Abstract
In 1967 at Armidale, New South Wales, oats (Avena sativa cv. Cooba) were grown with or without 180 kg N ha-I and rotationally grazed on a three paddock system from July 13 to November 16 with Border Leicester x Merino lambs. Stocking rates were 20,40 or 60 sheep ha-1 (experiment 1). In 1968 (experiment 2) oats were rotationally grazed on either a three or four paddock system at stocking rates of 20, 30 or 40 lambs ha-1. Grazing began on either June 6 or July 17 and terminated on November 20. The rotational grazing systems allowed for a grazing period of two weeks and regrowth periods of four or six weeks. Application of nitrogen increased the quantity of dry matter available prior to grazing in 1967 by 20 per cent but did not affect regrowth rates during winter and early spring. In 1968, approximately 33 per cent more forage was available prior to grazing in mid-July than in early June. There was little effect of grazing management on the rate of regrowth. In both years, regrowth rates were low during winter and carry over residue was required to provide a continuity of available forage. Liveweight gains of lambs during winter and early spring reached 170 to 200 g head-1 day-1 at stocking rates of 20 or 30 sheep ha-1 for the early and late commencement of grazing treatments respectively. Lower gains to 120 g head-1 day-1 were recorded for six to eight weeks at higher stocking rates but subsequent liveweight losses occurred; these being greater if grazing commenced early. Neither N nor grazing management system materially affected liveweight gains. Approximately 1.5 kg available dry matter head-1day-1 was required at the start of each fortnightly grazing period to ensure maximum liveweight gains
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Claims 12
Claim · model-written summary
Nitrogen application increased dry matter available prior to grazing by 20 per cent in 1967 in oats.
- Taxon
- oats
Avena sativae2 - Material
- cv. Coobae2
- Treatment
- Application of nitrogene0
- Outcome
- dry matter available prior to grazinge0
- Direction
- increasede0
- Value
- 20 per cente0
- Comparator
- without 180 kg N ha-Ie1
- Setting
- Armidale, New South Walese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of nitrogen increased the quantity of dry matter available prior to grazing in 1967 by 20 per cent but did not affect regrowth rates during winter and early spring”
e1“grown with or without 180 kg N ha-I”
e2“oats (Avena sativa cv. Cooba) were grown”
e3“In 1967 at Armidale, New South Wales”
Claim · model-written summary
Nitrogen application did not affect oat regrowth rates during winter and early spring.
- Taxon
- oatsAvena sativae2
- Treatment
- Application of nitrogene0
- Outcome
- regrowth rates during winter and early springe0
- Direction
- no_changeinferrede0
- Comparator
- without 180 kg N ha-Ie1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of nitrogen increased the quantity of dry matter available prior to grazing in 1967 by 20 per cent but did not affect regrowth rates during winter and early spring”
e1“grown with or without 180 kg N ha-I”
e2“oats (Avena sativa cv. Cooba) were grown”
Claim · model-written summary
Grazing from mid-July gave about 33 per cent more forage available before grazing than grazing from early June in 1968.
- Taxon
- oatsAvena sativae1
- Treatment
- mid-Julye0
- Outcome
- forage was available prior to grazinge0
- Direction
- moree0
- Value
- 33 per cente0
- Comparator
- early Junee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1968, approximately 33 per cent more forage was available prior to grazing in mid-July than in early June”
e1“In 1968 (experiment 2) oats were rotationally grazed”
Claim · model-written summary
Grazing management had little effect on the rate of oat regrowth.
- Taxon
- oatsAvena sativae1
- Treatment
- grazing managemente0
- Outcome
- rate of regrowthe0
- Direction
- no_changeinferrede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was little effect of grazing management on the rate of regrowth”
e1“In 1968 (experiment 2) oats were rotationally grazed”
Claim · model-written summary
Lamb liveweight gains in winter and early spring reached 170 to 200 g head-1 day-1 at 20 or 30 sheep ha-1 on oats.
- Taxon
- oatsAvena sativae1
- Treatment
- stocking rates of 20 or 30 sheep ha-1e0
- Outcome
- Liveweight gains of lambse0
- Value
- 170 to 200 g head-1 day-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Liveweight gains of lambs during winter and early spring reached 170 to 200 g head-1 day-1 at stocking rates of 20 or 30 sheep ha-1”
e1“In 1968 (experiment 2) oats were rotationally grazed”
Claim · model-written summary
Higher stocking rates lowered lamb liveweight gains to 120 g head-1 day-1 for six to eight weeks.
- Taxon
- oatsAvena sativae1
- Treatment
- higher stocking ratese0
- Outcome
- Liveweight gainse2
- Direction
- Lowere0
- Value
- 120 g head-1 day-1e0
- Qualifier
- for six to eight weekse0
- Comparator
- stocking rates of 20 or 30 sheep ha-1e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lower gains to 120 g head-1 day-1 were recorded for six to eight weeks at higher stocking rates”
e1“In 1968 (experiment 2) oats were rotationally grazed”
e2“Liveweight gains of lambs during winter and early spring reached 170 to 200 g head-1 day-1 at stocking rates of 20 or 30 sheep ha-1”
Claim · model-written summary
Subsequent liveweight losses in lambs were greater when grazing commenced early.
- Taxon
- oatsAvena sativae1
- Treatment
- grazing commenced earlye0
- Outcome
- liveweight lossese0
- Direction
- greatere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“subsequent liveweight losses occurred; these being greater if grazing commenced early”
e1“In 1968 (experiment 2) oats were rotationally grazed”
Claim · model-written summary
Nitrogen did not materially affect lamb liveweight gains.
- Taxon
- oatsAvena sativae1
- Treatment
- Ne0
- Outcome
- liveweight gainse0
- Direction
- no_changeinferrede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither N nor grazing management system materially affected liveweight gains”
e1“In 1968 (experiment 2) oats were rotationally grazed”
Claim · model-written summary
Grazing management system did not materially affect lamb liveweight gains.
- Taxon
- oatsAvena sativae1
- Treatment
- grazing management systeme0
- Outcome
- liveweight gainse0
- Direction
- no_changeinferrede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither N nor grazing management system materially affected liveweight gains”
e1“In 1968 (experiment 2) oats were rotationally grazed”
Claim · model-written summary
Oat regrowth rates were low during winter in both years.
- Taxon
- oatsAvena sativae1
- Outcome
- regrowth ratese0
- Qualifier
- low during wintere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both years, regrowth rates were low during winter and carry over residue was required to provide a continuity of available forage”
e1“In 1968 (experiment 2) oats were rotationally grazed”
Claim · model-written summary
Carry-over residue is required to give a continuous supply of available forage in oats grazing.
- Taxon
- oatsAvena sativae1
- Treatment
- carry over residuee0
- Outcome
- continuity of available foragee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“carry over residue was required to provide a continuity of available forage”
e1“In 1968 (experiment 2) oats were rotationally grazed”
Claim · model-written summary
About 1.5 kg available dry matter per head per day should be present at the start of each fortnightly grazing period to ensure maximum liveweight gains.
- Taxon
- oatsAvena sativae1
- Outcome
- available dry mattere0
- Value
- Approximately 1.5 kge0
- Qualifier
- at the start of each fortnightly grazing periode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Approximately 1.5 kg available dry matter head-1day-1 was required at the start of each fortnightly grazing period to ensure maximum liveweight gains”
e1“In 1968 (experiment 2) oats were rotationally grazed”
The same questions in other papers
nitrogen · growth · Avena sativa (oats)Positive and negative results
37 papers in the same direction as this paper · 10 in the opposite direction
- positive
- negative
- no effect
44 papers more in this group
See all 48 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.