Abstract
A field trial was conducted for 2 years in an Arredondo fine sand containing a tillage pan at 15-20 cm deep to determine the influence of subsoiling on the distribution of corn roots and plant-parasitic nematodes. Soil samples were taken at various depths and row positions at 30, 60, and 90 days after planting in field corn subsoiled under the row with two chisels and in non-subsoiled corn. At 30 and 60 days, in-row nematode population densities to 60 cm deep were not affected by subsoiling compared with population densities in nonsubsoiled plots. After 90 days, subsoiling had not affected total root length or root weight at the 20 depth-row position sampling combinations, but population densities of Meloidogyne incognita and Criconemella spp. had increased in subsoiled corn. Numbers of Pratylenchus zeae were not affected. Subsoiling generally resulted in a change in distribution of corn roots and nematodes in the soil profile but caused little total increase in either roots or numbers of nematodes. Corn yield was increased by subsoiling.
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Claims 8
Claim · model-written summary
Subsoiling did not affect in-row nematode densities at 30 and 60 days.
- Taxon
- field cornt0
- Treatment
- subsoilinge0
- Outcome
- in-row nematode population densitiese0
- Direction
- not affectede0
- Comparator
- nonsubsoiled plotse0
Not reportedOrgan / stage
Verbatim
e0“At 30 and 60 days, in-row nematode population densities to 60 cm deep were not affected by subsoiling compared with population densities in nonsubsoiled plots”
t0“field corn”
Claim · model-written summary
At 90 days subsoiling did not affect total corn root length or weight.
- Taxon
- field cornt0
- Treatment
- subsoilinge0
- Outcome
- total root length or root weighte0
- Direction
- had not affectede0
- Qualifier
- After 90 dayse0
Not reportedComparator
Verbatim
e0“After 90 days, subsoiling had not affected total root length or root weight at the 20 depth-row position sampling combinations”
t0“field corn”
Claim · model-written summary
Subsoiling increased Meloidogyne incognita densities at 90 days.
- Taxon
- field cornt0
- Treatment
- subsoiled corne0
- Interactor
- Meloidogyne incognita
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=60)
Meloidogyne incognitae0pest - Outcome
- population densities of Meloidogyne incognitae0
- 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“population densities of Meloidogyne incognita and Criconemella spp. had increased in subsoiled corn”
t0“field corn”
Claim · model-written summary
Subsoiling increased Criconemella spp. densities at 90 days.
- Taxon
- field cornt0
- Treatment
- subsoiled corne0
- Interactor
- Criconemella spp.e0pest
- Outcome
- population densities of Meloidogyne incognita and Criconemella spp.e0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“population densities of Meloidogyne incognita and Criconemella spp. had increased in subsoiled corn”
t0“field corn”
Claim · model-written summary
Pratylenchus zeae numbers were unaffected by subsoiling.
- Taxon
- field cornt0
- Treatment
- subsoilinge1
- Interactor
- Pratylenchus zeae
Pratylenchus zeaee0pest - Outcome
- Numbers of Pratylenchus zeaee0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Numbers of Pratylenchus zeae were not affected”
t0“field corn”
e1“subsoiling had not affected total root length”
Claim · model-written summary
Subsoiling changed the soil-profile distribution of corn roots and nematodes.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- Subsoilinge0
- Outcome
- distribution of corn roots and nematodes in the soil profilee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Subsoiling generally resulted in a change in distribution of corn roots and nematodes in the soil profile”
Claim · model-written summary
Subsoiling caused little total increase in roots or nematode counts.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Subsoilinge0
- Outcome
- roots or numbers of nematodese0
- Direction
- little total increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Subsoiling generally resulted in a change in distribution of corn roots and nematodes in the soil profile but caused little total increase in either roots or numbers of nematodes”
Claim · model-written summary
Subsoiling increased corn yield.
- Taxon
- CornZea mays subsp. mayse0
- Treatment
- subsoilinge0
- Outcome
- Corn yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn yield was increased by subsoiling”
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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.