Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 401 for “"Weeds"”.
-
Pretty Weeds
<p>This thesis collection of poetry centers around the themes of family, love, relationships, death and an exploration of the poet's faith. Split into three parts, the poet delves into different themes in each. In the first part, the poet centers the reader in their perspective, providing poems …
-
Weeds mentioned in the Wisconsin weed law of 1884-5, and several other weeds
Made available in DSpace on 2016-11-09T23:48:13Z (GMT). No. of bitstreams: 2 5946551_opt.pdf: 8367671 bytes, checksum: ec322a8e0f1854e4b6756e79c26b363d (MD5) license.txt: 4183 bytes, checksum: 1dcc2037833d76bede73d5717587543b (MD5) Previous issue date: 1886
-
Weeds in Sacramento County of California
… with the crops. Stock may be poisoned by certain weeds and weeds may also act as hosts for fungus diseases, virus diseases and insect pests of cultivated crops. Many plants may be weeds in one locality and harmless or beneficial in other parts. The author has made a thorough study of the country's …
-
Herbicide resistant weeds in Missouri : sources and solutions
Herbicide resistant weeds continue to invade new territories each year. Two studies were designed to identify both the spread and the current status of herbicide resistant weeds in Missouri. In 2016 and 2017, 98 separate commercially available bird feed mixes were examined for the presence of weed …
-
Investigating herbicide and cover crop interaction in weeds
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-12-01
-
Cover crop management strategies for driver weeds in Kansas
… prior to spring planting when summer annual weeds are of concern. These data will provide a basis for further research involving seedbank decay in presence of cover crops as well as grazing cover crops.
-
Studies on the Nature of Triazine Resistance in Weeds
Triazine susceptible and resistant common lambsquarters (Chenopodium album L.) were grown under non-competitive conditions in a growth chamber. Although the two biotypes had equal leaf areas on a per plant basis, dry matter accumulation at pollination was 9% and 20% less in the resistant plants …
-
Production factors to improve edamame emergence and crop competitiveness with weeds
The student, Laura Crawford, submitted this Thesis for approval on 2017-04-12 at 11:48.
-
Factors Associated with Pollinator Foraging and Floral Morphology of Lawn Weeds
… exposure to harmful pesticides. Many common weeds in managed turfgrass systems attract honey bees (Apis mellifera L.) and other pollinators, increasing their risk of contact with insecticide residues. This dissertation project explored the potential of herbicides, optical brightener, …
-
The use of chemicals in the control of certain herbaceous perennial weeds
LD2668 .T4 1954 S99
-
Interaction Between Weeds and Insect Pests With Snap Beans (Phaseolus Vulgaris L.)
… and emergence time. Maximum yield losses at 8-weeds/m row ranged from 29 to 53% in snap bean plots with redroot pigweed, and 46 to 50% in plots with crabgrass. In crabgrass plots, coefficient A (yield loss at high weed densities) and I (percent yield loss at low weed densities) were 53% to 63% …
-
Feedback by the soil microbial community on the distribution of two weeds
… with soil feedback to two agricultural weeds, common sunflower (Helianthus annuus) and giant ragweed (Ambrosia trifida). These two plants generally follow opposite gradients of abundance from west to east in the northern United States, and I hypothesized that soil feedback can partially …
-
Allelopathic effect of imperata cylindrica (L.) beauv. extracts on the germination of weeds
… concentrations that affected the germination of weeds. The results show that Imperata cylindrica contains allelochemical compounds that are released from the root and shoots parts under different favorable conditions have the capability to contribute towards inhibition and stimulation in …
-
Variable weather and implications for herbicide efficacy and yield loss due to weeds
… 21st century. Variable weather impacts crops, weeds, and their management; however, empirical study of these phenomena has been piecemeal and limited to a handful of site years (e.g. generally 2 to 4). This research was developed to shed light on how future climate variability in the Midwest …
-
Investigating the Aquatic weeds on the Westlake Wetland: Detrimental effects and management options
The aquatic weeds on the Westlake wetland at Zandvlei (Cape Town, South Africa) were investigated in terms of their detrimental effects, and the biotic and abiotic conditions associated with their nuisance growth. Eichhornia crassipes was the most problematic of the weeds, both from a human …
Page 1 of 21