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The Use of Endomycorrhiza in Rehabilitating Matured Cocoa Stands

A pot experiment was conducted to study the effectiveness of two VAM species in enhancing growth of cocoa seedlings. Cocoa seedlings of hybrid UITlxNa32 inoculated with Glomus mosseae and Scutellospora calospora either as a single inoculum or as a mixed inoculum and uninoculated control were gro...

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Main Author: Maria Viva Rini,
Format: Thesis
Language:English
English
Published: 1996
Online Access:http://psasir.upm.edu.my/id/eprint/10381/1/FP_1996_12_A.pdf
http://psasir.upm.edu.my/id/eprint/10381/
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spelling my.upm.eprints.103812011-03-30T03:41:50Z http://psasir.upm.edu.my/id/eprint/10381/ The Use of Endomycorrhiza in Rehabilitating Matured Cocoa Stands Maria Viva Rini, A pot experiment was conducted to study the effectiveness of two VAM species in enhancing growth of cocoa seedlings. Cocoa seedlings of hybrid UITlxNa32 inoculated with Glomus mosseae and Scutellospora calospora either as a single inoculum or as a mixed inoculum and uninoculated control were grown in 2 kg sterilized Tai Tak. series soil. The experiment was a single factor experiment arranged in a completely randomized design, with type of inoculum as a factor with four replications. The trial was done in greenhouse No. 11 C of Univeristi Pertanian Malaysia. Of the four treatments used, plants inoculated with mixed inoculum gave more pronounced and significant vegetative growth (as measured by plant height, total leaf area, root dry weight and nutrient content in leaf tissue) compared to the other treatments. The effect of mixed inoculum G. mosseae and S. calospora was further evaluated in the field using a split-plot design, with V AM treatment as the main plot and cocoa clone as the subplot Five selected cocoa clones (KKM3, KKM4, KKM5, PBC137 and PBC 178) were grafted onto nine year old cocoa trees from hybrid UITlxNa32. All data were collected at 3, 5 and 7 months after VAM inoculation. Inoculated clones showed better and significant plant growth, with longer scion lengths and larger leaf area index, than uninoculated ones. The crop physiology was also significantly affected by VAM, with higher relative water and chlorophyll content in the leaf and lower stomatal resistance. Results obtained also indicated that the mixed inoculum significantly improved VAM development in the soil, subsequently enhancing P, K and Mg uptake by the plants. This subsequently shortened the plant vegetative phase enabling them to flower earlier. 1bis is true for the PBC clones. In fact, between the two clones tested, the PBC clones-especially PBC 137 proved to be far superior than the KKM clones. Soil physical properties such as soil moisture, percent aggregate and aggregate stability were also improved in the presence of the mycorrhiza fungi. The difference between treatments however was not significant. 1996 Thesis NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/10381/1/FP_1996_12_A.pdf Maria Viva Rini, (1996) The Use of Endomycorrhiza in Rehabilitating Matured Cocoa Stands. Masters thesis, Universiti Pertanian Malaysia. English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description A pot experiment was conducted to study the effectiveness of two VAM species in enhancing growth of cocoa seedlings. Cocoa seedlings of hybrid UITlxNa32 inoculated with Glomus mosseae and Scutellospora calospora either as a single inoculum or as a mixed inoculum and uninoculated control were grown in 2 kg sterilized Tai Tak. series soil. The experiment was a single factor experiment arranged in a completely randomized design, with type of inoculum as a factor with four replications. The trial was done in greenhouse No. 11 C of Univeristi Pertanian Malaysia. Of the four treatments used, plants inoculated with mixed inoculum gave more pronounced and significant vegetative growth (as measured by plant height, total leaf area, root dry weight and nutrient content in leaf tissue) compared to the other treatments. The effect of mixed inoculum G. mosseae and S. calospora was further evaluated in the field using a split-plot design, with V AM treatment as the main plot and cocoa clone as the subplot Five selected cocoa clones (KKM3, KKM4, KKM5, PBC137 and PBC 178) were grafted onto nine year old cocoa trees from hybrid UITlxNa32. All data were collected at 3, 5 and 7 months after VAM inoculation. Inoculated clones showed better and significant plant growth, with longer scion lengths and larger leaf area index, than uninoculated ones. The crop physiology was also significantly affected by VAM, with higher relative water and chlorophyll content in the leaf and lower stomatal resistance. Results obtained also indicated that the mixed inoculum significantly improved VAM development in the soil, subsequently enhancing P, K and Mg uptake by the plants. This subsequently shortened the plant vegetative phase enabling them to flower earlier. 1bis is true for the PBC clones. In fact, between the two clones tested, the PBC clones-especially PBC 137 proved to be far superior than the KKM clones. Soil physical properties such as soil moisture, percent aggregate and aggregate stability were also improved in the presence of the mycorrhiza fungi. The difference between treatments however was not significant.
format Thesis
author Maria Viva Rini,
spellingShingle Maria Viva Rini,
The Use of Endomycorrhiza in Rehabilitating Matured Cocoa Stands
author_facet Maria Viva Rini,
author_sort Maria Viva Rini,
title The Use of Endomycorrhiza in Rehabilitating Matured Cocoa Stands
title_short The Use of Endomycorrhiza in Rehabilitating Matured Cocoa Stands
title_full The Use of Endomycorrhiza in Rehabilitating Matured Cocoa Stands
title_fullStr The Use of Endomycorrhiza in Rehabilitating Matured Cocoa Stands
title_full_unstemmed The Use of Endomycorrhiza in Rehabilitating Matured Cocoa Stands
title_sort use of endomycorrhiza in rehabilitating matured cocoa stands
publishDate 1996
url http://psasir.upm.edu.my/id/eprint/10381/1/FP_1996_12_A.pdf
http://psasir.upm.edu.my/id/eprint/10381/
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score 13.211869

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