Author: Laura Anne Weiser
Publisher:
ISBN:
Category :
Languages : en
Pages : 222
Book Description
This dissertation quantified the population dynamics of E. fabae and developed a new management technique for this alfalfa pest. A two-year study monitored the number of E. fabae at 3 locations within alfalfa fields from mid-April to June and from adjacent tree/shrub species until July. Similar numbers of E. fabae were present on all tree and shrub species. There were more E. fabae at the edges of the fields closest to the trees than at 40 m into the field during the 1st week of May. In subsequent samples, there was no difference in the distribution of E. fabae in the alfalfa field. Based on this study, E. fabae are not using adjacent trees to build up population numbers to infest nearby alfalfa fields in early spring. The effects of a 3 m uncut strip at first harvest on the distribution of E. fabae and predatory species in alfalfa were examined from 1998 to 2000. Higher numbers of E. fabae were observed in the uncut strips than in the regrowth for 2-3 weeks after harvest in 2 of 3 years. The number of insect predators within the uncut strip was higher during the second week after harvest. This research provides alfalfa growers a potential cultural management technique for E. fabae while retaining beneficial insects. Predation rates of E. fabae by four predatory species were examined in a greenhouse study. Adult Coleomegilla maculata and Orius insidiosus consumed more E. fabae nymphs than adults. In contrast, similar numbers of adult and nymphal E. fabae were consumed by Nabis roseipennis and Chrysoperla carnea. Adults and nymphs of E. fabae and adults of predatory species were sampled in Iowa alfalfa fields from June-September in 1999 and 2000. Partial life tables were constructed for E. fabae nymphs. For the 1st growing period, E. fabae nymphal mortality was 70% and 49% in 1999 and 2000, respectively. During the last growing period, total nymphal mortality was relatively low (
Enhancing Biotic Mortality of the Potato Leafhopper, Empoasca Fabae
Author: Laura Anne Weiser
Publisher:
ISBN:
Category :
Languages : en
Pages : 222
Book Description
This dissertation quantified the population dynamics of E. fabae and developed a new management technique for this alfalfa pest. A two-year study monitored the number of E. fabae at 3 locations within alfalfa fields from mid-April to June and from adjacent tree/shrub species until July. Similar numbers of E. fabae were present on all tree and shrub species. There were more E. fabae at the edges of the fields closest to the trees than at 40 m into the field during the 1st week of May. In subsequent samples, there was no difference in the distribution of E. fabae in the alfalfa field. Based on this study, E. fabae are not using adjacent trees to build up population numbers to infest nearby alfalfa fields in early spring. The effects of a 3 m uncut strip at first harvest on the distribution of E. fabae and predatory species in alfalfa were examined from 1998 to 2000. Higher numbers of E. fabae were observed in the uncut strips than in the regrowth for 2-3 weeks after harvest in 2 of 3 years. The number of insect predators within the uncut strip was higher during the second week after harvest. This research provides alfalfa growers a potential cultural management technique for E. fabae while retaining beneficial insects. Predation rates of E. fabae by four predatory species were examined in a greenhouse study. Adult Coleomegilla maculata and Orius insidiosus consumed more E. fabae nymphs than adults. In contrast, similar numbers of adult and nymphal E. fabae were consumed by Nabis roseipennis and Chrysoperla carnea. Adults and nymphs of E. fabae and adults of predatory species were sampled in Iowa alfalfa fields from June-September in 1999 and 2000. Partial life tables were constructed for E. fabae nymphs. For the 1st growing period, E. fabae nymphal mortality was 70% and 49% in 1999 and 2000, respectively. During the last growing period, total nymphal mortality was relatively low (
Publisher:
ISBN:
Category :
Languages : en
Pages : 222
Book Description
This dissertation quantified the population dynamics of E. fabae and developed a new management technique for this alfalfa pest. A two-year study monitored the number of E. fabae at 3 locations within alfalfa fields from mid-April to June and from adjacent tree/shrub species until July. Similar numbers of E. fabae were present on all tree and shrub species. There were more E. fabae at the edges of the fields closest to the trees than at 40 m into the field during the 1st week of May. In subsequent samples, there was no difference in the distribution of E. fabae in the alfalfa field. Based on this study, E. fabae are not using adjacent trees to build up population numbers to infest nearby alfalfa fields in early spring. The effects of a 3 m uncut strip at first harvest on the distribution of E. fabae and predatory species in alfalfa were examined from 1998 to 2000. Higher numbers of E. fabae were observed in the uncut strips than in the regrowth for 2-3 weeks after harvest in 2 of 3 years. The number of insect predators within the uncut strip was higher during the second week after harvest. This research provides alfalfa growers a potential cultural management technique for E. fabae while retaining beneficial insects. Predation rates of E. fabae by four predatory species were examined in a greenhouse study. Adult Coleomegilla maculata and Orius insidiosus consumed more E. fabae nymphs than adults. In contrast, similar numbers of adult and nymphal E. fabae were consumed by Nabis roseipennis and Chrysoperla carnea. Adults and nymphs of E. fabae and adults of predatory species were sampled in Iowa alfalfa fields from June-September in 1999 and 2000. Partial life tables were constructed for E. fabae nymphs. For the 1st growing period, E. fabae nymphal mortality was 70% and 49% in 1999 and 2000, respectively. During the last growing period, total nymphal mortality was relatively low (
Implications of Diet for Survival and Behavior of Potato Leafhopper, Empoasca Fabae, in Alfalfa-based Agroecosystems
Author: Cody Nagy
Publisher:
ISBN:
Category :
Languages : en
Pages : 15
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 15
Book Description
Bionomics and Control of the Potato Leafhopper, Empoasca Mali Le Baron
Author: F. A. Fenton
Publisher:
ISBN:
Category : Empoasca fabae
Languages : en
Pages : 74
Book Description
Publisher:
ISBN:
Category : Empoasca fabae
Languages : en
Pages : 74
Book Description
Population Dynamics of the Potato Leafhopper, Empoasca Fabae, on Water-stressed Alfalfa
Author: George Davis Hoffman
Publisher:
ISBN:
Category :
Languages : en
Pages : 410
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 410
Book Description
Survival and Behavioral Responses of the Potato Leafhopper, Empoasca Fabae (Harris) on Synthetic Media
Author: Douglas Lee Dahlman
Publisher:
ISBN:
Category : Leafhoppers
Languages : en
Pages : 112
Book Description
Publisher:
ISBN:
Category : Leafhoppers
Languages : en
Pages : 112
Book Description
Host Plant Relationships and Environmental Factors Influencing the Potato Leafhopper, Empoasca Fabae (Harris) on Solanum (Tourn.) L. Species
Author: Gerrit Van de Klashorst
Publisher:
ISBN:
Category : Empoasca fabae
Languages : en
Pages : 164
Book Description
Publisher:
ISBN:
Category : Empoasca fabae
Languages : en
Pages : 164
Book Description
Ecological Engineering for Pest Management
Author: Geoff M Gurr
Publisher: CSIRO PUBLISHING
ISBN: 0643100075
Category : Technology & Engineering
Languages : en
Pages : 244
Book Description
Ecological engineering is about manipulating farm habitats, making them less favourable for pests and more attractive to beneficial insects. Though they have received far less research attention and funding, ecological approaches may be safer and more sustainable than their controversial cousin, genetic engineering. This book brings together contributions from international workers leading the fast moving field of habitat manipulation, reviewing the field and paving the way towards the development and application of new pest management approaches. Chapters explore the frontiers of ecological engineering methods including molecular approaches, high tech marking and remote sensing. They also review the theoretical aspects of this field and how ecological engineering may interact with genetic engineering. The technologies presented offer opportunities to reduce crop losses to insects while reducing the use of pesticides and providing potentially valuable habitat for wildlife conservation. With contributions from the USA, UK, Germany, Switzerland, Australia, New Zealand, Kenya and Israel, this book provides comprehensive coverage of international progress towards sustainable pest management.
Publisher: CSIRO PUBLISHING
ISBN: 0643100075
Category : Technology & Engineering
Languages : en
Pages : 244
Book Description
Ecological engineering is about manipulating farm habitats, making them less favourable for pests and more attractive to beneficial insects. Though they have received far less research attention and funding, ecological approaches may be safer and more sustainable than their controversial cousin, genetic engineering. This book brings together contributions from international workers leading the fast moving field of habitat manipulation, reviewing the field and paving the way towards the development and application of new pest management approaches. Chapters explore the frontiers of ecological engineering methods including molecular approaches, high tech marking and remote sensing. They also review the theoretical aspects of this field and how ecological engineering may interact with genetic engineering. The technologies presented offer opportunities to reduce crop losses to insects while reducing the use of pesticides and providing potentially valuable habitat for wildlife conservation. With contributions from the USA, UK, Germany, Switzerland, Australia, New Zealand, Kenya and Israel, this book provides comprehensive coverage of international progress towards sustainable pest management.
Studies on the Potato Leafhopper Empoasca Fabae as a Nursery Pest
Author: Mario F.D. Moretti
Publisher:
ISBN:
Category : Nursery stock
Languages : en
Pages : 446
Book Description
Publisher:
ISBN:
Category : Nursery stock
Languages : en
Pages : 446
Book Description
Studies on the Potato Leafhopper (Empoasca Fabae) as a Nursery Pest
Author: Mario Moretti
Publisher:
ISBN:
Category : Birds
Languages : en
Pages : 446
Book Description
Publisher:
ISBN:
Category : Birds
Languages : en
Pages : 446
Book Description
Environmental Influences on Changes of Populations of the Potato Leafhopper, Empoasca Fabae, in Relation to Alfafa
Author: Z. B. Noon Junior
Publisher:
ISBN:
Category :
Languages : en
Pages : 163
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 163
Book Description