Abstract
Manual weeding of intrarow weeds in direct‐sown leek and bulb onion crops grown organically can be very labour‐intensive. Four field experiments, two in direct‐sown leek and two in direct‐sown bulb onion were made in this investigation to study the effects of physical and cultural methods on intrarow weed numbers, time consumption for hand‐weeding and marketable yield parameters. The physical methods considered were: pre‐emergence flaming and harrowing, and post‐emergence hoeing close to the row (only leek) and vertical brush weeding. The cultural methods were: seed priming, slurry placement and cultivar choice (only leek). Generally, flaming plus brush weeding gave the highest intrarow weed control at 92% and 87%, respectively, in the two leek experiments and 39% (only brush weeding was effective) and 74%, respectively, in the two onion experiments. Time consumption for hand‐weeding after the different treatments was linearly related to the remaining numbers of intrarow weeds, with no significant influences of the experimental factors on the general relationship. Generally, the cultural methods had no significant influence on the effects of physical weeding in terms of their effect against intrarow weeds. They did not affect the tolerance or robustness of the crop plants against negative impact from the physical control methods. However, generally, seed priming and cultivar choice did improve yield in the leek experiments and seed priming also did so in the one experiment with onion.
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Claims 9
Claim · model-written summary
Flaming plus brush weeding gave the highest intrarow weed control in the two leek experiments (92% and 87%).
- Taxon
- leek
Allium ampeloprasume2 - Treatment
- flaming plus brush weedinge2
- Outcome
- intrarow weed controle2
- Direction
- higheste2
- Value
- 92% and 87%e2
- Setting
- field experimentse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Four field experiments, two in direct‐sown leek and two in direct‐sown bulb onion were made in this investigation to study the effects of physical and cultural methods on intrarow weed numbers, time consumption for hand‐weeding and marketable yield parameters.”
e2“Generally, flaming plus brush weeding gave the highest intrarow weed control at 92% and 87%, respectively, in the two leek experiments and 39% (only brush weeding was effective) and 74%, respectively, in the two onion experiments.”
Claim · model-written summary
In the second bulb onion experiment, flaming plus brush weeding gave the highest intrarow weed control (74%).
- Taxon
- bulb onione1
- Treatment
- flaming plus brush weedinge2
- Outcome
- intrarow weed controle2
- Direction
- higheste2
- Value
- 74%e2
Not reportedComparator
Verbatim
e1“Four field experiments, two in direct‐sown leek and two in direct‐sown bulb onion were made in this investigation to study the effects of physical and cultural methods on intrarow weed numbers, time consumption for hand‐weeding and marketable yield parameters.”
e2“Generally, flaming plus brush weeding gave the highest intrarow weed control at 92% and 87%, respectively, in the two leek experiments and 39% (only brush weeding was effective) and 74%, respectively, in the two onion experiments.”
Claim · model-written summary
In the first bulb onion experiment only brush weeding was effective, giving 39% intrarow weed control.
Verbatim
e1“Four field experiments, two in direct‐sown leek and two in direct‐sown bulb onion were made in this investigation to study the effects of physical and cultural methods on intrarow weed numbers, time consumption for hand‐weeding and marketable yield parameters.”
e2“Generally, flaming plus brush weeding gave the highest intrarow weed control at 92% and 87%, respectively, in the two leek experiments and 39% (only brush weeding was effective) and 74%, respectively, in the two onion experiments.”
Claim · model-written summary
Hand-weeding time was linearly related to the remaining numbers of intrarow weeds.
Not reportedDirection
Verbatim
e0“Manual weeding of intrarow weeds in direct‐sown leek and bulb onion crops grown organically can be very labour‐intensive.”
e3“Time consumption for hand‐weeding after the different treatments was linearly related to the remaining numbers of intrarow weeds, with no significant influences of the experimental factors on the general relationship.”
Claim · model-written summary
Cultural methods had no significant influence on the effect of physical weeding against intrarow weeds.
- Taxon
- leek and bulb onione0
- Treatment
- cultural methodse4
- Outcome
- effect against intrarow weedse4
- Direction
- no significant influencee4
Not reportedComparator
Verbatim
e0“Manual weeding of intrarow weeds in direct‐sown leek and bulb onion crops grown organically can be very labour‐intensive.”
e4“Generally, the cultural methods had no significant influence on the effects of physical weeding in terms of their effect against intrarow weeds.”
Claim · model-written summary
Cultural methods did not affect the tolerance or robustness of crop plants against the physical control methods.
- Taxon
- leek and bulb onione0
- Treatment
- cultural methodse4
- Outcome
- tolerance or robustness of the crop plantse5
- Direction
- did not affecte5
Not reportedComparator
Verbatim
e0“Manual weeding of intrarow weeds in direct‐sown leek and bulb onion crops grown organically can be very labour‐intensive.”
e4“Generally, the cultural methods had no significant influence on the effects of physical weeding in terms of their effect against intrarow weeds.”
e5“They did not affect the tolerance or robustness of the crop plants against negative impact from the physical control methods.”
Claim · model-written summary
Seed priming improved yield in the leek experiments.
- Taxon
- leekAllium ampeloprasume6
- Treatment
- seed priminge6
- Outcome
- yielde6
- Direction
- improvee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“However, generally, seed priming and cultivar choice did improve yield in the leek experiments and seed priming also did so in the one experiment with onion.”
Claim · model-written summary
Seed priming also improved yield in the one onion experiment.
- Taxon
- onion
Allium cepae6 - Treatment
- seed priminge6
- Outcome
- yielde6
- Direction
- improvee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“However, generally, seed priming and cultivar choice did improve yield in the leek experiments and seed priming also did so in the one experiment with onion.”
Claim · model-written summary
Cultivar choice improved yield in the leek experiments.
- Taxon
- leekAllium ampeloprasume6
- Treatment
- cultivar choicee6
- Outcome
- yielde6
- Direction
- improvee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“However, generally, seed priming and cultivar choice did improve yield in the leek experiments and seed priming also did so in the one experiment with onion.”
The same questions in other papers
seed treatment · yield · Allium cepa (onion)Positive and negative results
11 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
9 papers more in this group
See all 13 papers →herbicide · weed · Allium ampeloprasum (leek)Results agree
1 paper in the same direction as this paper
- 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.