نتایج جستجو برای: facilitates the pest

تعداد نتایج: 16060586  

Journal: :Botanical Gazette 1892

2009
Waldemar Klassen

Area-wide pest management is one of several major plans or strategies for coping with pest problems. Management of localized populations is the conventional or most widely used strategy, wherein individual producers, other operators and households practice independent pest control. However, since individual producers or households are not capable of adequately meeting the challenge of certain v...

Journal: :international journal of agricultural science, research and technology in extension and education systems 2012
pawan singh bhandari

the study was conducted among the two farmer groups in bhaktapur and kavre districts of nepal. the main objective of the study is to evaluate the differences in belief, attitude and practices felt by the farmers after participation in the ipm ffs. the study has been based on data collected through personal interview with the farmers, focus group discussion, personal observation in the farmers f...

A. Mohammadipour F. Kazemi Yazdi J. Eilenberg

Sunn pest is one of the most important cereal pests that affect both grain yield and quality of cerealin Iran. One potential control strategy is to use entomopathogenic fungi such as Beauveriabassiana Vuillemin as mycoinsecticide to control this pest. Naturally infested Sunn pests inKermanshah province were collected and brought to laboratory. 10 isolates were selected forfurther analysis in th...

2008
Paul A. Weston

Pest index, a new approach to categorizing the threat posed by an organism to woody plants, is proposed to assist plant managers in establishing treatment thresholds for pests of woody plants. The need for such a tool is based on the incredible diversity of pests of woody plants and the lack of experimental data establishing such thresholds. The pest index is computed using information about th...

Journal: :international journal of advanced biological and biomedical research 2013
laleh salehi ahmad rezvanfar seyed hamid movahed mohammadi seyed mahmood hosseini

the aim of the research was analysis of rice producers’ perceptions of participatory communication in the use of integrated pest management (ipm). research population was consisted of rice producers in the west of mazandaran province (n=16126), whose 187 ones were selected using cochran’s formula. data were gathered by systematic random sampling method. the instrument for data collection was a ...

Journal: :گیاه پزشکی 0

the sunn pest, eurygaster integriceps puton, is a serious pest of wheat in coraim region of ardabil province. in this study, the egg parasitoids of sunn pest was collected and identified in this region during 2007 and 2008. also, the percentage of egg parasitism was determined in 14 different defined areas in this region. the areas 1-3 were selected in irrigated wheat fields in the presence of ...

احمدی, اکرم, باده یان, ضیاءالدین, بارانی بیرانوند, زینب, مهدی کرمی, شهرام,

The formation of gall is one of the various types of vegetarianism, and gall producing insects cause stress in their hosts. The present study aimed to investigate the changes of some biochemical and photosynthetic indices due to the gall in Persian oak trees in Forests of Middle Zagros. Sampling was performed from trees infected by gall and healthy trees in Blouran forests. The results showed t...

Journal: :چغندرقند 0
علیرضا حق شناس مربی پژوهشی بخش تحقیقات گیاهپزشکی مرکز تحقیقات کشاورزی و منابع طبیعی اصفهان

flea beetles of chaetocnema tibialis (col:, chrysomelidae) are important pests on sugar beet iniran. in some cases, the damages caused by this pest are so high that some part of  the field should be replanted. since most of crop losses occur from cotyledon stage until 4-leaf stage, monitoring of the population of this pest could play an important role in decreasing damage of the pest. sticky-co...

طبری, مهرداد, علی نیا, فرامرز, قهاری, حسن,

  Striped rice stem borer, Chilo suppressalis Walker (Lepidoptera: Pyralidae) is one of the key pests in north of Iran, which damages the rice fields and decreases yield, severely. With attention to the importance of population dynamics of pests in integrated pest management, the population dynamics of immature life stages (egg, larva, pupa) of C. suppressalis were analyzed on three dominant ri...

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