The objective of this research was the selection of the most efficient arbuscular mycorrhizal (AM) fungus on pepper (Capsicum frutescens L. cv. North star) and sweet corn (Zea mays L. cv. Bicolor) growing under controlled and field conditions. The inoculum treatments consisted of 9 different AM inocula and an autoclaved mix of roots and sand used as a control. Plants were inoculated and planted in a pasteurized growth medium (greenhouse) and non-fumigated soil in 4 different field locations for each crop. Glomus intraradices (GinA) and both the same strain (GinA) and a mix of Sclerocysitis rubiformis and G. fasciculatum (Sru$+$) developed the highest AM colonization in sweet corn and pepper, respectively, under controlled conditions. However, no significant increases in growth were found compared with non-mycorrhizal plants. Only a mix of G. microagreggatum, G. mosseae and G. fasciculatum (Gmi+) produced a greater shoot dry mass compared with the control treatment in sweet corn under controlled conditions. None of the mycorrhizal strains used in the field experiments increased the growth of sweet corn or pepper compared with non-inoculated plants under field conditions.

No description available.

Thesis (Ph. D. in Genetics)--University of California, Davis, Jan. 1953. / Includes bibliographical references (leaves 47-48). Also available via the World Wide Web. (Restricted to UC campuses).

Thesis (Ph. D.)--University of Adelaide, Dept. of Crop Protection, 1997. / Includes bibliographical references (leaves 162-198).

Thesis (Ph. D.)--University of Michigan, 1942. / Papers no. 777 and no. 801 from the Department of Botany, University of Michigan. Reprinted from the American journal of botany, v. 28, no. 8, October, 1941, and Proceedings of the American Society for Horticultural Science, v. 40, 1942. "Literature cited" at end of each part.

Made available in DSpace on 2014-06-11T19:32:27Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-12-01Bitstream added on 2014-06-13T19:22:07Z : No. of bitstreams: 1 roman_alc_dr_botfca.pdf: 2164370 bytes, checksum: 30511d45ce01f7abb2a25100183ebd3d (MD5) / Capsicum L. é o gênero botânico da família Solanaceae que abrange as pimentas e pimentões, hortícolas originárias do continente americano. Neste trabalho, efetuou-se um levantamento etnobotânico voltado a compreender a importância dessas plantas no cotidiano dos moradores do Cabeça D‟Onça, uma localidade de várzea, situada à margem do rio Amazonas. Pertencente ao município de Santarém, Estado do Pará, a comunidade é constituída por aproximadamente 330 habitantes. Ao todo, foram entrevistadas 116 pessoas, residentes em 70 domicílios. Das quatro espécies de Capsicum ocorrentes no Brasil, três cultivam-se na área de estudo: C. frutescens, C. chinense e C. annuum (C. annuum var. annuum e C. annuum var. glabriusculum). As informações concernentes aos diferentes propósitos de uso das pimentas, recolhidas mediante entrevistas semi-estruturadas, foram compiladas pormenorizadamente, valorizando as concepções dos entrevistados a respeito dessas plantas e de seus modos de aproveitamento, organizados dentro de sete “categorias de uso”: “condimentar”; “medicinal”; “repelente”; “ritual”; “ofensivo”; “estimulante para animais” e “ornamental”. Na segunda etapa do trabalho, entrevistas estruturadas realizaram-se em 40 domicílios, com 80 pessoas (40 casais), para se determinar quais as indicações das pimentas eram mais conhecidas na área de estudo. Registrou-se, assim, um número grande de usos, mais precisamente da “malagueta” (C. frutescens), relacionados ao modo de vida ligado ao ambiente da várzea. Além do seu emprego na condimentação de peixes, destacam-se algumas destinações da espécie, citadas por mais de 85% dos entrevistados, tais como para repelentes de botos que... / Capiscum L. is the botanical genus of the Solanaceae family which includes peppers and green peppers, horticolas originally native to the Americas. An ethnobotanical study aimed at understanding the importance of these plants in the daily life of the people of Cabeça D‟Onça, an area in the Amazon River floodplain, was carried out for this thesis. The community of approximately 330 residents is situated in the municipality of Santarém, Pará State. In total, 116 people from 70 households were interviewed for this work. Of the four Capiscum species found in Brazil three are cultivated in the study area: C. frutescens, C. chinense e C. annuum (C. annuum var. annuum e C. annuum var. glabriusculum). Information regarding the uses of these peppers was collected in semi-structured interviews and compiled in detail. The interviewees‟ conceptions regarding the plants and their uses were faithfully respected, with the latter organized into seven “categories of usage”, as follows: “seasoning”, “medicinal”, “repellent”, “ritual”, “offensive”, “stimulant for animals” and “ornamental”. In the second phase of the study, structured interviews were carried out in 40 households with 80 people (40 couples) to determine the most commonly-known uses of the peppers in the study area. A high number of different uses was noted, particularly of the malagueta / chilli pepper (C. frutescens), related to lifestyle in the floodplain environment. Beyond of... (Complete abstract click electronic access below)

No description available.

No description available.

Faced with the twin challenges of food security and environmental protection, given the energy resource scarcity, agriculture needs to develop production systems that are highly productive, economically viable and environmentally sound. In this regard, several production systems have been recently developed. All of them share the general objective of using less energy per unit of output. / The focus of this study for red pepper, is to examine the environmental performance of a plasticulture system compared to a conventional system in terms of: (1) energy inputs per unit of output; and (2) cost per unit of output. / Energy analysis was performed to account for the total energy consumed in red pepper production under silver mulch and no-mulch. The method of process analysis was employed to account for total energy requirements for different inputs. Partial budgets for both type of production systems were constructed to estimate the costs of production. The analysis boundary was set at the farm gate. Production costs are derived from secondary data. Data on mulch yield were based on the results of an experimental trail conducted on the farm of Macdonald Campus of McGill University in the West Island of Montreal (Fava, 1996). (Abstract shortened by UMI.)

Typescript. / Thesis (Ph. D.)--University of Hawaii at Manoa, 1975. / Bibliography: leaves [130]-141. / xi, 141 leaves ill. (some col.)