Yam (Dioscorea spp.) response to fertilization in soils of the semiarid southern coast of Puerto Rico
Respuesta del ñame (Dioscorea spp.) a la fertilización en suelos de la costa semiárida del sur de Puerto Rico
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| dc.date | 2003-10-01 | |
| dc.date.accessioned | 2022-11-04T15:27:33Z | |
| dc.date.available | 2022-11-04T15:27:33Z | |
| dc.identifier | https://revistas.upr.edu/index.php/jaupr/article/view/1101 | |
| dc.identifier | 10.46429/jaupr.v87i3-4.1101 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/5122370 | |
| dc.description | Yam (Dioscorea spp.) production in Puerto Rico is located in the central mountainous zone, but there is interest in expanding production to the southern semi-arid zone, where mechanization is possible, where irrigation is available and where soil pH is neutral or alkaline. Two experiments were performed during 2000 (Experiment I) and 2001 (Experiment II) in a soil corresponding to the Pozo Blanco (Fine-loamy, mixed, superactive, isohypertermic Aridic Calciustolls) series with high exchangeable potassium and magnesium contents and with a good capacity to supply nitrogen. Yam (D. alata cv. Diamante and D. rotundata cv. Guinea Negro) response to the application of nitrogen, potassium, magnesium and micronutrients was evaluated. In Experiment I, yam (cv. Diamante) yields were severely affected by an uncharacterized tuber-root rot, and marketable production varied from 5,961 to 10,742 kg/ha. In Experiment II, the disease incidence was less than in Experiment I.The application of micronutrients increased yields by as much as 100%. There was a trend for greater marketable tuber production with the application of micronutrients and 75-12-250 kg/ha (N-P-K) for cv. Diamante (18,787 kg/ha), and for cv. Guinea Negro (10,492 kg/ha), with the application of micronutrients and 75-12-0 kg/ha (N-P-K). The results suggest that with good seed-quality, micronutrient foliar applications, and moderate application rates of nitrogen and potassium, adequate yam production can be achieved in these soils. | en-US |
| dc.description | La producción de ñame (Dioscorea spp.) en Puerto Rico se sitúa principalmente en la zona central montañosa, pero hay interés en expandir la producción a la región semiárida del sur, donde los suelos son mecanizables, tienden a ser neutrales o calcáreos, y donde hay riego disponible. Se realizaron dos ensayos de campo durante los años 2000 y 2001 en un suelo de la serie Pozo Blanco (Fino lómico, carbonático, isohipertérmico Typic Haplustolls) con alto contenido de potasio y magnesio intercambiable y con buena capacidad de suplir nitrógeno. Se evaluó la respuesta de los cultivares Diamante (D. alata), y Guinea Negro (D. rotundata) a la aplicación de nitrógeno, potasio, magnesio, y micronutrimentos. En el 2000, el rendimiento del cultivar Diamante se afectó severamente debido a una pudrición del tubérculo y la producción mercadeable varió de 5,961 a 10,742 kg/ha. En el 2001, hubo menor incidencia de la pudrición que en el 2000. La aplicación de micronutrimentos aumentó el rendimiento más de 100% para los dos cultivares. Hubo una tendencia a una mayor producción de tubérculos mercadeables con la aplicación de micronutrimentos y 75-12-250 kg/ha (N-P-K) en el cultivar Diamante (18,787 kg/ha), y con la aplicación de micronutrimentos y 75-12-0 kg/ha (N-P-K) en el cultivar Guinea Negro (10,492 kg/ha). Los resultados sugieren que con buena calidad y manejo de semilla, aplicaciones foliares de micronutrimentos, y cantidades moderadas de nitrógeno y potasio se puede producir ñame en suelos como éstos. | es-ES |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.publisher | University of Puerto Rico Mayagüez Campus Agricultural Experiment Station | en-US |
| dc.relation | https://revistas.upr.edu/index.php/jaupr/article/view/1101/981 | |
| dc.rights | Derechos de autor 2016 The Journal of Agriculture of the University of Puerto Rico | es-ES |
| dc.source | The Journal of Agriculture of the University of Puerto Rico; Vol. 87 No. 3-4 (2003): Vol. 87, No. 3-4, July - October 2003; 91-103 | en-US |
| dc.source | Journal of Agriculture of the University of Puerto Rico; Vol. 87 Núm. 3-4 (2003): Vol. 87, No. 3-4, July - October 2003; 91-103 | es-ES |
| dc.source | 2308-1759 | |
| dc.source | 0041-994X | |
| dc.source | 10.46429/jaupr.v87i3-4 | |
| dc.subject | Dioscorea spp. | en-US |
| dc.subject | Fertilization | en-US |
| dc.subject | Calcareous soils | en-US |
| dc.subject | Micronutrients | en-US |
| dc.subject | Yams--Fertilizers | en-US |
| dc.subject | Yams--Puerto Rico--Southern Coast | en-US |
| dc.subject | Nitrogen fertilizers | en-US |
| dc.subject | Potassium fertilizers | en-US |
| dc.subject | Soil biochemistry | en-US |
| dc.title | Yam (Dioscorea spp.) response to fertilization in soils of the semiarid southern coast of Puerto Rico | en-US |
| dc.title | Respuesta del ñame (Dioscorea spp.) a la fertilización en suelos de la costa semiárida del sur de Puerto Rico | es-ES |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion |