Nitrogen-sulfur relationships in wheat (Triticum aestivum L.), corn (Zea mays), and beans (Phaseolus vulgaris)
Material type: ArticleLanguage: English Description: 61(2):267-271Subject(s): LOC classification:- 2811
Item type | Current library | Collection | Call number | Copy number | Status | Date due | Barcode | Item holds | |
---|---|---|---|---|---|---|---|---|---|
Journal Article | CIAT Library Document collection CINFOS | Document Collection CINFOS | 2811 (Browse shelf(Opens below)) | c.1 | Short Loan | 100030265 |
Se estudiaron las relaciones N/S en partes aereas y raices de trigo (Triticum aestivum), maiz (Zea mays) y frijol (Phaseolus vulgaris) con relacion a la disponibilidad de N y S en el suelo. Los estudiso de invernadero mostraron que cuando S es limitante, la adicion de N no afecto el rendimiento ni el nivel proteinico de las plantas, pero aumento el N no proteico (nitratos, amidas y aminoacidos). Se observo una relacion cercana entre las cantidades de N y S metabolizadas en las plantas. Los datos indicaron que se requeria 1 parte de S por cada 12-15 partes de N para asegurar maxima produccion de materia seca y proteina. A medida que aumenta la utilizacion de fertilizantes nitrogenados, tambien aumenta la posibilidad de que S se torne limitante y, en consecuencia, se vuelve necesario prestar la debida atencion a la limitacion de S. Esto es de especial importancia en estudios de invernadero, donde el S se puede volver limitante muy rapidamente. (RA-CIAT) spa
The N/S ratios in the tops and roots of wheat (Triticum sativum), maize (Zea mays) and beans (Phaseolus vulgaris) were studied in relation to N and S supplies in soil. Greenhouse studies showed that when S became limiting, additional N did not affect either the yield or protein level of the plants, but the nonprotein N (nitrates, amides and amino acids) increased. There was a close relationship between the amounts of N and S metabolized in the plants. The data indicated that one part S was required for every 12-15 parts N to insure maximum production of both, dry matter and protein. As the use of N fertilizers increases, the possibility that S may become limiting also increases, and adequate consideration of S becomes necessary. This is especially true in greenhouse studies, where S may become limiting very quickly. (AS) eng