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Integrating Cover Crops and Herbicid...

Kumari, Annu,

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Integrating Cover Crops and Herbicides for Weed Control in Soybean and Cotton /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Integrating Cover Crops and Herbicides for Weed Control in Soybean and Cotton // Annu Kumari.
Author:	Kumari, Annu,
Description:	1 electronic resource (134 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
Contained By:	Dissertations Abstracts International86-03B.
Subject:	Agronomy. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31345431
ISBN:	9798384216278

Integrating Cover Crops and Herbicides for Weed Control in Soybean and Cotton /
Kumari, Annu,

Integrating Cover Crops and Herbicides for Weed Control in Soybean and Cotton /Annu Kumari. - 1 electronic resource (134 pages)

Source: Dissertations Abstracts International, Volume: 86-03, Section: B.

In mid-South, southeastern, and northeast United States soybean production regions, the evolution of herbicide-resistant weeds has become a significant management challenge for growers. The issue of rising herbicide costs for managing herbicide-resistant weeds is also a growing concern, leading to the utilization of cover crops as an integrated weed management strategy for addressing these challenges. Field experiments were conducted at two locations in Alabama in 2022 to evaluate winter cereal cover crops including a mixture, and herbicide system integration in soybean. Treatments included five cover crops: oats, cereal rye, crimson clover, radish, and a cover crop mixture. Cover crops were evaluated for their weed-suppressive characteristics compared to a winter fallow treatment. Additionally, four herbicide treatments were applied: a pre-emergence (PRE) herbicide, a post-emergence (POST) herbicide, PRE plus POST herbicides, and a non-treated (NT) check. The PRE herbicide was S-metolachlor, the POST treatment contained a mixture of dicamba and glyphosate. The PRE plus POST system contained the PRE application followed by POST application. Our results show that cereal rye and the cover crop mixture provided weed biomass reduction compared to all cover crop treatments across both locations. Furthermore, we observed greater soybean yield following the cereal rye cover crop than the winter fallow treatment at one location. POST and PRE+POST herbicide treatment resulted in greater weed biomass reduction and improved soybean yield than the PRE herbicide treatment alone and NT check at both locations.A field study conducted in Alabama at three locations from autumn 2021 through the crop harvest in 2022 aimed to evaluate the combined effect of cover crop residue and herbicides for weed control and improved cotton lint yield. The experiment was conducted in split plot design with main plots consisting of six cover crop treatments: cereal rye, crimson clover, oats, radish, cover crop mixture, and winter fallow. The subplots included four herbicide treatments: 1) PRE, pendimethalin + fomesafen, 2) POST, dicamba + glyphosate + S-metolachlor, 3) PRE followed by POST, and 4) NT check. Cover crops, excluding radish, exhibited greater weed biomass reduction than winter fallow with corresponding herbicide treatments of either PRE, POST, or PRE+POST as compared to control (winter fallow and NT check). Considering PRE+POST treatment, cereal rye, crimson clover, oats, and cover crop mixture provided >95% weed biomass reduction as compared to control. Cereal rye outperformed and showing higher weed biomass reduction than radish relative to control. PRE+POST herbicide treatment resulted in greater lint yield than other treatments. Cereal rye resulted in a greater lint yield than winter fallow at one out to three locations. In conclusion, integrating herbicides along with the incorporation of high residue cover crops such as cereal rye, is an effective weed management strategy to control troublesome weeds.A greenhouse experiment was conducted to evaluate the germination and growth response of troublesome southeastern weeds to various cereal rye residue levels. Trays having Palmer amaranth, sicklepod, ivyleaf morningglory, and large crabgrass seeds mixed with organic garden soil were covered uniformly by four different biomass of cereal rye residue. The following field experiment was conducted at two locations in Alabama in a split-plot design, with the main plot factor being four seeding rates of cereal rye to obtain various cereal rye biomass.

English

ISBN: 9798384216278Subjects--Topical Terms:

2122783
Agronomy.

Integrating Cover Crops and Herbicides for Weed Control in Soybean and Cotton /
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520 $a In mid-South, southeastern, and northeast United States soybean production regions, the evolution of herbicide-resistant weeds has become a significant management challenge for growers. The issue of rising herbicide costs for managing herbicide-resistant weeds is also a growing concern, leading to the utilization of cover crops as an integrated weed management strategy for addressing these challenges. Field experiments were conducted at two locations in Alabama in 2022 to evaluate winter cereal cover crops including a mixture, and herbicide system integration in soybean. Treatments included five cover crops: oats, cereal rye, crimson clover, radish, and a cover crop mixture. Cover crops were evaluated for their weed-suppressive characteristics compared to a winter fallow treatment. Additionally, four herbicide treatments were applied: a pre-emergence (PRE) herbicide, a post-emergence (POST) herbicide, PRE plus POST herbicides, and a non-treated (NT) check. The PRE herbicide was S-metolachlor, the POST treatment contained a mixture of dicamba and glyphosate. The PRE plus POST system contained the PRE application followed by POST application. Our results show that cereal rye and the cover crop mixture provided weed biomass reduction compared to all cover crop treatments across both locations. Furthermore, we observed greater soybean yield following the cereal rye cover crop than the winter fallow treatment at one location. POST and PRE+POST herbicide treatment resulted in greater weed biomass reduction and improved soybean yield than the PRE herbicide treatment alone and NT check at both locations.A field study conducted in Alabama at three locations from autumn 2021 through the crop harvest in 2022 aimed to evaluate the combined effect of cover crop residue and herbicides for weed control and improved cotton lint yield. The experiment was conducted in split plot design with main plots consisting of six cover crop treatments: cereal rye, crimson clover, oats, radish, cover crop mixture, and winter fallow. The subplots included four herbicide treatments: 1) PRE, pendimethalin + fomesafen, 2) POST, dicamba + glyphosate + S-metolachlor, 3) PRE followed by POST, and 4) NT check. Cover crops, excluding radish, exhibited greater weed biomass reduction than winter fallow with corresponding herbicide treatments of either PRE, POST, or PRE+POST as compared to control (winter fallow and NT check). Considering PRE+POST treatment, cereal rye, crimson clover, oats, and cover crop mixture provided >95% weed biomass reduction as compared to control. Cereal rye outperformed and showing higher weed biomass reduction than radish relative to control. PRE+POST herbicide treatment resulted in greater lint yield than other treatments. Cereal rye resulted in a greater lint yield than winter fallow at one out to three locations. In conclusion, integrating herbicides along with the incorporation of high residue cover crops such as cereal rye, is an effective weed management strategy to control troublesome weeds.A greenhouse experiment was conducted to evaluate the germination and growth response of troublesome southeastern weeds to various cereal rye residue levels. Trays having Palmer amaranth, sicklepod, ivyleaf morningglory, and large crabgrass seeds mixed with organic garden soil were covered uniformly by four different biomass of cereal rye residue. The following field experiment was conducted at two locations in Alabama in a split-plot design, with the main plot factor being four seeding rates of cereal rye to obtain various cereal rye biomass.
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650 4 $a Agricultural production. $3 3559355
650 4 $a Cotton. $3 865960
650 4 $a Soil erosion. $3 602940
650 4 $a Crops. $3 672677
650 4 $a Grain. $3 662330
650 4 $a Winter. $3 603950
650 4 $a Crop residues. $3 2107270
650 4 $a Biomass. $3 1013462
650 4 $a Nitrogen. $3 1314426
650 4 $a Agriculture. $3 518588
650 4 $a Weeds. $3 544957
650 4 $a Water conservation. $3 586857
650 4 $a Soil sciences. $3 2122699
650 4 $a Herbicides. $3 544974
650 4 $a Nutrients. $3 3562665
650 4 $a Legumes. $3 633148
650 4 $a Agricultural chemistry. $3 523947
650 4 $a Organic chemistry. $3 523952
650 4 $a Grasses. $3 524890
650 4 $a Water resources management. $3 794747
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710 2 $a Auburn University. $e degree granting institution. $3 3765916
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773 0 $t Dissertations Abstracts International $g 86-03B.
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791 $a Ph.D.
792 $a 2024
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