Management of Garden Symphylans (Scutigerella Immaculata Newport) with Crop Rotation Tactics and Improved Sampling Methods PDF Download

Author: Jon Umble
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: Jon R. Umble
Publisher:
ISBN:
Category : Symphyla
Languages : en
Pages : 214

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Garden symphylans (Scutigerella immaculata Newport) are increasingly important pests of below-ground parts of over 100 crops in Oregon. The focus of our work was to improve S. immaculata management through 1) development of a bait sampling method, 2) examination of the susceptibility of selected crops to S. immaculata feeding in the field and laboratory and a reanalysis of previously published results, and 3) investigation of the suitability of selected crops and soil for the development of S. immaculata populations in the field and laboratory. Sample size requirements were developed for the bait and soil sampling methods. Estimating densities of 1 to 20 S. immaculata at fixed precision levels required 1.5 times more sample units for the baiting method than the soil method. Sampling recommendations for the baiting method performed well when validated by resampling a large independent data set. The bait sampling method provides an effective reliable alternative to the standard soil sampling method. In the laboratory, as S. immaculata densities increased, dry weight of spinach (Spinacia oleracea L.) and tomato (Lycopersicon esculentum L.) seedlings were significantly reduced from 85 to 89%, whereas corn (Zea mays L.) and potato (Solanum tuberosum L.) dry weight were not reduced. As S. immaculata densities increased in the field, the normalized difference vegetation index (NDVI) of squash (Cucurbita pepo L.) and broccoli (Brassica oleracea L.) crops sharply decreased, while the NDVI of corn and potato crops was only slightly reduced. In reanalysis of previously published data, the stand counts of crops seeded into S. immaculata infested soil appeared to increase as seed size increased. These findings will be used to help develop action thresholds and sample size requirements, and reduce S. immaculata damage. In the laboratory, S. immaculata population growth was significantly greater on spinach than on tomato, sweet corn, potato, or soil alone, and significantly lower on potato than on spinach, corn, tomato, or soil alone. In the field, greater S. immaculata population decreases were observed in potatoes than in sweet corn or clean fallow. These results provide strong evidence that crop rotation may significantly influence S. immaculata population levels.

Author: Donald Comin
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 378

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Author: Norman Johnson
Publisher:
ISBN: 9780357671276
Category :
Languages : en
Pages : 880

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Understand the insect world with BORROR AND DELONG�S INTRODUCTION TO THE STUDY OF INSECTS! Combining current insect identification, insect biology, and insect evolution, this biology text provides you with a comprehensive introduction to the study of insects. Numerous figures, bullets, easily understood diagrams, and numbered lists throughout the text help you grasp the material.

Author: Walter Mahaffee
Publisher:
ISBN:
Category : Hops
Languages : en
Pages :

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Author: Donald Joyce Borror
Publisher: Brooks Cole
ISBN:
Category : Nature
Languages : en
Pages : 904

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This text uses a taxonomic approach to introduce students to the science of entomology. Extensive use of identification keys acquaints students with all the families of insects in the United States and Canada and provides means for students to identify 95% or more of the insects found occurring in North America.

Author: D. V. Alford
Publisher: Academic Press
ISBN: 0123985153
Category : Gardening
Languages : en
Pages : 482

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Ornamental trees, shrubs and flowers have always been extremely popular and in large demand. Whether in gardens or parks, common usage of alpines, bedding plants, cacti, cut flowers, house plants and pot plants, as well as herbaceous plants, ornamental grasses, shrubs and trees makes a definitive volume on their pests of essential value to entomologists and plant scientists. The fully revised and updated second edition of Pests of Ornamental Trees, Shrubs and Flowers follows up the successful previous edition with coverage of many new pests and highly detailed color photographs. The book opens with a review of the main features of insects, mites and other major pest groups. . Each major order and family of pests is considered in turn, with details of their status, host range, world distribution, diagnostic features and biology. Descriptions of the characteristic damage caused are also given. Contains coverage of more than 60 new pests and nearly 90 additional color photographs Discusses principles of pest control of ornamental plants, followed by sections on the various pests

Author: Tom Murray
Publisher: Adventure Publications
ISBN: 9781936571024
Category : Nature
Languages : en
Pages : 0

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This go-to guide will help you identify the most interesting six-legged critters native to the Northeast. Tom Murray shares natural history nuggets and identification tips on over 1,000 species of insects! The book includes hundreds of color photos.

Author: Frederick Vernon Coville
Publisher: Literary Licensing, LLC
ISBN: 9781498144612
Category :
Languages : en
Pages : 138

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This Is A New Release Of The Original 1910 Edition.

Author: Khawar Jabran
Publisher: Academic Press
ISBN: 0128098821
Category : Science
Languages : en
Pages : 174

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Non-Chemical Weed Control is the first book to present an overview of plant crop protection against non-food plants using non-chemical means. Plants growing wild—particularly unwanted plants found in cultivated ground to the exclusion of the desired crop—have been treated with herbicides and chemical treatments in the past. As concern over environmental, food and consumer safety increases, research has turned to alternatives, including the use of cover crops, thermal treatments and biotechnology to reduce and eliminate unwanted plants. This book provides insight into existing and emerging alternative crop protection methods and includes lessons learned from past methodologies. As crop production resources decline while consumer concerns over safety increase, the effective control of weeds is imperative to insure the maximum possible levels of soil, sunlight and nutrients reach the crop plants. - Allows reader to identify the most appropriate solution based on their individual use or case - Provides researchers, students and growers with current concepts regarding the use of modern, environment-friendly weed control techniques - Presents methods of weed management—an important part of integrated weed management in the future - Exploits the knowledge gained from past sustainable weed management efforts