Abstract
Whitefly honeydew contamination resulting in sticky cotton lint is a significant problem in the textile industry throughout the world. We conducted studies in 1995 and 1996 to determine the effects of cotton cultivars, cotton plant densities, and insecticides on Bemisia argentifolii Bellows & Perring populations and the subsequent effects on honeydew cotton lint contamination. In 1995, cotton plant densities of25 or 100,000 plants per hectare had no effect on numbers of B. argentifolii, adults, eggs, or nymphs based on adult leaf turns and immatures counted on leaf disks. There also was no effect on extracted honeydew sugars from lint samples or thermodetector sticky cotton counts (the international standard for measuring cotton lint stickiness). Higher numbers of whiteflies occurred in early-season in ‘Pima S-7’ cotton than in ‘Deltapine (DPL) 50’ in 1995 and 1996 or ‘DPL 5415’ cotton in 1995. In 1995, amounts of trehalulose and melezitose (insect honeydew sugars) extracted from cotton lint and thermodetector counts of lint samples were higher for DPL 50 compared with Pima S-7 but not DPL 5415. Insecticide treatments, in both years, reduced thermodetector counts and honeydew sugars extracted from lint. Increases in thermodetector sticky cotton counts and trehalulose and melezitose were significantly correlated to increasing B. argentifolii nymphal and adult populations. Thermodetector sticky cotton counts did not reach levels of concern (≥5) until adult leaf-turn counts were 8.9 or when all life stage nymphs were 3.2 per square centimeter of leaf disk during the open mature cotton boll period.
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Claims 9
Claim · model-written summary
Cotton density had no effect on whitefly counts.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- cotton plant densities of25 or 100,000 plants per hectaree0
- Interactor
- B. argentifolii
Bemisia argentifoliie0pest - Outcome
- numbers of B. argentifolii, adults, eggs, or nymphse0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cotton plant densities of25 or 100,000 plants per hectare had no effect on numbers of B. argentifolii, adults, eggs, or nymphs”
e1“cotton plant densities of25 or 100,000 plants per hectare had no effect on numbers of B. argentifolii, adults, eggs, or nymphs”
Claim · model-written summary
Cotton density had no effect on lint honeydew sugars or stickiness counts.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- cotton plant densitiese1
- Outcome
- extracted honeydew sugars from lint samples or thermodetector sticky cotton countse0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There also was no effect on extracted honeydew sugars from lint samples or thermodetector sticky cotton counts”
e1“cotton plant densities of25 or 100,000 plants per hectare had no effect on numbers of B. argentifolii, adults, eggs, or nymphs”
Claim · model-written summary
Pima S-7 had more early season whiteflies than DPL 50.
- Taxon
- cottonGossypium hirsutume0
- Material
- Pima S-7e0
- Interactor
- whitefliesAleyrodoideae0pest
- Outcome
- numbers of whitefliese0
- Direction
- Highere0
- Comparator
- Deltapine (DPL) 50e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher numbers of whiteflies occurred in early-season in ‘Pima S-7’ cotton than in ‘Deltapine (DPL) 50’ in 1995 and 1996”
e1“cotton plant densities of25 or 100,000 plants per hectare had no effect on numbers of B. argentifolii, adults, eggs, or nymphs”
Claim · model-written summary
Pima S-7 had more whiteflies than DPL 5415 in 1995.
- Taxon
- cottonGossypium hirsutume0
- Material
- Pima S-7e0
- Interactor
- whitefliesAleyrodoideae0pest
- Outcome
- numbers of whitefliese0
- Direction
- Highere0
- Comparator
- DPL 5415e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher numbers of whiteflies occurred in early-season in ‘Pima S-7’ cotton than in ‘Deltapine (DPL) 50’ in 1995 and 1996 or ‘DPL 5415’ cotton in 1995”
e1“cotton plant densities of25 or 100,000 plants per hectare had no effect on numbers of B. argentifolii, adults, eggs, or nymphs”
Claim · model-written summary
DPL 50 lint had more honeydew sugars and stickiness than Pima S-7.
- Taxon
- cottonGossypium hirsutume0
- Material
- DPL 50e0
- Outcome
- amounts of trehalulose and melezitose (insect honeydew sugars) extracted from cotton lint and thermodetector counts of lint samplese0
- Direction
- highere0
- Comparator
- Pima S-7e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“amounts of trehalulose and melezitose (insect honeydew sugars) extracted from cotton lint and thermodetector counts of lint samples were higher for DPL 50 compared with Pima S-7 but not DPL 5415”
e1“cotton plant densities of25 or 100,000 plants per hectare had no effect on numbers of B. argentifolii, adults, eggs, or nymphs”
Claim · model-written summary
Insecticides reduced sticky cotton counts and lint honeydew sugars.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Insecticide treatmentse0
- Outcome
- thermodetector counts and honeydew sugars extracted from linte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Insecticide treatments, in both years, reduced thermodetector counts and honeydew sugars extracted from lint”
e1“cotton plant densities of25 or 100,000 plants per hectare had no effect on numbers of B. argentifolii, adults, eggs, or nymphs”
t0“Population Relationships to Cotton”
Claim · model-written summary
Sticky counts and honeydew sugars rose with whitefly populations.
- Taxon
- cottonGossypium hirsutume0
- Interactor
- B. argentifoliiBemisia argentifoliie0pest
- Outcome
- thermodetector sticky cotton counts and trehalulose and melezitosee0
- Direction
- Increasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increases in thermodetector sticky cotton counts and trehalulose and melezitose were significantly correlated to increasing B. argentifolii nymphal and adult populations”
e1“cotton plant densities of25 or 100,000 plants per hectare had no effect on numbers of B. argentifolii, adults, eggs, or nymphs”
Claim · model-written summary
Concerning stickiness began at 8.9 adult leaf turn counts.
- Taxon
- cottonGossypium hirsutume0
- Outcome
- Thermodetector sticky cotton countse0
- Value
- 8.9e0
- Qualifier
- levels of concern (≥5)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thermodetector sticky cotton counts did not reach levels of concern (≥5) until adult leaf-turn counts were 8.9”
e1“cotton plant densities of25 or 100,000 plants per hectare had no effect on numbers of B. argentifolii, adults, eggs, or nymphs”
Claim · model-written summary
Concerning stickiness began at 3.2 nymphs per square centimeter.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- Thermodetector sticky cotton countse2
- Value
- 3.2 per square centimeter of leaf diske0
- Qualifier
- open mature cotton boll periode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“or when all life stage nymphs were 3.2 per square centimeter of leaf disk during the open mature cotton boll period”
e1“cotton plant densities of25 or 100,000 plants per hectare had no effect on numbers of B. argentifolii, adults, eggs, or nymphs”
e2“Thermodetector sticky cotton counts did not reach levels of concern (≥5) until adult leaf-turn counts were 8.9”
t0“Population Relationships to Cotton”
The same questions in other papers
density · organism · Gossypium hirsutum (cotton)Positive and negative results
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See all 9 papers →insecticide · organism · Gossypium hirsutum (cotton)Positive and negative results
7 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- no effect
- negative
8 papers more in this group
See all 12 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.