Abstract
Pratylenchus thornei reaches high population densities in non-irrigated annual cropping systems in low-rainfall regions of the Pacific Northwest. Two spring wheat varieties with different levels of tolerance and susceptibility to P. thornei were treated or not treated with aldicarb in three experiments. Grain yield was inversely correlated (P < 0.05) with pre-plant populations of P. thornei in soil and with P. thornei density in mature roots. As population of P. thornei increased, yield of the moderately tolerant/moderately susceptible variety Krichauff was generally more stable than for the intolerant/susceptible variety Machete. The reproductive factor (Pf/Pi) was generally lower (P < 0.05) for Krichauff than Machete. Aldicarb improved wheat yield (P < 0.05) in highly infested fields by an average of 67% for Krichauff and 113% for Machete. Aldicarb increased (P < 0.05) numbers of headed tillers, plant height, and grain test weight and kernel weight, and reduced (P < 0.05) the density of P. thornei in mature wheat roots, variability in height of heads, and leaf canopy temperature. Aldicarb did not improve yield in a soil with a low population of P. thornei. This is the first report that P. thornei causes economic damage to wheat in the Pacific Northwest.
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Claims 10
Claim · model-written summary
Wheat grain yield declined as pre-plant P. thornei soil populations rose.
- Taxon
- Wheat
Triticum aestivumt0 - Interactor
- P. thorneiPratylenchus thorneie0pathogen
- Outcome
- Grain yielde0
- Direction
- inversely correlatede0
- Setting
- soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield was inversely correlated (P < 0.05) with pre-plant populations of P. thornei in soil”
t0“Reduced Wheat Yield”
Claim · model-written summary
Wheat grain yield declined as P. thornei density in mature roots rose.
- Taxon
- WheatTriticum aestivumt0
- Organ / stage
- mature rootse0
- Interactor
- P. thorneiPratylenchus thorneie0pathogen
- Outcome
- Grain yielde0
- Direction
- inversely correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield was inversely correlated (P < 0.05) with pre-plant populations of P. thornei in soil and with P. thornei density in mature roots”
t0“Reduced Wheat Yield”
Claim · model-written summary
Krichauff yield was generally more stable than Machete yield as P. thornei populations increased.
- Taxon
- WheatTriticum aestivumt0
- Material
- Krichauffe0
- Interactor
- P. thorneiPratylenchus thorneie0pathogen
- Outcome
- yielde0
- Direction
- more stablee0
- Comparator
- Machetee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As population of P. thornei increased, yield of the moderately tolerant/moderately susceptible variety Krichauff was generally more stable than for the intolerant/susceptible variety Machete”
t0“Reduced Wheat Yield”
Claim · model-written summary
The P. thornei reproductive factor was generally lower on Krichauff than Machete.
- Taxon
- WheatTriticum aestivumt0
- Material
- Krichauffe0
- Interactor
- P. thorneiPratylenchus thorneie1pathogen
- Outcome
- reproductive factor (Pf/Pi)e0
- Direction
- lowere0
- Comparator
- Machetee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The reproductive factor (Pf/Pi) was generally lower (P < 0.05) for Krichauff than Machete”
t0“Reduced Wheat Yield”
e1“populations of P. thornei in soil”
Claim · model-written summary
Aldicarb raised Krichauff wheat yield by an average 67% in highly infested fields.
- Taxon
- WheatTriticum aestivumt0
- Material
- Krichauffe0
- Treatment
- Aldicarbe0
- Outcome
- yielde0
- Direction
- improvede0
- Value
- 67%e0
- Setting
- highly infested fieldse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aldicarb improved wheat yield (P < 0.05) in highly infested fields by an average of 67% for Krichauff”
t0“Reduced Wheat Yield”
Claim · model-written summary
Aldicarb raised Machete wheat yield by an average 113% in highly infested fields.
- Taxon
- WheatTriticum aestivumt0
- Material
- Machetee0
- Treatment
- Aldicarbe0
- Outcome
- yielde0
- Direction
- improvede0
- Value
- 113%e0
- Setting
- highly infested fieldse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aldicarb improved wheat yield (P < 0.05) in highly infested fields by an average of 67% for Krichauff and 113% for Machete”
t0“Reduced Wheat Yield”
Claim · model-written summary
Aldicarb increased headed tillers, plant height, and grain test weight.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- Aldicarbe0
- Outcome
- numbers of headed tillers, plant height, and grain test weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aldicarb increased (P < 0.05) numbers of headed tillers, plant height, and grain test weight and kernel weight”
t0“Reduced Wheat Yield”
Claim · model-written summary
Aldicarb increased kernel weight.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- Aldicarbe0
- Outcome
- kernel weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aldicarb increased (P < 0.05) numbers of headed tillers, plant height, and grain test weight and kernel weight”
t0“Reduced Wheat Yield”
Claim · model-written summary
Aldicarb reduced P. thornei density in mature wheat roots, variation in head height, and canopy temperature.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- Aldicarbe1
- Interactor
- P. thorneiPratylenchus thorneie0pathogen
- Outcome
- density of P. thornei in mature wheat roots, variability in height of heads, and leaf canopy temperaturee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced (P < 0.05) the density of P. thornei in mature wheat roots, variability in height of heads, and leaf canopy temperature”
e1“Aldicarb increased (P < 0.05)”
t0“Reduced Wheat Yield”
Claim · model-written summary
Aldicarb did not improve wheat yield in soil with a low P. thornei population.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- Aldicarbe0
- Interactor
- P. thorneiPratylenchus thorneie0pathogen
- Outcome
- yielde0
- Direction
- did not improvee0
- Qualifier
- low population of P. thorneie0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aldicarb did not improve yield in a soil with a low population of P. thornei”
t0“Reduced Wheat Yield”
The same questions in other papers
aldicarb · yield · Triticum aestivum (wheat)Positive and negative results
9 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
7 papers more in this group
See all 11 papers →aldicarb · quality: grain · Triticum aestivum (wheat)Results agree
1 paper in the same direction as this paper
- positive
aldicarb · Pratylenchus thornei · Triticum aestivum (wheat)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.