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Investigating Novel Herbicide Uses in Specialty Crops, Detecting Pesticide Residues in Cotton, and Evaluating the Benefits of a New Herbicide for Wheat Producers.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Investigating Novel Herbicide Uses in Specialty Crops, Detecting Pesticide Residues in Cotton, and Evaluating the Benefits of a New Herbicide for Wheat Producers./
Author:	Wright, Hannah Elizabeth.
Description:	1 online resource (169 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 84-08, Section: B.
Contained By:	Dissertations Abstracts International84-08B.
Subject:	Agronomy. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29396834click for full text (PQDT)
ISBN:	9798371974280

Investigating Novel Herbicide Uses in Specialty Crops, Detecting Pesticide Residues in Cotton, and Evaluating the Benefits of a New Herbicide for Wheat Producers.
Wright, Hannah Elizabeth.

Investigating Novel Herbicide Uses in Specialty Crops, Detecting Pesticide Residues in Cotton, and Evaluating the Benefits of a New Herbicide for Wheat Producers. - 1 online resource (169 pages)

Source: Dissertations Abstracts International, Volume: 84-08, Section: B.

Thesis (Ph.D.)--University of Georgia, 2022.

Includes bibliographical references

Managing weeds and stewarding pesticides is crucial for agriculture. Research addressing these challenges is essential, thus, 13 experiments and 32 studies were conducted in broccoli, collard, cantaloupe, hemp, cotton, and wheat to assist in farmer sustainability.Glyphosate applied preplant in vegetables facilitates weed-free planting but can cause damage through residual activity. An experiment determined that irrigation of 0.6 cm after application and before transplanting broccoli or collard reduced injury 28 to 48%. Tilling the soil to a depth of 5 cm essentially eliminated glyphosate injury.Cantaloupe, having a Georgia farm gate value of $13 million, lacks weed management options. In search for new tools, S-metolachlor, pendimethalin, acetochlor, and pyroxasulfone were broadcast before transplanting in mulched or non-mulched systems and were applied overtop just after transplanting. Results indicated unacceptable injury for each herbicide and application approach but identified additional research ideas for these herbicides as row-middle applications and increasing the interval between applications and transplanting.Floral hemp has few weed management options currently, other than tillage. Research determined that hemp was tolerant to acetochlor, dithiopyr, flumioxazin, fomesafen, norflurazon, and pendimethalin applied prior to transplanting and acetochlor, clethodim, pendimethalin, and S-metolachlor applied after transplanting. Mechanical transplanting reduced preplant herbicide injury up to 56% when compared to the standard approach of hand transplanting. And whilemulch offers additional weed control, yield was similar in mulched and non-mulched systems.Detecting pesticide residues when products move off-target is a priority for regulators. Field studies using dicamba, 2,4-D, and imazapyr defined how sampling method, herbicide rate, and interval between application and sampling influenced residue detection. The order of importance in detecting residues was 1) shortened interval between application and sample collection and 2) higher drift rates. Sampling technique was less influential.Georgia wheat growers rely on 2,4-D to manage wild radish but crop safety is a concern. A new herbicide, halauxifen-methyl plus florasulam, was compared to 2,4-D for crop tolerance and management of radish when applied to wheat preplant, preemergence, 2-leaf, and at 2-tiller. Halauxifen-methyl plus florasulam controlled wild radish as effectively as 2,4-D while offering a much wider window of application without crop injury concerns.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798371974280Subjects--Topical Terms:

2122783
Agronomy.
Subjects--Index Terms:

Hand transplantIndex Terms--Genre/Form:

542853
Electronic books.

Investigating Novel Herbicide Uses in Specialty Crops, Detecting Pesticide Residues in Cotton, and Evaluating the Benefits of a New Herbicide for Wheat Producers.
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500 $a Source: Dissertations Abstracts International, Volume: 84-08, Section: B.
500 $a Advisor: Culpepper, A. Stanley.
502 $a Thesis (Ph.D.)--University of Georgia, 2022.
504 $a Includes bibliographical references
520 $a Managing weeds and stewarding pesticides is crucial for agriculture. Research addressing these challenges is essential, thus, 13 experiments and 32 studies were conducted in broccoli, collard, cantaloupe, hemp, cotton, and wheat to assist in farmer sustainability.Glyphosate applied preplant in vegetables facilitates weed-free planting but can cause damage through residual activity. An experiment determined that irrigation of 0.6 cm after application and before transplanting broccoli or collard reduced injury 28 to 48%. Tilling the soil to a depth of 5 cm essentially eliminated glyphosate injury.Cantaloupe, having a Georgia farm gate value of $13 million, lacks weed management options. In search for new tools, S-metolachlor, pendimethalin, acetochlor, and pyroxasulfone were broadcast before transplanting in mulched or non-mulched systems and were applied overtop just after transplanting. Results indicated unacceptable injury for each herbicide and application approach but identified additional research ideas for these herbicides as row-middle applications and increasing the interval between applications and transplanting.Floral hemp has few weed management options currently, other than tillage. Research determined that hemp was tolerant to acetochlor, dithiopyr, flumioxazin, fomesafen, norflurazon, and pendimethalin applied prior to transplanting and acetochlor, clethodim, pendimethalin, and S-metolachlor applied after transplanting. Mechanical transplanting reduced preplant herbicide injury up to 56% when compared to the standard approach of hand transplanting. And whilemulch offers additional weed control, yield was similar in mulched and non-mulched systems.Detecting pesticide residues when products move off-target is a priority for regulators. Field studies using dicamba, 2,4-D, and imazapyr defined how sampling method, herbicide rate, and interval between application and sampling influenced residue detection. The order of importance in detecting residues was 1) shortened interval between application and sample collection and 2) higher drift rates. Sampling technique was less influential.Georgia wheat growers rely on 2,4-D to manage wild radish but crop safety is a concern. A new herbicide, halauxifen-methyl plus florasulam, was compared to 2,4-D for crop tolerance and management of radish when applied to wheat preplant, preemergence, 2-leaf, and at 2-tiller. Halauxifen-methyl plus florasulam controlled wild radish as effectively as 2,4-D while offering a much wider window of application without crop injury concerns.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2023
538 $a Mode of access: World Wide Web
650 4 $a Agronomy. $3 2122783
650 4 $a Agriculture. $3 518588
650 4 $a Plant sciences. $3 3173832
653 $a Hand transplant
653 $a Herbicide
653 $a Injury
653 $a Herbicide screening
653 $a Residual herbicide
653 $a Weed control
653 $a Wild radish
653 $a S-metolachlor
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690 $a 0473
690 $a 0479
710 2 $a ProQuest Information and Learning Co. $3 783688
710 2 $a University of Georgia. $b Crop and Soil Sciences - PHD. $3 3703327
773 0 $t Dissertations Abstracts International $g 84-08B.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29396834 $z click for full text (PQDT)