| Journal: | Tropical and subtropical agroecosystems |
| Database: | PERIÓDICA |
| System number: | 000269066 |
| ISSN: | 1870-0462 |
| Authors: | Phengvichith, Vanthong1 Ledin, Stig1 Horne, Peter Ledin, Inger2 |
| Institutions: | 1Swedish University of Agricultural Sciences, Department of Soil Science, Uppsala. Suecia 2Swedish University of Agricultural Sciences, Department of Animal Nutrition and Management, Uppsala. Suecia |
| Year: | 2006 |
| Season: | Ago |
| Volumen: | 6 |
| Number: | 2 |
| Pages: | 177-187 |
| Country: | México |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental |
| Spanish abstract | La produccion de tubérculos disminuye 11, 48 y 72% en la variedad local y 7, 47 y 71% en la variedad mejorada, cuando se realizaron 1, 2 o 3 cosechas de follaje, respectivamente |
| English abstract | The effect of type of fertiliser and harvest frequency on foliage and tuber yield of cassava was studied in two experiments in Laos. In experiment 1 one local and one improved cassava variety were tested with four different fertilisers, control (no fertiliser), intercropped legume, chicken manure and urea. The foliages were harvested three times during the experimental period. Dry matter (DM) yields were recorded and chemical composition of the foliage analysed. Fertilisers significantly influenced DM yield and crude protein (CP) content in foliages of both cassava varieties. Mean total DM foliage yields of the local variety were 2.6, 3.6, 4.1, and 3.8 tons ha-1 for the local variety and 2.3, 3.4, 3.7 and 3.7 tons ha-1 for the improved variety for control, inter-cropped legume, chicken manure and urea fertiliser, respectively. CP content in the foliage was similar for the two varieties but significantly higher for the different fertilisers than for the control. The content of cyanide (HCN) and total tannins increased with all types of fertiliser application compared to the control treatment. In experiment 2, the foliage and tuber yields of the same two cassava varieties were tested with three different times of foliage harvest during the experimental period. The fresh and DM tuber yield in the control treatment was 16.7 and 5.8 tons ha-1 and 24.5 and 8.4 tons ha-1 for the local and improved variety, respectively. There was significantly increasing DM yields of foliage up to 4.1 and 3.4 tons ha-1 for the local and improved variety, respectively, when the foliage was harvested 3 times during the growing period. While increased harvesting frequency increased the total foliage yield the effect on the tuber yields was negative. The tuber yield of the local variety was reduced by 11, 48 and 72% and the improved variety by 7, 47 and 71% at 1, 2 or 3 foliage harvests, respectively |
| Disciplines: | Medicina veterinaria y zootecnia, Agrociencias |
| Keyword: | Nutrición animal, Fertilización, Manihot esculenta, Yuca, Rendimiento, Composición química, Forraje, Variedades |
| Keyword: | Veterinary medicine and animal husbandry, Agricultural sciences, Animal nutrition, Fertilization, Manihot esculenta, Cassava, Yield, Chemical composition, Feedstuff, Cultivars |
| Full text: | Texto completo (Ver PDF) |
