Mineral nitrogen fertilization and stover management effects on maize production under irrigated mediterranean conditions. Simulation of yields
| Autor: | Yakoub, Abdul Malek |
|---|---|
| Přispěvatelé: | Lloveras Vilamanyà, Jaume, Lizaso Oñate, Jon I., Universitat de Lleida. Departament de Producció Vegetal i Ciència Forestal |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | TDX (Tesis Doctorals en Xarxa) TDR. Tesis Doctorales en Red instname |
| Popis: | The optimal N application rates were investigated with the effects of stover management on maize production and its possible interaction with N fertilization. A field experiment was conducted from 2010 to 2014. The rates of mineral N fertilization applied were: 0, 100, 200 and 300 kg N ha-1 year-1. Our results suggested that grain yield, biomass, grain and plant N uptake and SPAD-units were all greatly affected by N fertilization rates. Maximum yield values (19.93 and 19.20 Mg ha−1) were achieved with N application rates of 200 kg ha-1. Our results suggested that returning stover to the soil over a period of five years had a positive impact on SOC (soil organic matter) levels, without any yield penalties. We evaluated the performance of the CSM–CERES and CSM-IXIM maize models in their DSSAT to simulate high yielding conditions and we also tested the IXIM model using an alternative approach. |
| Databáze: | OpenAIRE |
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