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  • 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.
21

THE RELATIONSHIP OF LIGHT QUALITY, DURATION, AND INTENSITY TO VEGETATIVE AND REPRODUCTIVE GROWTH IN ALFALFA (MEDICAGO SATIVA L.)

Murray, Glen Arthur, 1939- January 1967 (has links)
No description available.
22

COMPARATIVE STUDIES OF PHYSIOLOGICAL AND MITOCHONDRIAL PHOTORESPONSES IN SOYBEAN (GLYCINE MAX, L. MERR.) CULTIVARS

Mohamed-Osman, Ahmed Mutwakil, 1936- January 1973 (has links)
No description available.
23

Effects of auxins and light on growth of the fungus Phymatotrichum omnivorum

Liu, Katherine Kyte, 1940- January 1966 (has links)
No description available.
24

The effect of cyclic lighting and growth regulators on the rooting of Rhus lancea cuttings

Porter, Valerie Yvonne, 1937- January 1963 (has links)
No description available.
25

Production and physiological responses of Italian ryegrass and white clover grown in mono cultures and mixed stands.

Gerber, Liesel. January 1993 (has links)
The aim of this study was to test the hypothesis that ryegrass and clover, when grown under optimal conditions in mixed stands, interact in response to available light energy. with other resources non-limiting, pasture yield is determined by the efficiency with which solar radiation is intercepted by canopies and converted into dry matter. The clover-ryegrass interaction under varying light regimes, as experienced in the canopies of these pastures, was studied by investigating the growth and production of ryegrass and clover in relation to light harvesting abilities and photosynthetic utilization of intercepted light. Pasture canopy structure and growth were studied under a four-weekly clipping treatment. The interception of photon flux density (PFD) in the pasture canopy was monitored diurnally and seasonally in mixed and mono cultures. Light use efficiency (C02 fixed/ unit absorbed PFD) as well as photochemical efficiency of photosystem II (Fv/Fm) were studied by monitoring CO2 assimilation rates and chlorophyll fluorescence respectively. The results obtained from this study indicated that interaction did occur between ryegrass and clover, cultivated in mixed pastures. The mixture was capable of more efficient light interception than the mono cultures, which resulted in higher productivity. Light interception abilities, as manifested in canopy architecture, and not physiological utilization of light energy, were found to govern the interaction between the two pasture components. / Thesis (M.Sc.)-University of Natal, Durban, 1993.
26

Celery blackheart occurrence during growth as influenced by light quality and nutrition.

Guévin, José. January 1981 (has links)
No description available.
27

The effect of shading on morphology, yield and nitrogenase activity of grain legumes and tropical forage grasses and legumes

Eriksen, Flemming Iskov January 1978 (has links)
Typescript. / Thesis (Ph. D.)--University of Hawaii at Manoa, 1978. / Bibliography: leaves 198-212. / Microfiche. / xviii, 212 leaves ill. (some col.)
28

Comparative effect of supplementary red and far-red radiation on the growth of Pinto bean seedlings, Phaseolus vulgaris L

Nakata, Shigeru January 1965 (has links)
Typescript. / Thesis (Ph. D.)--University of Hawaii, 1965. / Bibliography: leaves [104]-107. / viii, 107 leaves mounted illus., tables
29

Effect of light energy and temperature on growth of subterranean clover communites / by S. Fakai

Fukai, Shu January 1974 (has links)
xvii, 215 leaves : ill. ; 30 cm.0 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Agronomy, 1974
30

Effect of light energy and temperature on growth of subterranean clover communites / by S. Fakai

Fukai, Shu January 1974 (has links)
xvii, 215 leaves : ill. ; 30 cm.0 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Agronomy, 1974

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