Abstract
The insecticidal efficacy of 10%, 5% and 1% w/v of Tephrosia vogelii, Croton dichogamus and Syzygium aromaticum aqueous plant extracts were assessed against larvae of Plutella xylostella and Trichoplusia ni on Brassica oleracea var. capitata crop field. Synthetic organophosphate pesticide (Chlorpyrifos) was used as a positive control and the negative controls were water and water plus soap. It was revealed that, aqueous plant extracts significantly (P ≤ 0.05) controlled the number of P. xylostella and T. ni larvae compared to negative controls. The 10% concentration of aqueous plant extracts showed significant higher efficacy in terms of reducing the insect population and their damage than 1% and 5 % concentration. The population of P. xylostella larvae per B. oleracea in five weeks of treatment applications at 10% w/v of T. vogelii, C. dichogamus and S. aromaticum aqueous plant extracts were 0.08, 0.15, 0.13, 0.05 and 0.08; 0.08, 0.20, 0.15, 0.13 and 0.18; 0.03, 0.05, 0.15, 0.18 and 0.13, respectively which was significantly (P ≤ 0.05) lower than in water (1.13, 1.68, 2.28, 2.20 and 3.28) and water plus soap (0.75, 1.60, 2.58, 1.83 and 3.30) negative controls respectively. The number of T. ni larvae per B. oleracea in five weeks of treatment applications at 10% w/v of T. vogelii, C. dichogamus and S. aromaticum of aqueous plant extracts were 0.00, 0.03, 0.05, 0.03 and 0.00; 0.03, 0.08, 0.05, 0.08 and 0.08; 0.05, 0.03, 0.00, 0.05 and 0.03, respectively which was significantly (P ≤ 0.05) lower than in water (0.50, 0.63, 0.60, 0.48 and 0.78) and water plus soap (0.30, 0.48, 68, 0.65 and 0.80) negative controls. The percentage damage of B. oleracea in five weeks of treatment applications at 10% w/v of T. vogelii, C. dichogamus and S. aromaticum aqueous plant extracts were 10.0, 6.3, 7.5, 7.5 and 5.6; 11.3, 11.3, 11.3, 11.3 and 12.5; 8.8, 8.1, 6.9, 8.1 and 9.4, respectively compared with water (33.8, 33.1, 38.8, 45.0 and 70.6) and water plus soap (30.0, 31.9, 41.3, 41.3 and 56.3). These pesticidal plants can be recommended for smallholder farmers to significantly control P. xylostella and T. ni larvae in B. oleracea crop.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 15
Claim · model-written summary
Aqueous plant extracts significantly reduced P. xylostella larvae versus negative controls.
- Taxon
- Brassica oleracea
Brassica oleraceat0 - Treatment
- aqueous plant extractse0
- Interactor
- P. xylostellae0pest
- Outcome
- P. xylostellae0
- Direction
- controllede0
- Comparator
- negative controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“aqueous plant extracts significantly (P ≤ 0.05) controlled the number of P. xylostella and T. ni larvae compared to negative controls”
t0“on Brassica oleracea crop”
Claim · model-written summary
Aqueous plant extracts significantly reduced T. ni larvae versus negative controls.
- Taxon
- Brassica oleraceaBrassica oleraceat0
- Treatment
- aqueous plant extractse0
- Interactor
- T. nie0pest
- Outcome
- T. ni larvaee0
- Direction
- controllede0
- Comparator
- negative controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“aqueous plant extracts significantly (P ≤ 0.05) controlled the number of P. xylostella and T. ni larvae compared to negative controls”
t0“on Brassica oleracea crop”
Claim · model-written summary
The 10% extract concentration was more effective at reducing insect populations than 1% and 5%.
- Taxon
- Brassica oleraceaBrassica oleraceat0
- Treatment
- 10% concentration of aqueous plant extractse0
- Outcome
- insect populatione0
- Direction
- reducinge0
- Comparator
- 1% and 5 % concentratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 10% concentration of aqueous plant extracts showed significant higher efficacy in terms of reducing the insect population and their damage than 1% and 5 % concentration”
t0“on Brassica oleracea crop”
Claim · model-written summary
The 10% extract concentration was more effective at reducing insect damage than 1% and 5%.
- Taxon
- Brassica oleraceaBrassica oleraceat0
- Treatment
- 10% concentration of aqueous plant extractse0
- Outcome
- their damagee0
- Direction
- reducinge0
- Comparator
- 1% and 5 % concentratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 10% concentration of aqueous plant extracts showed significant higher efficacy in terms of reducing the insect population and their damage than 1% and 5 % concentration”
t0“on Brassica oleracea crop”
Claim · model-written summary
At 10% T. vogelii extract, weekly P. xylostella larval counts were lower than negative controls.
- Taxon
- B. oleraceaBrassica oleraceae0
- Treatment
- 10% w/v of T. vogeliie0
- Interactor
- P. xylostellae0pest
- Outcome
- population of P. xylostella larvae per B. oleraceae0
- Direction
- lowere0
- Value
- 0.08, 0.15, 0.13, 0.05 and 0.08e0
- Comparator
- watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The population of P. xylostella larvae per B. oleracea in five weeks of treatment applications at 10% w/v of T. vogelii, C. dichogamus and S. aromaticum aqueous plant extracts were 0.08, 0.15, 0.13, 0.05 and 0.08; 0.08, 0.20, 0.15, 0.13 and 0.18; 0.03, 0.05, 0.15, 0.18 and 0.13, respectively which was significantly (P ≤ 0.05) lower than in water (1.13, 1.68, 2.28, 2.20 and 3.28) and water plus soap (0.75, 1.60, 2.58, 1.83 and 3.30) negative controls respectively”
Claim · model-written summary
At 10% C. dichogamus extract, weekly P. xylostella larval counts were lower than negative controls.
- Taxon
- B. oleraceaBrassica oleraceae0
- Treatment
- C. dichogamuse0
- Interactor
- P. xylostellae0pest
- Outcome
- population of P. xylostella larvae per B. oleraceae0
- Direction
- lowere0
- Value
- 0.08, 0.20, 0.15, 0.13 and 0.18e0
- Comparator
- watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The population of P. xylostella larvae per B. oleracea in five weeks of treatment applications at 10% w/v of T. vogelii, C. dichogamus and S. aromaticum aqueous plant extracts were 0.08, 0.15, 0.13, 0.05 and 0.08; 0.08, 0.20, 0.15, 0.13 and 0.18; 0.03, 0.05, 0.15, 0.18 and 0.13, respectively which was significantly (P ≤ 0.05) lower than in water (1.13, 1.68, 2.28, 2.20 and 3.28) and water plus soap (0.75, 1.60, 2.58, 1.83 and 3.30) negative controls respectively”
Claim · model-written summary
At 10% S. aromaticum extract, weekly P. xylostella larval counts were lower than negative controls.
- Taxon
- B. oleraceaBrassica oleraceae0
- Treatment
- S. aromaticume0
- Interactor
- P. xylostellae0pest
- Outcome
- population of P. xylostella larvae per B. oleraceae0
- Direction
- lowere0
- Value
- 0.03, 0.05, 0.15, 0.18 and 0.13e0
- Comparator
- watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The population of P. xylostella larvae per B. oleracea in five weeks of treatment applications at 10% w/v of T. vogelii, C. dichogamus and S. aromaticum aqueous plant extracts were 0.08, 0.15, 0.13, 0.05 and 0.08; 0.08, 0.20, 0.15, 0.13 and 0.18; 0.03, 0.05, 0.15, 0.18 and 0.13, respectively which was significantly (P ≤ 0.05) lower than in water (1.13, 1.68, 2.28, 2.20 and 3.28) and water plus soap (0.75, 1.60, 2.58, 1.83 and 3.30) negative controls respectively”
Claim · model-written summary
At 10% T. vogelii extract, weekly T. ni larval counts were lower than negative controls.
- Taxon
- B. oleraceaBrassica oleraceae0
- Treatment
- 10% w/v of T. vogeliie0
- Interactor
- T. nie0pest
- Outcome
- number of T. ni larvae per B. oleraceae0
- Direction
- lowere0
- Value
- 0.00, 0.03, 0.05, 0.03 and 0.00e0
- Comparator
- watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of T. ni larvae per B. oleracea in five weeks of treatment applications at 10% w/v of T. vogelii, C. dichogamus and S. aromaticum of aqueous plant extracts were 0.00, 0.03, 0.05, 0.03 and 0.00; 0.03, 0.08, 0.05, 0.08 and 0.08; 0.05, 0.03, 0.00, 0.05 and 0.03, respectively which was significantly (P ≤ 0.05) lower than in water (0.50, 0.63, 0.60, 0.48 and 0.78) and water plus soap (0.30, 0.48, 68, 0.65 and 0.80) negative controls”
Claim · model-written summary
At 10% C. dichogamus extract, weekly T. ni larval counts were lower than negative controls.
- Taxon
- B. oleraceaBrassica oleraceae0
- Treatment
- C. dichogamuse0
- Interactor
- T. nie0pest
- Outcome
- number of T. ni larvae per B. oleraceae0
- Direction
- lowere0
- Value
- 0.03, 0.08, 0.05, 0.08 and 0.08e0
- Comparator
- watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of T. ni larvae per B. oleracea in five weeks of treatment applications at 10% w/v of T. vogelii, C. dichogamus and S. aromaticum of aqueous plant extracts were 0.00, 0.03, 0.05, 0.03 and 0.00; 0.03, 0.08, 0.05, 0.08 and 0.08; 0.05, 0.03, 0.00, 0.05 and 0.03, respectively which was significantly (P ≤ 0.05) lower than in water (0.50, 0.63, 0.60, 0.48 and 0.78) and water plus soap (0.30, 0.48, 68, 0.65 and 0.80) negative controls”
Claim · model-written summary
At 10% S. aromaticum extract, weekly T. ni larval counts were lower than negative controls.
- Taxon
- B. oleraceaBrassica oleraceae0
- Treatment
- S. aromaticume0
- Interactor
- T. nie0pest
- Outcome
- number of T. ni larvae per B. oleraceae0
- Direction
- lowere0
- Value
- 0.05, 0.03, 0.00, 0.05 and 0.03e0
- Comparator
- watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of T. ni larvae per B. oleracea in five weeks of treatment applications at 10% w/v of T. vogelii, C. dichogamus and S. aromaticum of aqueous plant extracts were 0.00, 0.03, 0.05, 0.03 and 0.00; 0.03, 0.08, 0.05, 0.08 and 0.08; 0.05, 0.03, 0.00, 0.05 and 0.03, respectively which was significantly (P ≤ 0.05) lower than in water (0.50, 0.63, 0.60, 0.48 and 0.78) and water plus soap (0.30, 0.48, 68, 0.65 and 0.80) negative controls”
Claim · model-written summary
T. vogelii extract gave weekly cabbage damage percentages of 10.0, 6.3, 7.5, 7.5 and 5.6, below water controls.
- Taxon
- B. oleraceaBrassica oleraceae0
- Treatment
- 10% w/v of T. vogeliie0
- Outcome
- percentage damage of B. oleraceae0
- Direction
- lowerinferrede0
- Value
- 10.0, 6.3, 7.5, 7.5 and 5.6e0
- Comparator
- watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The percentage damage of B. oleracea in five weeks of treatment applications at 10% w/v of T. vogelii, C. dichogamus and S. aromaticum aqueous plant extracts were 10.0, 6.3, 7.5, 7.5 and 5.6; 11.3, 11.3, 11.3, 11.3 and 12.5; 8.8, 8.1, 6.9, 8.1 and 9.4, respectively compared with water (33.8, 33.1, 38.8, 45.0 and 70.6) and water plus soap (30.0, 31.9, 41.3, 41.3 and 56.3)”
Claim · model-written summary
C. dichogamus extract gave weekly cabbage damage percentages of 11.3, 11.3, 11.3, 11.3 and 12.5, below water controls.
- Taxon
- B. oleraceaBrassica oleraceae0
- Treatment
- C. dichogamuse0
- Outcome
- percentage damage of B. oleraceae0
- Direction
- lowerinferrede0
- Value
- 11.3, 11.3, 11.3, 11.3 and 12.5e0
- Comparator
- watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The percentage damage of B. oleracea in five weeks of treatment applications at 10% w/v of T. vogelii, C. dichogamus and S. aromaticum aqueous plant extracts were 10.0, 6.3, 7.5, 7.5 and 5.6; 11.3, 11.3, 11.3, 11.3 and 12.5; 8.8, 8.1, 6.9, 8.1 and 9.4, respectively compared with water (33.8, 33.1, 38.8, 45.0 and 70.6) and water plus soap (30.0, 31.9, 41.3, 41.3 and 56.3)”
Claim · model-written summary
S. aromaticum extract gave weekly cabbage damage percentages of 8.8, 8.1, 6.9, 8.1 and 9.4, below water controls.
- Taxon
- B. oleraceaBrassica oleraceae0
- Treatment
- S. aromaticume0
- Outcome
- percentage damage of B. oleraceae0
- Direction
- lowerinferrede0
- Value
- 8.8, 8.1, 6.9, 8.1 and 9.4e0
- Comparator
- watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The percentage damage of B. oleracea in five weeks of treatment applications at 10% w/v of T. vogelii, C. dichogamus and S. aromaticum aqueous plant extracts were 10.0, 6.3, 7.5, 7.5 and 5.6; 11.3, 11.3, 11.3, 11.3 and 12.5; 8.8, 8.1, 6.9, 8.1 and 9.4, respectively compared with water (33.8, 33.1, 38.8, 45.0 and 70.6) and water plus soap (30.0, 31.9, 41.3, 41.3 and 56.3)”
Claim · model-written summary
The authors recommend the pesticidal plants for smallholder control of P. xylostella larvae in cabbage.
- Taxon
- B. oleraceaBrassica oleraceae0
- Interactor
- P. xylostellae0pest
- Outcome
- control P. xylostellae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These pesticidal plants can be recommended for smallholder farmers to significantly control P. xylostella and T. ni larvae in B. oleracea crop”
Claim · model-written summary
The authors recommend the pesticidal plants for smallholder control of T. ni larvae in cabbage.
- Taxon
- B. oleraceaBrassica oleraceae0
- Interactor
- T. nie0pest
- Outcome
- T. ni larvaee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These pesticidal plants can be recommended for smallholder farmers to significantly control P. xylostella and T. ni larvae in B. oleracea crop”
The same questions in other papers
Tephrosia vogelii · pest · Brassica oleracea (wild cabbage)Results agree
1 paper in the same direction as this paper
- positive
Syzygium aromaticum · pest · Brassica oleracea (wild cabbage)Results agree
1 paper in the same direction as this paper
- positive
botanical · pest · Brassica oleracea (wild cabbage)Positive and negative results
64 papers in the same direction as this paper · 13 in the opposite direction
- positive
- no effect
- negative
74 papers more in this group
See all 78 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.