-laying capacity of females was studied using net sleeves. To study hibernation of the pest, samples from soil, debris, and bush foliage were inspected in laboratory. The study showed that in the region the pest feeds only on damask rose bushes. The highest damage rate was observed in rose fields of Barzok amounting 33.75%.The pest showed to be univoltine and hibernates as diapausing first instar larvae under cockles. Diapause takes from mid July to early April and larvae renewed their activity when rose bushes restart their growth. Average duration of different growth stages under field conditions were recorded as follows: egg 12.5 days, larva 60 days, pupa 10 days, and adult 15 days. Key words: Damask rose, Biology, Bud borer, Eucnaemidophorus rhododactylus, Pterophoridae

Quantification of Deoxynivalenol in wheat flour using Immunoaffinity column and High performance Liquid Chromatography

Alireza Ebadollahi; M. GHAZIKHANSARI

Volume 73, No. 1 , September 2005, Pages 55-64

Abstract

In order to determine the amount of Deoxynivalenol (DON) in flours, five flour factories were selected among Tehran provinces' flour factories. One kilogram samples of five kinds of ... Read More

Study on the resistance to two-spotted spider mite (Tetranychus urticae) of selected lines from Lordegan chitti bean variety

zarir saeidi; F. Salehi

Volume 73, No. 1 , September 2005, Pages 65-77

https://doi.org/10.22092/jaep.2005.123379

Abstract

In this study 7 bean lines, which showed relative resistance to two-spotted spider mite in field condition, were selected from local variety “Lordegan” and tested in greenhouse ... Read More

Effects of crop density on interference of common bean (Phaseolus vulgaris L.) and weeds

K. Mousavi; E. Zand; M. A. Bagestani

Volume 73, No. 1 , September 2005, Pages 79-92

Abstract

In order to evaluate interference of common bean and weeds an experiment was conducted during 2001-2002 growing season in LorestanProvince. The experimental design was a randomized ... Read More

Bioassay of some Iranian strains of Bacillus thuringiensis (Bacteria: Bacillaceae) against Helicoverpa armigera (Lep.: Noctuidae)

S. Izadyar; Hassan Askary; K. Talebi Jahromi; Mohammadreza Rezapanah

Volume 73, No. 1 , September 2005, Pages 93-104

Abstract

This study was carried out to detect biological variations of Iranian isolates of B. thuringiensis collected by standard methods from different regions of Iran. Experiments were fulfilled ... Read More

Investigation on biology of cherry weevil Rhynchites auratus (Scop) in Shahrood region

ahmad dezianian

Volume 73, No. 1 , September 2005, Pages 105-117

Abstract

A study carried out on cherry weevil in Bastam and Zirstagh regions of Shahroud district during 1999-2000. Stone fruits production playing an important role in economy of region. Currently ... Read More

Comparison of the efficacy of the rodenticide Difethialone with Bromadiolone against Nesokia indica

M. Morovati

Volume 73, No. 1 , September 2005, Pages 119-131

Abstract

The experiments were conducted in two phases under laboratory and field conditions. Laboratory tests were performed in 5 treatments under Choice and No-choice feeding conditions. In ... Read More

Report of Campoplex tumidulus and Itoplectis tunetana (Hym.: Ichneumonidae), parasitoids of Yponomeuta malinellus Zell. (Lep.: Yponomeutidae) from Iran

Y. Karimpour; Yaghoub Fathipour; A. A. Talebi; Saeid Moharramipour; K. Horstman

Volume 73, No. 1 , September 2005, Pages 133-133

Abstract

Report of Campoplex tumidulus and Itoplectis tunetana (Hym.: Ichneumonidae), parasitoids of Yponomeuta malinellus Zell. (Lep.: Yponomeutidae) from Iran

A. A. Talebi; E. Rakhshani; Shohreh Daneshvar; Yaghoub Fathipour; Saeid Moharramipour; K. Horstman

Volume 73, No. 1 , September 2005, Pages 134-134

Abstract

Parasitoid wasps of Yponomeuta malinellus Zeller(Lep.: Yponomeutidae) were studied in Karadj (Tehran province) in 2003. The populations of larvae and pupae of Y. malinellus were collected ... Read More

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Volume & Issue: Volume 73, No. 1 - Serial Number 79, September 2005, Pages 1-134

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