Physiological And Morphological Responses Of Cotton To Damage By The Two Spotted Spider Mite Tetranychus Urticae Koch
Download Physiological And Morphological Responses Of Cotton To Damage By The Two Spotted Spider Mite Tetranychus Urticae Koch full books in PDF, epub, and Kindle. Read online free Physiological And Morphological Responses Of Cotton To Damage By The Two Spotted Spider Mite Tetranychus Urticae Koch ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author | : Amelia A. Reddall |
Publisher | : |
Total Pages | : 416 |
Release | : 2000 |
Genre | : Cotton |
ISBN | : |
Download Physiological and Morphological Responses of Cotton to Damage by the Two Spotted Spider Mite (Tetranychus Urticae, Koch) Book in PDF, Epub and Kindle
Author | : Luis Orellana Jimenez |
Publisher | : |
Total Pages | : 68 |
Release | : 2014 |
Genre | : Cotton |
ISBN | : 9781303782978 |
Download Impact of Early Infestation of Two-spotted Spider Mites (tetranychus Urticae) on Cotton Growth and Yield Book in PDF, Epub and Kindle
Two-spotted spider mites (Tetranychus urticae Koch, 1836) are pests of vegetables, ornamentals, and row crops around the world. Two-spotted spider mites have become an important long-season pests of cotton, causing injury to cotton from an early vegetative stage. In the past eight years, Arkansas cotton acreage treated for spider mites has more than doubled and most of the increase has been attributed to early season infestations. Yield losses of up to 30% have been observed in other studies where spider mite infestation started at third true leaf. Because of the apparent change in this pest's population dynamics, particularly at early stages of crop development, the objective of the present study was to understand the impact of two spotted spider mites on cotton growth and yield. This project focuses on the impact of the timing and duration of infestations. Cotton plots were artificially infested at fourth, sixth true leaf in 2012, and at cotyledon and fourth true leaf during 2013. Both years included three infestation durations (short, medium, and long) at each infestation time. Two-spotted spider mites remaining on cotton at damaging densities for two weeks or more regardless of infestation time, caused significant yield loss. However, spider mites did not cause significant yield loss when environmental conditions did not favor spider mite development for extended periods.
Author | : Stephen Clayton Welter |
Publisher | : |
Total Pages | : 318 |
Release | : 1981 |
Genre | : Almond |
ISBN | : |
Download Contributions to the Pest Management of Spider Mites on Almond Trees Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 862 |
Release | : 1993 |
Genre | : Agriculture |
ISBN | : |
Download Agrindex Book in PDF, Epub and Kindle
Author | : Jessica Vereijssen |
Publisher | : |
Total Pages | : 82 |
Release | : 1997 |
Genre | : |
ISBN | : |
Download Damage-dependent Migration in the Twospotted Spider Mite, Tetranychus Urticae Koch. on Tomato Plants Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 1090 |
Release | : 1982 |
Genre | : Citrus fruits |
ISBN | : |
Download Proceedings of the International Society of Citriculture Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 844 |
Release | : 1969 |
Genre | : |
ISBN | : |
Download Pesticides Documentation Bulletin Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 1732 |
Release | : 1976 |
Genre | : Agriculture |
ISBN | : |
Download Bibliography of Agriculture Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 952 |
Release | : 1997 |
Genre | : Entomology |
ISBN | : |
Download Entomology Abstracts Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2012 |
Genre | : Cotton |
ISBN | : |
Download Impact and Management of Twospotted Spider Mite in Pre-flowering Cotton Book in PDF, Epub and Kindle
Experiments were conducted to determine the impact of twospotted spider mite, Tetranychus urticae Koch, on cotton injury and yield. Artificial infestations were initiated at the three leaf stage of cotton growth and removed after specified durations of infestation. Yields were reduced for durations of infestation 21 days or greater. In a second experiment, the interactions between twospotted spider mite, thrips, at-planting insecticides, and foliar insecticides were studied to determine their impact on cotton yields. Twospotted spider mites and thrips reduced cotton yield. In a third experiment, twospotted spider mites were released from a central point in 0.024 hectare blocks of cotton and injury was recorded at various distances from that point. Injury was clearly visible seven meters from the infestation point within 16-28 days after infestation. Twospotted spider mites caused significant yield losses in cotton in all of these experiments.