M.Sc. PDFs For Download

20Jun08

Since WordPress is now allowing 3GB of storage I thought I would place my thesis on my Blog site and see how it lists in search engines. The first is my M.Sc. Thesis:

Wilcox, Douglas Howard, M.Sc., The University of Manitoba, May 1986, Biology and Control of Bromus pectinatus Thunb., 177pgs.

Abstract (downloads follow) – Investigations into the biology and control of the annual grassy weed Bromus pectinatus Thunb. were conducted at the National Plant Breeding Station, Njoro, Kenya, from 1982 to 1984.

B. pectinatus is described and, in the tradition of other Bromus sp. of similar morphology, the common name Kenya Chess is proposed for B. pectinatus.

Pot growth of B. pectinatus was influenced by soil type and microclimate, but not by seed origin. B. pectinatus was germinated and grown in amended and untreated soils ranging in pH from 3.05 to 8.13. Soils with a pH near 3 could not support growth or germination of B. pectiqatus. B. pectinatus grew best on a soil of pH 6.55 and when soil pH influenced germination the optimum soil pH was 6.0. Out-of-doors grown B. pectinatus matured earlier and had fewer culms than plants grown in the shadehouse or glasshouse.

Exposure to light during germination, inhibited the germination of B. pectinatus seeds. Germination of B. pectinatus seed was most rapid at a 17 C temperature. Prechilling or preheating seeds did not promote germination of dormant B. pectinatus seeds. Germination of dormant B. pectinatus seeds was enhanced by seed hull removal or pricking the lemma or removing the rachilla segment.

Germination of B. pectinatus seed in the soil was unaffected by depth of burial, whereas, emergence was reduced to 35, 19, 11, 4 and 0% from depths of 0, 1, 2, 4 and 8 cm, respectively.

There was a relationship between field emergence of B. pectinatus and the precipitation pattern. After-harvest germination of B. pectinatus seed indicated that there was an innate dormancy in hulled seed which persisted for 8 months. The innate dormancy was mainly induced by the seed hull, but was also induced within the caryopsis itself.

Field measurements were used to develop an equation which related yield loss in wheat with B, pectinatus infestation. Delayed sowing of wheat and barley into a B. pectinatus infested site resulted in yield reductions that were correlated with length of delay.

Replacement series studies were conducted using varying proportions of wheat : B. pectinatus and rapeseed : B. pectinatus. Varying the proportions resulted in growth changes in the plants. B. pectinatus maturation was delayed when grown in a mixture. Rapeseed / canola was unaffected by B. pectinatus interference.

A spatial interference study determined that B. pectinatus interfers with wheat mainly above ground.

The herbicides isoproturon, pendimethalin and oxadiazon were found to be ineffective against B. pectinatus, The herbicides triallate, chlorsulfuron, metribuzin, trifluralin and EPTC achieved limited control of B, pectinatus. Superior control of B. pectinatus was achieved using fluazifop-butyl at 0.25 kg/ha and fenthiaprop-ethyl at 0.12 kg/ha, in rapeseed / canola.

Downloads:

PDF – bromus_msc_1 – Cover Sheets, Acknowledgments, Table of Contents, List of Tables, List of Figures

PDF – bromus_msc_2 – Abstract, Forward, Introduction

PDF – bromus_msc_3 – Literature Review

PDF – bromus_msc_4 – Chapter 1 – Bromus pectinatus Thunb. Morphology

PDF – bromus_msc_5 – Chapter 2 – The influence of Soil pH on the Morphology of Bromus pectinatus Thunb.

PDF – bromus_msc_6 – Chapter 3 – Factors Influencing the Germination and Emergence of Bromus pectinatus Thunb.

PDF – bromus_msc_7 – Chapter 4 – Field Emergence and dormancy of Bromus pectinatus Thunb.

PDF – bromus_msc_8 – Chapter 5 – Bromus pectinatus Thunb. Interference in Crops

PDF – bromus_msc_9 – Chapter 6 – Chemical Control of Bromus pectinatus Thunb.

PDF – bromus_msc_10 – General Discussion, Summary and Conclusions, Suggestions for Further Work

PDF – bromus_msc_11 – List of References

PDF – bromus_msc_12 – Appendix

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