Download or read book Pesticides Used on Walnuts in California written by Siqi Fan and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Walnuts are an important specialty crop in California. In 2010, they reached a production of 503,000 tons which accounted for 99% of national production, and created profits over one billion dollars statewide. The major regions growing walnuts in California include the Sacramento Basin, San Joaquin Basin and Tulare Lake Basin. To maximize crop production, a large amount of pesticides was applied to control pests: The amount of active ingredient (AI) used in pesticide products exceeded 1000 tons annually in 1995-2009, which could have posed potential pollution to surface water. This study looked into both pesticide use and its potential impact on surface water from 1995 to 2009 on California walnuts, focusing on the pesticide categories of fungicides, insecticides and herbicides. A pesticide risk evaluation model, Pesticide Use Risk Evaluation (PURE), was applied in this study to quantitatively analyze potential impact of pesticide use on surface water. Results showed that among the three main basins, the Sacramento Basin had the highest fungicide risk intensity on surface water (annual average value: 978.25 R/ha, 42% and 358% higher than San Joaquin and Tulare Lake), due to a heavy use of copper hydroxide and maneb. San Joaquin had the highest insecticide risk intensity (973.73 R/ha, 33% and 56% higher than the Sacramento Basin and Tulare Lake) resulting mainly from chlorpyrifos, azinphos-methyl, chloropicrin, and malathion use. Herbicide showed a consistent low risk intensity (

Download or read book How Effective are Voluntary Agricultural Pesticide Use Reduction Programs written by Don Villarejo and published by . This book was released on 1998 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Integrated Pest Management for Walnuts written by and published by UCANR Publications. This book was released on 2003 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assessing the Economic Feasibility of Low Risk Pest Management Strategies in Walnuts written by Kimberly Paige Steinmann and published by ProQuest. This book was released on 2008 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many organophosphate and pyrethroid insecticides currently used by California walnut growers have been linked to negative environmental or human health impacts, increasing the probability of use restrictions and phase-outs. This thesis assessed the acceptability of alternative reduced-risk strategies by comparing their costs to those of pest management programs currently in use among San Joaquin County walnut growers. Data from the California Department of Pesticide Regulation's legally mandated Pesticide Use Reports database were used to identify current pest management strategies practiced by walnut growers from 2002 to 2004. While many factors other than cost influence growers' pest management choices, the results of this project conclude that alternative strategies can be cost-competitive with conventional approaches, depending on the pest pressure and savings due to reductions in secondary pest outbreaks.

Download or read book Are Voluntary Agricultural Pesticide Use Reduction Programs Effective written by Don Villarejo and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The California Walnut written by California Walnut Growers Association and published by . This book was released on 1919 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hooked on Poison written by Susan E. Kegley and published by . This book was released on 2000 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Economic and Environmental Tradeoffs of Pest Management Studies in Walnuts written by Kimberly Paige Steinmann and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Agricultural pesticides have been linked to water quality impairment in California. While lower risk pesticides are available, they are often more expensive, and are thus slow to be adopted by growers. However, even more expensive products can contribute to an economically viable pest management system (PS) if their selectivity enables secondary pests to be biologically controlled by natural enemies, and thus cut grower's costs in secondary pest outbreak control. This dissertation found that while there were strong decreasing trends in overall ground and surface water risk for the entire state from 2000 to 2008 (Ground water: spearman's rho = -0.97, p

Download or read book Managing and Analyzing Pesticide Use Data for Pest Management Environmental Monitoring Public Health and Public Policy written by Minghua Zhang and published by . This book was released on 2018-12 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Order Regulating the Handling of Walnuts Grown in California Oregon and Washington written by and published by . This book was released on 1935 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Walnut Production Manual written by David E. Ramos and published by UCANR Publications. This book was released on 1997 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the only comprehensive guide available covering all aspects of English walnut culture. Applicable worldwide, includes over 50 color photographs, practical considerations on walnut varieties, hedgerow planting and agricultural chemicals

Download or read book Cover Crops for Walnut Orchards written by and published by UCANR Publications. This book was released on 2006 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Control in the Western United States written by J. R. Nechols and published by UCANR Publications. This book was released on 1995-01-01 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Amendment of Order Regulating the Handling of Walnuts Grown in California Oregon and Washington written by and published by . This book was released on 1936 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pests of the Garden and Small Farm written by Mary Louise Flint and published by Univ of California Press. This book was released on 1998 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Authoritative text enables readers to identify pests quickly and to prevent, correct, or live with most common pest problems. 250 color photos, 100 drawings.

Download or read book Integrated Pest Management for Walnuts written by and published by . This book was released on 1982 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Intended for walnut growers and advisors, this publication provides comprehensive guidelines for integrated pest management in walnuts. It includes sections on walnut tree development and growth, pest monitoring, pest identification, and cultural, biological and chemical management methods. Photographs of vertebrate, insect and mite pests, diseases, nematodes and weeds aid in their identification. Lists of common and scientific names of pests, a pictorial key to walnut damage symptoms, and a glossary are useful features.

Download or read book agriculture chemical usage written by and published by DIANE Publishing. This book was released on with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: