Abstract
Application of 1,2-dibromo-3-chloropropane (DBCP) and subsoiling under the row in Tifton sandy loam heavily infested with Meloidogyne incognita increased yields of four soybean cultivars. These cultivars have levels of resistance to M. incognita as follows: 'Hutton', high; 'Essex', intermediate; and 'Davis' and 'Ransom', low. After growing these four cultivars, sub-soiling, and applying DBCP for 2 years in the same plots, the residual effects of these practices on yield of Davis cultivar and populations of M. incognita were studied. Greatest yields of Davis were obtained on plots previously planted to Hunon and Essex and on plots previously treated with DBCP for 2 years. Residual effects of subsoiling on yield were not significant. Data on nematode populations indicated that some residual effects occurred because of cultivars and nematicides. However, root-knot was suppressed only where DBCP was applied the 2 previous years. Although beneficial residual effects occurred, they were not sufficient for maximum soybean production.
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Claims 14
Claim · model-written summary
DBCP increased yields of four soybean cultivars.
- Taxon
- soybean
Glycine maxe0 - Treatment
- 1,2-dibromo-3-chloropropane (DBCP)e0
- Interactor
- Meloidogyne incognita
Meloidogyne incognitae0pathogen - Outcome
- yieldse0
- Direction
- increasede0
- Setting
- Tifton sandy loame0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“Application of 1,2-dibromo-3-chloropropane (DBCP) and subsoiling under the row in Tifton sandy loam heavily infested with Meloidogyne incognita increased yields of four soybean cultivars.”
Claim · model-written summary
Subsoiling increased yields of four soybean cultivars.
- Taxon
- soybean
Glycine maxe0 - Treatment
- subsoiling under the rowe0
- Interactor
- Meloidogyne incognita
Meloidogyne incognitae0pathogen - Outcome
- yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“Application of 1,2-dibromo-3-chloropropane (DBCP) and subsoiling under the row in Tifton sandy loam heavily infested with Meloidogyne incognita increased yields of four soybean cultivars.”
Claim · model-written summary
Hutton had high resistance to M. incognita.
- Taxon
- soybean
Glycine maxt0 - Material
- Huttone0
- Interactor
- M. incognita
Meloidogyne incognitae0pathogen - Outcome
- resistance to M. incognitae0
- Direction
- highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“These cultivars have levels of resistance to M. incognita as follows: 'Hutton', high; 'Essex', intermediate; and 'Davis' and 'Ransom', low.”
t0“soybean”
Claim · model-written summary
Essex had intermediate resistance to M. incognita.
- Taxon
- soybean
Glycine maxt0 - Material
- Essexe0
- Interactor
- M. incognita
Meloidogyne incognitae0pathogen - Outcome
- resistance to M. incognitae0
- Direction
- intermediatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“These cultivars have levels of resistance to M. incognita as follows: 'Hutton', high; 'Essex', intermediate; and 'Davis' and 'Ransom', low.”
t0“soybean”
Claim · model-written summary
Davis had low resistance to M. incognita.
- Taxon
- soybean
Glycine maxt0 - Material
- Davise0
- Interactor
- M. incognita
Meloidogyne incognitae0pathogen - Outcome
- resistance to M. incognitae0
- Direction
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“These cultivars have levels of resistance to M. incognita as follows: 'Hutton', high; 'Essex', intermediate; and 'Davis' and 'Ransom', low.”
t0“soybean”
Claim · model-written summary
Ransom had low resistance to M. incognita.
- Taxon
- soybean
Glycine maxt0 - Material
- Ransome0
- Interactor
- M. incognita
Meloidogyne incognitae0pathogen - Outcome
- resistance to M. incognitae0
- Direction
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“These cultivars have levels of resistance to M. incognita as follows: 'Hutton', high; 'Essex', intermediate; and 'Davis' and 'Ransom', low.”
t0“soybean”
Claim · model-written summary
Prior Hutton planting yielded the greatest subsequent Davis yields.
- Taxon
- soybean
Glycine maxt0 - Material
- Davise0
- Treatment
- previously planted to Hunone0
- Outcome
- yields of Davise0
- Direction
- Greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Greatest yields of Davis were obtained on plots previously planted to Hunon and Essex and on plots previously treated with DBCP for 2 years.”
t0“soybean”
Claim · model-written summary
Prior Essex planting yielded the greatest subsequent Davis yields.
- Taxon
- soybean
Glycine maxt0 - Material
- Davise0
- Treatment
- previously planted to Hunon and Essexe0
- Outcome
- yields of Davise0
- Direction
- Greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Greatest yields of Davis were obtained on plots previously planted to Hunon and Essex and on plots previously treated with DBCP for 2 years.”
t0“soybean”
Claim · model-written summary
Prior DBCP treatment yielded the greatest subsequent Davis yields.
- Taxon
- soybean
Glycine maxt0 - Material
- Davise0
- Treatment
- DBCP for 2 yearse0
- Outcome
- yields of Davise0
- Direction
- Greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Greatest yields of Davis were obtained on plots previously planted to Hunon and Essex and on plots previously treated with DBCP for 2 years.”
t0“soybean”
Claim · model-written summary
Residual subsoiling effects on Davis yield were not significant.
- Taxon
- soybean
Glycine maxt0 - Material
- Davise1
- Treatment
- subsoilinge0
- Outcome
- yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Residual effects of subsoiling on yield were not significant.”
e1“yield of Davis cultivar”
t0“soybean”
Claim · model-written summary
Cultivar history had residual effects on nematode populations.
- Taxon
- soybean
Glycine maxt0 - Interactor
- Meloidogyne incognita
Meloidogyne incognitat0 - Outcome
- nematode populationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“Data on nematode populations indicated that some residual effects occurred because of cultivars and nematicides.”
t0“soybean yields and Meloidogyne incognita populations”
Claim · model-written summary
Nematicide history had residual effects on nematode populations.
- Taxon
- soybean
Glycine maxt0 - Interactor
- Meloidogyne incognita
Meloidogyne incognitat0 - Outcome
- nematode populationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“Data on nematode populations indicated that some residual effects occurred because of cultivars and nematicides.”
t0“soybean yields and Meloidogyne incognita populations”
Claim · model-written summary
Root-knot was suppressed only with DBCP in the previous two years.
- Taxon
- soybean
Glycine maxt0 - Treatment
- DBCP was applied the 2 previous yearse0
- Interactor
- Meloidogyne incognita
Meloidogyne incognitat0pathogen - Outcome
- root-knote0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“root-knot was suppressed only where DBCP was applied the 2 previous years.”
t0“soybean yields and Meloidogyne incognita populations”
Claim · model-written summary
Beneficial residual effects did not provide maximum soybean production.
- Taxon
- soybean
Glycine maxe0 - Outcome
- maximum soybean productione0
- Direction
- not sufficiente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Although beneficial residual effects occurred, they were not sufficient for maximum soybean production.”
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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.