Some physical aspects of the cacao shade experiment
Records of soil temperatures and soil moisture contents have been taken in the Cacao Shade Experiment at the College Old Farm. Shade has exerted a considerable effect on soil temperature at a depth of 3 inches. The range of temperature was much greater under 100 percent light conditions than under 15 percent light. It takes about three-and-a-half years for the cacao to become sufficiently well developed under 100 percent light to reduce the temperatures to values similar to those under 15 percent light. Mulching tends to reduce soil temperature slightly and the range greatly. Soil moisture contents at the 0-6 inches depth are little affected by mulching, but tend to be lower under mulch at the 6-12 inches depth. A vary significant correlation has been found between yields of cacao from ICS 1 clones and depth below the surface of gravel lenses which occur in Block II. There is a significant correlation for ICS 60 and no correlation at all for ICS 95.
| Main Authors: | , |
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| Format: | biblioteca |
| Language: | eng |
| Published: |
St. Agustine (Trinidad y Tobago),
1953
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| Subjects: | THEOBROMA CACAO, SOMBRA, SUELO, TEMPERATURA DEL SUELO, CONTENIDO DE AGUA EN EL SUELO, EXPERIMENTACION, MATERIA ORGANICA, |
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