Results 61 to 70 of about 83,451 (223)

Hierarchical modelling of species sensitivity distribution: development and application to the case of diatoms exposed to several herbicides [PDF]

open access: yesarXiv, 2015
The Species Sensitivity Distribution (SSD) is a key tool to assess the ecotoxicological threat of contaminant to biodiversity. It predicts safe concentrations for a contaminant in a community. Widely used, this approach suffers from several drawbacks: i)summarizing the sensitivity of each species by a single value entails a loss of valuable information
arxiv  

Herbicidal pollution—pollen damage due to herbicides

open access: yesEnvironmental Pollution (1970), 1977
Abstract The maximisation of agricultural yields has been related to the utilisation of pesticides and, as a result, herbicidal control of weeds has gathered momentum. In spite of the greater selectivity and minimum damage aimed at, herbicides have now been proved to act as ecological narcotics.
openaire   +3 more sources

An intelligent spraying system for weeds in wheat fields based on a dynamic model of droplets impacting wheat leaves

open access: yesFrontiers in Plant Science
IntroductionTargeted herbicide application refers to precise application of herbicides in weed-infested areas according to the location and density of farmland weeds.
Qi Xie   +23 more
doaj   +1 more source

Initial effects of quinclorac on the survival and growth of high biomass tree species

open access: yesAnnals of Forest Research, 2017
Increasingly, short rotation woody crops are being planted for biofuel/biomass production on unused lands or marginal agricultural lands. Many of these plantations occur near agriculture land which is intensively managed including yearly herbicide ...
Joshua P. Adams   +3 more
doaj   +1 more source

Evaluating the Integrated Effect of Herbicide Band Application and Cultivation on Weed Control and Yield of Potato (Solanum tuberosum L.)

open access: yesTulīd va Farāvarī-i Maḥṣūlāt-i Zirā̒ī va Bāghī, 2019
To evaluate the effect of herbicide band application and cultivator on weed control, yield and yield components of potato, an experiment was conducted using factorial arrangement based on randomized complete block design (RCBD) with four replications at ...
M. Taghipoor, A. Ghanbari, M. Rastgoo
doaj  

SpectroGLY: A Low-Cost IoT-Based Ecosystem for the Detection of Glyphosate Residues in Waters [PDF]

open access: yes
Glyphosate contamination in waters is becoming a major health problem that needs to be urgently addressed, as accidental spraying, drift or leakage of this highly water-soluble herbicide can impact aquatic ecosystems. Researchers are increasingly concerned about exposure to glyphosate and the risks its poses to human health, since it may cause ...
arxiv   +1 more source

Effect of nitrogen amount, time and 2,4-D+MCPA application on spatial distribution of lambsquarters seed bank in a corn field

open access: yesپژوهشهای زراعی ایران, 2009
In order to evaluate the effect of nitrogen and herbicide management on distribution patterns of lambsquarters seed bank, an experiment was conducted in a grain corn field at the Agricultural Research Station, Ferdowsi University of Mashhad 2006 growing ...
narges portoosi   +4 more
doaj   +1 more source

Precise Robotic Weed Spot-Spraying for Reduced Herbicide Usage and Improved Environmental Outcomes -- A Real-World Case Study [PDF]

open access: yesarXiv
Precise robotic weed control plays an essential role in precision agriculture. It can help significantly reduce the environmental impact of herbicides while reducing weed management costs for farmers. In this paper, we demonstrate that a custom-designed robotic spot spraying tool based on computer vision and deep learning can significantly reduce ...
arxiv  

Short and Long Range Population Dynamics of the Monarch [PDF]

open access: yesarXiv, 2011
The monarch butterfly annually migrates from central Mexico to southern Canada. During recent decades, its population has been reduced due to human interaction with their habitat. We examine the effect of herbicide usage on the monarch butterfly's population by creating a system of linear and non-linear ordinary differential equations that describe the
arxiv  

The Effect of Herbicides on Soil Microorganisms [PDF]

open access: gold, 1955
Lyman A. Magee, Arthur R. Colmer
openalex   +1 more source

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