Article
Engineering, Environmental
Stephen M. Sharkey, Brent J. Williams, Kimberly M. Parker
Summary: In recent years, there have been increasing reports of off-target herbicide drift causing damage to nontarget vegetation in the U.S., coinciding with the widespread adoption of genetically modified crops. Efforts to reduce herbicide drift have been made, but critical uncertainties remain regarding the physiochemical phenomena driving herbicides into the atmosphere and the atmospheric processes influencing their transport. Resolving these uncertainties will support the development of effective approaches to reduce herbicide drift.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Plant Sciences
Jonas Pereira de Souza Junior, Renato de Mello Prado, Jessica Ferreira Diniz, Victor Hugo de Farias Guedes, Jose Lucas Farias da Silva, Cassiano Garcia Roque, Rita de Cassia Felix Alvarez
Summary: This study aimed to investigate the effects of foliar spraying with different sources of silicon on soybean, cotton, and maize. The results showed that all sources of silicon increased leaf silicon concentration, photosynthetic parameters, and yield. Stabilized potassium silicate was found to be a good alternative to conventional potassium silicate for fertilizing crops. It is recommended to spray silicon at a concentration between 0.6 and 0.8 g L-1 when the leaf silicon content is below a certain threshold.
JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
(2022)
Article
Agronomy
Rustem Ustun, Bulent Uzun
Summary: This study developed a novel herbicide-resistant soybean through the use of EMS mutagen. The mutagen was applied to the soybean seeds, resulting in the selection of a single resistant mutant. The AHAS gene regions of the mutant progeny were analyzed, revealing specific nucleotide changes and amino acid alterations responsible for herbicide resistance.
Article
Agronomy
Tyler Meyeres, Sarah Lancaster, Vipan Kumar, Kraig Roozeboom, Dallas Peterson
Summary: The response of non-DR soybean to dicamba varies depending on the application timing and dosage. Less severe injury occurred when dicamba was applied at the V3 growth stage compared to the R1 or R3 stages. The greatest yield reduction was observed in Manhattan, KS, in 2018, with a 68% loss following two or three applications of dicamba at 5.6 g a.e. ha(-1), possibly due to drought conditions.
Article
Agronomy
Clay M. Perkins, Thomas C. Mueller, Lawrence E. Steckel
Summary: In cotton and soybean fields in Tennessee, junglerice has become a major weed problem, with glyphosate and clethodim applications failing to control its growth. Research shows that junglerice has developed resistance to glyphosate, with an effective relative resistance factor ranging from 3.1 to 8.5. Additionally, dicamba may contribute to the ineffective control of junglerice in these fields.
Article
Agronomy
Luka Milosevic, O. Adewale Osipitan, Jon E. Scott, Stevan Z. Knezevic
Summary: The widespread use of dicamba in the United States increased off-target movement to susceptible vegetations. However, there is no evidence that ultra-low doses of dicamba enhance soybean growth and yield, regardless of the application timing. Efforts should be made to avoid dicamba drift to susceptible soybean as there is no evidence of enhanced growth and yield with the ultra-low doses.
Article
Plant Sciences
Andersom Milech Einhardt, Lillian Matias Oliveira, Sandro Ferreira, Wagner Luiz Araujo, David Barbosa Medeiros, Alisdair Robert Fernie, Fabricio Avila Rodrigues
Summary: The nutritional status of plants plays a crucial role in soybean resistance against Asian soybean rust (ASR). Nickel (Ni) and glyphosate (Gl) have been reported to have beneficial effects on ASR control. This study investigated the effects of Ni, Gl, and their combination on defense mechanisms and antioxidative metabolism of soybean plants infected by Phakopsora pachyrhizi. The results showed that Ni and Gl significantly reduced the severity of ASR. Ni enhanced defense mechanisms, while Gl had limited impact on host defense responses.
PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY
(2022)
Article
Environmental Sciences
Jailson Vieira Aguilar, Allan de Marcos Lapaz, Carlos Vinicius Sanches, Camila Hatsu Pereira Yoshida, Liliane Santos de Camargos, Enes Furlani-Junior
Summary: The interaction of N, Ni, and 2,4-D can improve cotton yield and content of photosynthetic pigments, especially when N is applied up to 120 kg ha(-1). The application of 2,4-D as a synthetic auxin during the beginning of flowering shows promise in enhancing cotton yield. This end-of-cycle response is linked to the cotton fruiting process's requirement for auxins.
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMINANTS AND AGRICULTURAL WASTES
(2021)
Article
Biochemistry & Molecular Biology
Ran Li, Yong-Jun Zhang, Xi-Yue Ma, Song-Ke Li, Steven J. J. Klosterman, Jie-Yin Chen, Krishna V. V. Subbarao, Xiao-Feng Dai
Summary: Verticillium wilt, caused by Verticillium dahliae, is a major cause of yield losses in cotton. Despite this, current cultivars of cotton remain highly susceptible to Verticillium wilt. To better understand the genetic basis for resistance, the genome of a wilt-resistant cotton cultivar, Zhongzhimian No. 2, was sequenced and assembled using multiple technologies. This genomic resource will aid in understanding the genetic features related to high yield and resistance to Verticillium wilt.
MOLECULAR PLANT-MICROBE INTERACTIONS
(2023)
Article
Plant Sciences
Gabriel Madoglio Favara, Felipe Franco de Oliveira, Gressa Amanda Chinelato, Armando Bergamin Filho, Jorge Alberto Marques Rezende
Summary: This study provides experimental evidence that soybean plays a role in the epidemiology of Tomato severe rugose virus (ToSRV). It is identified as an efficient asymptomatic host and potential amplifier host for the virus. This finding is important for understanding the transmission mechanism and controlling the disease caused by ToSRV.
Article
Plant Sciences
Yun Lian, Ming Yuan, He Wei, Jinying Li, Binke Ding, Jinshe Wang, Weiguo Lu, Georg Koch
Summary: The soybean cyst nematode (SCN, Heterodera glycines, HG) is a major pest that causes significant damage to soybean production worldwide by impairing root development. Breeding SCN-resistant cultivars is crucial for maintaining harvests without harming the environment. In this study, 12 soybean cultivars were evaluated for their resistance markers and shown to have resistance against multiple SCN races, indicating their potential as donor parents in breeding programs and their contribution to sustainable agriculture management by reducing SCN field populations.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Hayat Khalequzzaman, Hayat Ullah, Sushil Kumar Himanshu, Noor-E-Tajkia Islam, Rujira Tisarum, Suriyan Cha-um, Avishek Datta
Summary: Seed priming can mitigate the deleterious effects of drought stress on cotton. This study assessed the effects of different seed priming materials on cotton under different soil moisture levels and compared their effectiveness in mitigating the detrimental effects of water-deficit stress.
JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
(2023)
Article
Genetics & Heredity
Lindsey C. Perkin, Al Bell, Lori L. Hinze, Charles P-C Suh, Mark A. Arick, Daniel G. Peterson, Joshua A. Udall
Summary: Upland cotton is susceptible to damage by nematodes, causing significant yield losses annually in the US. Traditional methods like crop rotation and nematicides are effective but costly, making the use of resistant cultivars the most efficient and economical approach for managing nematodes in cotton. The genomes of nematode-resistant cotton lines BARBREN-713 and BAR 32-30 may facilitate the development of DNA markers for introducing nematode resistance into commercially valuable cotton lines.
G3-GENES GENOMES GENETICS
(2021)
Article
Agronomy
Camila Jorge Bernabe Ferreira, Alessandro Guerra da Silva, Vivian Ribeiro de Oliveira Preto, Cassio Antonio Tormena, Guilherme Braga Pereira Braz, Matheus de Freitas Souza, Andre Luiz Biscaia Ribeiro da Silva
Summary: This study evaluated the soil physical quality after different crops (maize, sorghum, and millet) in compacted and uncompacted soils under no-tillage system in the Brazilian Cerrado biome, and assessed the performance of soybean in succession. The results indicate that soil compaction affected soil physical quality, particularly in the 0.1-0.2 m layer, resulting in decreased performance of soybean. Cultivating millet as a second-season crop improved soil physical properties and increased soybean yield by approximately 10% compared to maize and sorghum.
Review
Agronomy
Caio A. C. G. Brunharo, Roger Gast, Vipan Kumar, Carol A. Mallory-Smith, Breanne D. Tidemann, Hugh J. Beckie
Summary: HR crops play an important role in integrated weed management in the United States and Canada. However, the widespread cultivation of HR crops has led to the evolution of HR weed populations. Proper stewardship of HR crops can reduce herbicide use and selection pressure on weeds. Careful planning of crop rotation and maximizing crop competition is essential for managing HR weed populations effectively.