Abstract
Abstract Carrot roots ( Daucus carota L.) and onion bulbs ( Allium cepa L.) were planted in Kidman silt loam immediately after DCPA (dimethyl tetrachloroterephthalate), ethofumesate (2-ethoxy-2,3-dmydro-3,3-dimethyl-5-benzofuranol methanesulfonate), linuron (3-(3,4-dichlo-rophyenyl)-l-methoxy-l-methylurea), napropamide (2-( a -naphthoxy) N , N -diethylpropiona-mide), or trifluralin ( a , a , a -trifluoro-2,6 dinitro- N , N -dipropyl- p -toluidine) had been soil incorporated. In a second experiment, carrot roots and onion bulbs were planted in a conventionally-prepared seed bed or among vigorously growing wheat plants (7 to 10 cm tall). DCPA, linuron, and oryzalin (3,5-dinitro- N 4 , N 4 -dipropylsulfanilamide) plus glyphosate ( N -(phos-phonomethyl)glycine) were surface applied to these seedbeds after planting but prior to crop emergence. Methazole (2-(3,4-dichlorophenyl)-4-methyl-l,2,4-oxadiazolidine-3,5-dione) and nitrofen (2,4-dichlorophenyl- p -nitrophenyl ether) were applied postemergence. Chemical treatments significantly altered the seed yields within the no-tillage method. Carrots grown in the tilled plots exhibited no effect of chemical treatments on seed yield. Comparison of tillage methods indicated a highly significant reduction in carrot seed yield relative to the no-tillage plots. Those on the non-weeded control and no-tillage plots showed a highly significant reduction in seed yield. Many of the onion bulbs from male-fertile lines failed to develop seedstalks in the plots sprayed with linuron and napropamide and those that did were delayed in development. Linuron and ethofumesate reduced the numbers of onion flowers per umbel. Onions grown in the tilled plots exhibited no effect of chemical treatments on seed yield. Those on the non-weeded control and no-tillage plots showed a highly significant reduction in onion seed yield. Comparison of tillage methods indicated a highly significant reduction in onion seed yield relative to the no-tillage plots.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 13
Claim · model-written summary
Chemical treatments significantly altered seed yields within the no-tillage method in carrot and onion.
- Taxon
- Carrot roots
Daucus carotae1 - Treatment
- Chemical treatmentse2
- Outcome
- seed yieldse2
- Qualifier
- within the no-tillage methode2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Carrot roots ( Daucus carota L.) and onion bulbs ( Allium cepa L.)”
e2“Chemical treatments significantly altered the seed yields within the no-tillage method.”
Claim · model-written summary
Chemical treatments had no effect on carrot seed yield in the tilled plots.
- Taxon
- CarrotsDaucus carotae3
- Treatment
- chemical treatmentse3
- Outcome
- seed yielde3
- Direction
- no effecte3
- Setting
- tilled plotse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Carrot roots ( Daucus carota L.) and onion bulbs ( Allium cepa L.)”
e3“Carrots grown in the tilled plots exhibited no effect of chemical treatments on seed yield.”
Claim · model-written summary
Tillage methods reduced carrot seed yield relative to the no-tillage plots, with high significance.
- Taxon
- carrotDaucus carotae4
- Treatment
- tillage methodse4
- Outcome
- seed yielde4
- Direction
- reductione4
- Comparator
- no-tillage plotse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Carrot roots ( Daucus carota L.) and onion bulbs ( Allium cepa L.)”
e4“Comparison of tillage methods indicated a highly significant reduction in carrot seed yield relative to the no-tillage plots.”
Claim · model-written summary
Non-weeded control and no-tillage plots reduced carrot seed yield, with high significance.
- Taxon
- CarrotsDaucus carotae3
- Treatment
- non-weeded controle5
- Outcome
- seed yielde5
- Direction
- reductione5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Carrot roots ( Daucus carota L.) and onion bulbs ( Allium cepa L.)”
e3“Carrots grown in the tilled plots exhibited no effect of chemical treatments on seed yield.”
e5“Those on the non-weeded control and no-tillage plots showed a highly significant reduction in seed yield.”
Claim · model-written summary
Linuron caused many onion bulbs from male-fertile lines to fail to develop seedstalks.
- Taxon
- onion bulbse6
- Material
- male-fertile linese6
- Treatment
- linurone6
- Outcome
- failed to develop seedstalkse6
Not reportedComparatorDirection
Verbatim
e1“Carrot roots ( Daucus carota L.) and onion bulbs ( Allium cepa L.)”
e6“Many of the onion bulbs from male-fertile lines failed to develop seedstalks in the plots sprayed with linuron and napropamide and those that did were delayed in development.”
Claim · model-written summary
Napropamide caused many onion bulbs from male-fertile lines to fail to develop seedstalks.
- Taxon
- onion bulbse6
- Material
- male-fertile linese6
- Treatment
- napropamidee6
- Outcome
- failed to develop seedstalkse6
Not reportedComparatorDirection
Verbatim
e1“Carrot roots ( Daucus carota L.) and onion bulbs ( Allium cepa L.)”
e6“Many of the onion bulbs from male-fertile lines failed to develop seedstalks in the plots sprayed with linuron and napropamide and those that did were delayed in development.”
Claim · model-written summary
Linuron delayed development of the onion bulbs that did develop seedstalks.
Not reportedComparatorDirection
Verbatim
e1“Carrot roots ( Daucus carota L.) and onion bulbs ( Allium cepa L.)”
e6“Many of the onion bulbs from male-fertile lines failed to develop seedstalks in the plots sprayed with linuron and napropamide and those that did were delayed in development.”
Claim · model-written summary
Napropamide delayed development of the onion bulbs that did develop seedstalks.
Not reportedComparatorDirection
Verbatim
e1“Carrot roots ( Daucus carota L.) and onion bulbs ( Allium cepa L.)”
e6“Many of the onion bulbs from male-fertile lines failed to develop seedstalks in the plots sprayed with linuron and napropamide and those that did were delayed in development.”
Claim · model-written summary
Linuron reduced the number of onion flowers per umbel.
- Taxon
- onion
Allium cepae7 - Treatment
- Linurone7
- Outcome
- numbers of onion flowers per umbele7
- Direction
- reducede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Carrot roots ( Daucus carota L.) and onion bulbs ( Allium cepa L.)”
e7“Linuron and ethofumesate reduced the numbers of onion flowers per umbel.”
Claim · model-written summary
Ethofumesate reduced the number of onion flowers per umbel.
- Taxon
- onionAllium cepae7
- Treatment
- ethofumesatee7
- Outcome
- numbers of onion flowers per umbele7
- Direction
- reducede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Carrot roots ( Daucus carota L.) and onion bulbs ( Allium cepa L.)”
e7“Linuron and ethofumesate reduced the numbers of onion flowers per umbel.”
Claim · model-written summary
Chemical treatments had no effect on onion seed yield in the tilled plots.
- Taxon
- OnionsAllium cepae2
- Treatment
- chemical treatmentse2
- Outcome
- seed yielde2
- Direction
- no effecte2
- Setting
- tilled plotse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Carrot roots ( Daucus carota L.) and onion bulbs ( Allium cepa L.)”
e2“Onions grown in the tilled plots exhibited no effect of chemical treatments on seed yield.”
Claim · model-written summary
Non-weeded control and no-tillage plots reduced onion seed yield, with high significance.
- Taxon
- onionAllium cepae2
- Treatment
- non-weeded controle2
- Outcome
- seed yielde2
- Direction
- reductione2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Carrot roots ( Daucus carota L.) and onion bulbs ( Allium cepa L.)”
e2“Those on the non-weeded control and no-tillage plots showed a highly significant reduction in onion seed yield.”
Claim · model-written summary
Tillage methods reduced onion seed yield relative to the no-tillage plots, with high significance.
- Taxon
- onionAllium cepae2
- Treatment
- tillage methodse2
- Outcome
- seed yielde2
- Direction
- reductione2
- Comparator
- no-tillage plotse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Carrot roots ( Daucus carota L.) and onion bulbs ( Allium cepa L.)”
e2“Comparison of tillage methods indicated a highly significant reduction in onion seed yield relative to the no-tillage plots.”
The same questions in other papers
tillage · yield · Daucus carota (carrot)Positive and negative results
3 papers in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
7 papers more in this group
See all 11 papers →tillage · yield · Allium cepa (onion)Positive and negative results
11 in the opposite direction
- positive
- positive
- positive
8 papers more in this group
See all 12 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.