Abstract
The field experiment was conducted in the rice field of Regional Agricultural Research Station, Assam Agricultural University, Titabar, Assam in randomized block design sowing the seeds in three dates at an interval of twenty days between each sowing, viz., early (15th May), normal (5th June) and late (25th June) separately. Early sown was the least damaged crop ( 9.6% dead heart (DH) and 10.3% white ear head (WEH) as compared to normal (15.5 % DH and 16.7% WEH) and late (24.6% DH and 25.3% WEH) with a yield of 5.3t/ha in early, 4.5 t/ha in normal and 2.4t/ha in late sown crops. Spider population was significantly higher in early than that of normal and late planting, whereas the population of coccinellid beetles and the egg parasitoid, Trichogramma japonicum were non-significantly higher in early than that of normal sown crop, but the population of these natural enemies were significantly lower in late sown rice. The stem borer infestation was significantly higher in late sown crop with increased maximum temperature, morning humidity having a significant positive effect in all the dates of planting. There were a non- significant positive effect on population with minimum temperature (r = 0.34 for DH and r = 0.22 for WEH) and average rainfall (r = 0.20 for DH and r = 0.07 for WEH) at early sown. Maximum temperature and morning relative humidity had a significant positive effect on borer infestation as dead heart and white ear head in connection with a significant positive effect of spider population in three dates of planting. The variation in the planting times work as a means of cultural control by creating asynchrony between crop and insect pests’ phenology along with crop-weather-pest interaction help in developing forewarning system to warn the farmers in advance to avoid manageable yield loss by stem borer incidences.
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Claims 12
Claim · model-written summary
Early sowing (15th May) had the least dead heart damage (9.6%) compared with normal and late sowing.
- Taxon
- rice
Oryza sativae0 - Treatment
- early (15th May)e1
- Outcome
- dead hearte2
- Direction
- least damagede2
- Value
- 9.6%e2
- Comparator
- normal (5th June) and late (25th June)e1
- Setting
- Titabar, Assame0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The field experiment was conducted in the rice field of Regional Agricultural Research Station, Assam Agricultural University, Titabar, Assam”
e1“sowing the seeds in three dates at an interval of twenty days between each sowing, viz., early (15th May), normal (5th June) and late (25th June) separately”
e2“Early sown was the least damaged crop ( 9.6% dead heart (DH) and 10.3% white ear head (WEH) as compared to normal (15.5 % DH and 16.7% WEH) and late (24.6% DH and 25.3% WEH)”
Claim · model-written summary
Early sowing had the least white ear head damage (10.3%) compared with normal and late sowing.
- Taxon
- riceOryza sativae0
- Treatment
- early (15th May)e1
- Outcome
- white ear heade2
- Direction
- least damagede2
- Value
- 10.3%e2
- Comparator
- normal (5th June) and late (25th June)e1
- Setting
- Titabar, Assame0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The field experiment was conducted in the rice field of Regional Agricultural Research Station, Assam Agricultural University, Titabar, Assam”
e1“sowing the seeds in three dates at an interval of twenty days between each sowing, viz., early (15th May), normal (5th June) and late (25th June) separately”
e2“Early sown was the least damaged crop ( 9.6% dead heart (DH) and 10.3% white ear head (WEH) as compared to normal (15.5 % DH and 16.7% WEH) and late (24.6% DH and 25.3% WEH)”
Claim · model-written summary
Early sown rice had a higher yield (5.3 t/ha) than normal (4.5 t/ha) and late (2.4 t/ha) sown rice.
- Taxon
- riceOryza sativae0
- Treatment
- early (15th May)e1
- Outcome
- yielde3
- Direction
- higherinferrede3
- Value
- 5.3t/hae3
- Comparator
- normal (5th June) and late (25th June)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The field experiment was conducted in the rice field of Regional Agricultural Research Station, Assam Agricultural University, Titabar, Assam”
e1“sowing the seeds in three dates at an interval of twenty days between each sowing, viz., early (15th May), normal (5th June) and late (25th June) separately”
e3“with a yield of 5.3t/ha in early, 4.5 t/ha in normal and 2.4t/ha in late sown crops”
Claim · model-written summary
Spider population was significantly higher in early sown rice than in normal and late planting.
- Taxon
- riceOryza sativae0
- Treatment
- earlye4
- Interactor
- Spidere4biocontrol_agent
- Outcome
- Spider populatione4
- Direction
- highere4
- Comparator
- normal and late plantinge4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The field experiment was conducted in the rice field of Regional Agricultural Research Station, Assam Agricultural University, Titabar, Assam”
e4“Spider population was significantly higher in early than that of normal and late planting”
Claim · model-written summary
Coccinellid beetle population was non-significantly higher in early than in normal sown rice.
- Taxon
- riceOryza sativae0
- Treatment
- earlye5
- Interactor
- coccinellid beetlese5biocontrol_agent
- Outcome
- populatione5
- Direction
- highere5
- Comparator
- normal sown crope5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The field experiment was conducted in the rice field of Regional Agricultural Research Station, Assam Agricultural University, Titabar, Assam”
e5“the population of coccinellid beetles and the egg parasitoid, Trichogramma japonicum were non-significantly higher in early than that of normal sown crop”
Claim · model-written summary
Trichogramma japonicum population was non-significantly higher in early than in normal sown rice.
- Taxon
- riceOryza sativae0
- Treatment
- earlye5
- Interactor
- Trichogramma japonicumTrichogramma japonicume5biocontrol_agent
- Outcome
- populatione5
- Direction
- highere5
- Comparator
- normal sown crope5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The field experiment was conducted in the rice field of Regional Agricultural Research Station, Assam Agricultural University, Titabar, Assam”
e5“the population of coccinellid beetles and the egg parasitoid, Trichogramma japonicum were non-significantly higher in early than that of normal sown crop”
Claim · model-written summary
Coccinellid beetle and Trichogramma japonicum populations were significantly lower in late sown rice.
- Taxon
- riceOryza sativae0
- Treatment
- late sowne6
- Interactor
- coccinellid beetlese5biocontrol_agent
- Second interactor
- Trichogramma japonicumTrichogramma japonicume5biocontrol_agent
- Outcome
- populatione6
- Direction
- lowere6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The field experiment was conducted in the rice field of Regional Agricultural Research Station, Assam Agricultural University, Titabar, Assam”
e5“the population of coccinellid beetles and the egg parasitoid, Trichogramma japonicum were non-significantly higher in early than that of normal sown crop”
e6“but the population of these natural enemies were significantly lower in late sown rice”
Claim · model-written summary
Stem borer infestation was significantly higher in late sown rice.
- Taxon
- riceOryza sativae0
- Treatment
- late sown crope7
- Interactor
- stem borere7pest
- Outcome
- stem borer infestatione7
- Direction
- highere7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The field experiment was conducted in the rice field of Regional Agricultural Research Station, Assam Agricultural University, Titabar, Assam”
e7“The stem borer infestation was significantly higher in late sown crop with increased maximum temperature, morning humidity having a significant positive effect in all the dates of planting”
Claim · model-written summary
Maximum temperature and morning relative humidity had a significant positive effect on stem borer infestation (dead heart and white ear head) in rice.
- Taxon
- riceOryza sativae0
- Treatment
- Maximum temperature and morning relative humiditye7
- Outcome
- borer infestatione7
- Direction
- positivee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The field experiment was conducted in the rice field of Regional Agricultural Research Station, Assam Agricultural University, Titabar, Assam”
e7“Maximum temperature and morning relative humidity had a significant positive effect on borer infestation as dead heart and white ear head”
Claim · model-written summary
Minimum temperature had a non-significant positive association with borer population in early sown rice (r = 0.34 for dead heart).
- Taxon
- riceOryza sativae0
- Treatment
- minimum temperaturee6
- Outcome
- populatione6
- Direction
- positivee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The field experiment was conducted in the rice field of Regional Agricultural Research Station, Assam Agricultural University, Titabar, Assam”
e6“a non- significant positive effect on population with minimum temperature (r = 0.34 for DH and r = 0.22 for WEH)”
Claim · model-written summary
Average rainfall had a non-significant positive association with borer population in early sown rice (r = 0.20 for dead heart).
- Taxon
- riceOryza sativae0
- Treatment
- average rainfalle7
- Outcome
- populatione6
- Direction
- positivee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The field experiment was conducted in the rice field of Regional Agricultural Research Station, Assam Agricultural University, Titabar, Assam”
e6“a non- significant positive effect on population with minimum temperature (r = 0.34 for DH and r = 0.22 for WEH)”
e7“average rainfall (r = 0.20 for DH and r = 0.07 for WEH) at early sown”
Claim · model-written summary
Varying planting times can serve as a cultural control of rice insect pests by desynchronising crop and pest phenology.
- Taxon
- riceOryza sativae0
- Outcome
- cultural controle7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The field experiment was conducted in the rice field of Regional Agricultural Research Station, Assam Agricultural University, Titabar, Assam”
e7“The variation in the planting times work as a means of cultural control by creating asynchrony between crop and insect pests’ phenology”
The same questions in other papers
sowing time · pest · Oryza sativa (rice)Positive and negative results
2 papers in the same direction as this paper · 6 in the opposite direction
- positive
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See all 9 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.