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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 171 to 180 of 831 (0.038 seconds)Spelling suggestions: "subject:"herbicides."" "subject:"berbicides.""
| 171 |
The effects of bromoxynil herbicide on experimental prairie wetlands /Robinson, Richard D. (Richard Daniel) January 1989 (has links)
No description available.
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| 172 |
Dissipation of the herbicides endothall, diquat, and a 1:1 mixture in water, sediment, and Egeria densaVan Horn, Scott L. (Scott Lee) January 1975 (has links)
M.S.
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| 173 |
Residue in the soil following atrazine applied as a preemergent and its effect on succeeding cropsCongrove, James Ernest. January 1964 (has links)
Call number: LD2668 .T4 1964 C74 / Master of Science
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| 174 |
The characterisation of higher plant phytoene desaturaseSmith, Jane Louise January 1999 (has links)
No description available.
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| 175 |
Studies towards the synthesis of the herbicidins and brevioximeKaradogan, Burhan January 2000 (has links)
No description available.
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| 176 |
Influence of formulation and application variables in relation to the performance of glyphosate and imazapyr for control of Imperata cylindrica (L.) RaeuschelTownson, Jane K. January 1990 (has links)
No description available.
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| 177 |
A disposable electrochemical affinity sensor for 2,4-D in soil extractsKröger, Silke January 1998 (has links)
No description available.
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| 178 |
Studies on the ether-cleavage system and its gene involved in 2,4-dichlorphenoxyacetic acid dissimilation in Burkholderia cepacia strain 2AXia, Xiao-Song January 1995 (has links)
No description available.
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| 179 |
Studies on imazapyr, a herbicide for minimum tillage purposes in areas infected with lalang (Imperata cylindrica (L.) Raeuschel)Subagyo, T. January 1989 (has links)
No description available.
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| 180 |
Investigation of approaches to accelerate atrazine mineralisation in soilHorswell, Jacqueline January 1997 (has links)
Atrazine, a member of the s-triazine herbicides, appears on the EC Red List of chemicals that cause environmental concern, with residues occurring frequently in sub-soils and aquifers world-wide. Microbial metabolism is considered to be the major mechanism of complete removal of atrazine from the soil environment. Laboratory-based studies were carried out to investigate the microbial mineralisation of atrazine in soil, and to develop novel methods for potential acceleration of breakdown. In initial investigations, simple microcosm experiments were carried out to identify the importance of different fractions (water-soluble and water-insoluble) of plant residues to the dynamics, and extent of atrazine mineralisation. The amendment of soil with different plant residue fractions initially inhibited (for the water-soluble fraction) or enhanced (for the water-insoluble fraction) dynamics of atrazine mineralisation. However, by the end of the incubation, there was no overall effect on atrazine mineralisation. This suggested that increasing the soil organic matter content may render the herbicide less bioavailable to the degrader population. Investigations carried out to determine which component of the microbial biomass was more important in atrazine mineralisation showed that substantial removal of the fungal and Gram-negative bacterial population inhibited atrazine mineralisation in the soil. Experiments to selectively enrich the soil for fungal or bacterial atrazine degraders isolated a mixed bacterial culture able to accelerate atrazine mineralisation when inoculated into soil. The effect of the presence of the earthworm Lumbricus terrestris on the indigenous atrazine degrading microflora was investigated. Results indicated that atrazine mineralisation could be accelerated, but this was not primarily due to increases in microbial biomass, but possibly due to physio-chemical changes brought about by the earthworm and subsequent alterations in atrazine bioavailability.
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