Results 111 to 120 of about 260,607 (255)
Entomologia Experimentalis et Applicata, EarlyView.Female Bombus vestalis cuckoo bumblebees were introduced to a flight arena containing four identical opaque boxes, featuring slits to release volatiles from the bumblebees inside. When only one box contained a developing host colony, the cuckoos were able to locate their hosts among the four boxes with 66.2% accuracy.
Sofia Dartnell +2 more
wiley +1 more source
Economic evaluation of a weed-activated sprayer for herbicide application to patchy weed populations [PDF]
Spatial distribution of weeds in a crop is patchy. Traditional boom sprayers waste herbicide by applying it to areas where weed density is already low.
Pannell, David J., Bennett, Anne L.
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Germination stimulatory activity of bacterial butenolide hormones from Streptomyces albus J1074 on seeds of the root parasitic weed Orobanche minor. [PDF]
J Pestic Sci, 2021 Okazawa A +4 more
europepmc +1 more source
Ecological Entomology, EarlyView.Cotesia glomerata polydnavirus and venom, either alone or in combination, affect colonisation by members of the arthropod community in a natural field setting. Plants damaged by P. brassicae injected with both polydnavirus and venom were colonised more often by Mamestra brassicae caterpillars, Myzus persicae aphids and aphid parasitoids compared to ...
Sarah Naomi Kalisvaart +5 more
wiley +1 more source
Modelling weed population dynamics: impact of cultural control and climate change [PDF]
Over the last three decades, concern about food safety and the management of natural resources has increased. Instigated by the previous EU pesticide review, (EU 91/414) carrot growers in particular have been hit by the revocation of several post ...
Brak, Bastiaan
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Insect Conservation and Diversity, EarlyView.Wheat in North America harbours a diverse insect community (565 morphospecies were identified in this study), and pests represented <7% of specimens collected. Regenerative wheat management promoted insect diversity without increasing pest populations.
Daniel Pecenka +3 more
wiley +1 more source
Modelling the Dynamics of Weed Management Technologies [PDF]
An appropriate economic framework for valuing the benefits of weed management technologies is to treat weeds as a renewable resource stock problem. Consequently, the weed seed bank is defined as a renewable resource that changes through time due to ...
Sinden, Jack A. +2 more
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Insect Conservation and Diversity, EarlyView.Multispecies occupancy models indicated that the occurrence of bumble bees was associated with local floral resources as well as the landscape surrounding a site within 1.6 km. Estimated species richness was greater at sites with more forest cover and lower at sites with more corn and soybean agriculture in the surrounding landscape.
Kelsey N. Shepherd +2 more
wiley +1 more source
Journal of Applied Entomology, EarlyView.ABSTRACT The amaranth flea beetle, Disonycha glabrata (F.), is a major pest of amaranth crops (Amaranthus spp.) in the United States. Despite its economic impact, its natural enemy complex remains poorly documented. In this study, we report the first record of larval parasitism in D. glabrata by the tachinid fly Myiopharus ancilla (Walker).
Yony T. Callohuari +4 more
wiley +1 more source
Sowing time, false seedbed, row distance and mechanical weed control in organic winter wheat. [PDF]
, 2000 In organic farming, mechanical weed control in winter wheat is often difficult to carry out in the fall, and may damage the crop, and weed harrowing in the spring is not effective against erect, tap-rooted weeds such as Tripleurospermum inodorum, Papaver
Rasmussen, Ilse A.
core +1 more source