Abstract
The effective durations of pesticide-induced susceptibility of rice to brown planthopper (BPH), Nilaparvata lugens (Stål) (Homoptera: Delphacidae), and physiological and biochemical changes in rice plants following pesticide applications, were studied. The effective duration of the herbicide butachlor on the susceptibility of rice variety Zhengdao 2 to BPH exceeded 16 days. The difference in damage rating between rice plants with pesticide treatments and control plants gradually decreased with days after treatment (DAT). There was a significant correlation between damage rating and DAT. The number of rice tillers at 3 – 10 DAT and plant heights at 7 – 10 DAT declined on Zhengdao 2 with the butachlor treatment. On the other hand, there were no effects of butachlor on damage rating, number of rice tillers and plant height for Xiushui 63. This might be related to tolerance of Xiushui 63 to butachlor. For Zhengdao 2, the fungicide jingganmycin and the insecticide bisultap had a significant influence on BPH damage, number of rice tillers and plant height. In contrast to butachlor, jingganmycin and bisultap had a significant effect on BPH damage to Xiushui 63. However, these two pesticides had no significant effect on the number of rice tillers and plant height of Xiushui 63. In general, the effective duration of butachlor on rice plants was greater than jingganmycin and bisultap. Oxalic acid content and photosynthesis in rice plants declined significantly after jingganmycin and bisultap treatments. These findings are consistent with those of pesticide-susceptibility of rice to BPH. Pesticide-induced susceptibility of rice resistance to BPH counteracts the role of varietal resistance in integrated pest management.
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Claims 14
Claim · model-written summary
The effective duration of butachlor-induced susceptibility of rice variety Zhengdao 2 to brown planthopper exceeded 16 days.
- Taxon
- rice
Oryza sativae0 - Material
- Zhengdao 2e0
- Treatment
- butachlore0
- Interactor
- BPHe0pest
- Outcome
- susceptibility of rice variety Zhengdao 2 to BPHe0
- Direction
- exceedede0
- Value
- 16 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effective duration of the herbicide butachlor on the susceptibility of rice variety Zhengdao 2 to BPH exceeded 16 days”
Claim · model-written summary
The difference in BPH damage rating between pesticide-treated and control rice plants gradually decreased with days after treatment.
- Taxon
- riceOryza sativae0
- Treatment
- pesticide treatmentse0
- Outcome
- damage ratinge0
- Direction
- decreasede0
- Qualifier
- days after treatmente0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The difference in damage rating between rice plants with pesticide treatments and control plants gradually decreased with days after treatment (DAT)”
Claim · model-written summary
There was a significant correlation between BPH damage rating of rice and days after pesticide treatment.
- Taxon
- riceOryza sativat0
- Treatment
- DATe0
- Interactor
- brown planthopper
Nilaparvata lugenst0pest - Outcome
- damage ratinge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a significant correlation between damage rating and DAT”
t0“susceptibility of rice to brown planthopper”
Claim · model-written summary
The number of rice tillers of Zhengdao 2 declined at 3-10 days after butachlor treatment.
- Taxon
- riceOryza sativae0
- Material
- Zhengdao 2e0
- Treatment
- butachlor treatmente0
- Outcome
- number of rice tillerse0
- Direction
- declinede0
- Qualifier
- at 3 – 10 DATe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of rice tillers at 3 – 10 DAT and plant heights at 7 – 10 DAT declined on Zhengdao 2 with the butachlor treatment”
Claim · model-written summary
Plant height of Zhengdao 2 declined at 7-10 days after butachlor treatment.
- Taxon
- riceOryza sativae0
- Material
- Zhengdao 2e0
- Treatment
- butachlor treatmente0
- Outcome
- plant heightse0
- Direction
- declinede0
- Qualifier
- at 7 – 10 DATe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of rice tillers at 3 – 10 DAT and plant heights at 7 – 10 DAT declined on Zhengdao 2 with the butachlor treatment”
Claim · model-written summary
Butachlor had no effect on BPH damage rating, tiller number or plant height of rice variety Xiushui 63.
- Taxon
- riceOryza sativae0
- Material
- Xiushui 63e0
- Treatment
- butachlore0
- Outcome
- damage rating, number of rice tillers and plant heighte0
- Direction
- no_changeinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there were no effects of butachlor on damage rating, number of rice tillers and plant height for Xiushui 63”
Claim · model-written summary
The fungicide jingganmycin treatment had a significant influence on BPH damage, tiller number and plant height of rice variety Zhengdao 2.
- Taxon
- riceOryza sativae0
- Material
- Zhengdao 2e0
- Treatment
- jingganmycine0
- Interactor
- BPHe0pest
- Outcome
- BPH damage, number of rice tillers and plant heighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For Zhengdao 2, the fungicide jingganmycin and the insecticide bisultap had a significant influence on BPH damage, number of rice tillers and plant height”
Claim · model-written summary
The insecticide bisultap treatment had a significant influence on BPH damage, tiller number and plant height of rice variety Zhengdao 2.
- Taxon
- riceOryza sativae0
- Material
- Zhengdao 2e0
- Treatment
- bisultape0
- Interactor
- BPHe0pest
- Outcome
- BPH damage, number of rice tillers and plant heighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For Zhengdao 2, the fungicide jingganmycin and the insecticide bisultap had a significant influence on BPH damage, number of rice tillers and plant height”
Claim · model-written summary
Jingganmycin had a significant effect on BPH damage to rice variety Xiushui 63.
- Taxon
- riceOryza sativat0
- Material
- Xiushui 63e0
- Treatment
- jingganmycine0
- Interactor
- BPHe0pest
- Outcome
- BPH damagee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In contrast to butachlor, jingganmycin and bisultap had a significant effect on BPH damage to Xiushui 63”
t0“susceptibility of rice to brown planthopper”
Claim · model-written summary
Bisultap had a significant effect on BPH damage to rice variety Xiushui 63.
- Taxon
- riceOryza sativat0
- Material
- Xiushui 63e0
- Treatment
- bisultape0
- Interactor
- BPHe0pest
- Outcome
- BPH damagee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In contrast to butachlor, jingganmycin and bisultap had a significant effect on BPH damage to Xiushui 63”
t0“susceptibility of rice to brown planthopper”
Claim · model-written summary
Jingganmycin and bisultap had no significant effect on tiller number and plant height of rice variety Xiushui 63.
- Taxon
- riceOryza sativae0
- Material
- Xiushui 63e0
- Treatment
- these two pesticidese0
- Outcome
- number of rice tillers and plant heighte0
- Direction
- no_changeinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these two pesticides had no significant effect on the number of rice tillers and plant height of Xiushui 63”
Claim · model-written summary
The effective duration of butachlor on rice plants was greater than that of jingganmycin and bisultap.
- Taxon
- riceOryza sativae0
- Treatment
- butachlore0
- Outcome
- effective duratione0
- Direction
- greatere0
- Comparator
- jingganmycin and bisultape0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In general, the effective duration of butachlor on rice plants was greater than jingganmycin and bisultap”
Claim · model-written summary
Oxalic acid content and photosynthesis in rice plants declined significantly after jingganmycin and bisultap treatments.
- Taxon
- riceOryza sativae0
- Treatment
- jingganmycin and bisultap treatmentse0
- Outcome
- Oxalic acid content and photosynthesise0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oxalic acid content and photosynthesis in rice plants declined significantly after jingganmycin and bisultap treatments”
Claim · model-written summary
Pesticide-induced susceptibility of rice to BPH counteracts the role of varietal resistance in integrated pest management.
- Taxon
- riceOryza sativae0
- Interactor
- BPHe0pest
- Outcome
- role of varietal resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pesticide-induced susceptibility of rice resistance to BPH counteracts the role of varietal resistance in integrated pest management”
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