Nitrate leaching and the resulting groundwater contamination from intensive crop production has become a major concern for long-term farmland efficiency and environmental sustainability in Italy. The aim of this study was to evaluate a water-saving NH4-charged zeolitite (produced by a new prototype) for minimizing NO3-leaching from soil and optimizing corn growth and yield. Forty-eight zeolitite:soil lysimeters in two trials were installed in a greenhouse to study the growth and yield characteristics of maize (Zea mays) as well as the nitrate concentration in leachate under different fertilizing conditions (i.e., standard, high or 70%, medium or 50% and low or 30% of conventional fertilization rate) and NH4-charged zeolitite (control, 0; dose-1, 50 t ha−1 and dose-2, 100 t ha−1) treatments. The results implicitly suggest that plants may have a better response if NH4-charged zeolitite is usedwith a limited amount of conventional fertilizer, allowing a reduction of nitrate concentration in drainage.

Ammonium-charged zeolitite effects on crop growth and nutrient leaching: greenhouse experiments on maize (Zea mays)

FACCINI, Barbara;COLTORTI, Massimo;
2016

Abstract

Nitrate leaching and the resulting groundwater contamination from intensive crop production has become a major concern for long-term farmland efficiency and environmental sustainability in Italy. The aim of this study was to evaluate a water-saving NH4-charged zeolitite (produced by a new prototype) for minimizing NO3-leaching from soil and optimizing corn growth and yield. Forty-eight zeolitite:soil lysimeters in two trials were installed in a greenhouse to study the growth and yield characteristics of maize (Zea mays) as well as the nitrate concentration in leachate under different fertilizing conditions (i.e., standard, high or 70%, medium or 50% and low or 30% of conventional fertilization rate) and NH4-charged zeolitite (control, 0; dose-1, 50 t ha−1 and dose-2, 100 t ha−1) treatments. The results implicitly suggest that plants may have a better response if NH4-charged zeolitite is usedwith a limited amount of conventional fertilizer, allowing a reduction of nitrate concentration in drainage.
2016
Campisi, T.; Abbondanzi, F.; Faccini, Barbara; DI GIUSEPPE, Dario; Malferrari, D.; Coltorti, Massimo; Laurora, A.; Passaglia, E.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2336530
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