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Book Synopsis Artificial Diets for Mass Rearing the Corn Earworm (heliothis Zea) by :
Download or read book Artificial Diets for Mass Rearing the Corn Earworm (heliothis Zea) written by and published by . This book was released on 1973 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Corn earworm rearing mechanization by : Alton N. Sparks
Download or read book Corn earworm rearing mechanization written by Alton N. Sparks and published by . This book was released on 1976 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Bulletin written by and published by . This book was released on 1976 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
The practice of growing varieties, lines or hybrids resistant to attack by insects, and their subsequenty effectiveness in reducing pest populations and corresponding crop losses, is well documented for several agricultural crops and pest species. The development of many of these resitant cultivars has resulted from or been facilitated by many years of study of the insect pests, the development of techniques to mass rear the insects, artificially infest the crop species, and screen the germplasm of the species (or their wild relatives) for resistance, and the successful application of appropriate breending procedures for improvement of the resistance characteristic over succeeding cycles or generations of population improvement (Guthrie, 1974, 1980). The basic components necessary to identify or developed germaplasm with resitance, or with higher levels of resistance than present cultivars utilized by farmer/producers, include: (1) A colony of the insect species, which exhibits the vigor and vitality of the damaging pest population within the geographical area that is affected. (2) The capability to efficiently mass culture the species, including the rearing facility, trained personnel, natural, meridic, or defined diets, and rearing procedures and containers. (3) Germaplasm resources that area representative of the genetic variation within the crop and/or its closely related species. (4) Methods for uniform artificial infestation. (5) Methods for assessing resultant damage, or lack of damage, to the plants subjected to deliberate infestation (rating scales to determine classes or categories of resistance or susceptibility). (6) Screening to determine whether adequate levels of resistance exist within suitable agronomic types (equivalent or better than currently grown cultivars), and effective selection/breeding scheme established to improve either the resistance levels or agronomic characteristics of the "improved" materials.
Book Synopsis Techniques for Efficient Mass Rearing and Infestation in Screening for Host Plant Resistance to Corn Earworm, Heliothis Zea by : John A. Mihm
Download or read book Techniques for Efficient Mass Rearing and Infestation in Screening for Host Plant Resistance to Corn Earworm, Heliothis Zea written by John A. Mihm and published by . This book was released on 1982 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The practice of growing varieties, lines or hybrids resistant to attack by insects, and their subsequenty effectiveness in reducing pest populations and corresponding crop losses, is well documented for several agricultural crops and pest species. The development of many of these resitant cultivars has resulted from or been facilitated by many years of study of the insect pests, the development of techniques to mass rear the insects, artificially infest the crop species, and screen the germplasm of the species (or their wild relatives) for resistance, and the successful application of appropriate breending procedures for improvement of the resistance characteristic over succeeding cycles or generations of population improvement (Guthrie, 1974, 1980). The basic components necessary to identify or developed germaplasm with resitance, or with higher levels of resistance than present cultivars utilized by farmer/producers, include: (1) A colony of the insect species, which exhibits the vigor and vitality of the damaging pest population within the geographical area that is affected. (2) The capability to efficiently mass culture the species, including the rearing facility, trained personnel, natural, meridic, or defined diets, and rearing procedures and containers. (3) Germaplasm resources that area representative of the genetic variation within the crop and/or its closely related species. (4) Methods for uniform artificial infestation. (5) Methods for assessing resultant damage, or lack of damage, to the plants subjected to deliberate infestation (rating scales to determine classes or categories of resistance or susceptibility). (6) Screening to determine whether adequate levels of resistance exist within suitable agronomic types (equivalent or better than currently grown cultivars), and effective selection/breeding scheme established to improve either the resistance levels or agronomic characteristics of the "improved" materials.
Download or read book Technical Bulletin written by and published by . This book was released on 1981 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Production Research Report written by and published by . This book was released on 1973 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Corn earworm rearing mechanization by : Alton N. Sparks
Download or read book Corn earworm rearing mechanization written by Alton N. Sparks and published by . This book was released on 1976 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of High Temperatures on Fecundity and Fertility of Six Lepidopterous Pests of Cotton in Arizona by : Robert Eaton Fye
Download or read book Effect of High Temperatures on Fecundity and Fertility of Six Lepidopterous Pests of Cotton in Arizona written by Robert Eaton Fye and published by . This book was released on 1971 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Blending of Machine-stripped Cotton by : Allan K. Stoner
Download or read book Blending of Machine-stripped Cotton written by Allan K. Stoner and published by . This book was released on 1974 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Trade-offs Between Farm Income and Selected Environmental Indicators by : James Kasal
Download or read book Trade-offs Between Farm Income and Selected Environmental Indicators written by James Kasal and published by . This book was released on 1976 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: