Abstract
Abstract Seven different herbicides were tested in 1967, and two of these chemicals were further evaluated in 1969 for their efficacy in onions grown in Lebanon. Chloroxuron at 6 kg a.i./ha and Sindone at 1.5 kg/ha gave a significant increase in the bulb weight and yield of onions over unweeded plots. Significant reductions in yield were observed from pre-em. applications of chlorbromuron at 3 kg/ha, propachlor at 6 kg/ha, Sindone at 0.5 kg/ha, and prometryne at 1 and 1.5 kg/ha. Good weed control was obtained as a result of pre-em. application of all herbicides tested. With post-em. application, weed control was not effective. With the exception of prometryne at 1.5 kg/ha which injured the onions and reduced the yield, the post-em. applications of herbicides tested gave no significant effect on onion yield. None of the treatments, in both pre-em. and post-em. applications, had any significant effect on leaf length, bulb index, bolting and splitting percentages, dry matter content, total soluble solids, or pungency of onions.
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Claims 11
Claim · model-written summary
Pre-emergence chloroxuron increased onion bulb weight and yield relative to unweeded plots.
- Taxon
- onions
Allium cepae0 - Treatment
- Chloroxuron at 6 kg a.i./hae0
- Outcome
- bulb weight and yielde0
- Direction
- increasee0
- Comparator
- unweeded plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chloroxuron at 6 kg a.i./ha and Sindone at 1.5 kg/ha gave a significant increase in the bulb weight and yield of onions over unweeded plots”
Claim · model-written summary
Pre-emergence Sindone at 1.5 kg/ha increased bulb weight and yield.
- Taxon
- onionsAllium cepae0
- Treatment
- Sindone at 1.5 kg/hae0
- Outcome
- bulb weight and yielde0
- Direction
- increasee0
- Comparator
- unweeded plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chloroxuron at 6 kg a.i./ha and Sindone at 1.5 kg/ha gave a significant increase in the bulb weight and yield of onions over unweeded plots”
Claim · model-written summary
Pre-emergence chlorbromuron at 3 kg/ha reduced onion yield.
- Taxon
- OnionsAllium cepat0
- Treatment
- chlorbromuron at 3 kg/hae0
- Outcome
- yielde0
- Direction
- reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant reductions in yield were observed from pre-em. applications of chlorbromuron at 3 kg/ha, propachlor at 6 kg/ha, Sindone at 0.5 kg/ha, and prometryne at 1 and 1.5 kg/ha”
t0“Onions”
Claim · model-written summary
Pre-emergence propachlor at 6 kg/ha reduced onion yield.
- Taxon
- OnionsAllium cepat0
- Treatment
- propachlor at 6 kg/hae0
- Outcome
- yielde0
- Direction
- reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant reductions in yield were observed from pre-em. applications of chlorbromuron at 3 kg/ha, propachlor at 6 kg/ha, Sindone at 0.5 kg/ha, and prometryne at 1 and 1.5 kg/ha”
t0“Onions”
Claim · model-written summary
Pre-emergence Sindone at 0.5 kg/ha reduced onion yield.
- Taxon
- OnionsAllium cepat0
- Treatment
- Sindone at 0.5 kg/hae0
- Outcome
- yielde0
- Direction
- reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant reductions in yield were observed from pre-em. applications of chlorbromuron at 3 kg/ha, propachlor at 6 kg/ha, Sindone at 0.5 kg/ha, and prometryne at 1 and 1.5 kg/ha”
t0“Onions”
Claim · model-written summary
Pre-emergence prometryne at 1 and 1.5 kg/ha reduced onion yield.
- Taxon
- OnionsAllium cepat0
- Treatment
- prometryne at 1 and 1.5 kg/hae0
- Outcome
- yielde0
- Direction
- reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant reductions in yield were observed from pre-em. applications of chlorbromuron at 3 kg/ha, propachlor at 6 kg/ha, Sindone at 0.5 kg/ha, and prometryne at 1 and 1.5 kg/ha”
t0“Onions”
Claim · model-written summary
Pre-emergence herbicides provided good weed control.
- Taxon
- OnionsAllium cepat0
- Treatment
- pre-em. application of all herbicides testede0
- Outcome
- weed controle0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Good weed control was obtained as a result of pre-em. application of all herbicides tested”
t0“Onions”
Claim · model-written summary
Post-emergence herbicides did not provide effective weed control.
- Taxon
- OnionsAllium cepat0
- Treatment
- post-em. applicatione0
- Outcome
- weed control was not effectivee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With post-em. application, weed control was not effective”
t0“Onions”
Claim · model-written summary
Post-emergence prometryne at 1.5 kg/ha injured onions and reduced yield.
- Taxon
- onionsAllium cepae0
- Treatment
- prometryne at 1.5 kg/hae0
- Outcome
- yielde0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“prometryne at 1.5 kg/ha which injured the onions and reduced the yield”
Claim · model-written summary
Other post-emergence herbicide applications had no significant effect on onion yield.
- Taxon
- onionAllium cepae0
- Treatment
- post-em. applications of herbicides testede0
- Outcome
- onion yielde0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the post-em. applications of herbicides tested gave no significant effect on onion yield”
Claim · model-written summary
Herbicide treatments had no significant effect on onion morphology, dry matter, soluble solids or pungency.
- Taxon
- onionsAllium cepae0
- Treatment
- treatments, in both pre-em. and post-em. applicationse0
- Outcome
- leaf length, bulb index, bolting and splitting percentagese0
- Direction
- Nonee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“None of the treatments, in both pre-em. and post-em. applications, had any significant effect on leaf length, bulb index, bolting and splitting percentages, dry matter content, total soluble solids, or pungency of onions”
The same questions in other papers
propachlor · yield · Allium cepa (onion)Results differ
1 paper in the same direction as this paper
- no effect
chloroxuron · yield · Allium cepa (onion)Results agree
1 paper in the same direction as this paper
- positive
herbicide · yield · Allium cepa (onion)Results differ
12 papers in the same direction as this paper · 75 in the opposite direction
- positive
- positive
- positive
84 papers more in this group
See all 88 papers →herbicide · weed · Allium cepa (onion)Positive and negative results
71 papers in the same direction as this paper · 2 in the opposite direction
- positive
- negative
- negative
70 papers more in this group
See all 74 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.