Selective control of annual bromes in perennial grass stands

Three soil-active herbicides: atrazine$[6\text{-}\text{chloro}\text{-}{\rm N}\text{-}\text{ethyl}\text{-}{\rm N}^{1}\text{-}(1\text{-}\text{methyethyl})\text{-}1,3,5\text{-}\text{triazine}\text{-}2,4\text{-}\text{diamine}]$; propham (1-methylethyl phenyl carbamate); and pronamide [3,5-dichloro(N-1,1...

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Bibliographic Details
Published in:Journal of range management 1987-11, Vol.40 (6), p.547-550
Main Authors: Currie, P.O, Volesky, J.D, Hilken, T.O, White, R.S
Format: Article
Language:English
Subjects:
ALIMENT POUR ANIMAUX
ATRAZINE
BROMUS
BROMUS JAPONICUS
BROMUS TECTORUM
CARBOHIDRATOS
CARBOHYDRATES
CRUDE PROTEIN
DESHERBAGE
ESCARDA
FEEDS
Forage
Forbs
FOSFORO
GLUCIDE
GRAMINEAE
Grasses
HERBICIDAS
HERBICIDE
HERBICIDES
Livestock
MONTANA
NUTRITIVE VALUE
PERENNE
PERENNIAL
Perennials
PHOSPHORE
PHOSPHORUS
PIENSOS
Plant Management
Plants
PROPHAM
PROPYZAMIDE
PROTEINA BRUTA
PROTEINE BRUTE
Range management
RENDEMENT
RENDIMIENTO
Sward
VALEUR NUTRITIVE
VALOR NUTRITIVO
WEED CONTROL
YIELDS
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Summary:Three soil-active herbicides: atrazine$[6\text{-}\text{chloro}\text{-}{\rm N}\text{-}\text{ethyl}\text{-}{\rm N}^{1}\text{-}(1\text{-}\text{methyethyl})\text{-}1,3,5\text{-}\text{triazine}\text{-}2,4\text{-}\text{diamine}]$; propham (1-methylethyl phenyl carbamate); and pronamide [3,5-dichloro(N-1,1-dimethyl-2-propynyl)benzamide] were applied in the fall, postemergence to annual bromegrasses at 2 rates. These herbicides were evaluated for their efficacy in selective control of cheatgrass (Bromus tectorum L.) and Japanese brome (Bromus japonicus Thunb.) in perennial stands of crested wheatgrass (Agropyron cristatum [L.] Gaertn.), pubescent wheatgrass (Thinopyrum intermedium Host), Russian wildrye (Psathrostachys juncea [Fisch.] Nevski), and western wheatgrass (Pascopyrum smithii (Rydb.) Löve) and blue grama (Bouteloua gracilis) [H.B.K.] Lag. Ex Griffiths. Yields of annual bromegrasses and perennial grasses and crude protein (CP), phosphorus and total nonstructural carbohydrate (TNC) content of perennial grasses were measured 2 consecutive years after the single herbicide application. Yields of annual bromegrasses from the 3 herbicide treatments averaged 91 and 47% less than those of the control the first and second year posttreatment, respectively. Pronamide provided substantially better control the second year posttreatment than the other 2 herbicides. Yields of perennial grasses in the majority of the herbicide treatment-study site combinations were significantly increased the first year posttreatment (P
ISSN:0022-409X
2162-2728
DOI:10.2307/3898878