Abstract
A field trial was conducted at Holetta research center and farmers' fields during 2016/17 and 2017/18 to determine the effectiveness of S-metolachlor herbicide application on annual grasses and broad leaved weeds in faba bean. The experiment consisted of six treatments; S-metolachlor (1.0, 1.5 Lha -1 alone and S-metolachlor 1.0, 1.5 Lha -1 supplemented one hand weeding (25-30 days after crop emergence), farmers' practice twice hand weeding (25-30 and 55-60 days after crop emergence) and weedy checks arranged in randomized complete block design. The faba bean variety used was Dosha and the recommended fertilizer rate was applied. The herbicide was applied single pre emergence (1-3) days after planting using manual knapsack sprayer with a water volume of 200 Lha -1 rates for each plot. The result exhibited that pre emergence application of S-metolachlor @1.0 and 1.5 Lha -1 had a significant (P<0.05) effect on broad leaved and grass weeds; Polygonum nepalensis, Corrigiola capensis, Plantago lanceolata, Caylusea abyssinica, Spergula arvensis, Raphanus raphanistrum, Bidens pilosa, Galinsoga parviflora, Oxalis latifolia, and Guizotia scabra, Snowdenia polystachya, Setaria pumlia, Phalaris paradoxa and Avena fatua for a prolonged time after application and their density was significantly reduced. Between treatments significant differences of yield, plant height and seeds per plant was attained. The highest grain yield (2770 kg ha -1 ) was achieved from twice hand weeding followed by S-metolachlor 1.0 and 1.5 Lha -1 supplemented one hand weeding (2540, 2502 kg ha -1 ). The yield advantages were 64.8, 61.6 and 61.0% over the unweeded check.
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Claims 4
Claim · model-written summary
Pre-emergence S-metolachlor at 1.0 and 1.5 L/ha reduced broad-leaved and grass weed density in faba bean.
- Taxon
- faba bean
Vicia fabae0 - Treatment
- pre emergence application of S-metolachlor @1.0 and 1.5 Lha -1e1
- Interactor
- broad leaved and grass weedse1weed
- Outcome
- densitye2
- Direction
- reducede2
- Setting
- Holetta research center and farmers' fieldse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field trial was conducted at Holetta research center and farmers' fields during 2016/17 and 2017/18 to determine the effectiveness of S-metolachlor herbicide application on annual grasses and broad leaved weeds in faba bean”
e1“pre emergence application of S-metolachlor @1.0 and 1.5 Lha -1 had a significant (P<0.05) effect on broad leaved and grass weeds”
e2“their density was significantly reduced”
Claim · model-written summary
Weeding treatments produced significant differences in faba bean yield, plant height and seeds per plant.
- Taxon
- faba beanVicia fabae0
- Outcome
- yield, plant height and seeds per plante1
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field trial was conducted at Holetta research center and farmers' fields during 2016/17 and 2017/18 to determine the effectiveness of S-metolachlor herbicide application on annual grasses and broad leaved weeds in faba bean”
e1“Between treatments significant differences of yield, plant height and seeds per plant was attained”
Claim · model-written summary
Twice hand weeding gave the highest faba bean grain yield, 2770 kg/ha.
- Taxon
- faba beanVicia fabae0
- Treatment
- twice hand weedinge1
- Outcome
- grain yielde1
- Direction
- higheste1
- Value
- 2770 kg ha -1e1
- Setting
- Holetta research center and farmers' fieldse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field trial was conducted at Holetta research center and farmers' fields during 2016/17 and 2017/18 to determine the effectiveness of S-metolachlor herbicide application on annual grasses and broad leaved weeds in faba bean”
e1“The highest grain yield (2770 kg ha -1 ) was achieved from twice hand weeding”
Claim · model-written summary
Weeding treatments gave yield advantages of 64.8, 61.6 and 61.0% over the unweeded check.
- Taxon
- faba beanVicia fabae0
- Outcome
- yield advantagese1
- Direction
- increaseinferrede1
- Value
- 64.8, 61.6 and 61.0%e1
- Comparator
- unweeded checke1
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field trial was conducted at Holetta research center and farmers' fields during 2016/17 and 2017/18 to determine the effectiveness of S-metolachlor herbicide application on annual grasses and broad leaved weeds in faba bean”
e1“The yield advantages were 64.8, 61.6 and 61.0% over the unweeded check”
The same questions in other papers
herbicide · yield · Vicia faba (faba bean)Positive and negative results
31 papers in the same direction as this paper · 5 in the opposite direction · 1 reporting no difference from an alternative
- positive
- negative
- negative
34 papers more in this group
See all 38 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.