東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Exposure and Risk to Non-Target Rece...

Preftakes, Collin James.

Linked to FindBook

Google Book

Amazon

博客來

Exposure and Risk to Non-Target Receptors for Agricultural Spray Drift of Formulation Types and Adjuvants.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Exposure and Risk to Non-Target Receptors for Agricultural Spray Drift of Formulation Types and Adjuvants./
Author:	Preftakes, Collin James.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
Description:	126 p.
Notes:	Source: Dissertation Abstracts International, Volume: 79-01(E), Section: B.
Contained By:	Dissertation Abstracts International79-01B(E).
Subject:	Environmental science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10607295
ISBN:	9780355183016

Exposure and Risk to Non-Target Receptors for Agricultural Spray Drift of Formulation Types and Adjuvants.
Preftakes, Collin James.

Exposure and Risk to Non-Target Receptors for Agricultural Spray Drift of Formulation Types and Adjuvants. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 126 p.

Source: Dissertation Abstracts International, Volume: 79-01(E), Section: B.

Thesis (Ph.D.)--Montana State University, 2017.

Agricultural applications of crop protection products can have negative economic and ecological consequences when spray drift occurs. Among the ways to reduce spray drift is to manipulate the physical properties of the spray solution with formulated products and tank additives, but further research is required to better understand their effects. By measuring spray drift under field conditions and using the results to estimate ecological risk, we characterize the effect on drift for two formulation types and two adjuvants. A field study was conducted where off-target ground deposition and droplet size were measured to indicate spray drift for different combinations of the formulations and adjuvants, accounting for environmental conditions. Each treatment combination was also sprayed in a wind tunnel set up to precisely measure droplet spectra so that these could be related to deposition in the field. Finally, an efficacy experiment was conducted to test for tradeoffs between drift reduction and pest control. Results from the field study suggest that as much as 32% drift reduction was achieved by selecting between the tested formulation types, and as much as 62% by incorporating certain spray adjuvants, but this effect depended on the formulation/adjuvant combination. Treatments with smaller droplet sizes had greater drift, and there was no tradeoff between drift reduction and pest control. We assessed ecological risk for terrestrial insects in non-target habitats using a novel approach to estimate insecticide residue on plant surfaces based on ground deposition data from the field study. Exposure concentrations were combined with a cumulative distribution of species sensitivities to statistically represent the risk of toxicity for the active ingredient that was used and the levels of drift that were observed. We found that substantial reductions in the percentage of insect species affected in an off-target area could be achieved by certain formulation types and adjuvants. This work could be useful for developing a classification scheme for formulated products and tank additives based on their potential for reducing spray drift and ecological risk to non-target receptors.

ISBN: 9780355183016Subjects--Topical Terms:

677245
Environmental science.

Exposure and Risk to Non-Target Receptors for Agricultural Spray Drift of Formulation Types and Adjuvants.
LDR:03214nmm a2200313 4500 001 2199554
005 20180613122742.5
008 201008s2017 ||||||||||||||||| ||eng d
020 $a 9780355183016
035 $a (MiAaPQ)AAI10607295
035 $a (MiAaPQ)montana:10558
035 $a AAI10607295
040 $a MiAaPQ $c MiAaPQ
100 1 $a Preftakes, Collin James. $3 3426296
245 1 0 $a Exposure and Risk to Non-Target Receptors for Agricultural Spray Drift of Formulation Types and Adjuvants.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2017
300 $a 126 p.
500 $a Source: Dissertation Abstracts International, Volume: 79-01(E), Section: B.
500 $a Adviser: Robert K.D. Peterson.
502 $a Thesis (Ph.D.)--Montana State University, 2017.
520 $a Agricultural applications of crop protection products can have negative economic and ecological consequences when spray drift occurs. Among the ways to reduce spray drift is to manipulate the physical properties of the spray solution with formulated products and tank additives, but further research is required to better understand their effects. By measuring spray drift under field conditions and using the results to estimate ecological risk, we characterize the effect on drift for two formulation types and two adjuvants. A field study was conducted where off-target ground deposition and droplet size were measured to indicate spray drift for different combinations of the formulations and adjuvants, accounting for environmental conditions. Each treatment combination was also sprayed in a wind tunnel set up to precisely measure droplet spectra so that these could be related to deposition in the field. Finally, an efficacy experiment was conducted to test for tradeoffs between drift reduction and pest control. Results from the field study suggest that as much as 32% drift reduction was achieved by selecting between the tested formulation types, and as much as 62% by incorporating certain spray adjuvants, but this effect depended on the formulation/adjuvant combination. Treatments with smaller droplet sizes had greater drift, and there was no tradeoff between drift reduction and pest control. We assessed ecological risk for terrestrial insects in non-target habitats using a novel approach to estimate insecticide residue on plant surfaces based on ground deposition data from the field study. Exposure concentrations were combined with a cumulative distribution of species sensitivities to statistically represent the risk of toxicity for the active ingredient that was used and the levels of drift that were observed. We found that substantial reductions in the percentage of insect species affected in an off-target area could be achieved by certain formulation types and adjuvants. This work could be useful for developing a classification scheme for formulated products and tank additives based on their potential for reducing spray drift and ecological risk to non-target receptors.
590 $a School code: 0137.
650 4 $a Environmental science. $3 677245
650 4 $a Entomology. $3 615844
650 4 $a Agriculture. $3 518588
690 $a 0768
690 $a 0353
690 $a 0473
710 2 $a Montana State University. $b Land Resources and Environmental Sciences. $3 3341363
773 0 $t Dissertation Abstracts International $g 79-01B(E).
790 $a 0137
791 $a Ph.D.
792 $a 2017
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10607295