Abstract
Abstract Herbicides were evaluated for the selective control of weeds in rainfed groundnut (Arachis hypogaea L.) in field trials conducted at the Institute for Agricultural Research farms at Samaru and Kadawa, Nigeria, from 1975 to 1978. The sites are irrigated during the dry season and are located in the Northern Guinea and Sudan savanna zones, respectively. Alachlor at 3.0 and metolachlor at 1.5 and 3.0 kg a.i./ha applied pre‐emergence and followed by bentazone at 1.5 kg a.i./ha 3–4 weeks after sowing gave selective control of Cyperus esculentus L., Cyperus tuberosus Rottb. and annual grass and broadleaved weeds. The pod yields resulting from these treatments were comparable with those obtained with two hoe‐weedings. Pod yield reduction as a result of uncontrolled weed growth ranged from 31 to 70%. The wheat crop which followed in the dry season did not exhibit any phytotoxic effect or yield loss attributable to herbicide residues.
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Claims 7
Claim · model-written summary
The Alachlor at 3.0 and bentazone sequence selectively controlled named weeds in groundnut.
- Taxon
- groundnut (Arachis hypogaea L.)
Arachis hypogaeae0 - Treatment
- Alachlor at 3.0e1
- Interactor
- Cyperus esculentus L.
Cyperus esculentuse1weed - Second interactor
- Cyperus tuberosus Rottb.e1weed
- Outcome
- selective control of Cyperus esculentus L., Cyperus tuberosus Rottb. and annual grass and broadleaved weedse1
- Qualifier
- annual grass and broadleaved weedse1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rainfed groundnut (Arachis hypogaea L.)”
e1“Alachlor at 3.0 and metolachlor at 1.5 and 3.0 kg a.i./ha applied pre‐emergence and followed by bentazone at 1.5 kg a.i./ha 3–4 weeks after sowing gave selective control of Cyperus esculentus L., Cyperus tuberosus Rottb. and annual grass and broadleaved weeds.”
Claim · model-written summary
The metolachlor at 1.5 and bentazone sequence selectively controlled named weeds in groundnut.
- Taxon
- groundnut (Arachis hypogaea L.)Arachis hypogaeae0
- Treatment
- metolachlor at 1.5e1
- Interactor
- Cyperus esculentus L.Cyperus esculentuse1weed
- Second interactor
- Cyperus tuberosus Rottb.e1weed
- Outcome
- selective control of Cyperus esculentus L., Cyperus tuberosus Rottb. and annual grass and broadleaved weedse1
- Qualifier
- annual grass and broadleaved weedse1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rainfed groundnut (Arachis hypogaea L.)”
e1“Alachlor at 3.0 and metolachlor at 1.5 and 3.0 kg a.i./ha applied pre‐emergence and followed by bentazone at 1.5 kg a.i./ha 3–4 weeks after sowing gave selective control of Cyperus esculentus L., Cyperus tuberosus Rottb. and annual grass and broadleaved weeds.”
Claim · model-written summary
The metolachlor at 1.5 and 3.0 kg a.i./ha and bentazone sequence selectively controlled named weeds in groundnut.
- Taxon
- groundnut (Arachis hypogaea L.)Arachis hypogaeae0
- Treatment
- metolachlor at 1.5 and 3.0 kg a.i./hae1
- Interactor
- Cyperus esculentus L.Cyperus esculentuse1weed
- Second interactor
- Cyperus tuberosus Rottb.e1weed
- Outcome
- selective control of Cyperus esculentus L., Cyperus tuberosus Rottb. and annual grass and broadleaved weedse1
- Qualifier
- annual grass and broadleaved weedse1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rainfed groundnut (Arachis hypogaea L.)”
e1“Alachlor at 3.0 and metolachlor at 1.5 and 3.0 kg a.i./ha applied pre‐emergence and followed by bentazone at 1.5 kg a.i./ha 3–4 weeks after sowing gave selective control of Cyperus esculentus L., Cyperus tuberosus Rottb. and annual grass and broadleaved weeds.”
Claim · model-written summary
Herbicide treatment pod yields were comparable with two hoe-weedings.
- Taxon
- groundnut (Arachis hypogaea L.)Arachis hypogaeae0
- Treatment
- these treatmentse2
- Outcome
- pod yieldse2
- Comparator
- two hoe‐weedingse2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rainfed groundnut (Arachis hypogaea L.)”
e2“The pod yields resulting from these treatments were comparable with those obtained with two hoe‐weedings.”
Claim · model-written summary
Uncontrolled weed growth reduced groundnut pod yield by 31 to 70%.
- Taxon
- groundnut (Arachis hypogaea L.)Arachis hypogaeae0
- Treatment
- uncontrolled weed growthe3
- Interactor
- weede3weed
- Outcome
- Pod yielde3
- Direction
- reductione3
- Value
- 31 to 70%e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rainfed groundnut (Arachis hypogaea L.)”
e3“Pod yield reduction as a result of uncontrolled weed growth ranged from 31 to 70%.”
Claim · model-written summary
The following wheat crop showed no phytotoxic effect from herbicide residues.
- Taxon
- wheat
Triticum aestivume4 - Treatment
- herbicide residuese4
- Outcome
- phytotoxic effecte4
- Direction
- did not exhibite4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The wheat crop which followed in the dry season did not exhibit any phytotoxic effect or yield loss attributable to herbicide residues.”
Claim · model-written summary
The following wheat crop showed no yield loss from herbicide residues.
- Taxon
- wheatTriticum aestivume4
- Treatment
- herbicide residuese4
- Outcome
- yield losse4
- Direction
- did not exhibite4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The wheat crop which followed in the dry season did not exhibit any phytotoxic effect or yield loss attributable to herbicide residues.”
The same questions in other papers
metolachlor · Cyperus esculentus · Arachis hypogaea (peanut)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
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.