This thesis applies the historical-structural approach to study rice industry of the development in Taiwan and stat role how to change. We through the influence cause and structure by whole international and internal circumstance, political economics, and social factors during the transferring process of rice industry after the government of R.O.C. moved to Taiwan in 1949¡Athis thesis based on the production and sale of the rice policy changing in four different and sequential stages, which is used to examine the four stages at the relationship among state¡Brice farmers and unofficial agricultural sectors in development of Taiwan Rice Industry, and also explores what kind of pressures will influence the state¡¦s role.

Thesis (M.S.)--California Polytechnic State University, 2010. / Title from PDF title page; viewed on February 18, 2010. Major professor: Linda Vanusupa, Ph.D. "Presented to the faculty of California Polytechnic State University, San Luis Obispo." "In partial fulfillment of the requirements for the degree [of] Master of Science in Engineering, with Specialization in Materials Engineering." "February 2010." Includes bibliographical references (p. 67).

Thesis (Ph. D.)--University of Missouri-Columbia, 2002. / Typescript. Vita. Includes bibliographical references (leaves 94-99). Also available on the Internet.

Thesis (Ph. D.)--University of Missouri-Columbia, 2002. / Typescript. Vita. Includes bibliographical references (leaves 94-99). Also available on the Internet.

published_or_final_version / Biological Sciences / Doctoral / Doctor of Philosophy

published_or_final_version / abstract / toc / Botany / Master / Master of Philosophy

published_or_final_version / Botany / Master / Master of Philosophy

No description available.

Lowland rice production is expanding throughout South-East Asia necessarily onto soils of poorer nutrient status with a resulting decrease in yields. An understanding of the nutrient status of the rice rhizosphere is essential for the development of appropriate management practices to increase rice yields. Phosphorus (P) deficiency is one aspect of rice nutrition. Increased rice root respiration and P uptake efficiency, and an increase in H$ sp{+}$ released from roots and enhanced solubility of calcium phosphates are two possible mechanisms of tolerance to low P levels. These mechanisms were evaluated but could not be used as single tests to differentiate among cultivars for tolerance to P deficiency. Phosphorus reactions in the soil may be confounded by the chemistry of iron (Fe). Iron and P interactions in the rice rhizosphere were investigated using a Philippine paddy soil. Root loss of oxygen (O$ sb2$) into the rhizosphere caused the oxidation of Fe$ sp{2+}$ and the concurrent release of H$ sp{+}$. Root release of H$ sp{+}$ from cation-anion uptake imbalances also contributed to the acidification of the rhizosphere. Accumulation of Fe$ sp{3+}$ was found next to the root plane. Depletion of acid-soluble P coincided with the zone of acidification. Rice plants were able to utilize the acid-soluble P fraction during growth.

No description available.