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You searched for: Subject bolls Remove constraint Subject: bolls Subject term cultivars Remove constraint Subject term: cultivars
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1. Nondestructive Method for the Determination of Boll Surface Area in Cotton

Author:
B. L. McMichael; C. D. Elmore; G. W. Cathey
Source:
Agronomy journal 1976 v.68 no.2 pp. 426-427
ISSN:
0002-1962
Subject:
Gossypium hirsutum; bolls; cotton; cultivars; equations; greenhouses; nondestructive methods; regression analysis; surface area; transpiration
Abstract:
... Fruit (boll) transpiration rates in cotton (Gossypium hirsutum L.) may be important in boll growth and movement of materials into developing bolls. Therefore to facilitate comparisons of transpiration rates of different age (and size) bolls, a nondestructive method for the estimation of cotton boll surface areas was evaluated using two commercial cultivars grown in the greenhouse. Boll length was ...
DOI:
10.2134/agronj1976.00021962006800020058x

2. Response of Cotton to Row Patterns and Plant Populations

Author:
Shelby H. Baker
Source:
Agronomy journal 1976 v.68 no.1 pp. 85-88
ISSN:
0002-1962
Subject:
bolls; cultivars; early development; harvesting; insect control; lint cotton; planting; weeds
Abstract:
... Theoretically, cotton planted in narrow rows at high plant populations has a potential of reducing production cost by promoting earlier maturity. The cost of controlling insects, weeds, and harvest due to a once-over harvest would all be reduced. Studies were conducted to determine how a cultivar developed for conventional production methods would respond to a narrow row system. Coker 310 was plan ...
DOI:
10.2134/agronj1976.00021962006800010023x

3. Cotton Population Dynamics: Influence of the Within-the-Row Spacing and Emergence Time

Author:
D. F. Wanjura; J. D. Bilbro
Source:
Agronomy journal 1977 v.69 no.2 pp. 312-318
ISSN:
0002-1962
Subject:
Gossypium hirsutum; bolls; cotton; cultivars; developmental stages; plant height; population dynamics; sample size; stem nodes
Abstract:
... Dynamic and stochastic properties of cotton (Gossypium hirsutum L.) plant populations increase the difficulty of production management. The influence of four within-the-row plant spacings on beds spaced at 102 an (5, 20, and 40 cm, and random 7.5 to 10 cm) and three times of emergence (5, 7, and 9 days in 1973; 6, 8, and 10 days in 1974) on means and coefficient(s) of variability (CV) of plant hei ...
DOI:
10.2134/agronj1977.00021962006900020027x

4. Effects of Topping Pima Cotton on Lint Yield and Boll Retention

Author:
D. L. Kittock; K. E. Fry
Source:
Agronomy journal 1977 v.69 no.1 pp. 65-67
ISSN:
0002-1962
Subject:
Gossypium barbadense; Lygus hesperus; Pectinophora gossypiella; abscission; bolls; cultivars; fruit set; insect infestations; lint cotton; lint yield; plant damage; plant height; seed weight; stem nodes; yield components
Abstract:
... Substantial mid- and late-season topping of American Pima cotton (Gossypium barbadense L.) plants occurs in field plantings. Lygus bug (Lygus hesperus Knight) feeding is the apparent cause of topping. The effects of mid to late.season topping on lint yield and several yield components of ‘Pima S-4’ cotton were examined. Topping of Pima S-4 cotton in mid-July, early.August, and mid-August reduced p ...
DOI:
10.2134/agronj1977.00021962006900010017x

5. Seed Setting Efficiency in Eight Cultivars of Upland Cotton

Author:
John H. Turner; J. McD. Stewart; P. E. Hoskinson; H. H. Ramey
Source:
Crop science 1977 v.17 no.5 pp. 769-772
ISSN:
0011-183X
Subject:
Gossypium hirsutum; bolls; cultivars; ovules; seed set; seeds; Tennessee
Abstract:
... Seed setting efficiency was determined for six cultivars of Upland cotton (Gossypium hirsutum L.) in 1974 and eight cultivars in 1975 at Jackson, Tenn. The number of ovules per ovary was determined by examining blooms at weekly periods. Simultaneously tagged blooms provided identifiable bolls from each bloom period to determine the number of seeds per boll. Seed setting efficiency (S.S.E.) was cal ...
DOI:
10.2135/cropsci1977.0011183X001700050023x

6. Breeding Potentials of Noncultivated Cottons. IV. Location and Parental Effects on Agronomic Characters and Fiber Properties in Hybrids

Author:
F. D. Wilson; R. L. Wilson
Source:
Crop science 1978 v.18 no.3 pp. 467-471
ISSN:
0011-183X
Subject:
Gossypium hirsutum; Pectinophora gossypiella; agronomic traits; bolls; cotton; cultivars; fiber quality; genetic variation; heterosis; hybrids; inheritance (genetics); insecticides; Arizona
Abstract:
... We studied the inheritance of six agronomic characters and five fiber properties in Ft hybrids between two cultivars and eight primitive race stocks of cotton, Gossypium hirsutum L., in 1975 and between the same two cultivars and four other race stocks in 1976. Plants were grown at Phoenix, Ariz., where insecticides were applied as needed for control of pink bollworm, Pectinophora gossypiella (Sau ...
DOI:
10.2135/cropsci1978.0011183X001800030028x

7. Timing Late-season Fruiting Termination of Cotton with Potassium 3,4-Dichloroisothiazole-5-Carboxylate

Author:
D. L. Kittock; H. Fred Arle; T. J. Henneberry; L. A. Bariola; V. T. Walhood
Source:
Crop science 1980 v.20 no.3 pp. 330-333
ISSN:
0011-183X
Subject:
cotton; harvest date; Pectinophora gossypiella; application timing; cultivars; flowering; Gossypium hirsutum; plant growth substances; Gossypium barbadense; fruit set; potassium; immatures; bolls; insect control; Arizona; California
Abstract:
... A plant growth regulator, Pennwalt TD-1123³ (3,4- dichlorolsothiazole-5-carboxylic acid) was evaluated as a chemical termination agent for reducing fruit set on cotton (Gossyplum spp.) in 32 tests in Arizona and California from 1974 through 1977. A reduction in immature bolls through chemical termination causes a similar reduction in diapausing pink bollworms [Pectinophora gossypiella (Saunders)]. ...
Handle:
10113/54623
DOI:
10.2135/cropsci1980.0011183X002000030010x

8. Breeding Potentials of Noncultivated Cottons. V. Productivity of Cultivars, Race Stocks, and F1 Hybrids among Them in Long- and Short-Day Environments

Author:
F. D. Wilson; B. W. George
Source:
Crop science 1981 v.21 no.3 pp. 410-414
ISSN:
0011-183X
Subject:
cotton; cultivars; heterosis; hybrids; environment; races; winter; Gossypium hirsutum; parents; agronomic traits; genotype-environment interaction; additive gene effects; summer; genetic variation; bolls; lint yield; Puerto Rico
Abstract:
... Twelve primitive race stocks of cotton (Gossypiura hirsutum L.), four Upland cultivars, and 24 race stock ✕ cultivar F₁ hybrids were grown in three replicated tests in the summer at Phoenix, Ariz. and in the winter at Isabela, Puerto Rico. Objectives of this research were to compare productivity, to study hybrid expression of agronomic properties, and to determine the effects of cultivar ✕ race st ...
Handle:
10113/54604
DOI:
10.2135/cropsci1981.0011183X002100030014x

9. Effect of short-season cotton on overwintering pink bollworm larvae and spring moth emergence

Author:
Walhood, V.T.; Henneberry, T.J.; Bariola, L.A.; Kittock, D.L.; Brown, C.M.
Source:
Journal of economic entomology 1981 v.74 no.3 pp. 297-302
ISSN:
0022-0493
Subject:
Gossypium; Pectinophora gossypiella; bolls; crop yield; cropping systems; crops; cultivars; early development; genotype; insect control; insecticides; irrigation; larvae; larval development; moths; overwintering; seed cotton; soil; valleys
Abstract:
... A cultural system for short-season cotton, Gossypium spp., incorporating narrow rows(two rows ca. 36 cm apart on beds spaced ca. 102 cm apart) and early irrigation cutoff resulted in early-maturing cotton in Imperial Valley, Calif, with harvests completed by 24 August 1978. Yields were over 4,000 kg of seed cotton per ha with no insecticide applied for insect control. Cotton yields in systems with ...
Handle:
10113/54606
DOI:
10.1093/jee/74.3.297

10. Predicting Cotton Crop Boll Development

Author:
D. F. Wanjura; O. H. Newton
Source:
Agronomy journal 1981 v.73 no.3 pp. 476-481
ISSN:
0002-1962
Subject:
Gossypium hirsutum; air temperature; bolls; cultivars; lint cotton; prediction; High Plains (United States); Texas
Abstract:
... Cotton (Gossypium hirsutum L.) lint development on the Texas High Plains frequently spans periods of low temperature that reduce yield and quality. We conducted a study in 1977 to 1979 at Lubbock, Texas, to develop a procedure for estimating the level of crop lint maturity at any time after boll setting begins. The procedure includes a model that uses the initiation date for each 1/10 increment of ...
DOI:
10.2134/agronj1981.00021962007300030020x

11. Cotton Cultivar Response to Plant Populations in a Short-Season, Narrow-Row Cultural System

Author:
Khalid Bin Mohamad; W. P. Sappenfield; J. M. Poehlman
Source:
Agronomy journal 1982 v.74 no.4 pp. 619-625
ISSN:
0002-1962
Subject:
Argiudolls; Gossypium hirsutum; agronomic traits; bolls; cultivars; fiber quality; fruiting; genotype; harvesting; lint cotton; lint yield; pests; plant density; planting date; river deltas; seed size; silt loam soils
Abstract:
... The need for reducing time of crop exposure to pests has given emphasis to cultural changes in row widths and plant densities for upland cotton, Gossypium hirsutum L., and this has challenged available cultivars to avoid losses in yield and fiber quality. Four genotypes, HYC72-234/320 (very early), ‘Auburn M’ (early), MO63-277 BR (medium early), and ‘Stoneville 213’ (medium early to full-season) w ...
DOI:
10.2134/agronj1982.00021962007400040008x

12. Cotton Cultivar Response to Mepiquat Chloride

Author:
A. C. York
Source:
Agronomy journal 1983 v.75 no.4 pp. 663-667
ISSN:
0002-1962
Subject:
Gossypium hirsutum; bolls; chlorides; cultivars; lint cotton; lint yield; mepiquat; micronaire; pesticides; plant height; seed weight
Abstract:
... The effects of mepiquat chloride (1,1-dimethylpiperidinium chloride) on cotton (Gossypium hirsutum L.) growth and yield have been widely studied but few studies have investigated cultivar response to this plant growth regulator. Since the response to a pesticide or a plant growth regulator may vary among cultivars, a knowledge of cultivar response to that chemical is an important consideration whe ...
DOI:
10.2134/agronj1983.00021962007500040020x

13. Effect of Pink Bollworm on Agronomic Properties of Resistant and Susceptible Cotton

Author:
F. D. Wilson; B. W. George
Source:
Crop science 1983 v.23 no.4 pp. 695-698
ISSN:
0011-183X
Subject:
Gossypium barbadense; Gossypium hirsutum; Pectinophora gossypiella; agronomic traits; bolls; breeding stock; cultivars; growing season; harvesting; highlands; insects; pest resistance; plant damage; seed cotton; seeds
Abstract:
... Little is known about the differential effects of the attack of pink boilworm (PBW), Pectinophora gossypiella (Saunders), on agronomic properties of resistant and susceptible cottons, Gossypium spp. The major objective of this study was to determine and compare those effects in a susceptible cultivar and a resistant breeding stock of upland cotton, G. hirsutum L., and a susceptible cultivar of Pim ...
Handle:
10113/54679
DOI:
10.2135/cropsci1983.0011183X002300040022x

14. Pink bollworm (Lepidoptera: Gelechiidae): oviposition and larval success on resistant and susceptible cotton plants

Author:
Wilson, F.D.; George, B.W.; Szaro, J.L.
Source:
Journal of economic entomology 1984 v.77 no.3 pp. 709-714
ISSN:
0022-0493
Subject:
Gossypium hirsutum; Pectinophora gossypiella; antibiosis; bolls; branches; breeding stock; cotton; cultivars; eggs; field experimentation; flowers; greenhouse experimentation; greenhouses; insecticides; larvae; larval development; leaves; oviposition; pest resistance
Abstract:
... Oviposition and larval development of pink boll worm (PBW), Pectinophora Gossypiella (Saunders), on a breeding stock of upland cotton, Gossypium hirsutum L., designated AET-5, was compared to that on a commercial cultivar, 'Deltapine 61' (DPL-61), in greenhouse no-choice and free-choice tests, and in field free-choice tests. The field resistance of AET-5 was caused mainly by lower PBW oviposition. ...
Handle:
10113/54663
DOI:
10.1093/jee/77.3.709

15. Pink bollworm: effects of early maturing, narrow row cotton, insecticides, and chemical termination on seasonal infestations and overwintering larvae

Author:
Bariola, L.A.; Henneberry, T.J.; Walhood, V.T.; Brown, C.
Source:
Southwestern entomologist 1984 v.9 no.1 pp. 62-68
ISSN:
2162-2647
Subject:
Pectinophora gossypiella; application timing; bolls; chemical treatment; chlorflurenol; cotton; crop yield; cultivars; diapause; dicamba; insecticides; irrigation; larvae; overwintering; pesticide application; production technology; row spacing
Abstract:
... Early irrigation cut-off of cotton (July 23) in narrow row (51 cm) spacing prevented the development of any diapause pink bollworm, Pectinophora gossypiella (Saunders), larvae. However, yields were reduced when compared to a full-season production system with conventional (102 cm) row spacing. Insecticide applications were essential in conventional row spaced, full-season cotton to prevent loss fr ...
Handle:
10113/54653

16. Cotton Response to Planting Date and Mepiquat Chloride

Author:
George W. Cathey; William R. Meredith
Source:
Agronomy journal 1988 v.80 no.3 pp. 463-466
ISSN:
0002-1962
Subject:
Gossypium hirsutum; planting date; crop yield; bolls; fiber quality; fruiting; cultivars; mepiquat
Abstract:
... Few studies have documented the effect of planting date on cotton (Gossypium hirsutum L.) response to mepiquat chloride (MC) (N,N-dimethylpiperidinum chloride). Planting dates were mid-April, early May, and mid-May during 1982, 1983, and 1984, and consisted of five cultivars representing three general maturity types: early—‘DES 422’; intermediate—‘Coker 3131’, ‘Stoneville 825’, and ‘McNair 235’ an ...
DOI:
10.2134/agronj1988.00021962008000030014x

17. Daily Flower Production, Rate of Seed, and Fiber Flax Cultivars as Related to Seed Yield

Author:
C. Dean Dybing; C. Lay
Source:
Crop science 1989 v.29 no.4 pp. 1062-1066
ISSN:
0011-183X
Subject:
cultivars; seeds; Linum usitatissimum; flowers; agronomic traits; yield components; bolls
Abstract:
... Flower production of flax (Linum usitatissimum L.) should be directly related to the yield component fruits per area, but past studies have shown that neither total flowers nor length of bloom was as effective as daily flower production rate for modeling seed yield of one cuitivar. The objective of this study was to develop procedures relating flower production to seed yield and its components for ...
DOI:
10.2135/cropsci1989.0011183X002900040049x

18. Effects of cultivar and boll age on aflatoxin in cottonseed after inoculation with Aspergillus flavus at simulated exit holes of the pink bollworm

Author:
Cotty, P.J.
Source:
Plant Disease 1989 v.73 no.6 pp. 489-492
ISSN:
0191-2917
Subject:
Gossypium hirsutum; Gossypium barbadense; Aspergillus flavus; bolls; age; mechanical damage; aflatoxins; seeds; cultivars
DOI:
10.1094/PD-73-0489

19. Potential for Increasing Cotton Yields Through Enhanced Partitioning to Reproductive Structures

Author:
William R. Meredith; Randy Wells
Source:
Crop science 1989 v.29 no.3 pp. 636-639
ISSN:
0011-183X
Subject:
cultivars; stems; Gossypium hirsutum; dry matter accumulation; agronomic traits; crop yield; genotype-environment interaction; genotype; genetic variance; bolls; vegetative growth; Mississippi
Abstract:
... Yield increases in cotton (Gossypium hirsutum L.) have been primarily through changes in partitioning dry matter from vegetative to reproductive structures. The objective of this study was to determine if yield increases would likely continue through continued changes in dry matter partitioning. Five obsolete cultivars, five popular and high yielding cultivars from five cotton breeding organizatio ...
DOI:
10.2135/cropsci1989.0011183X002900030017x

20. Effectiveness of Fruiting Sites in Cotton: Yield

Author:
Johnie N. Jenkins; J. C. McCarty; W. L. Parrott
Source:
Crop science 1990 v.30 no.2 pp. 365-369
ISSN:
0011-183X
Subject:
Gossypium hirsutum; cultivars; fruiting; bolls; branches; crop yield; lint cotton; pest resistance; Mississippi
Abstract:
... The fruiting sites at which cotton, Gossypium hirsutum L., plants set bolls that are harvested influence how well the plants tolerate insects. The objective of this research was to determine the fruiting patterns of eight cultivars of cotton in terms of fruiting sites of harvestable bolls when planted in a conventional pattern of rows spaced 1-m apart with a plant population of approximately 95 00 ...
DOI:
10.2135/cropsci1990.0011183X003000020024x

21. Fruiting Efficiency in Cotton: Boll Size and Boll Set Percentage

Author:
Johnie N. Jenkins; J. C. McCarty; W. L. Parrott
Source:
Crop science 1990 v.30 no.4 pp. 857-860
ISSN:
0011-183X
Subject:
Gossypium hirsutum; bolls; fruit set; cultivars; crop yield; Mississippi
Abstract:
... Cotton plants, Gossypium hirsutum L., initiate more fruiting buds than are matured. This research quantified the boll set percentage and boll size by fruiting site in a population of cotton plants. The fruiting sites of harvestable bolls were recorded for 2 yr in eight cultivars: Stoneville 213 (ST 213), Stoneville 506 (ST 506), Stoneville 825 (ST 825), Tamcot CAMD-E (CAMD-E), Deltapine 50 (DPL 50 ...
DOI:
10.2135/cropsci1990.0011183X003000040018x

22. Chemical Efficacy of Early Square Removal and Subsequent Productivity of Superokra-Leaf Cotton

Author:
C. W. Kennedy; W. C. Smith; J. E. Jones
Source:
Crop science 1991 v.31 no.3 pp. 791-796
ISSN:
0011-183X
Subject:
cultivars; canopy; abscission; Gossypium hirsutum; early development; plant characteristics; ethylene production; height; chemical pruning; silver nitrate; yield components; ethephon; bolls; fruiting; vegetative growth
Abstract:
... Delaying fruit set of superokra-leaf cotton (Gossypium hirsutum L.) can potentially improve yields and provide an excellent trap-crop system for boll weevil (Anthonomus grandis Boh.) management if a practical means of early-season square removal could be obtained. We determined the efficacy of ethephon (2-chloroethylphosphonic acid) applications on removing early squares, effectiveness of Ag⁺ at r ...
DOI:
10.2135/cropsci1991.0011183X003100030050x

23. Combining Ability for Yield Characteristics and Earliness of Pink Bollworm-Resistant Cotton

Author:
F. Douglas Wilson
Source:
Crop science 1991 v.31 no.4 pp. 922-925
ISSN:
0011-183X
Subject:
germplasm; Pectinophora gossypiella; cultivars; hybrids; lint cotton; seeds; Gossypium hirsutum; early development; general combining ability; agronomic traits; yield components; pest resistance; bolls; lint yield; specific combining ability
Abstract:
... Some germplasm lines of cotton, Gossypium hinutum L., that show resistance to pink bollworm (PBW), Pectinophora gossypiella (Saunders), also carry agronomic properties that could enhance derived germplasm. The objectives of this study were to determine (i) the agronomic performance of four germplasm lines having resistance to PBW, one having susceptibility, and the check cultivar, Stoneville 825 ( ...
Handle:
10113/54996
DOI:
10.2135/cropsci1991.0011183X003100040016x

24. Pre-ripening damage to cottonseed by Aspergillus flavus is not influenced by seed coat permeability

Author:
Halloin, J.M.; Lee, L.S.; Cotty, P.J.
Source:
Journal of the American Oil Chemists' Society 1991 v.68 no.7 pp. 522-523
ISSN:
0003-021X
Subject:
cultivars; testa; infection; Gossypium hirsutum; aflatoxins; dehiscence; seed quality; seed maturation; permeability; bolls; Aspergillus flavus
Abstract:
... Infetion of cottonseed (Gossypium hirsutum L.) by Aspergillus flavus and associated production of aflatoxins are problems in the arid portions of the United States cotton belt. The hard seed (impermeable to water) characteristic confers resistance to these problems in ripened cottonseed. Experiments were done to determine if low seed coat permeability to water or impermeability protect developing ...
DOI:
10.1007/BF02663827

25. Productivity and Tobacco Budworm Resistance of Cotton Developed between 1890 and 1986

Author:
Tommy F. Wharton; Johnie N. Jenkins; J. C. McCarthy; W. L. Parrott
Source:
Crop science 1991 v.31 no.1 pp. 29-32
ISSN:
0011-183X
Subject:
Helicoverpa zea; Gossypium hirsutum; pest resistance; crop yield; lint cotton; bolls; cultivars; genetic resistance
Abstract:
... There is a paucity of information on the relationships between modern (i.e., released in or after 1978) and historically obsolete cotton (Gossypium hirsutum L.) cultivars with respect to their ability to yield when grown in the presence of high levels of tobacco budworm (TBW), Heliothis virescens F. The objective of this study was to compare 18 cultivars of cotton developed between 1890 and 1986 f ...
DOI:
10.2135/cropsci1991.0011183X003100010006x

26. Reduction in Insecticide Use Associated with Cotton Resistant to Pink Bollworm

Author:
F. Douglas Wilson; Hollis M. Flint; Louis A. Bariola; Chang Chi Chu
Source:
Crop science 1991 v.31 no.2 pp. 363-366
ISSN:
0011-183X
Subject:
Pectinophora gossypiella; cultivars; insect pests; application timing; lint cotton; insecticides; genetic resistance; application rate; Gossypium hirsutum; early development; crop yield; ethephon; fiber quality; pest resistance; bolls
Abstract:
... Cotton (Gossypium hirsutum L.) growers use significant quantities of insecticides to control pink bollworm (PBW), Pectinophora gossypiella (Saunders). The germplasm line WC-12NL (nectariless, okra leaf, and early maturing) and ‘Deltapine 61’ (nectaried, normal leaf, and later maturing) were grown at Maricopa, AZ, and Brawley, CA, for three seasons. Irrigation water was terminated and plots were de ...
DOI:
10.2135/cropsci1991.0011183X003100020028x

27. Mepiquat Chloride and Irrigation versus Cotton Growth and Development

Author:
V. R. Reddy; A. Trent; B. Acock
Source:
Agronomy journal 1992 v.84 no.6 pp. 930-933
ISSN:
0002-1962
Subject:
height; plant characteristics; Gossypium hirsutum; vegetative growth; early development; fruiting; irrigation scheduling; soil water content; crop yield; bolls; cultivars; mepiquat; Mississippi
Abstract:
... Cotton (Gossypium hirsutum L.) produces excessive vegetative growth when grown under optimum water and nutrient conditions. The plant growth regulator Mepiquat Chloride (MC); 1,l-dimethyl piperidinium chloride reduces vegetative growth and can promote early maturity. Its effect on yield has been inconsistent, with some researchers showing an increase while others have indicated a decrease. This va ...
DOI:
10.2134/agronj1992.00021962008400060004x

28. Season Length and Cultivar Determine the Optimum Evapotranspiration Deficit in Cotton

Author:
F. Orgaz; L. Mateos; E. Fereres
Source:
Agronomy journal 1992 v.84 no.4 pp. 700-706
ISSN:
0002-1962
Subject:
Gossypium hirsutum; cultivars; maturity stage; irrigated conditions; evapotranspiration; sprinkler irrigation; crop yield; bolls; dry matter accumulation; seeds; irrigation scheduling; seasonal development; duration; Spain
Abstract:
... In areas where the growing-season length limits cotton (Gossypium hirsutum L.) production, irrigation practices that meet the maximum evapotranspiration (ET) demand have been shown to promote excessive vegetative growth and to reduce yield. Past experiments using limited irrigation in cotton do not provide generalized information on the magnitude of ET deficits that optimize lint yields, however. ...
DOI:
10.2134/agronj1992.00021962008400040031x

29. Temperature Effects on Cotton Fruit Retention

Author:
K. R. Reddy; H. F. Hodges; V. R. Reddy
Source:
Agronomy journal 1992 v.84 no.1 pp. 26-30
ISSN:
0002-1962
Subject:
cultivars; buds; abscission; Gossypium hirsutum; air temperature; flowers; environmental factors; bolls; fruiting
Abstract:
... Temperature is a major environmental factor that affects cotton (Gossypium hirsutum L.) production. Temperatures of 35 to 40°C are frequently observed in cotton-producing areas. High-temperature environments are sometimes associated with cotton sterility and boll retention problems; however, there is little specific information available on cotton sensitivity to temperature. We conducted a series ...
DOI:
10.2134/agronj1992.00021962008400010006x

30. Temperature Effects on Pima Cotton Growth and Development

Author:
K. R. Reddy; H. F. Hodges; J. M. McKinion; G. W. Wall
Source:
Agronomy journal 1992 v.84 no.2 pp. 237-243
ISSN:
0002-1962
Subject:
cultivars; heat tolerance; air temperature; fruiting; Gossypium barbadense; plant characteristics; height; environmental factors; diurnal variation; bolls; vegetative growth
Abstract:
... An understanding of genetic and environmental factors affecting plant growth and development is needed for accurate yield predictions by crop models. At present there is little information about how Pima cotton, Gossypium barbadense L., a species known for its excellent lint quality, will respond to various temperatures. The objective of this experiment was to determine the growth and developmenta ...
DOI:
10.2134/agronj1992.00021962008400020022x

31. Cotton Boll Retention and Its Relationship to Lint Yield

Author:
James J. Heitholt
Source:
Crop science 1993 v.33 no.3 pp. 486-490
ISSN:
0011-183X
Subject:
Gossypium hirsutum; cultivars; genetic variation; bolls; abscission; fruiting; crop yield; lint cotton; genotype
Abstract:
... Fruit retention helps determine cotton (Gossypium hirsutum L.) yield. Study objectives were to (i) characterize genotypic variation in whole-plant boll retention percentage, (ii) determine the relationship between retention and lint yield, and (iii) characterize timing, stage, and frequency of fruiting-form abscission over two seasons in eight field-grown genotypes: normal-, sub okra., okra-, and ...
DOI:
10.2135/cropsci1993.0011183X003300030014x

32. F2 Hybrids of Host Plant Germplasm and Cotton Cultivars: I. Heterosis and Combining Ability for Lint Yield and Yield Components

Author:
Bing Tang; Johnie N. Jenkins; J. C. McCarty; C. E. Watson
Source:
Crop science 1993 v.33 no.4 pp. 700-705
ISSN:
0011-183X
Subject:
germplasm; cultivars; plant breeding; heterosis; hybrids; lint cotton; Gossypium hirsutum; general combining ability; disease resistance; yield components; pest resistance; bolls; specific combining ability
Abstract:
... Although pest-resistant cotton (Gossypium hirsutum L.) germplasm is available, it is generally not equal to adapted cultivars and other elite germplasm in yield. Cotton F₂ hybrids could provide a means to combine beneficial traits of high-yielding adapted cultivar (elite) germplasm with those of pest-resistant germplasms. In the F₂ heterosis and combining ability were studied for lint yield and th ...
DOI:
10.2135/cropsci1993.0011183X003300040012x

33. Late Season Water Stress in Cotton: I. Plant Growth, Water Use, and Yield

Author:
T. J. Gerik; K. L. Faver; P. M. Thaxton; K. M. El-Zik
Source:
Crop science 1996 v.36 no.4 pp. 914-921
ISSN:
0011-183X
Subject:
cultivars; Gossypium hirsutum; soil water regimes; drought tolerance; leaf area index; water stress; dry matter partitioning; yield components; water uptake; bolls
Abstract:
... The behavior of water stressed cotton (Gossypium hirsutum L.) is well documented but our knowledge of traits which can be genetically manipulated to improve drought tolerance is incomplete. This study was conducted to determine which morphological and physiological factors lessen the effects of water stress on the yield of two short-season cultivars [i.e., TAMCOT HQ95 (HQ95)and (G&P 74+ (GP74)] wi ...
DOI:
10.2135/cropsci1996.0011183X003600040017x

34. Effects of phosphorus fertilization and foliar application of chelated zinc and calcium on quantitative and qualitative properties of Egyptian cotton (Gossypium barbadense L. var. Giza 75)

Author:
Sawan, Z.M.; Mahmoud, M.H.; Momtaz, O.A.
Source:
Journal of agricultural and food chemistry 1997 v.45 no.8 pp. 3326-3330
ISSN:
0021-8561
Subject:
Gossypium barbadense; agricultural research; bolls; calcium; cultivars; dry matter accumulation; early development; fertilizer rates; field experimentation; foliar application; lint cotton; lint yield; micronaire; phosphorus; planting; seed cotton; shoots; sowing; yield components; zinc; Egypt
Abstract:
... Field experiments in two successive seasons, at the Agricultural Research Center (ARC), Giza, Egypt, were conducted to study the effects of phosphorus fertilization (addition at rates of 44 or 74 kg of P2O5/ha) and foliar application of zinc (applied at 0.0 or 40 ppm of Zn at two times: 75 and 90 days after planting) and calcium (applied at 0.0, 20, 40, or 60 ppm of Ca at two times: 80 and 95 days ...
DOI:
10.1021/jf950816x

35. Influence of nitrogen fertilization and foliar application of plant growth retardants and zinc on quantitative and qualitative properties of Egyptian cotton (Gossypium barbadense L. var. Giza 75)

Author:
Sawan, Z.M.; Mahmoud, M.H.; Momtaz, O.A.
Source:
Journal of agricultural and food chemistry 1997 v.45 no.8 pp. 3331-3336
ISSN:
0021-8561
Subject:
Gossypium barbadense; agricultural research; bolls; cultivars; dry matter accumulation; early development; field experimentation; foliar application; lint cotton; lint yield; nitrogen fertilizers; plant growth substances; planting; seed cotton; yield components; zinc; Egypt
Abstract:
... Field experiments, in two successive seasons, at the Agricultural Research Center, Giza, Egypt, determined the effect of N fertilization (addition at rates of 107 or 161 kg of N/ha) and foliar application of plant growth retardants (Pix, Cycocel, or Alar, each applied once at 300 ppm, 75 days after planting) and zinc (applied at 0.0 or 50 ppm, two times: 80 and 95 days after planting) on growth, m ...
DOI:
10.1021/jf950817p

36. Resistance of Cotton with δ-Endotoxin Genes from Bacillus thuringiensis var. kurstaki on Selected Lepidopteran Insects

Author:
Johnie N. Jenkins; Jack C. McCarty; Robert E. Buehler; Jack Kiser; Curtis Williams; Tom Wofford
Source:
Agronomy journal 1997 v.89 no.5 pp. 768-780
ISSN:
0002-1962
Subject:
Gossypium hirsutum; Bacillus thuringiensis subsp. kurstaki; transgenic plants; gene expression; agronomic traits; pest resistance; Heliothis virescens; Helicoverpa zea; crop yield; crossing; cultivars; genetic engineering; larvae; weight; leaves; bolls; lint cotton; Spodoptera frugiperda; genotype
Abstract:
... Transgenic cotton (Gossypium hirsutum L.) plants that express truncated versions of insect control protein genes cryIA (c) and cryIIA of Bacillus thuringiensis Berliner var. kurstaki (Bt) have been developed for managing lepidopteran pests. However, agronomic traits and pest resistance can vary among transformation events. We examined selected agronomic traits and resistance, in laboratory and fie ...
DOI:
10.2134/agronj1997.00021962008900050010x

37. Bemesia argentifolii (Homoptera: Aleyrodidae) population relationships to cotton and lint stickiness in long and short staple cottons

Author:
Henneberry, T.J.; Jech, L. Forlow; Hendrix, D.L.; Brushwood, D.E.
Source:
Journal of economic entomology 1998 v.91 no.5 pp. 1196-1207
ISSN:
1938-291X
Subject:
Bemisia argentifolii; Gossypium hirsutum; adults; bolls; cultivars; eggs; honeydew; immatures; insect control; insecticides; leaves; lint cotton; melezitose; nymphs; pesticide application; plant density; staple (fibers); stickiness; trehalulose
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 plan ...
Handle:
10113/55050
DOI:
10.1093/jee/91.5.1196

38. Introgression of Day-Neutral Genes in Primitive Cotton Accessions: II. Predicted Genetic Effects

Author:
J. C. McCarty; J. N. Jenkins; J. Zhu
Source:
Crop science 1998 v.38 no.6 pp. 1428-1431
ISSN:
0011-183X
Subject:
backcrossing; cultivars; crop quality; plant breeding; dietary fiber; seeds; Gossypium hirsutum; fiber quality; genes; introgression; yield components; photoperiod; progeny; length; photoperiodism; bolls; prediction
Abstract:
... Primitive accessions of cotton, Gossypium hirsutum L., may provide useful traits for cultivar development. Genetic effects for yield, yield components, and fiber traits were analyzed for five generations of day-neutral progenies. The genetic material was derived from introgressing day-neutral genes from ‘Deltapine 16’ into 16 primitive accessions with single and multiple backcrosses creating 80 po ...
Handle:
10113/2832
DOI:
10.2135/cropsci1998.0011183X003800060003x

39. Photosynthate and Dry Matter Partitioning in Short- and Long-Season Cotton Cultivars

Author:
P. F. Pace; Harry T. Cralle; J. Tom Cothren; Scott A. Senseman
Source:
Crop science 1999 v.39 no.4 pp. 1065-1069
ISSN:
0011-183X
Subject:
Gossypium hirsutum; dry matter partitioning; early development; cultivars; source-sink relationships; bolls; stems; leaves; field experimentation; isotope labeling; carbon; starch; sexual reproduction; photosynthates; Texas
Abstract:
... Differences in source-sink relationships between short- and long-season cotton (Gossypium hirsutum L.) cultivars, the contribution of main stem leaves to boll growth, and the distribution of nonstructural carbohydrates late in the season are not well understood. This study compared the cultivars Tamcot CAMD-E (a short-season type) and Stoneville 213 (a long-season type) for two seasons in the fiel ...
DOI:
10.2135/cropsci1999.0011183X003900040018x

40. Correlating differences in larval survival and development of bollworm (Lepidoptera: Noctuidae) and fall armyworm (Lepidoptera: Noctuidae) to differential expression of Cry1A(c) delta-endotoxin in various plant parts among commercial cultivars of transgenic Bacillus thuringiensis cotton

Author:
Adamczyk, J.J. Jr.; Hardee, D.D.; Adams, L.C.; Sumerford, D.V.
Source:
Journal of economic entomology 2001 v.94 no.1 pp. 284-290
ISSN:
0022-0493
Subject:
mortality; flowers; bolls; leaves; spatial distribution; gene expression; endotoxins; transgenic plants; cultivars; Spodoptera frugiperda; Helicoverpa zea; Mississippi
Abstract:
... Differences in larval survival and development of bollworm, Helicoverpa zea (Boddie), and fall armyworm, Spodoptera frugiperda (J.E. Smith), respectively, were found to exist among commercially available Cry1A(c) transgenic Bacillus thuringiensis Berliner (Bt) varieties. Using a quantification assay (ELISA) to measure the levels of delta-endotoxin in two of these varieties ('DP 451B/RR' and 'NuCOT ...
Handle:
10113/22373
DOI:
10.1603/0022-0493-94.1.284
PubMed:
11233127

41. Interval of days required for determining efficient relations between climatic factors and cotton flower and boll production

Author:
Sawan, Z.M.; Hanna, L.I.; McCuistion, W.L.
Source:
Canadian journal of plant science 2002 v.82 no.3 pp. 499-506
ISSN:
0008-4220
Subject:
cultivars; flowering; solar radiation; soil temperature; air temperature; Gossypium barbadense; plant density; humidity; duration; evaporation; wind speed; field experimentation; climatic factors; bolls; Egypt
DOI:
10.4141/P01-013

42. Sowing date and insecticide trails with selected multi-adversity resistant cotton varieties in the Northern Guinea Savanna of Nigeria

Author:
Kuchinda, N.C.; Onu, I.; Echekwu, C.
Source:
Journal of sustainable agriculture 2002 v.20 no.1 pp. 5-15
ISSN:
1044-0046
Subject:
height; plant characteristics; Gossypium hirsutum; cultivars; pest resistance; field experimentation; crop yield; bolls; cypermethrin; genetic resistance; sowing date; Nigeria
Abstract:
... Field Trials were conducted during the wet seasons of 1996-1998 on the farm of the Institute for Agricultural Research, Samaru to evaluate some selected multi-adversity resistant varieties of cotton (Gossypium hirstum L.) grown under three sowing dates and insecticide sprayed and unsprayed conditions. The use of insecticide reduced leaf roller (Sylepta derogata) incidence and improved the growth a ...
DOI:
10.1300/J064v20n01_03

43. Distribution of bollworm, Helicoverpa zea (Boddie), injured reproductive structures on genetically engineered Bacillus thuringiensis var. kurstaki Berliner cotton

Author:
Gore, J.; Leonard, B.R.; Gable, R.H.
Source:
Journal of economic entomology 2003 v.96 no.3 pp. 699-705
ISSN:
0022-0493
Subject:
cotton; Helicoverpa zea; cultivars; pest management; insect pests; buds; Gossypium hirsutum; transgenic plants; economic threshold; Bacillus thuringiensis subsp. kurstaki; crop damage; flowers; crystal proteins; genetic engineering; larvae; bolls
DOI:
10.1093/jee/96.3.699
PubMed:
12852607

44. Experimental assessment of the impact of defoliation on growth and production of water-stressed maize and cotton plants

Author:
Yang, Z.; Midmore, D.J.
Source:
Experimental agriculture 2004 v.40 no.2 pp. 189-199
ISSN:
0014-4797
Subject:
Zea mays; corn; Gossypium hirsutum; lint cotton; cultivars; defoliation; plant growth; grain yield; water stress; soil water regimes; seed productivity; bolls; fruiting; leaves; stomatal conductance; photosynthesis; shoots; dry matter accumulation; Australia
Abstract:
... In this study, different levels of defoliation were imposed on a determinate species (maize) and a relatively indeterminate species (cotton). The aim was to quantify the effects of defoliation on plant growth and production, under either optimum or water-stressed conditions. Under well-watered conditions, 33% defoliation twice (conducted 28 and 35 days after emergence) resulted in a 16% reduction ...
DOI:
10.1017/S0014479703001534

45. Fiber length development in near-long staple upland cotton

Author:
Braden, C.A.; Smith, C.W.
Source:
Crop science 2004 v.44 no.5 pp. 1553-1559
ISSN:
0011-183X
Subject:
cotton; weight; cultivars; flowering; staple (fibers); Gossypium hirsutum; fiber crops; crop yield; genotype; length; genetic variation; heritability; bolls; Texas
Abstract:
... Advanced Fiber Information System (AFIS) mean fiber length by weight (L(w)), fiber length development period (FLDP), and average daily fiber length growth rates (ADGR) were determined for four experimental strains and three cultivars of upland cotton, Gossypium hirsutum L., in 1998 and 1999 in College Station, TX. TAM 94L-25 and TAM 94M-14, near-long staple sib lines developed by the Texas Agricul ...

46. Influence of potassium rates and sources on seed cotton yield and yield components of some elite cotton cultivars

Author:
Pervez, H.; Ashraf, M.; Makhdum, M.I.
Source:
Journal of plant nutrition 2004 v.27 no.7 pp. 1295-1317
ISSN:
0190-4167
Subject:
Cambisols; Gossypium hirsutum; Haplocambids; bolls; cultivars; fertilizer rates; field experimentation; leaves; potassium; potassium chloride; potassium fertilizers; potassium sulfate; seed cotton; silt loam soils; yield components; Pakistan
Abstract:
... A field experiment was conducted at Central Cotton Research Institute, Multan, Pakistan on Miani soil series, silt loam soil (Calcaric, Cambisols and fine silty, mixed Hyperthermic Fluventic Haplocambids) to assess the response of four cotton (Gossypium hirsutum L.) cultivars to potassium (K) fertilization. The treatments consisted of four cotton cultivars (CIM-448, CIM-1100, NIAB-Karishma, S-12), ...
DOI:
10.1081/PLN-120038549

47. Response of late-planted cotton to the application of a growth regulator (chlorocholine chloride, Cycocel 75)

Author:
Mondino, M.H.; Peterlin, O.A.; Garay, F.
Source:
Experimental agriculture 2004 v.40 no.3 pp. 381-387
ISSN:
0014-4797
Subject:
planting date; cultivars; plant growth; Gossypium hirsutum; plant growth substances; air temperature; chlorides; dry matter accumulation; height; bolls; growing season; harvest index; stem nodes; fiber quality; spraying; seed cotton; Argentina
Abstract:
... The influence of a growth regulator, chlorocholine chloride (commercial name Cycocel 75) on plant growth, (yield) and quality of late-seeded (mid-December) cotton (Gossypium hirsutum) was studied in the Rio Dulce Irrigation Area, northwest Argentina, during three growth cycles (1998-2001). Cycocel 75 reduced plant height and node number as well as the total production of aerial biomass, thus incre ...
DOI:
10.1017/S0014479704002017

48. The influence of defoliation timing on yields and quality of two cotton cultivars

Author:
Faircloth, J.C.; Edmisten, K.L.; Wells, R.; Stewart, A.M.
Source:
Crop science 2004 v.44 no.1 pp. 165-172
ISSN:
0011-183X
Subject:
cultivars; application timing; lint cotton; Gossypium hirsutum; crop yield; defoliation; fiber quality; bolls
Abstract:
... The timing of certain cotton (Gossypium hirsutum L.) management practices varies according to the yield potential and quality characteristics associated with a variety. A defoliation timing study was performed to (i) determine if certain cultivars respond differently to defoliation timings and (ii) compare the use of the open boll percentage at defoliation (OBPD), nodes above cracked boll (NACB), ...

49. Comparisons of Two Statistical Models for Evaluating Boll Retention in Cotton

Author:
Jixiang Wu; Johnie N. Jenkins; Jack C. McCarty; Clarence E. Watson
Source:
Agronomy journal 2005 v.97 no.5 pp. 1291-1294
ISSN:
0002-1962
Subject:
cotton; crop models; cultivars; linear models; Gossypium hirsutum; fruit set; fiber crops; regression analysis; fruit drop; yield components; inbred lines; bolls; Mississippi
Abstract:
... Boll number is one of the most important traits related to yield of upland cotton (Gossypium hirsutum L.). Evaluation of boll retention properties at different fruiting sites would provide useful information for cotton breeding and cotton growth management. The presence or absence of a boll at each fruiting position can be considered as binomially distributed. In this study, 188 upland cotton reco ...
Handle:
10113/2863
DOI:
10.2134/agronj2004.0216

50. Evaluation of five most commonly grown cotton cultivars (Gossypium hirsutum L.) under mediterranean conditions: productivity and fibre quality

Author:
Avgoulas, C.; Bouza, L.; Koutrou, A.; Papadopoulou, S.; Kosmas, S.; Makridou, E.; Papastylianou, P.; Bilalis, D.
Source:
Journal of agronomy and crop science 2005 v.191 no.1 pp. 1-9
ISSN:
0931-2250
Subject:
cultivars; crop quality; staple (fibers); Gossypium hirsutum; strength (mechanics); crop yield; genotype-environment interaction; weather; bolls; seed cotton; Mediterranean climate; Greece
DOI:
10.1111/j.1439-037X.2004.00139.x