Abstract
Abstract Sugar beet root maggot (SBRM; Tetanops myopaeformis ) is a major insect pest of sugar beet throughout much of North America. Two insecticides with the same mode of action are used almost exclusively for SBRM control. Alternative control strategies would be required if insecticide‐resistant SBRM developed or the insecticides were no longer available due to regulatory actions. Germplasm lines with SBRM resistance are available, but information on the SBRM resistance of hybrid cultivars created by crossing these lines with a SBRM‐susceptible cms parental line is lacking. This study compared the performance of four hybrids with SBRM‐resistant pollinators to two susceptible hybrids, with and without insecticide, in four environments. In all environments, the hybrids with the SBRM‐resistant pollinators and no insecticide had root yields equal to the SBRM‐susceptible commercial hybrid with insecticide. In two environments, the root yields of the SBRM‐susceptible hybrids were low and the difference between the root yields with and without insecticide was relatively small, indicating the insecticide was ineffective. In contrast, the root yields of the SBRM‐resistant hybrids, with or without insecticide, in these trials were substantially higher than the susceptible hybrids and similar to corresponding root yields at the other sites. Based upon these trials, it appears that hybrids produced with the currently available resistance sources would have sufficient SBRM resistance to prevent catastrophic yield reductions due to SBRM feeding, could reduce uncertainty caused by fluctuations in insecticide effectiveness, would provide protection against the development of insecticide‐resistant SBRM strains, and also provide a useful level of SBRM protection, if the current insecticides were no longer available.
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Claims 3
Claim · model-written summary
Resistant-pollinator hybrids without insecticide had equal root yields to a treated susceptible commercial hybrid.
- Taxon
- sugar beet
Beta vulgaris subsp. vulgarist0 - Material
- hybrids with the SBRM‐resistant pollinatorse0
- Treatment
- no insecticidee0
- Outcome
- root yieldse0
- Direction
- equale0
- Comparator
- SBRM‐susceptible commercial hybrid with insecticidee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In all environments, the hybrids with the SBRM‐resistant pollinators and no insecticide had root yields equal to the SBRM‐susceptible commercial hybrid with insecticide.”
t0“Performance of sugar beet hybrids”
Claim · model-written summary
In two environments, insecticide had a relatively small root yield difference in susceptible hybrids.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Material
- SBRM‐susceptible hybridse0
- Treatment
- insecticidee0
- Outcome
- root yieldse0
- Direction
- relatively smalle0
- Comparator
- without insecticidee0
- Setting
- two environmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In two environments, the root yields of the SBRM‐susceptible hybrids were low and the difference between the root yields with and without insecticide was relatively small, indicating the insecticide was ineffective.”
t0“Performance of sugar beet hybrids”
Claim · model-written summary
Resistant hybrids had substantially higher root yields than susceptible hybrids in these trials.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Material
- SBRM‐resistant hybridse0
- Treatment
- with or without insecticidee0
- Outcome
- root yieldse0
- Direction
- substantially highere0
- Comparator
- susceptible hybridse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In contrast, the root yields of the SBRM‐resistant hybrids, with or without insecticide, in these trials were substantially higher than the susceptible hybrids and similar to corresponding root yields at the other sites.”
t0“Performance of sugar beet hybrids”
The same questions in other papers
insecticide · yield · Beta vulgaris (beet)Positive and negative results
4 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- positive
9 papers more in this group
See all 13 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.