Abstract
The influence of herbicides and mono- and multicropping sequences on population densities of nematode species common in corn, cotton, peanut, and soybean fields in the southeastern United States was studied for 4 years. Each experimental plot was sampled at monthly intervals. The application of herbicides did not significantly affect nematode population densities. Meloidogyne incognita and Trichodorus christiei increased rapidly on corn and cotton, but were suppressed by peanut and soybean. More Pratylenchus spp. occurred on corn and soybean than on cotton and peanut. Criconemoides ornatus increased rapidly on corn and peanut, but was suppressed by cotton and soybean. Helicotylenchus dihystera was more numerous on cotton and soybean than on corn and peanut. Numbers of Xiphinema americanum remained low on all crops. The peanut sequence was the most effective monocrop system for suppressing most nematode species. Multi-crop systems, corn-peanut-cotton-soybean and cotton-soybean-corn-peanut, were equally effective in suppressing nematode densities.
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Claims 12
Claim · model-written summary
Herbicide application did not significantly affect nematode population densities.
- Taxon
- corn, cotton, peanut, and soybean
Gossypium hirsutum
Arachis hypogaea
Glycine maxZea mays subsp. mayse1
- Treatment
- application of herbicidese0
- Interactor
- plant-parasitic nematodest0pest
- Outcome
- nematode population densitiese0
- Direction
- no_changeinferrede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.



Verbatim
t0“Crop rotation and herbicide effects on population densities of plant-parasitic nematodes.”
e0“The application of herbicides did not significantly affect nematode population densities”
e1“nematode species common in corn, cotton, peanut, and soybean fields”
Claim · model-written summary
Meloidogyne incognita increased on corn and cotton compared with peanut and soybean.
- Taxon
- corn, cotton, peanut, and soybean
Gossypium hirsutum
Arachis hypogaea
Glycine maxZea mays subsp. mayse1
- Treatment
- corn and cottone0
- Interactor
- Meloidogyne incognita
Meloidogyne incognitae0pest - Outcome
- Meloidogyne incognitae0
- Direction
- increasede0
- Comparator
- peanut and soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.



Verbatim
e0“Meloidogyne incognita and Trichodorus christiei increased rapidly on corn and cotton, but were suppressed by peanut and soybean”
e1“nematode species common in corn, cotton, peanut, and soybean fields”
Claim · model-written summary
Trichodorus christiei increased on corn and cotton compared with peanut and soybean.
- Taxon
- corn, cotton, peanut, and soybean
Gossypium hirsutum
Arachis hypogaea
Glycine maxZea mays subsp. mayse1
- Treatment
- corn and cottone0
- Interactor
- Trichodorus christieie0pest
- Outcome
- Trichodorus christieie0
- Direction
- increasede0
- Comparator
- peanut and soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.



Verbatim
e0“Meloidogyne incognita and Trichodorus christiei increased rapidly on corn and cotton, but were suppressed by peanut and soybean”
e1“nematode species common in corn, cotton, peanut, and soybean fields”
Claim · model-written summary
Meloidogyne incognita was suppressed by peanut and soybean compared with corn and cotton.
- Taxon
- corn, cotton, peanut, and soybean
Gossypium hirsutum
Arachis hypogaea
Glycine maxZea mays subsp. mayse1
- Treatment
- peanut and soybeane0
- Interactor
- Meloidogyne incognita
Meloidogyne incognitae0pest - Outcome
- Meloidogyne incognitae0
- Direction
- suppressede0
- Comparator
- corn and cottone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.



Verbatim
e0“Meloidogyne incognita and Trichodorus christiei increased rapidly on corn and cotton, but were suppressed by peanut and soybean”
e1“nematode species common in corn, cotton, peanut, and soybean fields”
Claim · model-written summary
Trichodorus christiei was suppressed by peanut and soybean compared with corn and cotton.
- Taxon
- corn, cotton, peanut, and soybean
Gossypium hirsutum
Arachis hypogaea
Glycine maxZea mays subsp. mayse1
- Treatment
- peanut and soybeane0
- Interactor
- Trichodorus christieie0pest
- Outcome
- Trichodorus christieie0
- Direction
- suppressede0
- Comparator
- corn and cottone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.



Verbatim
e0“Meloidogyne incognita and Trichodorus christiei increased rapidly on corn and cotton, but were suppressed by peanut and soybean”
e1“nematode species common in corn, cotton, peanut, and soybean fields”
Claim · model-written summary
Pratylenchus spp. occurred more on corn and soybean than on cotton and peanut.
- Taxon
- corn, cotton, peanut, and soybean
Gossypium hirsutum
Arachis hypogaea
Glycine maxZea mays subsp. mayse1
- Treatment
- corn and soybeane0
- Interactor
- Pratylenchus spp.
Pratylenchuse0pest - Outcome
- Pratylenchus spp.e0
- Direction
- Moree0
- Comparator
- cotton and peanute0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.



Verbatim
e0“More Pratylenchus spp. occurred on corn and soybean than on cotton and peanut”
e1“nematode species common in corn, cotton, peanut, and soybean fields”
Claim · model-written summary
Criconemoides ornatus increased on corn and peanut compared with cotton and soybean.
- Taxon
- corn, cotton, peanut, and soybean
Gossypium hirsutum
Arachis hypogaea
Glycine maxZea mays subsp. mayse1
- Treatment
- corn and peanute0
- Interactor
- Criconemoides ornatusMesocriconema ornatume0pest
- Outcome
- Criconemoides ornatuse0
- Direction
- increasede0
- Comparator
- cotton and soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.



Verbatim
e0“Criconemoides ornatus increased rapidly on corn and peanut, but was suppressed by cotton and soybean”
e1“nematode species common in corn, cotton, peanut, and soybean fields”
Claim · model-written summary
Criconemoides ornatus was suppressed by cotton and soybean compared with corn and peanut.
- Taxon
- corn, cotton, peanut, and soybean
Gossypium hirsutum
Arachis hypogaea
Glycine maxZea mays subsp. mayse1
- Treatment
- cotton and soybeane0
- Interactor
- Criconemoides ornatusMesocriconema ornatume0pest
- Outcome
- Criconemoides ornatuse0
- Direction
- suppressede0
- Comparator
- corn and peanute0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.



Verbatim
e0“Criconemoides ornatus increased rapidly on corn and peanut, but was suppressed by cotton and soybean”
e1“nematode species common in corn, cotton, peanut, and soybean fields”
Claim · model-written summary
Helicotylenchus dihystera was more numerous on cotton and soybean than on corn and peanut.
- Taxon
- corn, cotton, peanut, and soybean
Gossypium hirsutum
Arachis hypogaea
Glycine maxZea mays subsp. mayse1
- Treatment
- cotton and soybeane0
- Interactor
- Helicotylenchus dihystera
Helicotylenchus dihysterae0pest - Outcome
- Helicotylenchus dihysterae0
- Direction
- more numerouse0
- Comparator
- corn and peanute0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.



Verbatim
e0“Helicotylenchus dihystera was more numerous on cotton and soybean than on corn and peanut”
e1“nematode species common in corn, cotton, peanut, and soybean fields”
Claim · model-written summary
Xiphinema americanum numbers remained low on all crops.
- Taxon
- corn, cotton, peanut, and soybean
Gossypium hirsutum
Arachis hypogaea
Glycine maxZea mays subsp. mayse1
- Interactor
- Xiphinema americanumXiphinema americanume0pest
- Outcome
- Numbers of Xiphinema americanume0
- Direction
- remained lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.



Verbatim
e0“Numbers of Xiphinema americanum remained low on all crops”
e1“nematode species common in corn, cotton, peanut, and soybean fields”
Claim · model-written summary
The peanut sequence was the most effective monocrop system for suppressing most nematode species.
- Taxon
- peanut
Arachis hypogaeae0 - Treatment
- peanut sequencee0
- Outcome
- suppressing most nematode speciese0
- Direction
- most effectivee0
- Comparator
- monocrop systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The peanut sequence was the most effective monocrop system for suppressing most nematode species”
Claim · model-written summary
Multi-crop systems were equally effective in suppressing nematode densities.
- Taxon
- corn, cotton, peanut, and soybean
Gossypium hirsutum
Arachis hypogaea
Glycine maxZea mays subsp. mayse1
- Treatment
- Multi-crop systemse0
- Outcome
- suppressing nematode densitiese0
- Direction
- equally effectivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.



Verbatim
e0“Multi-crop systems, corn-peanut-cotton-soybean and cotton-soybean-corn-peanut, were equally effective in suppressing nematode densities”
e1“nematode species common in corn, cotton, peanut, and soybean fields”
The same questions in other papers
Zea mays subsp. mays · Meloidogyne incognita · Arachis hypogaea (peanut)Positive and negative results
1 in the opposite direction
- positive
Zea mays subsp. mays · organism · Arachis hypogaea (peanut)Positive and negative results
1 in the opposite direction
- positive
Gossypium hirsutum · organism · Zea mays (maize)Positive and negative results
1 in the opposite direction
- positive
Arachis hypogaea · organism · Glycine max (soybean)Positive and negative results
1 in the opposite direction
- negative
Gossypium hirsutum · organism · Glycine max (soybean)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
Zea mays subsp. mays · organism · Glycine max (soybean)Positive and negative results
5 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
5 papers more in this group
See all 9 papers →Glycine max · organism · Zea mays (maize)Positive and negative results
9 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
8 papers more in this group
See all 12 papers →Zea mays subsp. mays · organism · Zea mays (maize)Positive and negative results
11 papers in the same direction as this paper · 13 in the opposite direction
- positive
- positive
- positive
21 papers more in this group
See all 25 papers →8 of 13 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.