caa a22 4500 445837896 CHVBK 20180317145335.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s00271-010-0250-4 doi (NATIONALLICENCE)springer-10.1007/s00271-010-0250-4 Nitrogen balance and irrigation water productivity for corn, sorghum and durum wheat under direct seeding into mulch when compared with conventional tillage in the southeastern France [Elektronische Daten] [M. Khaledian, J. Mailhol, P. Ruelle, I. Mubarak, F. Maraux] Direct seeding into mulch (DSM) reduces soil evaporation. Therefore, DSM can decrease the crop water demand. Furthermore, DSM provides a favorable food source for soil microorganisms that can enhance the degradation of organic matter and improve nitrogen (N) availability for crops. Nowadays, a major challenge in irrigation is to increase irrigation water productivity (WP). This study assessed the impact of DSM on the N balance and WP according to experimental results compared with conventional tillage (CT). The results showed that DSM could mitigate N losses and improve WP for corn and sorghum. Because of field experimental limitations, PILOTE, an operational model, was employed to test the hypothesis that DSM can be more efficient in water use. PILOTE was adapted and then calibrated and validated in the same experimental station. Taking into account the cover crop season, the model simulated the irrigation amount for a corn crop with a target yield of 14 t/ha during the long climatic series of 1991-2007. The results showed a WP increase from 77 with CT to 102kg/mm with DSM. DSM can improve WP and save a water application depth of 40mm compared to CT, which is interesting in a context with water scarcity. Springer-Verlag, 2010 Khaledian M. UMR G-EAU Cemagref, BP 5095, 34196, Montpellier Cedex 05, France aut Mailhol J. UMR G-EAU Cemagref, BP 5095, 34196, Montpellier Cedex 05, France aut Ruelle P. UMR G-EAU Cemagref, BP 5095, 34196, Montpellier Cedex 05, France aut Mubarak I. UMR G-EAU Cemagref, BP 5095, 34196, Montpellier Cedex 05, France aut Maraux F. CIRAD, UR Systèmes de Culture Annuels, BP 5035, 34398, Montpellier Cedex 5, France aut Irrigation Science Springer-Verlag 29/5(2011-09-01), 413-422 0342-7188 29:5<413 2011 29 271 https://doi.org/10.1007/s00271-010-0250-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00271-010-0250-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Khaledian M. UMR G-EAU Cemagref, BP 5095, 34196, Montpellier Cedex 05, France aut NATIONALLICENCE 700 1- Mailhol J. UMR G-EAU Cemagref, BP 5095, 34196, Montpellier Cedex 05, France aut NATIONALLICENCE 700 1- Ruelle P. UMR G-EAU Cemagref, BP 5095, 34196, Montpellier Cedex 05, France aut NATIONALLICENCE 700 1- Mubarak I. UMR G-EAU Cemagref, BP 5095, 34196, Montpellier Cedex 05, France aut NATIONALLICENCE 700 1- Maraux F. CIRAD, UR Systèmes de Culture Annuels, BP 5035, 34398, Montpellier Cedex 5, France aut NATIONALLICENCE 773 0- Irrigation Science Springer-Verlag 29/5(2011-09-01), 413-422 0342-7188 29:5<413 2011 29 271 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer