Arizona Cotton Research Articles

Longevity and Fecundity of the Boll Weevil Complex in Arizona12

Adult boll weevils, Anthonomus grandis Boheman, collected from cultivated cotton in Arizona lived an average of 6 months in the laboratory, and a few lived as long as 11 months; in the field this longevity was abbreviated. Thurberia weevils, A. grandis thurberiae Pierce, were lived than weevils from cultivated cotton, and overwintering thurberia weevils lived longer than the 1st square-reared generation. The fecundity of Arizona boll weevils was highly variable, and the potential was drastically reduced in the field. The ovipositional pattern of weevils from cultivated cotton was relatively consist-tent and apparently was closely associated with longevity.

Encarsia lutea as an Egg Parasite of Bollworm and Cabbage Looper in Arizona Cotton12

Eggs of the bollworm, Heliothis zea (Boddie), and the cabbage looper, Trichoplusia ni (Hübner), on Arizona cotton were parasitized by the eulophid Encarsia lutea (Masi). Although its rate of yearly parasitism is not high, it occurs in numbers that can be measured. In all probability mostly female parasites issue from whiteflies, Trialeurodes abutilonea (Haldeman), and T. vaporariorum (Westwood), but only males emerge from lepidopterous eggs. The parasite can stop development of fertile bollworm and cabbage looper eggs even after they are 2 days old. Virgin female parasites produce males in lepidopterous eggs.

Fruiting Height Response: A Consideration in Varietal Improvement of Pima Cotton, Gossypium barbadense L.1

Crop ScienceVolume 5, Issue 5 cropsci1965.0011183X000500050026x p. 460-464 Article Fruiting Height Response: A Consideration in Varietal Improvement of Pima Cotton, Gossypium barbadense L.1 Carl V. Feaster, Carl V. FeasterSearch for more papers by this authorE. L. Turcotte, E. L. Turcotte Research Agronomist and Research Geneticist, Crops Research Division, ARS, USDA.Search for more papers by this author Carl V. Feaster, Carl V. FeasterSearch for more papers by this authorE. L. Turcotte, E. L. Turcotte Research Agronomist and Research Geneticist, Crops Research Division, ARS, USDA.Search for more papers by this author First published: 01 September 1965 https://doi.org/10.2135/cropsci1965.0011183X000500050026xCitations: 7 1 Contribution from Crops Research Division, ARS, USDA, University of Arizona Cotton Research Center, Tempe, Arizona. Journal paper No. 1000 of the Arizona Agricultural Experiment Station. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Citing Literature Volume5, Issue5September–October 1965Pages 460-464 RelatedInformation

A Dominant Gene for Male‐Sterility in Upland Cotton1

Crop ScienceVolume 4, Issue 5 cropsci1964.0011183X000400050035x p. 548-549 Article A Dominant Gene for Male-Sterility in Upland Cotton1 D. C. Allison, D. C. AllisonSearch for more papers by this authorW. D. Fisher, W. D. Fisher Formerly Assistant Plant Breeder (now Assistant Professor of Biology, Monmouth College, Monmouth, Illinois) and Plant Breeder, respectively, at the University of Arizona Cotton Research Center, Tempe, Arizona.Search for more papers by this author D. C. Allison, D. C. AllisonSearch for more papers by this authorW. D. Fisher, W. D. Fisher Formerly Assistant Plant Breeder (now Assistant Professor of Biology, Monmouth College, Monmouth, Illinois) and Plant Breeder, respectively, at the University of Arizona Cotton Research Center, Tempe, Arizona.Search for more papers by this author First published: 01 September 1964 https://doi.org/10.2135/cropsci1964.0011183X000400050035xCitations: 9 1 Contribution from the Plant Breeding Department, University of Arizona, Tucson, Arizona. Published with the approval of the Director of the Arizona Agricultural Experiment Station as Journal article No. 875. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article.Citing Literature Volume4, Issue5September–October 1964Pages 548-549 RelatedInformation

The Cotton Leaf Perforator and Its Control in Arizona1

The cotton leaf perforator, Bucculatrix thurberiella Busck, is a serious pest of cotton in Arizona, Development from egg to adult averaged 18 days. Certain cultural practices intensified cotton leaf perforator injury. Predators, such as Orius nymphs, Chrysopa larvae and adults of Collops and Hippodamia were observed feeding on cotton leaf perforator larvae in the field. Adults of Geocoris, Sinea , and Zelus , and adults and nymphs of Nobis were observed feeding on cotton leaf perforator larvae in The laboratory only. Chemical control investigations were conducted in the Yuma and Salt River Valley areas. At Yuma spray applications of insecticides were more effective than dusts. The following insecticides were found to be effective: methyl parathion, toxaphene-DDT combinations, Dilan (1 part of 1,1-his( p -chlorophenyl)-2-nitropropane plus 2 parts of 1,1-his( p -chlorophenyl)-2-nitrohutane), malathion, Strobane® (terpenes chlorinated to 66% chlorine content), dimethoate, SD 4402 (1,3,4,5,6,7,8,8 octachloro- 3a,4, 7,7a-tetrahydro-4, 7-methanophthalan), Sevin® (1- naphthyl methylcarbamate), Dibrom® (1, 2-dihromo-2,2-diehloroethyl dimethyl phosphate) with DDT, Dipterex® (dimethyl (2,2,2-trichloro-1-hydroxycthyl) phosphonate with DDT, Trithion® (S-( p -chlorophenylthio) methyl O,O -diethyl phosphorodithioate) with DDT, Chlorthion® ( O -(3-chloro-4-mitrophenyl) O,O -dim ethyl phosphorothioate), and a mixture of methyl parathion with endrin.

Chemical Defoliation of Cotton: V. Effects of Premature Defoliant and Desiccant Treatments on Boll Components, Fiber Properties, Germination, and Yield of Cotton1

SynopsisChemical defoliant and desiccant treatments of cotton in Arizona when bolls were less than 35 days of age adversely affected boll components, fiber length, percent germination, and yield. No damage was found when bolls were 35 or more days of age.

Weather in Relation to Yield of American‐Egyptian Cotton in Arizona1

Weather in Relation to Yield of American‐Egyptian Cotton in Arizona¹

Hemipterous Insects of Cotton in Arizona: Their Economic Importance and Control

For years much of the cotton produced in Arizona has been characterized by excessive “spotting” or “staining” of the lint. So pronounced is this that in some of the more important cotton-growing sections an average loss of about $5 per bale is experienced. This is due to the lowering of grade on account of the “off-color” classification, which establishes a lower market value. While this condition has been recognized, the actual causative factors have until recently been unknown. The severe staining has been variously attributed to a number of agencies, among which were local climatic conditions, soil variations and physiological causes in the cotton plants themselves.