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n Studie van verskillende deklaagmateriale in die kommersiele verbouing van Agaricus Brunnescens Peck
Dissertation (MSc)--University of Pretoria, 1984.
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| Format: | Thesis |
| Language: | Afrikaans |
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University of Pretoria
2022
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| _version_ | 1867613502923866112 |
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| access_status_str | Open Access |
| author2 | Eicker, A. |
| author_browse | Eicker, A. |
| author_facet | Eicker, A. |
| collection | Thesis |
| dc_rights_str_mv | © 2020 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc)--University of Pretoria, 1984. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/85416 |
| institution | University of Pretoria (South Africa) |
| language | Afrikaans |
| last_indexed | 2026-06-10T12:37:10.603Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/85416 n Studie van verskillende deklaagmateriale in die kommersiele verbouing van Agaricus Brunnescens Peck Eicker, A. Smit, Martmari UCTD Deklaagmateriale kommersiele verbouing Agaricus Brunnescens Peck Dissertation (MSc)--University of Pretoria, 1984. An attempt was made to find an economic alternative for peat moss which is currently used as casing material in the commercial production of Agaricus brunnescens Peck. Substrates such as spent compost which is obtainable from various farms, and paper pulp, as well as additives like vermiculite and activated charcoal, were evaluated. Certain chemical, physical and microbiological aspects as well as the production of mushrooms and the average number of fruit bodies per unit area obtained on the various substrates, were compared with peat moss. The percentage water-holding capacity, percentage pore space, pH, conductivity, number of fungi and number of bacteria per gram dry mass of the materials were determined. Fungi were isolated from these materials and identified with the aim of tracing possible competitive and parasitising fungi. In addition fresh spent compost was allowed to mature for a period of one year in the veld and was artificially leached by regular watering. Any changes in the above mentioned aspects as well as changes in the production of mushrooms by using compost as casing material were noted. The production on spent compost that was spread out in the veld under South African weather conditions and artificially leached, compared favourably with that of peat moss. The conductivity and number of bacteria in the matured spent compost showed a drastic reduction during this period, while the production increased. Spent compost left in the veld for two years to leach but without spreading it, did not give such a high yield. An increase in production was achieved by adding 2,6% activated charcoal to the spent compost. The physical properties of the casing material do not necessarily improve by adding 15% and 30% of vermiculite. Production when paper pulp was used as casing material was quite significant initially but the paper pulp probably cannot maintain this level of production over a long time span of five breaks. Only three fungi which probably parasitise mushroom miselium were isolated from the evaluated material, namely Mycogone perniciosa from fresh used compost and Chrysosporiumcf. pannorum and Verticillium fungicola from the peat. Futhermore a number of green moulds (possibly could be in competition with the mushrooms) were isolated, namely species of Aspergillus, ciadosporium, PeniciZZium and Trichoderma. None of these fungi affected the mushroom growth adversely. Plant Science MSc Unrestricted 2022-05-17T11:21:03Z 2022-05-17T11:21:03Z 2021/10/22 1984 Dissertation * https://repository.up.ac.za/handle/2263/85416 af © 2020 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Deklaagmateriale kommersiele verbouing Agaricus Brunnescens Peck n Studie van verskillende deklaagmateriale in die kommersiele verbouing van Agaricus Brunnescens Peck |
| title | n Studie van verskillende deklaagmateriale in die kommersiele verbouing van Agaricus Brunnescens Peck |
| title_full | n Studie van verskillende deklaagmateriale in die kommersiele verbouing van Agaricus Brunnescens Peck |
| title_fullStr | n Studie van verskillende deklaagmateriale in die kommersiele verbouing van Agaricus Brunnescens Peck |
| title_full_unstemmed | n Studie van verskillende deklaagmateriale in die kommersiele verbouing van Agaricus Brunnescens Peck |
| title_short | n Studie van verskillende deklaagmateriale in die kommersiele verbouing van Agaricus Brunnescens Peck |
| title_sort | n studie van verskillende deklaagmateriale in die kommersiele verbouing van agaricus brunnescens peck |
| topic | UCTD Deklaagmateriale kommersiele verbouing Agaricus Brunnescens Peck |
| url | https://repository.up.ac.za/handle/2263/85416 |