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Titolo:
EFFECTS OF HERBICIDE-INDUCED HABITAT ALTERATIONS ON BLACKBIRD DAMAGE TO SUNFLOWER
Autore:
LINZ GM; BERGMAN DL; HOMAN HJ; BLEIER WJ;
Indirizzi:
N DAKOTA STATE UNIV,USDA,DENVER WILDLIFE RES CTR,N DAKOTA FIELD STN,STEVENS HALL FARGO ND 58105 N DAKOTA STATE UNIV,DEPT ZOOL FARGO ND 58105
Titolo Testata:
Crop protection
fascicolo: 8, volume: 14, anno: 1995,
pagine: 625 - 629
SICI:
0261-2194(1995)14:8<625:EOHHAO>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Keywords:
BLACKBIRDS; CATTAILS; DAMAGE; EMERGENT VEGETATION; HABITAT; ICTERINAE; SUNFLOWER; TYPHA SPP; WETLAND MANAGEMENT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
25
Recensione:
Indirizzi per estratti:
Citazione:
G.M. Linz et al., "EFFECTS OF HERBICIDE-INDUCED HABITAT ALTERATIONS ON BLACKBIRD DAMAGE TO SUNFLOWER", Crop protection, 14(8), 1995, pp. 625-629

Abstract

In August 1992, we treated cattail-dominated wetlands in four 23-km(2) blocks with aerially-applied glyphosate herbicide (5.31 hd(-1)). Four other blocks of wetlands were left untreated (reference). We assessed the effects of cattail (Typha spp.) reduction on roosting blackbird (Icterinae) numbers and sunflower damage within the blocks. Blackbird numbers did not differ between posttreatment years (P = 0.453) or between treated and reference wetlands (P = 0.469), averaging 6227 +/- 4185 (SE) birds per block. Sunflower damage within blocks was similar between posttreatment years (P = 0.250) and did not vary (P = 0.460) between treatments ((x) over bar = 2.9 +/- 1.2%). However, positive linearrelationships were detected between blackbird numbers (y) and hectares of live cattails (x) [(y = 442.2 x)] (p = 0.006) and between blackbird numbers (x) and kilograms of sunflower lost per hectare per year (y) [(y = 0.003 x)] (P = 0.0001). Cattail reduction appears to discourage roosting blackbirds and, thus, may reduce sunflower damage in adjacent fields.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 09:08:30