Paper · 1978 · Weed Research

Field trials with the controlled drop application of barban and difenzoquat for the control of wild oats (Avena fatua L.) in spring barley

B. J. WILSON; W. A. TAYLOR

9
claims
16
verbatim quotes
5
citations
2
research areas
—
Not open access

Abstract

Summary: Résumé: Zusammenfassung Barban was applied at 10 1/ha in 1974, and barban and difenzoquat at 5, 15 and 45 1/ha in 1975 using rotary atomizers to produce uniform drops within the range of 150‐350μm. These applications were compared with those from a conventional sprayer at 125‐2251 1/ha. In 1975 control of Avena fatua in barley with difenzoquat at 45 1/ha was equal or superior to, and at 15 1/ha little different from conventional applications. Control with barban at 45 1/ha and 15 1/ha was slightly poorer than that achieved conventionally. It is suggested that this poorer control was due to a reduction in crop competition; slight crop injury was caused by the oil solutions used for the controlled drop applications of barban. Control with both herbicides at 5 1/ha and (in 1974) with barban at 10 1/ha was inferior. The drop size used had little effect on the level of control except at the lowest volume rate where there was a slight advantage in favour of smaller drops. An optimum volume rate of between 15 and 45 1/ha is suggested for the controlled drop applications of these herbicides. Essais au champ de traitements avec des gouttelettes de dimension contrôlée avec le burbane et le difenzoquat, pour lutter contre la folle avoine (Avena fatua L.) duns l'orge de printemps Le barbane a été appliquéà 10 1 ha en 1974 et le barbane et le difenzoquat à 5, 15 et 45 1 ha en 1975 au moyen d'atomiserus rotalifs pour produire des goutlelettes de taille uniforme comprise entre 150 et 350 μm. Ces traitement one été compares avec ceux d'un pulvérisateur conventionnel opérant à 125 225 1 ha. En 1975, l'efficacnté contre Avena fatua dans l'orge avec le difenzoquat à 45 1/ha a étéégale ou supérieure, et à 15 1/ha peu différneté, de celle obtenue avec des traitements conventionnels. L'efficacité du barbane à 45 1/ha et à 15 1 ha a été légérement infériure à celle des traitements conventionnels. II est suggèré que ces résultants moins bons sont dus à une rèduction du pouvoir compétitive de la culture, laquelle a subi de légers dommages provoqués par les solutions huileuses utilisées pour les traitements au barban avec contrôle de la dimension des gouttes. L'efficacité a été inférieure avec les deux herbicides à 5 1/ha et (en 1974) avec le barnane à 10 1 ha. La talle ges gouttelettes utilisèe n'a eu que peu d'influence sur le degrè d efficacité, excepté avec le volume de bouillie sur le degré le plus faible oú un léger avantage s'est manifesté en faveur des plus petites gouttelettes. II est suggéré que le volume optimal de bouillie se situe entre 15 et 45 1/ha, pour les traitements à dimension de gouttelettes contrôlée, avec ces deux herbicides. Feldversuche mit Barban und Difenzouquat zur Bekämpfung von Flughafer (Avena fatua L.) in Sommergertste bei Applikation definterer Tröpfchengrössen Mit Hilfe von Rotationszertäubern die Tröpfehen im Bereich von 150‐350 μm erzeugen, wurden 1974 10 1/ha Barban und 1975 Barban und Difenzoquat mit 5, 15 und 45 1/ha appliziert. Dises Behandlungen wurden mil konventionellen Spritzverfahren bei Brühemengen von 125‐225 1/ha verglichen. Die Flughaferbekämpfung in Sommergerste war 1975 mit 45 1 ha Difenzoquat genauso gut oder sogar besser, als mit dem konventionellen Verfahren: bei 15 1 ha gah es geringe Unterschiede. Bei 45 und 15 1 ha Barban war der Bekämpfungserfolg geringfügig schlechter als ben herkömmlichen Verfahren. Es wird angenommen, dass die schlechtere Wirking in der verminderten Konkurrenz der Kulturpflanzen tag; an der Sommergersle traten durch die Ölformulierungen, die für die Applikation definierier Tröpfchengrössen verwendet wurden, leichte Schäden auf. Die Bekämpfung war nieht ausreichend, wenn beide Herbizide mit 5 1 ha, und Barban mit 10 1 ha (1974) eingesetzt wurden. Die Tröpfehengrösse hatte nur eine geringe Auswirkung auf den Bekämpfungserfolg, mit Ausnahme der kleinsten Brühemenge, bei der kleine Tröpfchen etwas besser wirkten. Für die Applikation definierter Tröpfchengrössen werden für diese Herbizide Brühemengen zwischen 15 und 45 1 ha empfohlen.

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Claims 9

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

At 45 l/ha, difenzoquat control of Avena fatua in barley was equal or superior to conventional application.

Treatment
difenzoquat at 45 1/hae0
Interactor
Avena fatuaAvena fatuae0weed
Outcome
control of Avena fatuae0
Direction
equal or superiore0
Comparator
conventional applicationse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗
Avena fatua
Avena fatua · InteractorHelge Oskarsen · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“control of Avena fatua in barley with difenzoquat at 45 1/ha was equal or superior to, and at 15 1/ha little different from conventional applications”

✓ located verbatim in the source · abstract, characters 305–454 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

At 15 l/ha, difenzoquat control of Avena fatua differed little from conventional application.

Treatment
difenzoquat at 45 1/hae0
Interactor
Avena fatuaAvena fatuae0weed
Outcome
control of Avena fatuae0
Direction
little differente0
Comparator
conventional applicationse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗
Avena fatua
Avena fatua · InteractorHelge Oskarsen · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“control of Avena fatua in barley with difenzoquat at 45 1/ha was equal or superior to, and at 15 1/ha little different from conventional applications”

✓ located verbatim in the source · abstract, characters 305–454 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

At 45 l/ha, controlled-drop barban gave slightly poorer wild oat control than conventional application.

Treatment
barban at 45 1/hae0
Interactor
wild oatsAvenat0weed
Outcome
Controle0
Direction
slightly poorere0
Comparator
conventionallye0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗
Avena
Avena · Interactor · picture of the genus (one of its species)Sendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Control with barban at 45 1/ha and 15 1/ha was slightly poorer than that achieved conventionally.”

✓ located verbatim in the source · abstract, characters 456–553 · show in text ↑
t0

“wild oats (Avena fatua L.) in spring barley”

✓ located verbatim in the source · title, characters 95–138 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

At 15 l/ha, controlled-drop barban gave slightly poorer wild oat control than conventional application.

Treatment
barbane0
Interactor
wild oatsAvenat0weed
Outcome
Controle0
Direction
slightly poorere0
Qualifier
15 1/hae0
Comparator
conventionallye0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗
Avena
Avena · Interactor · picture of the genus (one of its species)Sendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Control with barban at 45 1/ha and 15 1/ha was slightly poorer than that achieved conventionally.”

✓ located verbatim in the source · abstract, characters 456–553 · show in text ↑
t0

“wild oats (Avena fatua L.) in spring barley”

✓ located verbatim in the source · title, characters 95–138 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Oil solutions for controlled-drop barban caused slight barley injury.

Treatment
oil solutions used for the controlled drop applications of barbane0
Outcome
crop injurye0
Direction
slighte0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“slight crop injury was caused by the oil solutions used for the controlled drop applications of barban”

✓ located verbatim in the source · abstract, characters 639–741 · show in text ↑
t0

“wild oats (Avena fatua L.) in spring barley”

✓ located verbatim in the source · title, characters 95–138 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Wild oat control with both herbicides at 5 l/ha was inferior.

Treatment
both herbicides at 5 1/hae0
Interactor
wild oatsAvenat0weed
Outcome
Controle0
Direction
inferiore0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗
Avena
Avena · Interactor · picture of the genus (one of its species)Sendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Control with both herbicides at 5 1/ha and (in 1974) with barban at 10 1/ha was inferior.”

✓ located verbatim in the source · abstract, characters 743–832 · show in text ↑
t0

“wild oats (Avena fatua L.) in spring barley”

✓ located verbatim in the source · title, characters 95–138 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Wild oat control with barban at 10 l/ha in 1974 was inferior.

Treatment
barban at 10 1/hae0
Interactor
wild oatsAvenat0weed
Outcome
Controle0
Direction
inferiore0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗
Avena
Avena · Interactor · picture of the genus (one of its species)Sendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Control with both herbicides at 5 1/ha and (in 1974) with barban at 10 1/ha was inferior.”

✓ located verbatim in the source · abstract, characters 743–832 · show in text ↑
t0

“wild oats (Avena fatua L.) in spring barley”

✓ located verbatim in the source · title, characters 95–138 · show in text ↑
Observationobservedoriginal resultmixedmeasured

Claim · model-written summary

Drop size had little effect on wild oat control, except smaller drops were advantageous at the lowest volume.

Interactor
wild oatsAvenat0weed
Outcome
level of controle0
Direction
little effecte0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗
Avena
Avena · Interactor · picture of the genus (one of its species)Sendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The drop size used had little effect on the level of control except at the lowest volume rate where there was a slight advantage in favour of smaller drops.”

✓ located verbatim in the source · abstract, characters 833–989 · show in text ↑
t0

“wild oats (Avena fatua L.) in spring barley”

✓ located verbatim in the source · title, characters 95–138 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors suggest a 15 to 45 l/ha optimum volume for controlled-drop application of these herbicides.

Outcome
optimum volume ratee0
Value
between 15 and 45 1/hae0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“An optimum volume rate of between 15 and 45 1/ha is suggested for the controlled drop applications of these herbicides.”

✓ located verbatim in the source · abstract, characters 990–1109 · show in text ↑
t0

“wild oats (Avena fatua L.) in spring barley”

✓ located verbatim in the source · title, characters 95–138 · show in text ↑

barban · Avena · Hordeum vulgare (barley)Positive and negative results

3 papers: 2 positive, 1 negative or no effect

2 in the opposite direction

  1. positive
  2. positive
See all 3 papers →

herbicide · Avena · Hordeum vulgare (barley)Positive and negative results

3 papers: 1 positive, 2 negative or no effect

1 paper in the same direction as this paper · 1 in the opposite direction

  1. positive
  2. negative
See all 3 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.