Search

Your search keyword '"Low risk pesticide"' showing total 13 results
Start Over Descriptor "Low risk pesticide"
13 results on '"Low risk pesticide"'

1. Risk mitigation strategy and mechanism analysis of neonicotinoid pesticides on earthworms.

Author

Xu, Bohan, Cui, Weihan, Tao, Li, Yang, Luze, and Zhao, Xingmin

Subjects
VERMICOMPOSTING, THIAMETHOXAM, NEONICOTINOIDS, EARTHWORMS, CHEMICAL templates, AMINO acid residues, NON-target organisms
Abstract

Neonicotinoid insecticides (NNIs) are a new class of widely used insecticides with certain risks to non-target organisms, like earthworms. The gray correlation method was used to calculate the comprehensive risk effect value of acute toxicity (LC 50) and bioaccumulation (log K ow) of NNIs on earthworms. A comprehensive effects three-dimensional quantitative structure–activity relationship (3D-QSAR) model was constructed, using NNIs molecular structures and the comprehensive effect value as the independent and dependent variables, respectively. One of the representatives guadipyr (GUA) was selected as the template molecule for the molecular design and modification. A total of 63 NNIs alternatives were designed with a reduced comprehensive value higher than 10%, and as high as 42%. After screening, 15 NNIs alternatives were screened with decreased acute toxicity to earthworms, bioaccumulation effects and improved functional property. The calculated primary acute risk quotient of earthworms shows that the designed NNIs alternatives have lower earthworm risks (reduction of 70.48–99.99%). Results also found that the electronic, geometric and topological parameters of NNIs are the key descriptors that affect NNIs alternatives' toxicity. The number of hydrophobic interaction amino acid residues in NNIs molecules also contributes to the acute toxicity and the bioaccumulation of NNIs alternatives on earthworms. This study aims to design and screen functionally improved and environmentally friendly NNIs alternatives that have low risk to earthworms and provide theoretical methods and new ideas for the risk control and development of pesticides represented by NNIs. [Display omitted] • The designed neonicotinoid insecticides (NNIs) alternatives have lower earthworm risks. • Electronic, geometric and topological parameters are the key descriptors. • The hydrophobic amino acid residues' number contributes to the NNIs' earthworm risk. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

2. Evaluation of Fiesta and liquid corn gluten meal for pre-emergent control of turfgrass weeds – greenhouse and bare soil trial

Author

Lyons, E., Jordan, K., and Carey, K.

Subjects
Perennial ryegrass, Class 11, Annual report, Low risk pesticide, Dandelion, Guelph Turfgrass Institute, Greenhouse, Lolium perenne, Bare soil, Broadleaf weeds, Seed germination, White clover, Fiesta chelated iron, Shoot growth, phenoxaprop-ethyl, Root growth, Large crabgrass, Plant survival, Corn gluten meal, Plantain
Abstract

The objective of this research project was to determine the effect of Fiesta chelated iron alone and in combination with liquid corn gluten meal on germination and emergence, plant survival, shoot and root growth of turfgrass weeds (large crabgrass, white clover, dandelion, and plantain) as well as turfgrass species (perennial ryegrass). Neudorff North America

Published
2015

3. Efficacy of experimental herbicide products – 2015 fall trial

Author

Lyons, E., Jordan, K., and Carey, K.

Subjects
Perennial ryegrass, Annual report, Low risk pesticide, Dandelion, Guelph Turfgrass Institute, Lolium perenne, Broadleaf weeds, Kentucky bluegrass, Poa pratensis, Post-emergent herbicide, Clover, Phytotoxicity, High maintenance turf
Abstract

The objective of this research project is to evaluate efficacy of various combinations of postemergent herbicides formulations for broadleaf weed control in turfgrass. The research took place in the fall period of the field season. Suncor

Published
2015

4. Herbicidal activity of Fiesta formulations applied to turfgrass infested with broadleaf weeds – 2015 trial

Author

Lyons, E., Jordan, K., and Carey, K.

Subjects
Perennial ryegrass, Festuca, Class 11, Annual report, Low risk pesticide, Dandelion, Guelph Turfgrass Institute, Established turfgrass, Lolium perenne, Broadleaf weeds, Kentucky bluegrass, Fine fescue, White clover, Weed control, Poa pratensis, Fiesta chelated iron, Product efficacy, Phytotoxicity, High maintenance turf, Herbicide, Plantain
Abstract

The objective of this research project is to evaluate the efficacy of various formulations of the sponsor’s herbicide products for control of dandelions, plantain, white clover and other broadleaf weeds in established turfgrass. Neudorff North America

Published
2015

5. Efficacy of experimental herbicide products – 2015 summer trial

Author

Lyons, E., Jordan, K., and Carey, K.

Subjects
Perennial ryegrass, Annual report, Low risk pesticide, Dandelion, Guelph Turfgrass Institute, Lolium perenne, Broadleaf weeds, Kentucky bluegrass, Poa pratensis, Post-emergent herbicide, Clover, Phytotoxicity, High maintenance turf
Abstract

The objective of this research project is to evaluate efficacy of various combinations of postemergent herbicides formulations for broadleaf weed control in turfgrass. The research was conducted during the summer field season. Suncor

Published
2015

6. Alternative Strategies for Broadleaf Weed Management in Residential Lawns

Author

Siva, Cynthia and Jordan, Katerina

Subjects
weed control, turfgrass weed control, biological control, Kentucky bluegrass, turfgrass renovation, lawn renovation, growth chamber, leaf wetness duration, bioherbicide, low risk herbicide, turfgrass lawn, dandelion, flame-weeding, corn gluten meal, chelated iron, controlled environment, herbicide, alternative weed management, biocontrol, alternative herbicide, pesticide, Sclerotinia minor, Ontario cosmetic pesicide ban, disease, lawn establishment, alternative pesticide, flaming, low risk pesticide, broadleaf weed control, lactic acid, temperature, turfgrass establishment, citric acid, turfgrass, pesticides act, biopesticide, plant pathogen, residential lawn, acetic acid, Taraxacum officinale, biological weed management, sod, fungal plant pathogen, home lawn, alternative weed control, weed management
Abstract

Weed management treatments were examined as alternatives to conventional chemical herbicides. Site preparation and post-establishment treatments were tested in a randomized complete block factorial design, over two years. There were no site preparation treatment effects of untreated control, glyphosate, acetic acid, and flame weeding. Of the post-establishment treatments, lactic/citric acid and corn gluten meal were ineffective. Sclerotinia minor provided minimal results. Chelated iron, mecoprop/2,4-D/dicamba, and sod reduced the weed cover to < 5%. The efficacy of S. minor on Taraxacum officinale was evaluated three controlled environment studies. Treatments included five temperatures: 12, 16, 20, 24, and 28C and thirteen leaf wetness durations (LWD): 0 to 96 hrs, in 8-hr increments. The main effects (temperature and LWD) and interaction were significant with respect to disease severity over time. A LWD of 48 hrs at 20C and 72 to 96 hrs at 12 and 16oC was required for high disease severity. Funding was provided by the Ontario Ministry of Environment through the Ontario Pesticide Advisory Committee, and Agriculture and Agri-Food Canada through the Clusters Initiative of the Growing Canadian Agri-Innovations Program administered by Vineland Research and Innovations Centre Inc. Also, by Ontario Ministry of Agriculture Food and Rural Affairs through the OMAFRA-University of Guelph Research Agreement.

Published
2014

7. Efficacy of experimental herbicide products – 2014 summer trial

Author

Lyons, E., Jordan, K., and Carey, K.

Subjects
Chickweed, Class 11, Low risk pesticide, Dandelion, Guelph Turfgrass Institute, Lolium perenne, Broadleaf weeds, Annual reports, Post-emergent herbicide, Turf type perennial ryegrass, Narrow leaf plantain, Black medic, Clover, Phytotoxicity
Abstract

The objective of this research project was to evaluate efficacy of various combinations of postemergent herbicides formulations for broadleaf weed control in turfgrass. Suncor

Published
2014

8. Evaluation of Fiesta™ for pre-emergent control of turfgrass weeds in the laboratory

Author

Lyons, E., Jordan, K., and Carey, K.

Subjects
Broadleaf plantain, Class 11, Low risk pesticide, Guelph Turfgrass Institute, fungi, Broadleaf weeds, Fiesta, Annual reports, food and beverages, Germination, White clover, Chelated iron, LiquiGold, Large crabgrass, Corn gluten meal
Abstract

The objective of this research project was to determine the effect of Fiesta chelated iron on germination and emergence, plant survival, shoot and root growth of turfgrass weeds (large crabgrass, white clover, and plantain) as well as turfgrass species (perennial ryegrass). Neudorff North America

Published
2014

9. Efficacy of experimental herbicide products – 2014 trial - summer

Author

Lyons, E., Jordan, K., and Carey, K.

Subjects
Par III, Class 11, Low risk pesticide, Dandelion, Guelph Turfgrass Institute, Lolium perenne, Broadleaf weeds, Fiesta, Annual reports, Chelated iron, Home lawn, Post-emergent herbicide, Turf type perennial ryegrass, Clover, Phytotoxicity, Medium maintenance
Abstract

The objective of this research project was to evaluate efficacy of various combinations of postemergent herbicides formulations for broadleaf weed control in turfgrass. Neudorff North America

Published
2014

10. Efficacy of experimental herbicide products – 2014 fall trial

Author

Lyons, E., Jordan, K., and Carey, K.

Subjects
Chickweed, Class 11, Low risk pesticide, Dandelion, Guelph Turfgrass Institute, Lolium perenne, Broadleaf weeds, Annual reports, Post-emergent herbicide, Turf type perennial ryegrass, Narrow leaf plantain, Black medic, Clover, Phytotoxicity
Abstract

The objective of this research project was to evaluate efficacy of various combinations of postemergent herbicides formulations for broadleaf weed control in turfgrass. Suncor

Published
2014

11. Efficacy of experimental herbicide products – 2013 trial - summer

Author

Lyons, E., Jordan, K., and Carey, K.

Subjects
Necrosis, Low risk pesticide, Dandelion, Narrowleaf plantain, Spot spraying, Guelph Turfgrass Institute, Phytotoxicity, Broadleaf weeds, Annual reports, Weed regrowth, Kentucky bluegrass, Poa pratensis
Abstract

The objectives of this trial were to evaluate efficacy of various post-emergent herbicides formulations in targeted application for control of dandelion and narrowleaf plantain in turfgrass.

Published
2013

12. Efficacy of Suncor experimental herbicide products – 2013 fall trial

Author

Lyons, E., Jordan, K., and Carey, K.

Subjects
Chickweed, Class 11, Low risk pesticide, Dandelion, Guelph Turfgrass Institute, Lolium perenne, fungi, Broadleaf weeds, Annual reports, food and beverages, respiratory system, Narrow leaf plantain, Necrosis, Black medic, Clover, Phytotoxicity, parasitic diseases, Turf-type perennial ryegrass, Birdsfoot trefoil
Abstract

The objectives of this trial were to evaluate efficacy of various combinations of post emergent herbicides formulations for broadleaf weed control in turfgrass. Suncor

Published
2013

13. Alternative Strategies for Broadleaf Weed Management in Residential Lawns

Author

Jordan, Katerina, Siva, Cynthia, Jordan, Katerina, and Siva, Cynthia

Abstract

Weed management treatments were examined as alternatives to conventional chemical herbicides. Site preparation and post-establishment treatments were tested in a randomized complete block factorial design, over two years. There were no site preparation treatment effects of untreated control, glyphosate, acetic acid, and flame weeding. Of the post-establishment treatments, lactic/citric acid and corn gluten meal were ineffective. Sclerotinia minor provided minimal results. Chelated iron, mecoprop/2,4-D/dicamba, and sod reduced the weed cover to < 5%. The efficacy of S. minor on Taraxacum officinale was evaluated three controlled environment studies. Treatments included five temperatures: 12, 16, 20, 24, and 28C and thirteen leaf wetness durations (LWD): 0 to 96 hrs, in 8-hr increments. The main effects (temperature and LWD) and interaction were significant with respect to disease severity over time. A LWD of 48 hrs at 20C and 72 to 96 hrs at 12 and 16oC was required for high disease severity., Funding was provided by the Ontario Ministry of Environment through the Ontario Pesticide Advisory Committee, and Agriculture and Agri-Food Canada through the Clusters Initiative of the Growing Canadian Agri-Innovations Program administered by Vineland Research and Innovations Centre Inc. Also, by Ontario Ministry of Agriculture Food and Rural Affairs through the OMAFRA-University of Guelph Research Agreement.

Catalog

Books, media, physical & digital resources
See catalog results