Abstract
A 2‐year field study was conducted during the rainy seasons of 1999 and 2000 at Houfa in northern Jordan, to study the performance of two barley genotypes (CWB117‐77‐9‐7//Alpha/Durra and Wiesellburger/Ahor1303‐61) and their response to hand‐weeding (practised monthly during the growing seasons) and application of the pesticide 2,4‐dichlorophenoxy acetic acid (2,4‐D) at different growth stages. CWB117‐77‐9‐7//Alpha/Durra gave significantly higher grain yields of 1214.5 and 1362.5 kg ha −1 during 1999 and 2000, respectively. Differences in weed number and fresh weight were significant amongst various treatments in both seasons. Hand‐weeding proved to be the better weed control method. In both growing seasons, yield reductions occurred when 2,4‐D was applied to barley at stage 11–18 (leaves 1–8 unfolded) and stage 43 (mid‐boot). The hand‐weeding treatment was more effective than 2,4‐D applications in suppressing weed growth.
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Claims 5
Claim · model-written summary
Genotype CWB117‐77‐9‐7//Alpha/Durra gave higher barley grain yield in 1999 and 2000 in a semi-arid field trial.
- Taxon
- Barley
.jpg?width=60)
Hordeum vulgaret0 - Material
- CWB117‐77‐9‐7//Alpha/Durrae1
- Outcome
- grain yieldse1
- Direction
- highere1
- Value
- 1214.5 and 1362.5 kg ha −1e1
- Qualifier
- during 1999 and 2000e1
- Setting
- Houfa in northern Jordane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e1“CWB117‐77‐9‐7//Alpha/Durra gave significantly higher grain yields of 1214.5 and 1362.5 kg ha −1 during 1999 and 2000”
e0“A 2‐year field study was conducted during the rainy seasons of 1999 and 2000 at Houfa in northern Jordan”
t0“Response of Barley to Herbicide Versus Mechanical Weed Control”
Claim · model-written summary
Weed number and fresh weight differed significantly among weed control treatments in both seasons.
- Taxon
- BarleyHordeum vulgaret0
- Outcome
- weed number and fresh weighte2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Differences in weed number and fresh weight were significant amongst various treatments in both seasons”
t0“Response of Barley to Herbicide Versus Mechanical Weed Control”
Claim · model-written summary
Hand-weeding was more effective than 2,4-D applications in suppressing weed growth in barley.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- Hand‐weedinge3
- Outcome
- suppressing weed growthe4
- Direction
- more effectivee4
- Comparator
- 2,4‐D applicationse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Hand‐weeding proved to be the better weed control method”
e4“The hand‐weeding treatment was more effective than 2,4‐D applications in suppressing weed growth”
t0“Response of Barley to Herbicide Versus Mechanical Weed Control”
Claim · model-written summary
Applying 2,4-D to barley at stage 11–18 reduced yield.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- 2,4‐De5
- Outcome
- yielde5
- Direction
- reductionse5
- Qualifier
- stage 11–18 (leaves 1–8 unfolded)e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“In both growing seasons, yield reductions occurred when 2,4‐D was applied to barley at stage 11–18 (leaves 1–8 unfolded) and stage 43 (mid‐boot)”
t0“Response of Barley to Herbicide Versus Mechanical Weed Control”
Claim · model-written summary
Applying 2,4-D to barley at stage 43 reduced yield.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- 2,4‐De5
- Outcome
- yielde5
- Direction
- reductionse5
- Qualifier
- stage 43 (mid‐boot)e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“In both growing seasons, yield reductions occurred when 2,4‐D was applied to barley at stage 11–18 (leaves 1–8 unfolded) and stage 43 (mid‐boot)”
t0“Response of Barley to Herbicide Versus Mechanical Weed Control”
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