Abstract
A series of greenhouse experiments was conducted to elucidate the postinfection development of Heterodera glycines in response to applications of alachlor and fenamiphos. The rate of H. glycines maturation on a susceptible soybean cultivar was not altered by 1.0 mug alachlor/g soil but was completely inhibited by 1.0 or 1.5 mug fenamiphos/g soil. An alachlor-fenamiphos combination allowed development after an initial 300-degree-day delay. Nematode maturation on the resistant soybean cultivar Centennial with 1.0 mug alachlor/g soil was similar to that observed on an untreated resistant control. Twice as many females matured on Centennial plants growing in alachlor-treated soil as on untreated Centennial plants. Fenamiphos in combination with alachlor (1.0 mug a.i./g soil) allowed development on Centennial at half the rate of the resistant control. This antagonism between alachlor and fenamiphos on development may help to explain late season population resurgence of H. glycines observed with field application of these pesticides.
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Claims 7
Claim · model-written summary
Alachlor did not alter H. glycines maturation on susceptible soybean.
- Taxon
- soybean
Glycine maxe0 - Material
- susceptible soybean cultivare0
- Treatment
- 1.0 mug alachlor/g soile0
- Interactor
- H. glycines
Heterodera glycinese0pathogen - Outcome
- H. glycines maturatione0
- Direction
- not alterede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rate of H. glycines maturation on a susceptible soybean cultivar was not altered by 1.0 mug alachlor/g soil but was completely inhibited by 1.0 or 1.5 mug fenamiphos/g soil.”
Claim · model-written summary
Fenamiphos at 1.0 or 1.5 mug/g soil completely inhibited H. glycines maturation on susceptible soybean.
- Taxon
- soybeanGlycine maxe0
- Material
- susceptible soybean cultivare0
- Treatment
- 1.0 or 1.5 mug fenamiphos/g soile0
- Interactor
- H. glycinesHeterodera glycinese0pathogen
- Outcome
- H. glycines maturatione0
- Direction
- completely inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rate of H. glycines maturation on a susceptible soybean cultivar was not altered by 1.0 mug alachlor/g soil but was completely inhibited by 1.0 or 1.5 mug fenamiphos/g soil.”
Claim · model-written summary
Combined alachlor and fenamiphos allowed nematode development after a 300-degree-day delay.
- Taxon
- soybeanGlycine maxe1
- Treatment
- alachlor-fenamiphos combinatione0
- Interactor
- Heterodera glycinesHeterodera glycinest0pathogen
- Outcome
- developmente0
- Value
- 300-degree-daye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An alachlor-fenamiphos combination allowed development after an initial 300-degree-day delay.”
t0“Heterodera glycines”
e1“a susceptible soybean cultivar”
Claim · model-written summary
Alachlor did not alter nematode maturation rate on resistant soybean Centennial.
- Taxon
- soybeanGlycine maxe0
- Material
- Centenniale0
- Treatment
- 1.0 mug alachlor/g soile0
- Interactor
- Heterodera glycinesHeterodera glycinest0pathogen
- Outcome
- Nematode maturatione0
- Direction
- similar toe0
- Comparator
- untreated resistant controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nematode maturation on the resistant soybean cultivar Centennial with 1.0 mug alachlor/g soil was similar to that observed on an untreated resistant control.”
t0“Heterodera glycines”
e1“a susceptible soybean cultivar”
Claim · model-written summary
Twice as many H. glycines females matured on alachlor-treated Centennial plants as on untreated Centennial.
- Taxon
- soybeanGlycine maxe1
- Material
- Centenniale0
- Treatment
- alachlor-treated soile0
- Interactor
- Heterodera glycinesHeterodera glycinest0pathogen
- Outcome
- females maturede0
- Direction
- Twice as manye0
- Value
- Twice as manye0
- Comparator
- untreated Centennial plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Twice as many females matured on Centennial plants growing in alachlor-treated soil as on untreated Centennial plants.”
t0“Heterodera glycines”
e1“a susceptible soybean cultivar”
Claim · model-written summary
Fenamiphos combined with alachlor allowed H. glycines development on Centennial at half the resistant control rate.
- Taxon
- soybeanGlycine maxe1
- Material
- Centenniale0
- Treatment
- Fenamiphos in combination with alachlor (1.0 mug a.i./g soil)e0
- Interactor
- Heterodera glycinesHeterodera glycinest0pathogen
- Outcome
- developmente0
- Direction
- half the ratee0
- Value
- half the ratee0
- Comparator
- resistant controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fenamiphos in combination with alachlor (1.0 mug a.i./g soil) allowed development on Centennial at half the rate of the resistant control.”
t0“Heterodera glycines”
e1“a susceptible soybean cultivar”
Claim · model-written summary
The authors suggest alachlor–fenamiphos antagonism may explain late-season H. glycines resurgence in the field.
- Taxon
- soybeanGlycine maxe1
- Treatment
- alachlor and fenamiphose0
- Interactor
- H. glycinesHeterodera glycinese0pathogen
- Outcome
- late season population resurgence of H. glycinese0
- Qualifier
- antagonisme0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This antagonism between alachlor and fenamiphos on development may help to explain late season population resurgence of H. glycines observed with field application of these pesticides.”
t0“Heterodera glycines”
e1“a susceptible soybean cultivar”
The same questions in other papers
alachlor · Heterodera glycines · Glycine max (soybean)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- positive
- negative
- positive
1 paper more in this group
See all 5 papers →fenamiphos · Heterodera glycines · Glycine max (soybean)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.