[Response of Lolium perenne to two phosphate rocks with three particle sizes plus sulfur or zeolite in an andosol] | Respuesta de Lolium perenne a dos rocas fosforicas con tres tamanos de particula adicionadas de azufre o zeolita en un andosol
1996
Gracia de Leon, Ruben G. de | Nunez Escobar, Roberto | Etchevers Barra, Jorge D. | Bell, Mark
English. With the purpose of improving their solubility, the phosphate rocks were subjected to a finer grinding and the addition of sulphur or zeolite were also tested. Rated of 0, 91 and 182 mg kg sup-1 of P as Baja California phosphate rock (BCPR)or North Carolina phosphate rock (NCPR), were intermediate and fine alone or mixed with elemental sulphur (S) or zeolite, using triple superphosphate (TSP) as the reference fertilizer, regarding their effect on dry matter yield (DM) and P extractio by a Lolium perenne crop, in an andosol of Michoacan, Mexico. Coarse BCPR plus S w as a effective as coarse NCPR on DM yields or P extractions; this result it advantagenous for the Mexican rock (BCPR) due to ils lower coast
Show more [+] Less [-]Spanish; Castilian. Para mejorar la solubilidad de 2 rocas fosforicas se evaluo en molienda fina, y con adicion de azufre o zeolita. Se compararon dosis de 0, 91 y 182 mg kgsup-1 de fosforo como roca fosforica de Baja California (RFBC) en 3 tamanos de particula, solas o adicionadas con azufre o zeolita, utilizando al superfosfato triple (SFT) como fertilizante de referencia, en cuanto a la produccion de materia seca (MS) y extraccion de P por Lolium perenne L., en un Andosol de Michoacan, Mexico. Las aplicaciones de RFBC gruesa mas azufre o RFCN gruesa resultaron en similares producciones de MS y extraccion de P, lo cual resulta ventajoso para la roca fosforica nacional (RFBC) por su menor costo
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