• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 6
  • 2
  • 1
  • Tagged with
  • 11
  • 11
  • 3
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • About
  • 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.
1

Panel data analysis on farm-level efficiency, input demand, and output supply of rice farming in West Java, Indonesia

Erwidodo. January 1990 (has links)
Thesis (Ph. D.)--Michigan State University, 1990. / Includes bibliographical references (leaves 182-186).
2

Thēknōlōyī kānphalit khāo khō̜ng Prathēt Thai, Phō̜. Sō̜. 2398-2475

Yuphin Khamthǣng. January 1985 (has links)
Thesis (M.A.)--Silpakorn University, 1985. / In Thai; abstract also in English. Added t.p.: Technology in rice production in Thailand, 1855-1932. Includes bibliographical references (leaves 266-295). Also issued in print.
3

Ri zhi shi qi Taizhong di qu de nong hui yu mi zuo, 1902-1945

Li, Liyong. January 1900 (has links)
Revision of author's doctoral thesis. / Includes bibliographical references (p. 287-303).
4

Thēknōlōyī kānphalit khāo khō̜ng Prathēt Thai, Phō̜. Sō̜. 2398-2475

Yuphin Khamthǣng. January 1985 (has links)
Thesis (M.A.)--Silpakorn University, 1985. / In Thai; abstract also in English. Added t.p.: Technology in rice production in Thailand, 1855-1932. Includes bibliographical references (leaves 266-295).
5

Studies on the interaction between arsenic (As) and rice varieties which differ in arsenate (As(V)) tolerance

Nigar, Meher January 2009 (has links)
In order to gain a better understanding of the mechanism of As(V) tolerance in rice, a number of hydroponic tolerance tests have been done on the interaction of As(V) with phosphate (PO<sub>4</sub><sup>3-</sup>), reduced glutathione (GSH) and O<sub>2</sub> supply.  The PO<sub>4</sub><sup>3—</sup>As(V) interaction test revealed that increasing PO<sub>4</sub><sup>3-</sup> concentration reduces the toxicity of As(V).  Low PO<sub>4</sub><sup>3-</sup> (0.05 mM) showed no protection against As(V) induced root inhibition, but higher PO<sub>4</sub><sup>3-</sup> (0.5 and 5 mM) showed marked protection, suggesting PO<sub>4</sub><sup>3-</sup> derived tolerance is not due to reduced PO<sub>4</sub><sup>3-</sup> transport that has been postulated in other grass species.  The glutathione (GSH)-As(V) interaction test revealed a strong effect of GSH, increasing tolerance in rice.  The O<sub>2</sub> supply test also revealed a significant effect with enhanced tolerance in rice.  Therefore it can be suggested that PO<sub>4</sub><sup>3-</sup>, GSH and air bubbling supply all reduces As(V) toxicity in rice by increasing tolerance.  The protection against As(V) provided by GSH and PO<sub>4</sub><sup>3-</sup> were not the same for two rice varieties, Azucena (As sensitive) and Bala (As tolerant).  However these tolerance tests cannot explain why Azucena and Bala differ in susceptibility to As(V).  Three green house pot experiments revealed that As(V) treatment reduces growth in dose dependent way.  Total As concentration in the shoots and grain increases with the increasing concentration of the As(V) treatments.  Surprisingly, application of PO<sub>4</sub><sup>3-</sup> does not alter As(V) toxicity.  Anaerobic (lowland) soil shows higher shoot As concentration but uptake is lower.  Rice genotypes show significant variation in their plant growth, total shoot As concentration and total As uptake which reveal that tolerant genotypes contain higher shoot As. Results of the hydroponics and pot experiments suggested that tolerance of rice is not derived from competition with As(V) at the PO<sub>4</sub><sup>3-</sup> transporters, but rather reflects another, as yet unknown, mechanism.
6

Introducing agricultural change the Inland Valley Swamp Rice Scheme in Sierra Leone /

Weintraub, Leon. January 1973 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1973. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 325-337).
7

Studies on the interaction between arsenic (As) and rice varieties which differ in arsenate (As(V)) tolerance

Nigar, Meher. January 2009 (has links)
Thesis (Ph.D.)--Aberdeen University, 2009. / Title from web page (viewed on Oct. 5, 2009). Includes bibliographical references.
8

The Germans of Roberts Cove, Louisiana: German Rice Cultivation and the Making of a German-American Community in Acadia Parish, 1881-1917

Soileau, Lydia 17 December 2010 (has links)
The Germans of Geilenkirchen-Hengesburg region of Germany were convinced by relative and friend, Father Peter Leonard Thevis, of the Archdiocese of New Orleans, to emigrate to the United States for a number of reasons: political, religious, and economic. After establishing themselves on land previously used for grazing cattle, the Germans soon discovered rice could easily be cultivated in large amounts. Along with their success as rice farmers in Roberts Cove, Louisiana, these Germans soon involved themselves in politics and engaged one another and the surrounding community in numerous court cases. These court cases, overlooked by previous historians, demonstrate that the Germans of Roberts Cove had begun to assimilate, prior to World War I and the passage of anti-German legislation.
9

The use of phosphate rock in a rice-legume rotation system on acid soil in the humid forest zone of West Africa /

Attiogbevi-Somado, Eklou. January 2000 (has links)
Thesis (doctoral)--Georg-August-Universität Göttingen. / Includes bibliographical references (p. 137-150).
10

Improving Conservation Outcomes in a Biodiversity Hotspot: Alternative Agriculture Techniques in Maromizaha Forest, Madagascar

Whitman, Karie L. January 2017 (has links)
No description available.

Page generated in 0.0404 seconds