Abstract
Pepper plant Capsicum annuum L. has great nutritional value and many pharmaceutical properties but its sensitivity to pests such as Aphis gossypii Glover, especially in drought stress conditions, has limited its production. To evaluate the effect of drought stress on the population and damage rate of this pest in greenhouse condition, four moisture treatments including; full irrigation, 15, 30 and 45 percent of water deficit, and four treatments with different amounts of super absorbent polymer (SAP) containing 2, 4, 6 and 8 g per pot were separately performed in completely randomized design. Four weeks after applying drought stress, the pots were moved near the aphid sources. Density of aphids was examined after one month of infestation, and the plant growth characteristics after two months. It was found that the increase in severe drought stress (45% DI45) significantly raised the population of this pest and remarkably decreased plant growth rate and yield. However, the low stress of drought (15% DI15) not only caused relative reduction of insect’s population, but also saved water consumption and increased crop yield. However, the insect population was elevated as a result of increase in the amount of irrigation. Although the excessive use of SAP (8 g) increased the aphid population, the current experiment showed the use of 4 and 6 g of super absorbents could minimize the irrigation stress, decrease the pest population and improve yield of the plants by retaining the moisture in drought conditions.
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Claims 14
Claim · model-written summary
Severe 45% drought significantly increased aphid population on pepper.
- Taxon
- Pepper plant Capsicum annuum L.
Capsicum annuume1 - Treatment
- severe drought stress (45% DI45)e0
- Interactor
- Aphis gossypii Glover
Aphis gossypiie1pest - Outcome
- population of this peste0
- Direction
- raisede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase in severe drought stress (45% DI45) significantly raised the population of this pest”
e1“Pepper plant Capsicum annuum L. has great nutritional value and many pharmaceutical properties but its sensitivity to pests such as Aphis gossypii Glover”
Claim · model-written summary
Severe 45% drought markedly reduced pepper growth rate.
- Taxon
- Pepper plant Capsicum annuum L.Capsicum annuume1
- Treatment
- severe drought stress (45% DI45)e0
- Interactor
- Aphis gossypii GloverAphis gossypiie1pest
- Outcome
- plant growth ratee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase in severe drought stress (45% DI45) significantly raised the population of this pest and remarkably decreased plant growth rate and yield”
e1“Pepper plant Capsicum annuum L. has great nutritional value and many pharmaceutical properties but its sensitivity to pests such as Aphis gossypii Glover”
Claim · model-written summary
Severe 45% drought markedly reduced pepper yield.
- Taxon
- Pepper plant Capsicum annuum L.Capsicum annuume1
- Treatment
- severe drought stress (45% DI45)e0
- Interactor
- Aphis gossypii GloverAphis gossypiie1pest
- Outcome
- yielde0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase in severe drought stress (45% DI45) significantly raised the population of this pest and remarkably decreased plant growth rate and yield”
e1“Pepper plant Capsicum annuum L. has great nutritional value and many pharmaceutical properties but its sensitivity to pests such as Aphis gossypii Glover”
Claim · model-written summary
Low 15% drought relatively reduced aphid population.
- Taxon
- Pepper plant Capsicum annuum L.Capsicum annuume1
- Treatment
- low stress of drought (15% DI15)e0
- Interactor
- Aphis gossypii GloverAphis gossypiie1pest
- Outcome
- insect’s populatione0
- Direction
- relative reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the low stress of drought (15% DI15) not only caused relative reduction of insect’s population”
e1“Pepper plant Capsicum annuum L. has great nutritional value and many pharmaceutical properties but its sensitivity to pests such as Aphis gossypii Glover”
Claim · model-written summary
Low 15% drought saved irrigation water use.
- Taxon
- Pepper plant Capsicum annuum L.Capsicum annuume1
- Treatment
- low stress of drought (15% DI15)e0
- Outcome
- water consumptione0
- Direction
- savede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the low stress of drought (15% DI15) not only caused relative reduction of insect’s population, but also saved water consumption”
e1“Pepper plant Capsicum annuum L.”
Claim · model-written summary
Low 15% drought increased pepper yield.
- Taxon
- Pepper plant Capsicum annuum L.Capsicum annuume1
- Treatment
- low stress of drought (15% DI15)e0
- Outcome
- crop yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the low stress of drought (15% DI15) not only caused relative reduction of insect’s population, but also saved water consumption and increased crop yield”
e1“Pepper plant Capsicum annuum L.”
Claim · model-written summary
Increasing irrigation increased the aphid population.
- Taxon
- Pepper plant Capsicum annuum L.Capsicum annuume1
- Treatment
- increase in the amount of irrigatione0
- Interactor
- Aphis gossypii GloverAphis gossypiie1pest
- Outcome
- insect populatione0
- Direction
- elevatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the insect population was elevated as a result of increase in the amount of irrigation”
e1“Pepper plant Capsicum annuum L. has great nutritional value and many pharmaceutical properties but its sensitivity to pests such as Aphis gossypii Glover”
Claim · model-written summary
The excessive 8 g polymer treatment increased the aphid population.
- Taxon
- Pepper plant Capsicum annuum L.Capsicum annuume1
- Treatment
- SAP (8 g)e0
- Interactor
- Aphis gossypii GloverAphis gossypiie1pest
- Outcome
- aphid populatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the excessive use of SAP (8 g) increased the aphid population”
e1“Pepper plant Capsicum annuum L. has great nutritional value and many pharmaceutical properties but its sensitivity to pests such as Aphis gossypii Glover”
Claim · model-written summary
Four-gram superabsorbent use minimized irrigation stress.
- Taxon
- Pepper plant Capsicum annuum L.Capsicum annuume1
- Treatment
- 4e0
- Outcome
- irrigation stresse0
- Direction
- minimizee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the use of 4 and 6 g of super absorbents could minimize the irrigation stress, decrease the pest population and improve yield of the plants by retaining the moisture in drought conditions”
e1“Pepper plant Capsicum annuum L.”
Claim · model-written summary
Six-gram superabsorbent use minimized irrigation stress.
- Taxon
- Pepper plant Capsicum annuum L.Capsicum annuume1
- Treatment
- 6 g of super absorbentse0
- Outcome
- irrigation stresse0
- Direction
- minimizee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the use of 4 and 6 g of super absorbents could minimize the irrigation stress, decrease the pest population and improve yield of the plants by retaining the moisture in drought conditions”
e1“Pepper plant Capsicum annuum L.”
Claim · model-written summary
Four-gram superabsorbent use could decrease aphid population.
- Taxon
- Pepper plant Capsicum annuum L.Capsicum annuume1
- Treatment
- 4e0
- Interactor
- Aphis gossypii GloverAphis gossypiie1pest
- Outcome
- pest populatione0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the use of 4 and 6 g of super absorbents could minimize the irrigation stress, decrease the pest population and improve yield of the plants by retaining the moisture in drought conditions”
e1“Pepper plant Capsicum annuum L. has great nutritional value and many pharmaceutical properties but its sensitivity to pests such as Aphis gossypii Glover”
Claim · model-written summary
Six-gram superabsorbent use could decrease aphid population.
- Taxon
- Pepper plant Capsicum annuum L.Capsicum annuume1
- Treatment
- 6 g of super absorbentse0
- Interactor
- Aphis gossypii GloverAphis gossypiie1pest
- Outcome
- pest populatione0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the use of 4 and 6 g of super absorbents could minimize the irrigation stress, decrease the pest population and improve yield of the plants by retaining the moisture in drought conditions”
e1“Pepper plant Capsicum annuum L. has great nutritional value and many pharmaceutical properties but its sensitivity to pests such as Aphis gossypii Glover”
Claim · model-written summary
Four-gram superabsorbent use could improve pepper yield in drought conditions.
- Taxon
- Pepper plant Capsicum annuum L.Capsicum annuume1
- Treatment
- 4e0
- Outcome
- yield of the plantse0
- Direction
- improvee0
- Qualifier
- in drought conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the use of 4 and 6 g of super absorbents could minimize the irrigation stress, decrease the pest population and improve yield of the plants by retaining the moisture in drought conditions”
e1“Pepper plant Capsicum annuum L.”
Claim · model-written summary
Six-gram superabsorbent use could improve pepper yield in drought conditions.
- Taxon
- Pepper plant Capsicum annuum L.Capsicum annuume1
- Treatment
- 6 g of super absorbentse0
- Outcome
- yield of the plantse0
- Direction
- improvee0
- Qualifier
- in drought conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the use of 4 and 6 g of super absorbents could minimize the irrigation stress, decrease the pest population and improve yield of the plants by retaining the moisture in drought conditions”
e1“Pepper plant Capsicum annuum L.”
The same questions in other papers
drought · yield · Capsicum annuum (sweet pepper)Results differ
2 papers in the same direction as this paper · 8 in the opposite direction
- negative
- negative
- negative
7 papers more in this group
See all 11 papers →drought · physiology: water · Capsicum annuum (sweet pepper)Positive and negative results
4 in the opposite direction
- no effect
- negative
- negative
1 paper more in this group
See all 5 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.