Response of Corn to Acidity Factors in Eight Tropical Soils
Título en español.
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| dc.date | 1974-01-01 | |
| dc.date.accessioned | 2022-11-04T15:33:03Z | |
| dc.date.available | 2022-11-04T15:33:03Z | |
| dc.identifier | https://revistas.upr.edu/index.php/jaupr/article/view/10703 | |
| dc.identifier | 10.46429/jaupr.v58i1.10703 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/5124134 | |
| dc.description | The effect of soil acidity factors was determined on yields and foliar composition of corn grown on Ultisols and Oxisols typical of the Humid Tropics. Soil pH values increased from about 3.8 with a base saturation of around 20 percent to about pH 5 with a base saturation of around 70 percent based on cation exchange capacities determined with neutral ammonium acetate. The low pH values in relation to exchangeable base contents are explained by the presence of free salts. The level of aluminum saturation of the soil based on exchange capacities as determined with ammonium acetate decreased from 40-percent at about pH 3.9 to 0 at about pH 5.2. The Ultisols had a high content of exchangeable aluminum when acid but the more weathered Oxisols contained little aluminum. A very close relationship exists between exchangeable base (Ca + Mg) and aluminum values based on total exchange capacities determined either with ammonium acetate at pH 7.0 or by the sum of cations at a given pH permitting conversion of one value to another. Corn responded strongly to liming particularly on the Ultisols which had high exchangeable aluminum content when acid. Calcium content of the corn leaves increased with soil base content and with yields but foliar composition was not otherwise affected by liming. Corn yields increased with pH to about 5.2 at which pH level these soils contained essentially no exchangeable aluminum, with exchangeable base content as determined with ammonium acetate to about the 70-percent saturation level, and with decreasing exchangeable aluminum in the soil to essentially 0. Soil pH, exchangeable base, and exchangeable aluminum content were effective criteria for liming these soils. | en-US |
| dc.description | Se determinó el efecto de distintos factores asociados con la acidez enUltisols y un Oxisol típicos de extensas regiones de los Trópicos Húmedos,en la producción y composición foliar de las habichuelas. Las habichuelas respondieron al encalado en experimentos de campo realizados en seis suelos. El contenido de calcio en las hojas de las habichuelas aumentó y su contenido de manganeso disminuyó con el nivel de cal y la producción de habichuelas. La producción de habichuelas aumentó con el pH hasta aproximadamente5.2, a cuyo nivel esto suelos apenas contenían aluminio intercambiable.La producción de habichuelas aumentó con el contenido de bases intercambiables hasta alcanzar un 70 por ciento de saturación basado en lacapacidad total de cambio, determinado ésta con acetato amónico a pH 7.0. La producción de habichuelas aumentó según disminuyó el aluminiointercambiable en el suelo, lográndose la mayor producción cuando el valorde aquél fue approximadamente 0.El pH y el contenido de bases y de aluminio intercambiables en el sueloconstituyeron criterios adecuados para determinar la necesidad de encalar estos suelos, típicos de regiones extensas en los Trópicos Húmedos para la producción de habichuelas. | 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/10703/17624 | |
| dc.rights | Derechos de autor 2017 Journal of Agriculture of the University of Puerto Rico. (Etapa III) | es-ES |
| dc.source | The Journal of Agriculture of the University of Puerto Rico; Vol. 58 No. 1 (1974): Vol. 58, No. 1, January 1974; 59-77 | en-US |
| dc.source | Journal of Agriculture of the University of Puerto Rico; Vol. 58 Núm. 1 (1974): Vol. 58, No. 1, January 1974; 59-77 | es-ES |
| dc.source | 2308-1759 | |
| dc.source | 0041-994X | |
| dc.source | 10.46429/jaupr.v58i1 | |
| dc.subject | Soils--Tropics--Analysis | en-US |
| dc.subject | Soils--Puerto Rico--Analysis | en-US |
| dc.subject | Corn--Effect of soil acidity on | en-US |
| dc.subject | Soil pollution | en-US |
| dc.title | Response of Corn to Acidity Factors in Eight Tropical Soils | en-US |
| dc.title | Título en español. | es-ES |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion |