Aplicación de diferentes fuentes de azufre en soya (Glycine max (L.) Merrill) en tres ordenes de suelos del Valle del río Cauca, Colombia, en condiciones de invernadero
In order to fertilize, four sources of sulphur, ammonicum sulfate, gyppum, sulfuric acid and micronized sulphur, were used. Sulphur dose of 20 and 40 kg per hectare were applied before sowing and at the seeding moment, on three soils orders (Vertisol, Inceptisol and Entisol) of the geographic Valley of the Cauca river, with the soybeam variety ICA Tunía. The experimental units were made of polyethilen bags with two kilograms of air dry soil, using the Ap. horizon. The experimental design was completyly ramdom. The treatment designs were two factorial s interlaced with two additional treatments, absolute indicator (To) commercial indicator (Te). This carried basal fertilization with N, P, K and twelve treatments with basal fertilization plus sulphur (N, P, K + S). At flowering stage, the dry mather weight, nodules weight, % S, % N, and N/S, were mesured. At harvest time, % S, % N, N/S, amount of pods, grain, dry weight of grain and oil percentaje were determined. The soil orders showed good response to fertilization with sulphur. The source that presented significant differences with a highest increase in production of grain was the micronized sulphur with dose of 20 kg S/hectare, applied before sowing.
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Universidad Nacional de Colombia - Sede Palmira
1989
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| Online Access: | https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/15390 |
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