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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.
1

Comparison of the pH requirements of certain lawn grasses and weeds : together with a study of the related physiological differences.

Minshall, William Harold. January 1938 (has links)
No description available.
2

New inhibitors and substrates for clostridium histolyticum collagenase

Vencill, Charles Francis 12 1900 (has links)
No description available.
3

Estudio comparativo de seis diferentes tipos de substrato en la produccion de humus de limbriz y su incidencia productiva en hortalizas (rabano, acelga, cebolla blanca, col) /

Romero Mancero, Romeo Byron. January 1999 (has links)
Thesis (Ingeniero Zootecnista)--Escuela Superior Politecnica de Chimborazo. Facultad de Ciencias Pecuarias. Escuela de Ingeniera Zootecnica. / Abstract in Spanish and English.
4

Estudio comparativo de seis diferentes tipos de substrato en la produccion de humus de limbriz y su incidencia productiva en hortalizas (rabano, acelga, cebolla blanca, col) /

Romero Mancero, Romeo Byron. January 1999 (has links)
Thesis (Ingeniero Zootecnista)--Escuela Superior Politecnica de Chimborazo. Facultad de Ciencias Pecuarias. Escuela de Ingeniera Zootecnica. / Abstract in Spanish and English.
5

Determination and assessment of procedures of the pour-through nutrient extraction procedure for bedding flats and plug trays /

Schweizer, Amelia Lee, January 1993 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1993. / Vita. Abstract. Includes bibliographical references. Also available via the Internet.
6

The marketability of small scale hydroponic systems for the horticultural industry in South Africa

Rossouw, Alex January 2016 (has links)
Thesis (MTech (Horticultural Science))--Cape Peninsula University of Technology, 2016. / Hydroponics, i.e. plant cultivation in mineral-rich water is a synergy between plant, human, and machine. For decades the hydroponic garden has been offered on horticultural markets, and was repeatedly innovated to better meet consumer horticultural needs. Currently, platform convergences with electronic control systems can possibly enable more efficient products for direct consumer hydroponic cultivation. This means that, like many appliances in the home; hydroponic plant cultivation can become somewhat automated. Marketing and product innovation can help calibrate optimal New Product Development NPD of hydroponic gardens for people. The literature review grasps how consumers are subjected to a changing environment together with changing technology such as hydroponics, plant nutrition, and even garden automation. Market research frameworks namely Morphological Analysis (MA) and Conjoint Analysis (CA) are the tools deployed here for profiling and prioritising these products for horticultural consumers. Firstly, a qualitative analysis identifies conceptual sets for structures, inputs, and controls, which all harmonise into new intersections cultivation, hydroponics, and automation and the e-garden concepts. The MA next produces, and organises secondary data into constraints for the CA. Here, general hydroponic cultivation is first decomposed into all its many component parts which collectively describe the whole, where these parts are then classed along various attributes namely: garden plane xA, automation xB, performance xC, organics xD, and price xE So garden plane is composed of level and vertical gardens, garden automation is composed of manual and automatic gardens, garden performance is composed of casual and high-performance gardens, garden organics is composed of non-organic and organic gardens, and garden price although quantitative is simply composed of R2500 and R5000. These classes of attributed data can now become treated as categorical factors using indicator or dummy variables. Secondly, the CA determines how these attributes are most preferred by horticultural consumers at garden centre clusters. This involves measuring respondent preferences levels, to compute the part-worth utility for each attribute found in the MA. Factors such as garden organics, price, and automation hold adjusted alpha significance. Mainly, garden organics contributed to response effects, while price has negative slope and is second, while automation comes third. A combination of garden automation and organics is found to optimise consumer utility for Hydroponic Garden(s) HG.This research illuminates how horticultural consumers may prefer various HG, by understanding HG and how they can better benefit these people.
7

Aeration and mode of nutrient delivery affects growth of peas in a controlled environment

Romagnano, Joseph F. January 2004 (has links)
Thesis (M.S.)--Worcester Polytechnic Institute. / Keywords: advanced life support; ethylene; carbon dioxide; pisum sativum; root hypoxia; oxygen; bioregenerative life support. Includes bibliographical references (p. 53-57).
8

Nutrient uptake by aeroponically grown Bibb lettuce as related to nutrient solution concentration

Giboney, Paul Matthew January 1980 (has links)
No description available.
9

Use of gel additives for fluid drilled tomatoes

Minero Amador, Adolfo. January 1986 (has links)
No description available.
10

Evaluation of optimal substrates and fertilizers for organic vegetable transplant production in Alabama

McGrath, Colleen Johanna, Kemble, Joseph, January 2008 (has links) (PDF)
Thesis (M.S.)--Auburn University, 2008. / Abstract. Vita. Includes bibliographical references (p. 100-102).

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