caa a22 4500 388054204 CHVBK 20180307125101.0 cr unu---uuuuu 161130e199809 xx s 000 0 eng 10.1017/S0889189300007785 doi S0889189300007785 pii (NATIONALLICENCE)cambridge-10.1017/S0889189300007785 Assessment of legume and nonlegume ground covers on Coleoptera: Coccinellidae density for low-input pecan management [Elektronische Daten] An annual legume cover crop was evaluated in pecan orchards to increase coccinellids that would reduce pecan aphids. Treatments were a ‘Dixie' crimson clover and hairy vetch mixture and a grass sod. Coccinellids were abundant on the legume ground covers, but coccinellid density in the tree canopy was rarely affected by ground cover treatment. There were substantial differences between the coccinellid species collected from the legumes and from the trees. In Oklahoma, Olla v-nigrum (Mulsant) and Cycloneda munda (Say) were the main species in the trees, while Hippodamia convergens Guerin, Coccinella septempunctata L, and Coleomegilla maculata lengi Timberlake were dominant species in the legumes. In Georgia, Harmonia axyridis (Pallas) was the dominant species in the trees, and C. septempunctata in the legumes. Pecan aphids at two Oklahoma sites usually were not affected by cover crop treatment, but at the Georgia site, early-season aphids frequently were lower with a legume cover crop than with a grass sod. The accumulated effect of all aphid predators and parasitoids attracted to the legume aphids may have reduced the density of the pecan aphid. Copyright © Cambridge University Press 1998 aphid nationallicence Aphididae nationallicence beneficial arthropods nationallicence pecan nationallicence Coccinellidae nationallicence Fabaceae nationallicence ground cover nationallicence Rice Natasha R. Graduate student, Department of Horticulture and Landscape Architecture, Oklahoma State University, Stillwater, OK 74078 Smith Michael W. Professor, Department of Horticulture and Landscape Architecture, Oklahoma State University, Stillwater, OK 74078 Eikenbary Raymond D. Professor, Department of Entomology, Oklahoma State University, Stillwater, OK 74078 Arnold Don Survey Entomologist, Department of Entomology, Oklahoma State University, Stillwater, OK 74078 Tedders W. Louis Entomologist, USDA-ARS Southeastern Fruit and Tree Nut Research Laboratory, Byron, GA 31008 Wood Bruce Horticulturist, USDA-ARS Southeastern Fruit and Tree Nut Research Laboratory, Byron, GA 31008 Landgraf B. Scott Soil Scientist, Noble Foundation, Ardmore, OK 73402 Taylor Glenn G. Horticulturists, Noble Foundation, Ardmore, OK 73402. Barlow Gordon E. Horticulturists, Noble Foundation, Ardmore, OK 73402. American Journal of Alternative Agriculture Cambridge University Press 13/3(1998-09), 111-123 0889-1893 13:3<111 1998 13 AJA https://doi.org/10.1017/S0889189300007785 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0889189300007785 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rice Natasha R. Graduate student, Department of Horticulture and Landscape Architecture, Oklahoma State University, Stillwater, OK 74078 NATIONALLICENCE 700 1- Smith Michael W. Professor, Department of Horticulture and Landscape Architecture, Oklahoma State University, Stillwater, OK 74078 NATIONALLICENCE 700 1- Eikenbary Raymond D. Professor, Department of Entomology, Oklahoma State University, Stillwater, OK 74078 NATIONALLICENCE 700 1- Arnold Don Survey Entomologist, Department of Entomology, Oklahoma State University, Stillwater, OK 74078 NATIONALLICENCE 700 1- Tedders W. Louis Entomologist, USDA-ARS Southeastern Fruit and Tree Nut Research Laboratory, Byron, GA 31008 NATIONALLICENCE 700 1- Wood Bruce Horticulturist, USDA-ARS Southeastern Fruit and Tree Nut Research Laboratory, Byron, GA 31008 NATIONALLICENCE 700 1- Landgraf B. Scott Soil Scientist, Noble Foundation, Ardmore, OK 73402 NATIONALLICENCE 700 1- Taylor Glenn G. Horticulturists, Noble Foundation, Ardmore, OK 73402 NATIONALLICENCE 700 1- Barlow Gordon E. Horticulturists, Noble Foundation, Ardmore, OK 73402 NATIONALLICENCE 773 0- American Journal of Alternative Agriculture Cambridge University Press 13/3(1998-09), 111-123 0889-1893 13:3<111 1998 13 AJA CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge