The Effects of Shading Regimes on the Growth of Cocoa Seedlings(Theobroma cacao L.)
An experiment was conducted to study the effects of different shading regimes: 80, 55, 30 and a percent i.e. full sunlight on the growth of cocoa seedlings during the first five months in the nursery. It was observed that the shading regime for optimal dryweight accumulation was under 80 percent s...
| Main Authors: | , |
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| Format: | Article |
| Language: | English English |
| Published: |
Universiti Putra Malaysia Press
1983
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| Online Access: | http://psasir.upm.edu.my/id/eprint/2244/1/The_Effects_of_Shading_Regimes_on_the_Growth_of_Cocoa_Seedlings.pdf |
| _version_ | 1825921414982533120 |
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| author | Raja Harun, Raja Muhammad Ismail, Kamariah |
| author_facet | Raja Harun, Raja Muhammad Ismail, Kamariah |
| author_sort | Raja Harun, Raja Muhammad |
| collection | UPM |
| description | An experiment was conducted to study the effects of different shading regimes: 80, 55, 30 and a
percent i.e. full sunlight on the growth of cocoa seedlings during the first five months in the nursery. It was
observed that the shading regime for optimal dryweight accumulation was under 80 percent shade during
the first three months gradually reducing to 55 percent shade from the fourth month onwards. This
interaction between age and shading regime was brought about by changes in net assimilation rates in
response to self shading as the plant aged and also to the effects of lead production in response to different
light intensities. Totally unshaded condition was detrimental to plant growth. Shading practice has to take
into account the balance between capacity for leaf production and optimal capacity for assimilation. |
| first_indexed | 2024-03-06T06:57:36Z |
| format | Article |
| id | upm.eprints-2244 |
| institution | Universiti Putra Malaysia |
| language | English English |
| last_indexed | 2024-03-06T06:57:36Z |
| publishDate | 1983 |
| publisher | Universiti Putra Malaysia Press |
| record_format | dspace |
| spelling | upm.eprints-22442013-05-27T06:59:48Z http://psasir.upm.edu.my/id/eprint/2244/ The Effects of Shading Regimes on the Growth of Cocoa Seedlings(Theobroma cacao L.) Raja Harun, Raja Muhammad Ismail, Kamariah An experiment was conducted to study the effects of different shading regimes: 80, 55, 30 and a percent i.e. full sunlight on the growth of cocoa seedlings during the first five months in the nursery. It was observed that the shading regime for optimal dryweight accumulation was under 80 percent shade during the first three months gradually reducing to 55 percent shade from the fourth month onwards. This interaction between age and shading regime was brought about by changes in net assimilation rates in response to self shading as the plant aged and also to the effects of lead production in response to different light intensities. Totally unshaded condition was detrimental to plant growth. Shading practice has to take into account the balance between capacity for leaf production and optimal capacity for assimilation. Universiti Putra Malaysia Press 1983 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/2244/1/The_Effects_of_Shading_Regimes_on_the_Growth_of_Cocoa_Seedlings.pdf Raja Harun, Raja Muhammad and Ismail, Kamariah (1983) The Effects of Shading Regimes on the Growth of Cocoa Seedlings(Theobroma cacao L.). Pertanika, 6 (3). pp. 1-5. English |
| spellingShingle | Raja Harun, Raja Muhammad Ismail, Kamariah The Effects of Shading Regimes on the Growth of Cocoa Seedlings(Theobroma cacao L.) |
| title | The Effects of Shading Regimes on the Growth of Cocoa Seedlings(Theobroma cacao L.) |
| title_full | The Effects of Shading Regimes on the Growth of Cocoa Seedlings(Theobroma cacao L.) |
| title_fullStr | The Effects of Shading Regimes on the Growth of Cocoa Seedlings(Theobroma cacao L.) |
| title_full_unstemmed | The Effects of Shading Regimes on the Growth of Cocoa Seedlings(Theobroma cacao L.) |
| title_short | The Effects of Shading Regimes on the Growth of Cocoa Seedlings(Theobroma cacao L.) |
| title_sort | effects of shading regimes on the growth of cocoa seedlings theobroma cacao l |
| url | http://psasir.upm.edu.my/id/eprint/2244/1/The_Effects_of_Shading_Regimes_on_the_Growth_of_Cocoa_Seedlings.pdf |
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