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Response of weed to tillage and cover crop residue

Teasdale, J.R. (Weed Sci. Lab., USDA, ARS, Beltsville, MD) ; Beste, C.E ; Potts, W.E

Weed science, 1991-04, Vol.39 (2) [Periódico revisado por pares]

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Título:
Response of weed to tillage and cover crop residue
Autor: Teasdale, J.R. (Weed Sci. Lab., USDA, ARS, Beltsville, MD) ; Beste, C.E ; Potts, W.E
Assuntos: ARADURA ; CERO-LABRANZA ; CHENOPODIUM ; CONTROL CULTURAL ; DENSIDAD DE LA POBLACION ; DENSITE DE POPULATION ; DESHERBAGE ; DIGITARIA ; ELEUSINE INDICA ; ERAGROSTIS ; ESCARDA ; LABOUR ; LUTTE CULTURALE ; MALEZAS ; MARYLAND ; MAUVAISE HERBE ; NON TRAVAIL DU SOL ; PLANTAS DE COBERTURA ; PLANTE DE COUVERTURE ; RESIDU DE RECOLTE ; RESIDUOS DE COSECHAS ; RUBIACEAE ; SECALE CEREALE ; VICIA VILLOSA ; ZEA MAYS
É parte de: Weed science, 1991-04, Vol.39 (2)
Notas: H60
9156679
F07
Descrição: Total weed density increased after 1 yr of no-tillage and after 2 yr of conventional tillage in a 4-yr experiment with repeated assignment of the same treatment to the same plots. Large crabgrass, goosegrass, and carpetweed densities were higher in the no-tillage compared with the conventional-tillage treatment in at least 1 yr whereas common lambsquarters density was greater in the conventional-tillage treatment the last year of the experiment. Within the no-tillage treatment, rye or hairy vetch residue reduced total weed density an average of 78% compared to the treatment without cover crop when cover crop biomass exceeded 300 g m-2 and when residue covered more than 90% of the soil. Goosegrass, stinkgrass, and carpetweed densities were reduced by cover crop residue in at least 1 yr whereas large crabgrass was unaffected. Common lambsquarters density increased where rye was grown as a cover crop prior to conventional tillage. Despite differences in weed density among treatments, weed biomass was equivalent in all
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Response of weed to tillage and cover crop residue

Teasdale, J.R. (Weed Sci. Lab., USDA, ARS, Beltsville, MD) ; Beste, C.E ; Potts, W.E

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