Uso de clinoptilolita como un vehículo de fertilizantes nitrogenados en un suelo de la región Pampeana de Argentina

Abstract

The properties of clinoptilolite related to cationic exchange and ionic selectivity have motivated us to study its application for agronomic purposes. The high potential of the clinoptilolite has been demonstrated as a vehicle for nitrogen fertilizers, with the aims of decreasing negative impacts on the environment and increasing fertilizer effi ciency. The objective of this study was to evaluate the effects of an exchanged form, clinoptilolite-NH 4 , and an occluded form, clinoptilolite-urea, of nitrogen fertilizer relative to commercial urea on dry matter and the nitrogen uptake effi ciency of Lolium multifl orum under controlled conditions. Lolium multifl orum, sowed in a sandy loam soil, was fertilized with 0, 60, 120, and 180 kg·ha -1 of nitrogen. Yield increased considerably and nitrogen uptake effi ciency was enhanced when clinoptilolite-NH 4 was used, possibly due to its ability to retain and slowly liberate NH 4 + ions. This effect produces time differences in nitrogen disponibility in relation to urea, making the nitrogen available for a longer time for the plant. The clinoptilolite-urea treatments reduced yields signifi cantly in comparison with urea applications only at the lowest dose. In addition, the nitrogen uptake effi ciency was always lower than the other treatments. This behavior is related to the fact that nitrogen liberation dynamics of the occluded form are much slower than for the ionic one.

Preparation, Characterization and Evaluation of Efficacy of Phosphorus and Potassium Incorporated Nano Fertilizer

“…Zeolites have a high cation exchange capacity and often used as inexpensive cation exchanger [17] [18]. It may be the reason of increasing CEC of soils which is treated with nano fertilizer than the other.…”

Application Of Nanotechnology In Agriculture And Food Industry, Its Prospects And Risks

“…The clinoptilolite was found to have high potential as a vehicle for nitrogen fertilizers because it can decrease negative impacts on the environment and increase fertilizer efficiency. Application of clinoptilolite-NH 4 resulted in a considerable increase of Lolium multiflorum yield and enhanced nitrogen uptake efficiency, possibly due to its ability to retain and slowly liberate NH 4 ions [253]. Also surfactant-modified zeolite was found to be a good sorbent for nitrate [254] as well as for phosphate [255], providing slow release of nitrate or phosphorus.…”

Eficiencia de la zeolita como aditivo de la urea e inoculación micorrizica en el cultivo de trigo

“…En este contexto, la zeolita y la micorriza, son una alternativa de solución para el uso eficiente del fertilizante nitrogenado y la absorción de nutrientes de poca movilidad en el suelo como es el fósforo (P). Ambos, son productos de uso universal muy relacionados con las nuevas tendencias de aplicación de tecnologías ambientales limpias y de mejoramiento de la calidad de vida (Flores et al, 2003;Cárdenas et al, 2004;Millán et al, 2008;Ahmed et al, 2009).…”

“…Su aplicación incide en la reducción de las pérdidas de N en los suelos agrícolas, lo cual incrementa el aprovechamiento de este elemento por los cultivos (John et al, 1998). Debido a estas características, las mezclas de zeolita con los fertilizantes nitrogenados, es una alternativa de solución, su síntesis tiene por objeto reunir en un solo producto las ventajas de los materiales que les dan origen; es decir, lograr una concentración nutrimental suficientemente elevada y balanceada, con una liberación lenta de nutrimentos, lo que prolonga su efecto residual y permite a la planta absorberlos a un ritmo más acorde con su requerimiento fisiológico (Flores et al, 2007;Millán et al, 2008).…”

“…La asociación simbiótica entre el endófito y la planta, actúa como un complemento de la raíz de la planta en la toma de nutrientes, especialmente en la absorción de fósforo, aumento de la tolerancia a condiciones de estrés abiótico, improvement of the quality of human life. (Flores et al, 2003;Cárdenas et al, 2004;Millán et al, 2008;Ahmed et al, 2009).…”