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Book ; Online ; E-Book: Crop protection under changing climate

Jabran, Khawar / Florentine, Singarayer / Chauhan, Bhagirath Singh

2020

Author's details	Khawar Jabran, Singarayer Florentine, Bhagirath Singh Chauhan, editor
Keywords	Plant ecology ; Plant anatomy ; Plant development ; Plant physiology ; Plant pathology ; Plant breeding ; Agriculture
Language	English
Size	1 Online-Ressource (x, 204 Seiten)
Publisher	Springer International Publishing
Publishing place	Cham
Publishing country	Switzerland
Document type	Book ; Online ; E-Book
Remark	Zugriff für angemeldete ZB MED-Nutzerinnen und -Nutzer
HBZ-ID	HT020623638
ISBN	978-3-030-46111-9 ; 9783030461102 ; 9783030461126 ; 9783030461133 ; 3-030-46111-4 ; 3030461106 ; 3030461122 ; 3030461130
DOI	10.1007/978-3-030-46111-9
Database	ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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Book ; Online ; E-Book: Biology and management of problematic crop weed species

Chauhan, Bhagirath Singh

2021

Author's details	edited by Bhagirath Singh Chauhan
Keywords	Electronic books
Language	English
Size	1 Online-Ressource (416 Seiten)
Publisher	Elsevier Science & Technology
Publishing place	London ; San Diego, CA ; Cambridge, MA ; Kidlington
Publishing country	Great Britain
Document type	Book ; Online ; E-Book
Note	Description based on publisher supplied metadata and other sources
Remark	Zugriff für angemeldete ZB MED-Nutzerinnen und -Nutzer
HBZ-ID	HT021078366
ISBN	978-0-12-822935-4 ; 9780128229170 ; 0-12-822935-7 ; 0128229179
Database	ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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Book ; Online ; E-Book: Non-chemical weed control

Jabran, Khawar / Chauhan, Bhagirath Singh

2018

Author's details	edited by Khawar Jabran, Bhagirath S. Chauhan
Keywords	Weeds/Control ; Pesticides/Risk mitigation
Subject code	632.5
Language	English
Size	1 Online-Resource (ix, 161 Seiten)
Publisher	Academic Press
Publishing place	London
Publishing country	Great Britain
Document type	Book ; Online ; E-Book
Remark	Zugriff für angemeldete ZB MED-Nutzerinnen und -Nutzer ; Zugriff für angemeldete ZB MED-Nutzerinnen und-Nutzer
HBZ-ID	HT019596655
ISBN	978-0-12-809882-0 ; 9780128098813 ; 0-12-809882-1 ; 0128098813
Database	ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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Article ; Online: The world's first glyphosate-resistant case of Avena fatua L. and Avena sterilis ssp. ludoviciana (Durieu) Gillet & Magne and alternative herbicide options for their control.

Chauhan, Bhagirath Singh

PloS one

2022 Volume 17, Issue 1, Page(s) e0262494

Abstract: Avena fatua and A. ludoviciana (commonly known as wild oats) are the most problematic winter grass species in fallows and winter crops in the northeast region of Australia. A series of experiments were conducted to evaluate the performance of glyphosate ... ...

Abstract	Avena fatua and A. ludoviciana (commonly known as wild oats) are the most problematic winter grass species in fallows and winter crops in the northeast region of Australia. A series of experiments were conducted to evaluate the performance of glyphosate and alternative post-emergence herbicides on A. fatua and A. ludoviciana. This study reports the world's first glyphosate-resistant (GR) biotypes of A. fatua and A. ludoviciana. The glyphosate dose required to kill 50% of the plants (LD50) and to reduce 50% of the biomass (GR50) for the GR biotype of A. fatua was 556 g a.e./ha and 351 g a.e./ha, respectively. These values for A. ludoviciana were 848 g a.e./ha and 289 g a.e./ha. Regardless of the growth stage (3-4 or 6-7 leaf stages), clethodim (120 g a.i./ha), haloxyfop (78 g a.i./ha), pinoxaden (20 g a.i./ha), and propaquizafop (30 g a.i./ha) were the best alternative herbicide options for the control of A. fatua and A. ludoviciana. The efficacy of butroxydim (45 g a.i./ha), clodinafop (120 g a.i./ha), imazamox + imazapyr (36 g a.i./ha), and paraquat (600 g a.i./ha) reduced at the advanced growth stage. Glufosinate (750 g a.i./ha), flamprop (225 g a.i./ha), and pyroxsulam + halauxifen (20 g a.i./ha) did not provide effective control of Avena species. This study identified alternative herbicide options to manage GR biotypes of A. fatua and A. ludoviciana.
MeSH term(s)	Avena/classification ; Avena/drug effects ; Avena/growth & development ; Crops, Agricultural/drug effects ; Crops, Agricultural/growth & development ; Glycine/analogs & derivatives ; Glycine/pharmacology ; Herbicide Resistance ; Herbicides/pharmacology ; Glyphosate
Chemical Substances	Herbicides ; Glycine (TE7660XO1C)
Language	English
Publishing date	2022-01-12
Publishing country	United States
Document type	Journal Article
ZDB-ID	2267670-3
ISSN	1932-6203 ; 1932-6203
ISSN (online)	1932-6203
ISSN	1932-6203
DOI	10.1371/journal.pone.0262494
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Genetic Diversity, Conservation, and Utilization of Plant Genetic Resources.

Salgotra, Romesh Kumar / Chauhan, Bhagirath Singh

Genes

2023 Volume 14, Issue 1

Abstract: Plant genetic resources (PGRs) are the total hereditary material, which includes all the alleles of various genes, present in a crop species and its wild relatives. They are a major resource that humans depend on to increase farming resilience and profit. ...

Abstract	Plant genetic resources (PGRs) are the total hereditary material, which includes all the alleles of various genes, present in a crop species and its wild relatives. They are a major resource that humans depend on to increase farming resilience and profit. Hence, the demand for genetic resources will increase as the world population increases. There is a need to conserve and maintain the genetic diversity of these valuable resources for sustainable food security. Due to environmental changes and genetic erosion, some valuable genetic resources have already become extinct. The landraces, wild relatives, wild species, genetic stock, advanced breeding material, and modern varieties are some of the important plant genetic resources. These diverse resources have contributed to maintaining sustainable biodiversity. New crop varieties with desirable traits have been developed using these resources. Novel genes/alleles linked to the trait of interest are transferred into the commercially cultivated varieties using biotechnological tools. Diversity should be maintained as a genetic resource for the sustainable development of new crop varieties. Additionally, advances in biotechnological tools, such as next-generation sequencing, molecular markers, in vitro culture technology, cryopreservation, and gene banks, help in the precise characterization and conservation of rare and endangered species. Genomic tools help in the identification of quantitative trait loci (QTLs) and novel genes in plants that can be transferred through marker-assisted selection and marker-assisted backcrossing breeding approaches. This article focuses on the recent development in maintaining the diversity of genetic resources, their conservation, and their sustainable utilization to secure global food security.
MeSH term(s)	Humans ; Animals ; Conservation of Natural Resources ; Crops, Agricultural/genetics ; Plant Breeding ; Endangered Species ; Genetic Variation/genetics
Language	English
Publishing date	2023-01-09
Publishing country	Switzerland
Document type	Journal Article ; Review
ZDB-ID	2527218-4
ISSN	2073-4425 ; 2073-4425
ISSN (online)	2073-4425
ISSN	2073-4425
DOI	10.3390/genes14010174
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Germination Pattern and Seed Longevity of Echinochloa colona (L.) Link in Eastern Australia

Mahajan, Gulshan / Chauhan, Bhagirath Singh

Agronomy. 2023 Aug. 01, v. 13, no. 8

2023

Abstract: Knowledge of the germination pattern and seed longevity of Echinochloa colona under field conditions could play a crucial role in effective weed management. Germination patterns of four populations (B17/12, B17/13, B17/7, and B17/25) of E. colona ... ...

Abstract	Knowledge of the germination pattern and seed longevity of Echinochloa colona under field conditions could play a crucial role in effective weed management. Germination patterns of four populations (B17/12, B17/13, B17/7, and B17/25) of E. colona collected from eastern Australia were studied under field conditions for two years. Each population had multiple cohorts, and peak germination occurred in December 2018. Population B17/12 had a lower dormancy level compared with other populations, as 87% of the seeds germinated in the first cohort. Regression analysis revealed that populations B17/12, B17/13, B17/7, and B17/25 required 2130, 3110, 4320, and 6040 cumulative growing degree days (GDD), respectively, for 80% germination. The last cohorts of each population (100% germination) were observed in February 2020. This suggests that the populations of E. colona had innate dormancy, and a proportion of seeds can germinate in the next season. For the seed persistence study, seed bags of three populations (B17/4, B17/26, and B17/35) were exhumed at different intervals at two locations (Gatton and St George) over 30 months to evaluate decay components. Averaged over locations, burial duration, and burial depth, populations behaved similarly for the seed decay component. After 30 months of seed placement at Gatton, viable seeds at 1, 5, and 15 cm burial depths were 8, 26, and 15%, respectively. However, during the same time period at St George, viable seeds at 1, 5, and 15 cm burial depths were 0, 4, and 3%, respectively. These results implied that E. colona seeds persisted for a longer period (>2 years) in the light-textured soil (Gatton), particularly at the 5 cm burial depth. After 30 months of seed placement at Gatton, seeds decayed faster at 1 cm compared with the 5 cm burial depth. The studies demonstrated that seed persistence and germination patterns of E. colona may vary with different soil and agro-climatic conditions. The results suggest that management strategies should be followed to enable early control of E. colona over a three year period and that restricting reinfestation of weed seeds through seed rains could lead to almost complete control of E. colona in the field.
Keywords	Echinochloa colona ; agronomy ; dormancy ; germination ; regression analysis ; seed longevity ; soil texture ; weed control ; weeds ; Australia
Language	English
Dates of publication	2023-0801
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article ; Online
ZDB-ID	2607043-1
ISSN	2073-4395
ISSN	2073-4395
DOI	10.3390/agronomy13082044
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Glyphosate- and Imazapic-Resistant Chloris virgata Populations in the Southeastern Cropping Region of Australia

Chauhan, Bhagirath Singh / Mahajan, Gulshan

Agronomy. 2023 Jan. 05, v. 13, no. 1

2023

Abstract: Chloris virgata is one of the most problematic summer grass species in southeastern Australia. A total of 40 populations of C. virgata were evaluated in the spring–summer season of 2021–2022 in an open environment at the Gatton Farms of the University of ...

Abstract	Chloris virgata is one of the most problematic summer grass species in southeastern Australia. A total of 40 populations of C. virgata were evaluated in the spring–summer season of 2021–2022 in an open environment at the Gatton Farms of the University of Queensland, Queensland, Australia, for their response to two acetyl-coenzyme-A carboxylase (ACCase) inhibitors (clethodim and haloxyfop), a 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) inhibitor (glyphosate), and an acetolactate synthase (ALS) inhibitor (imazapic). In the first experiment, all populations were screened at the field rate of each herbicide, and the second experiment evaluated the response of seven populations of C. virgata to different rates of glyphosate and imazapic. There were three replications of each treatment and both experiments were repeated over time. None of the populations survived the field rate of clethodim and haloxyfop, possibly suggesting a low exposure of the populations to these herbicides. Individuals in about 90% of populations survived (1% to 100% of individuals surviving) the field rates of glyphosate and individuals in all populations survived (1% to 100%) the imazapic field rate. The dose-response study revealed up to 14- and 5-fold glyphosate resistance in C. virgata populations based on survival and biomass values, respectively, compared to the most susceptible population. Imazapic resistance was up to 2.3- and 16-fold greater than the most susceptible population in terms of survival and biomass values, respectively. The increased cases of glyphosate- and imazapic-resistant C. virgata warrant a nationwide survey and diversified management strategies.
Keywords	3-phosphoshikimate 1-carboxyvinyltransferase ; Chloris virgata ; acetolactate synthase ; acetyl coenzyme A ; agronomy ; at-risk population ; biomass ; clethodim ; dose response ; glyphosate ; glyphosate resistance ; grasses ; haloxyfop ; imazapic ; national surveys ; summer ; Queensland
Language	English
Dates of publication	2023-0105
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article ; Online
ZDB-ID	2607043-1
ISSN	2073-4395
ISSN	2073-4395
DOI	10.3390/agronomy13010173
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Improving wheat productivity through integrated management of Avena ludoviciana

Mahajan, Gulshan / Chauhan, Bhagirath Singh

Agronomy Journal. 2023 , v. 115, no. 3 p.1478-1488

2023

Abstract: In Australia, wheat planting is preferred in June compared with May to kill early cohorts of weeds before planting, particularly in fields with a history of high weed infestation. However, wheat grain yield is often reduced for June planting. This study ... ...

Abstract	In Australia, wheat planting is preferred in June compared with May to kill early cohorts of weeds before planting, particularly in fields with a history of high weed infestation. However, wheat grain yield is often reduced for June planting. This study aimed to investigate the integrated effect of planting dates (May 7, i.e., early‐planted, and June 7, i.e., late‐planted), seeding rates (100 and 200 seeds m⁻²), and weed control treatments (nontreated control, pyroxasulfone 100 g a.i. ha⁻¹, triallate 800 g a.i. ha⁻¹, trifluralin 600 g a.i. ha⁻¹, and prosulfocarb 2000 g a.i. ha⁻¹ + S‐metolachlor 300 g a.i. ha⁻¹) on Avena ludoviciana (Durieu) control and wheat yield. For early‐planted wheat, the pyroxasulfone‐treated plots had a higher yield (5.5 Mg ha⁻¹) at a low seeding rate compared with a high seeding rate (4.7 Mg ha⁻¹). Pyroxasulfone and triallate treatments in early‐planted wheat using a low seeding rate produced a higher yield than each treatment of late‐planted wheat. In late‐planted wheat, varied seeding rates did not influence grain yield, irrespective of weed control treatments. Pyroxasulfone and triallate treatments in early‐planted wheat at a low seeding rate gave similar yields, and yield levels in these treatments were higher than trifluralin and prosulfocarb + S‐metolachlor treatments. A high seeding rate in early‐planted wheat resulted in an increased grain yield by 42%, 27%, and 28% in nontreated, trifluralin, and prosulfocarb + S‐metolachlor, respectively, compared with a low seeding rate. Weed biomass and weed seed production were lower in late‐planted wheat than in early‐planted wheat. Pyroxasulfone‐ and triallate‐treated plots accrued lower weed biomass and weed seed production than the nontreated plots. Averaged over weed control treatments, weed seed production was highest (2700 seeds m⁻²) in the early crop planted at a low seeding rate, which was reduced by 42% with late planting using a similar seeding rate. Averaged over weed control treatments, a high seeding rate in early‐ and late‐planted crops reduced weed seed production by 68% and 48%, respectively, compared with a low seeding rate. These results suggest that pyroxasulfone in early‐planted wheat can control A. ludoviciana effectively, limit weed seed production similar to late‐planted wheat, and prove a profitable option due to improved productivity compared with late‐planted wheat.
Keywords	Avena sterilis ; agronomy ; biomass ; grain yield ; metolachlor ; pyroxasulfone ; triallate ; trifluralin ; weed control ; weeds ; wheat ; Australia
Language	English
Dates of publication	2023-05
Size	p. 1478-1488.
Publishing place	John Wiley & Sons, Ltd
Document type	Article ; Online
Note	JOURNAL ARTICLE
ZDB-ID	410332-4
ISSN	1435-0645 ; 0002-1962
ISSN (online)	1435-0645
ISSN	0002-1962
DOI	10.1002/agj2.21251
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Seedbank persistence of four summer grass weed species in the northeast cropping region of Australia.

Chauhan, Bhagirath Singh / Manalil, Sudheesh

PloS one

2022 Volume 17, Issue 1, Page(s) e0262288

Abstract: Summer grass weed species are a particular problem in the northeast cropping region of Australia because they are prolific seeders and favor no-till systems. Information on weed seed persistence levels can be used for the development of effective and ... ...

Abstract	Summer grass weed species are a particular problem in the northeast cropping region of Australia because they are prolific seeders and favor no-till systems. Information on weed seed persistence levels can be used for the development of effective and sustainable integrated weed management programs. A field study was conducted over 42 months to evaluate the seedbank persistence of Chloris truncata, C. virgata, Dactyloctenium radulans, and Urochloa panicoides as affected by burial depth (0, 2, and 10 cm). Regardless of species, buried seeds persisted longer than surface seeds and there was no difference in seed persistence between 2 and 10 cm depths. Surface seeds of C. truncata depleted completely in 12 months and buried seeds in 24 months. Similarly, C. virgata seeds placed on the soil surface depleted in 12 months. Buried seeds of this species took 18 months to completely deplete, suggesting that C. truncata seeds persist longer than C. virgata seeds. Surface seeds of D. radulans took 36 months to completely deplete, whereas about 7% of buried seeds were still viable at 42 months. U. panicoides took 24 and 42 months to completely exhaust the surface and buried seeds, respectively. These results suggest that leaving seeds on the soil surface will result in a more rapid depletion of the seedbank. Information on seed persistence will help to manage these weeds using strategic tillage operations.
MeSH term(s)	Australia ; Crops, Agricultural/growth & development ; Germination ; Plant Weeds/growth & development ; Salinity ; Seasons ; Seed Bank/statistics & numerical data ; Seeds/growth & development ; Soil/chemistry ; Temperature ; Weed Control/methods
Chemical Substances	Soil
Language	English
Publishing date	2022-01-04
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2267670-3
ISSN	1932-6203 ; 1932-6203
ISSN (online)	1932-6203
ISSN	1932-6203
DOI	10.1371/journal.pone.0262288
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Glyphosate Efficacy in

Mahajan, Gulshan / Chauhan, Bhagirath Singh

Plants (Basel, Switzerland)

2022 Volume 11, Issue 23

Abstract: Glyphosate alone or a tank mixture of glyphosate and 2,4-D is commonly used for broad-spectrum weed control under fallow conditions in Australia. Air temperature or mixing glyphosate with 2,4-D, may influence the efficacy of glyphosate on feather ... ...

Abstract	Glyphosate alone or a tank mixture of glyphosate and 2,4-D is commonly used for broad-spectrum weed control under fallow conditions in Australia. Air temperature or mixing glyphosate with 2,4-D, may influence the efficacy of glyphosate on feather fingergrass (
Language	English
Publishing date	2022-11-22
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2704341-1
ISSN	2223-7747
ISSN	2223-7747
DOI	10.3390/plants11233190
Database	MEDical Literature Analysis and Retrieval System OnLINE

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