搜索结果: 1-15 共查到“Aphids”相关记录15条 . 查询时间(0.133 秒)
Many of an organism's traits are influenced by cues from the environment. These features are known as phenotypically plastic traits, and are important in allowing the organism to cope with unpredictab...
Influence of Intercropping with Spring Cereals on the Occurrence of Pea Aphids (Acyrthosiphon pisum Harris, 1776) and their Natural Enemies in Field Pea (Pisum sativum L.)
Acyrthosiphon pisum syrphid eggs syrphid larvae
2015/3/6
Occurrences of pea aphids and their natural enemies (syrphids, mummies caused by entomopathogenic fungi
Beauveria sp. and by the parasitic wasp Aphidius ervi) were compared in monocultures and mixtu...
Effects of different field managements on the abundance of cereal aphids (Sternorrhyncha: Aphidoidea)
cereal aphids winter wheat field managements
2015/1/30
The abundance of cereal aphids on winter wheat tillers and ears was determined in two field managements (integrated and ecological) at Dolná Malanta, Slovakia, over the years 1999–2001. The overall av...
Influence of parasitisation on cereal aphids (Sternorrhyncha: Aphidoidea) in various field management
parasitoids cereal aphids winter wheat
2015/1/30
The level of parasitism of cereal aphids on winter wheat at growth stage 69 DC (end of bloom) differed between two field management used (integrated and ecological) and between individual years of the...
Hymenopteran parasitoids (Hymenoptera: Aphidiidae) of cereal aphids (Sternorrhyncha: Aphidoidea) in winter wheat crops in Slovakia
winter wheat cereal aphid parasitoids
2015/1/30
During 1997–1999, occurrence of hymenopteran parasitoids of cereal aphids was observed in different localities in Slovakia. Altogether, seven species of aphid parasitoids were recorded. The total numb...
OCCURRENCE AND POPULATION DENSITY OF APHIDS IN APPLE ORCHARDS OF SOUTH BULGARIA
apple aphids infestation Dyspahis plantaginea Dysaphis devecta Rhopalosiphum insertum Macrosiphum euphorbiae Aphis spiraecola Aphis pomi Eriosoma lanigerum
2014/2/21
In a 2006-2008 study, seven aphid species (Hemiptera: Aphididae) were detected on apple trees in South Bulgaria: Rhopalosiphum insertum Walk. (apple-grass aphid), Dysaphis plantaginea Pass (rosy apple...
Resistance of Triticum Species to Cereal Aphids
plant resistance Rhopalosiphum padi Sitobion avenae wheat
2014/2/25
The resistance of Triticum ssp. to English grain aphid (Sitobion avenae F.) and bird cherry-oat aphid (Rhopalosiphum padi L.) has been studied in different regions of Russia and the former Soviet Unio...
EFFICACY OF IMIDACLOPRID (CONFIDOR 200 SL) AGAINST APHIDS INFESTING WHEAT CROP
Confidor 200 SL imidacloprid wheat aphids
2010/12/8
Imidacloprid (Confidor 200 SL) was evaluated either alone or with a fungicide (Tilt 0.01%) against wheat aphids. There were seven different treatments, including an untreated control. All the treatmen...
Rlationship of Aphids and Predators on different Genotypes of Wheat Triticum aestivum under Agri Eco-System of Bahawalpur
Triticum aestivum genotypes aphids predators Pakistan
2009/9/29
Ten genotypes of wheat viz. Inqalab 91, V-2400, V-2278, V-4012, V-2000, V-2333, V-
2210, Uqab-2000, Punjnad and V-2237 were sown in the research area of Regional
Agricultural Research Institute, Bah...
ABIOTIC FACTORS EFFECT ON POPULATION FLUCTUATION OF ALATE APHIDS IN WHEAT
Triticum aestivum aphids population density temperature relative humidity Pakistan
2009/9/29
These studies were conducted at Daphar (Mandi Baha-ud-Din) and Bahawalpur
during 1997-2005 and at Ayub Agricultural Research Institute, Faisalabad, Pakistan
during 1999-2005 to determine the role of...
ROLE OF MINERAL OIL IN POTATO PROTECTION AGAINST APHIDS AND VIRAL INFECTION
aphids mineral oil PLRV PVM PVY potato
2009/3/31
Three-year field experiments investigated the effectiveness of Sunspray 850 EC mineral oil protection against PVY, PVM, PLRV. Every seven days six to eleven treatments were applied, depending on the y...
Effect of Essential Oil from Citronella and Alfazema on Fennel Aphids Hyadaphis foeniculi Passerini (Hemiptera: Aphididae) and its Predator Cycloneda sanguinea L. (Coleoptera: Coccinelidae)
Biological control phids itronella lfazema adybugs
2009/2/8
: The essential oil of plants is used as an alternative to pesticides for the control of aphids. We study the effect of the essential oils of citronella and alfazema on aphid populations in the labora...
The occurrence and control of aphids and thrips in winter triticale
aphids thrips winter triticale
2010/1/14
The occurrence and control of aphids and thrips in winter triticale.
Aphids (Homoptera: Aphididae) of Kahramanmaraş Province, Turkey
Aphididae Survey Kahramanmaraş Turkey
2010/3/29
This study aimed to identify 68 aphid species and subspecies in Kahramanmaraş from 1998 to 2001. It was found that these species and subspecies were from 35 genera and the subfamilies Aphidinae, ...
The Role of Phenotypic Plasticity in Host Race Formation and Sympatric Speciation in Phytophagous Insects, Particularly in Aphids
Aphids phenotypic plasticity host race formation sympatric speciation
2010/3/31
The genetic structure of aphid populations has received increasing attention as a result of the evolution of insecticide resistance, the appearance of biotypes overcoming plant resistance and the incr...