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Implications of Cereal Rye Cover Cro...

Nunes, Jose Junior,

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Implications of Cereal Rye Cover Crop Adoption for Amaranthus Spp. Management in Soybean Production /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Implications of Cereal Rye Cover Crop Adoption for Amaranthus Spp. Management in Soybean Production // Jose Junior Nunes.
Author:	Nunes, Jose Junior,
Description:	1 electronic resource (185 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 85-09, Section: B.
Contained By:	Dissertations Abstracts International85-09B.
Subject:	Agronomy. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31139878
ISBN:	9798381968835

Implications of Cereal Rye Cover Crop Adoption for Amaranthus Spp. Management in Soybean Production /
Nunes, Jose Junior,

Implications of Cereal Rye Cover Crop Adoption for Amaranthus Spp. Management in Soybean Production /Jose Junior Nunes. - 1 electronic resource (185 pages)

Source: Dissertations Abstracts International, Volume: 85-09, Section: B.

Cereal rye (Secale cereale L.) cover crop has triggered the interest of soybean producers as an integrated tool for waterhemp (Amaranthus tuberculatus [Moq.] Sauer) and Palmer amaranth (Amaranthus palmeri S. Watson) management. Amaranthus spp. pose significant challenges in soybean production regions across the U.S., as they have continually evolved resistance to major postemergence (POST) herbicides commonly used in weed management programs in soybean. The selection of Amaranthus spp. populations resistant to POST herbicides has favored the adoption of preemergence (PRE) herbicides as effective options for early-season Amaranthus spp. control. Understanding how cereal rye can be effectively integrated with PRE herbicides for Amaranthus spp. management in soybean production is fundamental for the success of this practice. Cereal rye biomass production is the most crucial component when cover cropping for weed suppression since it directly impacts cereal rye management strategies, Amaranthus spp. recruitment, and soybean production. Timely cereal rye planting and termination times dictate biomass production by the cover crop. For instance, delaying cereal rye termination until soybean planting (a strategy known as planting green) can effectively optimize biomass production. The increase in cereal rye biomass directly reduces Amaranthus spp. recruitment due to the lower soil temperature fluctuation caused by the cover crop mulch. Yet, the increase in cereal rye biomass also impacts the fate of PRE herbicides by reducing the number of spray droplets that reach the soil during PRE application and lowering herbicide concentration in the soil following application. Nonetheless, there is no evidence that the interception of PRE herbicides by the cereal rye biomass can reduce residual Amaranthus spp. control when cereal rye and PRE herbicides are integrated. Cereal rye biomass can also impact soybean establishment and yield. The thick layer of crop residue from high levels of cereal rye biomass can challenge proper soybean seed placement during planting, particularly under dry weather conditions. The improper seed-to-soil contact can reduce the final soybean population to levels below what the crop can compensate for stand losses, leading to yield reduction. Cereal rye is an effective tool for integrated Amaranthus spp. management programs in soybean production. Nonetheless, understanding the implications of cereal rye biomass on the cropping system is fundamental for farmers to optimize the benefits of cover cropping without facing losses in soybean yield.

English

ISBN: 9798381968835Subjects--Topical Terms:

2122783
Agronomy.
Subjects--Index Terms:

Herbicide fate in the soil

Implications of Cereal Rye Cover Crop Adoption for Amaranthus Spp. Management in Soybean Production /
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245 1 0 $a Implications of Cereal Rye Cover Crop Adoption for Amaranthus Spp. Management in Soybean Production / $c Jose Junior Nunes.
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300 $a 1 electronic resource (185 pages)
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500 $a Source: Dissertations Abstracts International, Volume: 85-09, Section: B.
500 $a Advisors: Werle, Rodrigo Committee members: Conley, Shawn P.; Huark, Matthew D.; Smith, Damon.
502 $b Ph.D. $c The University of Wisconsin - Madison $d 2024.
520 $a Cereal rye (Secale cereale L.) cover crop has triggered the interest of soybean producers as an integrated tool for waterhemp (Amaranthus tuberculatus [Moq.] Sauer) and Palmer amaranth (Amaranthus palmeri S. Watson) management. Amaranthus spp. pose significant challenges in soybean production regions across the U.S., as they have continually evolved resistance to major postemergence (POST) herbicides commonly used in weed management programs in soybean. The selection of Amaranthus spp. populations resistant to POST herbicides has favored the adoption of preemergence (PRE) herbicides as effective options for early-season Amaranthus spp. control. Understanding how cereal rye can be effectively integrated with PRE herbicides for Amaranthus spp. management in soybean production is fundamental for the success of this practice. Cereal rye biomass production is the most crucial component when cover cropping for weed suppression since it directly impacts cereal rye management strategies, Amaranthus spp. recruitment, and soybean production. Timely cereal rye planting and termination times dictate biomass production by the cover crop. For instance, delaying cereal rye termination until soybean planting (a strategy known as planting green) can effectively optimize biomass production. The increase in cereal rye biomass directly reduces Amaranthus spp. recruitment due to the lower soil temperature fluctuation caused by the cover crop mulch. Yet, the increase in cereal rye biomass also impacts the fate of PRE herbicides by reducing the number of spray droplets that reach the soil during PRE application and lowering herbicide concentration in the soil following application. Nonetheless, there is no evidence that the interception of PRE herbicides by the cereal rye biomass can reduce residual Amaranthus spp. control when cereal rye and PRE herbicides are integrated. Cereal rye biomass can also impact soybean establishment and yield. The thick layer of crop residue from high levels of cereal rye biomass can challenge proper soybean seed placement during planting, particularly under dry weather conditions. The improper seed-to-soil contact can reduce the final soybean population to levels below what the crop can compensate for stand losses, leading to yield reduction. Cereal rye is an effective tool for integrated Amaranthus spp. management programs in soybean production. Nonetheless, understanding the implications of cereal rye biomass on the cropping system is fundamental for farmers to optimize the benefits of cover cropping without facing losses in soybean yield.
546 $a English
590 $a School code: 0262
650 4 $a Agronomy. $3 2122783
650 4 $a Plant sciences. $3 3173832
650 4 $a Soil sciences. $3 2122699
653 $a Herbicide fate in the soil
653 $a Herbicide resistance
653 $a Palmer amaranth
653 $a Secale cereale
653 $a Waterhemp
653 $a Weed management
690 $a 0285
690 $a 0479
690 $a 0481
710 2 $a The University of Wisconsin - Madison. $b Agronomy. $e degree granting institution. $3 3815805
720 1 $a Werle, Rodrigo $e degree supervisor.
773 0 $t Dissertations Abstracts International $g 85-09B.
790 $a 0262
791 $a Ph.D.
792 $a 2024
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31139878