Results 41 to 50 of about 43,020 (198)
Infestations of Rhopalosiphum padi were compared between common varieties grown at nitrogen levels of 50, 100 and 150 kg/ha in 1986 and 1988, and controlled with dimethoate in 1988.
Sirpa Kurppa, Marja Suonpää
doaj +2 more sources
Plant spacing - a non polluting tool for aphid (Hemiptera: Aphididae) management in canola, Brassica napus [PDF]
Current study was initiated to generate the information on the effect of row-to-row distance of brassica crop, Brassica napus L., on aphids population. Three line spacing (20, 30 and 40 cm) with a constant nine cm plant to plant distance were evaluated ...
M. Sarwar
doaj
Solitary, polyphagous, endoparasitoid Diaeretiella rapae (Mc’Intosh) is considered as one of the prominent parasitoid of aphids on several host plants under natural field conditions.
JAYDEEP HALDER, A B RAI, M H KODANDARAM
doaj +1 more source
First records of Charipinae (Hymenoptera, Cynipoidea, Figitidae) aphid hyperparasitoids from Malta [PDF]
Charipinae material has been collected from different localities in Malta. Three species have been identified: Alloxysta citripes, Alloxysta pilipennis and Phaenoglyphis villosa in association with two aphids and one parasitoid species.
Mifsud, David +4 more
core +1 more source
Aphids and Sclerotinia stem rot in oilseed rape are often studied in isolation, and their relationship is rarely explored. Our field studies have revealed a significant positive correlation between the number of aphids and the incidence of Sclerotinia ...
Zhong-Ping Hao +4 more
doaj +1 more source
Aphids associated with shrubs, herbaceous plants and crops in the Maltese Archipelago (Hemiptera, Aphidoidea) [PDF]
A survey of the aphids associated with Maltese shrubs, herbaceous plants and crops was carried out. Sixty six aphid species were recorded from more than 90 species of host plants.
Mifsud, David +6 more
core
Developing Plantain for Resistance to Banana Aphids by RNA Interference
Banana bunchy top virus (BBTV) is one of the world’s invasive species. Banana aphid (Pentalonia nigronervosa) is found in all banana producing areas and it is the insect pest known to transmit BBTV causing banana bunchy top disease (BBTD) in ...
Temitope Jekayinoluwa +5 more
doaj +1 more source
Parasitoids (Hymenoptera: Braconidae, Aphidiinae) of the mealy plum aphid Hyalopterus pruni (Geoffr.) on common reed (Phragmites australis) in different types of habitat in Poland [PDF]
The aim of the present work was to determine the parasitoid guild of the mealy plum aphid Hyalopterus pruni on common reed (Phragmites australis) in different types of habitats in central Poland.
Barczak T. +2 more
doaj +1 more source
The widespread cultivation of highly productive varieties of agricultural crops often leads to the emergence and spread of new intraspecific forms of insects capable of mass reproduction.
A. B. Vereshchagina, E. S. Gandrabur
doaj +1 more source
The effect of within-crop habitat manipulations on the conservation biological control of aphids in field-grown lettuce [PDF]
Within-crop habitat manipulations have the potential to increase the biological control of pests in horticultural field crops. Wildflower strips have been shown to increase the abundance of natural enemies, but there is little evidence to date of an ...
Skirvin, David J. +9 more
core +1 more source

