Results 51 to 60 of about 664 (163)

Brassica biofumigation cover crops in US agroecosystems: A systematic review of research from 2014 to 2024

open access: yesAgronomy Journal, Volume 118, Issue 3, May/June 2026.
Abstract Biofumigation with brassica cover crops (BCCs) is gaining momentum in the United States as an ecologically sound alternative to chemical pest suppression in agricultural systems. This review critically evaluates the impacts of Brassica species on soil health, weed suppression, disease mitigation, and control of plant‐parasitic nematodes (PPNs)
Karthik Karuppanan   +4 more
wiley   +1 more source

Glyphosate resistance and EPSPS gene amplification confirmed in a waterhemp (Amaranthus tuberculatus) biotype from Connecticut

open access: yesAgrosystems, Geosciences & Environment
Waterhemp (Amaranthus tuberculatus) is an economically important broadleaf weed that threatens corn and soybean production across the United States.
Jatinder S. Aulakh   +4 more
doaj   +1 more source

Fitness Cost Associated With Enhanced EPSPS Gene Copy Number and Glyphosate Resistance in an Amaranthus tuberculatus Population

open access: yesFrontiers in Plant Science, 2021
The evolution of resistance to pesticides in agricultural systems provides an opportunity to study the fitness costs and benefits of novel adaptive traits.
Helen M. Cockerton   +9 more
doaj   +1 more source

Common Waterhemp Growth and Fecundity as Influenced by Emergence Date and Competing Crop

open access: yesAgronomy Journal, 2007
Common waterhemp (Amarathus rudis Sauer) is a frequent weed in glyphosate‐resistant (GR) crops in the midwestern USA due, in part, to the delayed emergence of its seedlings. Variable waterhemp emergence was simulated by transplanting seedlings into both corn (Zea mays L.) and soybean [Glycine max (L.) Merr.] and bare plot areas at differing crop growth
Uscanga-Mortera, E.   +3 more
openaire   +3 more sources

Development and Preliminary Evaluation of a Machine Vision‐Guided Smart Sprayer Prototype Toward Precision Vegetable Weeding

open access: yesJournal of Field Robotics, Volume 43, Issue 3, Page 1973-1987, May 2026.
ABSTRACT Sustainable weed management necessitates herbicide‐reduced, precision weed control. Recent advancements in machine vision and artificial intelligence (AI) for weed recognition and localization have created new opportunities for high‐precision weeding. Although blanket spraying systems are widely used for weed removal, machine vision‐guided, AI‐
Boyang Deng, Yuzhen Lu, Daniel Brainard
wiley   +1 more source

The evolution of separate sexes in waterhemp is associated with surprising chromosomal diversity and complexity

open access: yesPLOS Biology
The evolution of separate sexes is hypothesized to occur through distinct pathways involving few large-effect or many small-effect alleles. However, we lack empirical evidence for how these different genetic architectures shape the transition from quantitative variation in sex expression to distinct male and female phenotypes.
Julia M. Kreiner   +8 more
openaire   +3 more sources

Interactions between glyphosate, Fusarium infection of waterhemp, and soil microorganisms [PDF]

open access: yes, 2018
In recent years, an increasing number of weed populations have been characterized with resistance to the herbicide glyphosate. In particular, waterhemp has evolved glyphosate resistance (GR) across numerous soybean fields in Missouri. Therefore research is needed to determine best management practices for GR weed biotypes.
openaire   +2 more sources

Targeted herbicide cost requirements for adoption of See & Spray technology and ways to improve area sprayed

open access: yesAgrosystems, Geosciences &Environment, Volume 9, Issue 1, March 2026.
Abstract Adopting targeted herbicide applications creates a dynamic problem for producers when considering the economic viability of See & Spray. Research was conducted to estimate how weed area, area sprayed, nozzle selection, sensitivity settings, crops, and regions influence potential herbicide savings with the John Deere See & Spray technology ...
Tristen H. Avent   +4 more
wiley   +1 more source

Comparison of a diflufenican-containing premixture to current commercial standards for residual Palmer amaranth (Amaranthus palmeri) and waterhemp (Amaranthus tuberculatus) control

open access: yesWeed Technology
With Palmer amaranth and waterhemp evolving resistance to nine and six different sites of action (SOAs) globally, soybean producers continue to search for new options to control these problematic weeds.
Matthew C. Woolard   +6 more
doaj   +1 more source

Quantifying resistance to very-long-chain fatty acid-inhibiting herbicides in Amaranthus tuberculatus using a soilless assay.

open access: yesPLoS ONE, 2023
Resistance to preemergence (PRE) soil-applied herbicides, such as inhibitors of very-long-chain fatty acid (VLCFA) elongases, was documented in two waterhemp [Amaranthus tuberculatus (Moq.) J.D. Sauer] populations (SIR and CHR) from Illinois, USA.
Dylan R Kerr   +3 more
doaj   +1 more source

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