Abstract
The lucerne leaf beetle, Gonioctena fornicata (Brggemann, 1873) (Coleoptera: Chrysomelidae), is an important pest of lucerne in Europe and several parts of Turkey. Its damage and thus the loss of yield due to this pest insect is unknown. This study was conducted at ukurova University, Faculty of Agriculture Research and Application Farm in Adana Province, Turkey in 2017 and 2018. It was found that the pest had one generation per year. Especially the larvae of G. fornicata was found to feed extensively on the leaves, shoots, flowers and seeds of lucerne, almost turning them into leafless. In the untreated plots, there was about 148% loss in both fresh weight and dry weight in 2017 caused by this pest species and up to 27% loss in 2018. Gonioctena fornicata negatively affected the fresh and dry weight yields. It is estimated that the yield losses were 3.48 t/ha. Although the yield difference between the treated and untreated plots was lower than expected, the cost of loss of yield was still high. Economic loss in the untreated plot was about 4250 TRY/ha (about 545 USD/ha as of December 2020).
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Claims 9
Claim · model-written summary
Gonioctena fornicata had one generation per year on lucerne in the study.
- Taxon
- lucerne
Medicago sativae0 - Interactor
- Gonioctena fornicata
Gonioctena fornicatat0pest - Outcome
- one generation per yeare1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“is an important pest of lucerne in Europe and several parts of Turkey”
e1“It was found that the pest had one generation per year”
t0“Gonioctena fornicata”
Claim · model-written summary
Larvae of G. fornicata fed extensively on the leaves, shoots, flowers and seeds of lucerne.
- Taxon
- lucerneMedicago sativae2
- Organ / stage
- leaves, shoots, flowers and seedse2
- Interactor
- G. fornicataGonioctena fornicatae2pest
- Outcome
- feed extensively on the leaves, shoots, flowers and seedse2
- Qualifier
- larvaee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“is an important pest of lucerne in Europe and several parts of Turkey”
e2“the larvae of G. fornicata was found to feed extensively on the leaves, shoots, flowers and seeds of lucerne”
Claim · model-written summary
In untreated plots, G. fornicata caused about 148% loss in fresh and dry weight of lucerne in 2017.
- Taxon
- lucerneMedicago sativae0
- Interactor
- Gonioctena fornicataGonioctena fornicatat0pest
- Outcome
- fresh weight and dry weighte3
- Value
- 148%e3
- Qualifier
- in 2017e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“is an important pest of lucerne in Europe and several parts of Turkey”
e3“In the untreated plots, there was about 148% loss in both fresh weight and dry weight in 2017 caused by this pest species”
t0“Gonioctena fornicata”
Claim · model-written summary
In 2018, G. fornicata caused up to 27% loss on lucerne in untreated plots.
- Taxon
- lucerneMedicago sativae0
- Interactor
- Gonioctena fornicataGonioctena fornicatat0pest
- Outcome
- losse4
- Value
- up to 27%e4
- Qualifier
- in 2018e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“is an important pest of lucerne in Europe and several parts of Turkey”
e4“up to 27% loss in 2018”
t0“Gonioctena fornicata”
Claim · model-written summary
G. fornicata negatively affected the fresh and dry weight yields of lucerne.
- Taxon
- lucerneMedicago sativae0
- Interactor
- Gonioctena fornicataGonioctena fornicatae5pest
- Outcome
- fresh and dry weight yieldse5
- Direction
- decreaseinferrede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“is an important pest of lucerne in Europe and several parts of Turkey”
e5“Gonioctena fornicata negatively affected the fresh and dry weight yields”
Claim · model-written summary
The yield losses caused by the pest on lucerne were estimated at 3.48 t/ha.
- Taxon
- lucerneMedicago sativae0
- Interactor
- Gonioctena fornicataGonioctena fornicatat0pest
- Outcome
- yield lossese6
- Value
- 3.48 t/hae6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“is an important pest of lucerne in Europe and several parts of Turkey”
e6“It is estimated that the yield losses were 3.48 t/ha”
t0“Gonioctena fornicata”
Claim · model-written summary
The yield difference between treated and untreated lucerne plots was lower than expected.
- Taxon
- lucerneMedicago sativae0
- Treatment
- treatede7
- Outcome
- yield differencee7
- Direction
- lowere7
- Comparator
- untreated plotse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“is an important pest of lucerne in Europe and several parts of Turkey”
e7“the yield difference between the treated and untreated plots was lower than expected”
Claim · model-written summary
Economic loss in the untreated lucerne plot was about 4250 TRY/ha.
- Taxon
- lucerneMedicago sativae0
- Outcome
- Economic losse6
- Value
- 4250 TRY/hae6
- Qualifier
- about 545 USD/ha as of December 2020e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“is an important pest of lucerne in Europe and several parts of Turkey”
e6“Economic loss in the untreated plot was about 4250 TRY/ha (about 545 USD/ha as of December 2020)”
Claim · model-written summary
The cost of yield loss on lucerne was still high.
- Taxon
- lucerneMedicago sativae0
- Outcome
- cost of loss of yielde7
- Qualifier
- still highe7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“is an important pest of lucerne in Europe and several parts of Turkey”
e7“the cost of loss of yield was still high”