Abstract
The shoot bug Peregrinus maidis (Ashmead) (Hemiptera: Delphacide) has emerged as a major sucking pest of sorghum. It is important to understand its alternate hosts on which this pest survives during off season. Hence, its development and oviposition was studied over various grass family members along with sorghum (as check) under laboratory conditions. Results showed that, total nymphal duration (recorded in days) on itch grass was 16.54 followed by napier grass (17.45), maize (19.53), bajra (20.88), para grass (22.00), panola grass (24.88). Oviposition studies (recorded in eggs/ female) showed that it was maximum with itch grass (32.00) which was next best to sorghum (42.33) followed by napier grass (28.00), maize (23.00), bajra (16.00), para grass (9.00), panola grass (8.00), nut grass (8,00) and wild bajra (6.00). The importance of elimination of alternate hosts during off-season to overcome the pest survival is thus evident.
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Claims 16
Claim · model-written summary
Nymphal duration on itch grass was 16.54 days.
- Taxon
- itch grasse0
- Interactor
- Peregrinus maidis
Peregrinus maidist0pest - Outcome
- nymphal duratione0
- Value
- 16.54e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total nymphal duration (recorded in days) on itch grass was 16.54”
t0“Peregrinus maidis”
e1“total nymphal duration (recorded in days)”
Claim · model-written summary
Nymphal duration on napier grass was 17.45 days.
- Taxon
- napier grass
.jpg?width=60)
Cenchrus purpureuse0 - Outcome
- nymphal duratione1
- Value
- 17.45e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“napier grass (17.45)”
t0“Peregrinus maidis”
e1“total nymphal duration (recorded in days)”
Claim · model-written summary
Nymphal duration on maize was 19.53 days.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (19.53)”
t0“Peregrinus maidis”
e1“total nymphal duration (recorded in days)”
Claim · model-written summary
Nymphal duration on bajra was 20.88 days.
Verbatim
e0“bajra (20.88)”
t0“Peregrinus maidis”
e1“total nymphal duration (recorded in days)”
Claim · model-written summary
Nymphal duration on para grass was 22.00 days.
- Taxon
- para grass
Urochloa muticae0 - Outcome
- nymphal duratione1
- Value
- 22.00e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“para grass (22.00)”
t0“Peregrinus maidis”
e1“total nymphal duration (recorded in days)”
Claim · model-written summary
Nymphal duration on panola grass was 24.88 days.
Verbatim
e0“panola grass (24.88)”
t0“Peregrinus maidis”
e1“total nymphal duration (recorded in days)”
Claim · model-written summary
Oviposition on sorghum was 42.33 eggs per female.
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sorghum (42.33)”
t0“Peregrinus maidis”
e1“Oviposition studies (recorded in eggs/ female)”
Claim · model-written summary
Oviposition on itch grass was 32.00 eggs per female.
Verbatim
e0“itch grass (32.00)”
t0“Peregrinus maidis”
e1“Oviposition studies (recorded in eggs/ female)”
Claim · model-written summary
Oviposition on napier grass was 28.00 eggs per female.
- Taxon
- napier grassCenchrus purpureuse0
- Outcome
- Ovipositione1
- Value
- 28.00e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“napier grass (28.00)”
t0“Peregrinus maidis”
e1“Oviposition studies (recorded in eggs/ female)”
Claim · model-written summary
Oviposition on maize was 23.00 eggs per female.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (23.00)”
t0“Peregrinus maidis”
e1“Oviposition studies (recorded in eggs/ female)”
Claim · model-written summary
Oviposition on bajra was 16.00 eggs per female.
Verbatim
e0“bajra (16.00)”
t0“Peregrinus maidis”
e1“Oviposition studies (recorded in eggs/ female)”
Claim · model-written summary
Oviposition on para grass was 9.00 eggs per female.
- Taxon
- para grassUrochloa muticae0
- Outcome
- Ovipositione1
- Value
- 9.00e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“para grass (9.00)”
t0“Peregrinus maidis”
e1“Oviposition studies (recorded in eggs/ female)”
Claim · model-written summary
Oviposition on panola grass was 8.00 eggs per female.
Verbatim
e0“panola grass (8.00)”
t0“Peregrinus maidis”
e1“Oviposition studies (recorded in eggs/ female)”
Claim · model-written summary
Oviposition on nut grass was 8,00 eggs per female.
Verbatim
e0“nut grass (8,00)”
t0“Peregrinus maidis”
e1“Oviposition studies (recorded in eggs/ female)”
Claim · model-written summary
Oviposition on wild bajra was 6.00 eggs per female.
Verbatim
e0“wild bajra (6.00)”
t0“Peregrinus maidis”
e1“Oviposition studies (recorded in eggs/ female)”
Claim · model-written summary
The authors recommend eliminating alternate hosts during the off season to limit pest survival.
Verbatim
e0“The importance of elimination of alternate hosts during off-season to overcome the pest survival is thus evident.”
t0“Peregrinus maidis”
e1“Oviposition studies (recorded in eggs/ female)”