Abstract
Summary: Field trials were conducted to evaluate herbicides for weed control in groundnut from 1977 to 1979. The pre‐emergence herbicides used were alachlor and metolachlor, applied alone or mixed with terbutryne. Some treatments were followed either by post‐emergence bentazone or by one supplementary hoe‐weeding. In the southern Guinea savanna zone, where early grass weed control was more important, alachlor or metolachlor at 1.5 kg ha −1 gave adequate weed control and pod yields comparable with that of the hoe‐weeded check. There was no advantage in adding terbutryne, or in supplementary hoeweeding or post‐emergence bentazone application. In the northern Guinea savanna zone, grass and broad‐leaved weeds were equally important. Application of alachlor, metolachlor or mixtures with terbutryne (2:1) at 1.5 kg ha −1 required post‐emergence application of bentazone or supplementary hoe‐weeding for effective weed control and high pod yield. The reduction in pod yield on untreated control plots ranged between 18 and 70% of the best treatment in these trials.
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Claims 7
Claim · model-written summary
Alachlor at 1.5 kg ha −1 adequately controlled southern-zone weeds.
- Taxon
- groundnut
Arachis hypogaeat0 - Treatment
- alachlor or metolachlor at 1.5 kg ha −1e0
- Interactor
- grass weede0weed
- Outcome
- weed controle0
- Direction
- adequatee0
- Comparator
- hoe‐weeded checke0
- Setting
- southern Guinea savanna zonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the southern Guinea savanna zone, where early grass weed control was more important, alachlor or metolachlor at 1.5 kg ha −1 gave adequate weed control and pod yields comparable with that of the hoe‐weeded check”
t0“groundnut (Arachis hypogaea L.)”
Claim · model-written summary
Alachlor or metolachlor yielded pods comparably to hoe weeding in the southern zone.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- alachlor or metolachlor at 1.5 kg ha −1e0
- Outcome
- pod yieldse0
- Direction
- comparablee0
- Comparator
- hoe‐weeded checke0
- Setting
- southern Guinea savanna zonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the southern Guinea savanna zone, where early grass weed control was more important, alachlor or metolachlor at 1.5 kg ha −1 gave adequate weed control and pod yields comparable with that of the hoe‐weeded check”
t0“groundnut (Arachis hypogaea L.)”
Claim · model-written summary
Adding terbutryne provided no advantage in the southern zone.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- adding terbutrynee0
- Outcome
- advantagee0
- Direction
- no advantagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no advantage in adding terbutryne, or in supplementary hoeweeding or post‐emergence bentazone application”
t0“groundnut (Arachis hypogaea L.)”
Claim · model-written summary
Supplementary hoeweeding provided no advantage in the southern zone.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- supplementary hoeweedinge0
- Outcome
- advantagee0
- Direction
- no advantagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no advantage in adding terbutryne, or in supplementary hoeweeding or post‐emergence bentazone application”
t0“groundnut (Arachis hypogaea L.)”
Claim · model-written summary
Post-emergence bentazone provided no advantage in the southern zone.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- post‐emergence bentazone applicatione0
- Outcome
- advantagee0
- Direction
- no advantagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no advantage in adding terbutryne, or in supplementary hoeweeding or post‐emergence bentazone application”
t0“groundnut (Arachis hypogaea L.)”
Claim · model-written summary
In the northern zone, herbicides required bentazone or hoe weeding for effective weed control and high pod yield.
- Taxon
- groundnutArachis hypogaeat0
- Outcome
- required post‐emergence application of bentazone or supplementary hoe‐weeding for effective weed control and high pod yielde0
- Setting
- northern Guinea savanna zonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the northern Guinea savanna zone, grass and broad‐leaved weeds were equally important. Application of alachlor, metolachlor or mixtures with terbutryne (2:1) at 1.5 kg ha −1 required post‐emergence application of bentazone or supplementary hoe‐weeding for effective weed control and high pod yield”
t0“groundnut (Arachis hypogaea L.)”
Claim · model-written summary
Untreated plots had 18 to 70% lower pod yield than the best treatment.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- untreated control plotse0
- Outcome
- pod yielde0
- Direction
- reductione0
- Value
- 18 and 70%e0
- Comparator
- best treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The reduction in pod yield on untreated control plots ranged between 18 and 70% of the best treatment in these trials”
t0“groundnut (Arachis hypogaea L.)”
The same questions in other papers
alachlor · yield · Arachis hypogaea (peanut)Results differ
8 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- no effect
- no effect
8 papers more in this group
See all 12 papers →metolachlor · yield · Arachis hypogaea (peanut)Results differ
12 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- no effect
- negative
13 papers more in this group
See all 17 papers →alachlor · weed · Arachis hypogaea (peanut)Positive and negative results
2 papers in the same direction as this paper · 1 reporting no difference from an alternative
- no effect
- positive
- positive
metolachlor · weed · Arachis hypogaea (peanut)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
3 papers more in this group
See all 7 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.