Abstract
The interaction of the root lesion nematode Pratylenchus penetrans and the fungal plant pathogen Verticillium dahliae causes potato early die (PED) complex, which induces premature vine senescence and dramatically reduces yield in potatoes. Management of PED is often achieved through the use of soil fumigants and nematicides, but their adverse effects on soil, human and environmental health, and strict regulations worldwide require alternative control tactics. In this study, we investigated the effects of multiple composts and manures on nematode mortality and PED. In lab assays, root lesion nematodes were exposed to poultry manure, layer ash blend, Dairy Doo, or wood ash for 7 days at rates of 0, 0.1, 1, 10, and 20% by volume of product and assessed for nematode survivorship. Additionally, these products were evaluated for volatile fatty acid content to determine if fatty acid content affects nematode control. In a field trial, the composts and manures were evaluated at two different rates, high (11.2 t/ha) or low (2.8 t/ha), and populations of P. penetrans and V. dahliae were quantified. Our results show that a 1% application rate of poultry manure and layer ash blend provided the greatest nematode control in lab assays with 24.5 and 38.2% reduction, respectively, with greater control at higher rates. In the field, plots treated with poultry manure had significantly higher potato yields and significantly fewer nematodes than control plots. Taken together, our results suggest that poultry manure could be a promising amendment to control PED.
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Claims 6
Claim · model-written summary
A 1% poultry manure application reduced nematodes by 24.5% in the lab.
- Taxon
- Potatoes
Solanum tuberosumt0 - Treatment
- 1% application rate of poultry manuree0
- Outcome
- nematode controle0
- Direction
- reductione0
- Value
- 24.5e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a 1% application rate of poultry manure and layer ash blend provided the greatest nematode control in lab assays with 24.5 and 38.2% reduction, respectively”
t0“Potatoes”
Claim · model-written summary
A 1% layer ash blend application reduced nematodes by 38.2% in the lab.
- Taxon
- PotatoesSolanum tuberosumt0
- Treatment
- 1% application rate of poultry manure and layer ash blende0
- Outcome
- nematode controle0
- Direction
- reductione0
- Value
- 38.2%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a 1% application rate of poultry manure and layer ash blend provided the greatest nematode control in lab assays with 24.5 and 38.2% reduction, respectively”
t0“Potatoes”
Claim · model-written summary
Higher application rates gave greater nematode control.
- Taxon
- PotatoesSolanum tuberosumt0
- Treatment
- higher ratese0
- Outcome
- controle0
- Direction
- greatere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with greater control at higher rates”
e1“greatest nematode control in lab assays”
t0“Potatoes”
Claim · model-written summary
Field poultry manure increased potato yield significantly versus controls.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- poultry manuree0
- Outcome
- potato yieldse0
- Direction
- highere0
- Comparator
- control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plots treated with poultry manure had significantly higher potato yields and significantly fewer nematodes than control plots”
Claim · model-written summary
Field poultry manure significantly reduced nematodes versus controls.
- Taxon
- PotatoesSolanum tuberosumt0
- Treatment
- poultry manuree0
- Outcome
- nematodese0
- Direction
- fewere0
- Comparator
- control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plots treated with poultry manure had significantly higher potato yields and significantly fewer nematodes than control plots”
t0“Potatoes”
Claim · model-written summary
The authors propose poultry manure as a promising PED amendment.
- Taxon
- PotatoesSolanum tuberosumt0
- Interactor
- Pratylenchus penetrans
Pratylenchus penetranse1pest - Second interactor
- Verticillium dahliae
Verticillium dahliaee1pathogen - Outcome
- poultry manure could be a promising amendment to control PEDe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“poultry manure could be a promising amendment to control PED”
e1“Pratylenchus penetrans and the fungal plant pathogen Verticillium dahliae”
t0“Potatoes”
The same questions in other papers
fertilization · yield · Solanum tuberosum (potato)Positive and negative results
393 papers in the same direction as this paper · 48 in the opposite direction · 8 reporting no difference from an alternative
- positive
- positive
- positive
446 papers more in this group
See all 450 papers →fertilization · Nematoda · Solanum tuberosum (potato)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.