Boron deficiency in cacao, bananas and other crops on volcanic soils of Ecuador
Detailed evidence is given, that boron deficiency affects imported cacao varieties in Ecuador, which are destroyed at the beginning of their productive stage. The local varieties usually survive, but B-deficiency affects their production and makes them susceptible to such diseases as Marasmius (WB) and Ceratocystis. The first evidence is given that bananas in the field are affected by B-deficiency. On young volcanic terraces of the Riverine Belt their leaf canopy and fruit quality are affected. B-deficiency in cacao and bananas has so far not been reported from any other country. A general survey proved that also affected on young volcanic soils are arabica and robusta coffee, avocado pear, mango, chinese cabbage, alfalfa, trefoil, potato, sweet clover and apple. Its occurrence is apparently of a general and persistent kind and is promoted by the prevailing soil and climatic conditions. Research on practical control methods is a suitable object of international aid.
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| Format: | biblioteca |
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1966
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| Subjects: | THEOBROMA CACAO, MUSA, BORO, DEFICIENCIA DE OLIGOELEMENTOS, ENFERMEDADES CARENCIALES, CRINIPELLIS PERNICIOSA, CERATOCYSTIS, MORBOSIDAD, SUELO VOLCANICO, SINTOMAS, ECUADOR, |
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| Summary: | Detailed evidence is given, that boron deficiency affects imported cacao varieties in Ecuador, which are destroyed at the beginning of their productive stage. The local varieties usually survive, but B-deficiency affects their production and makes them susceptible to such diseases as Marasmius (WB) and Ceratocystis. The first evidence is given that bananas in the field are affected by B-deficiency. On young volcanic terraces of the Riverine Belt their leaf canopy and fruit quality are affected. B-deficiency in cacao and bananas has so far not been reported from any other country. A general survey proved that also affected on young volcanic soils are arabica and robusta coffee, avocado pear, mango, chinese cabbage, alfalfa, trefoil, potato, sweet clover and apple. Its occurrence is apparently of a general and persistent kind and is promoted by the prevailing soil and climatic conditions. Research on practical control methods is a suitable object of international aid. |
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