This study investigated water use efficiency and yield in corn (SC 704) irrigated with drip (tape) and furrow irrigation systems in Ghazvin, Iran, in 2006. Four levels of irrigation including: 80, 100 and 120% of water requirement with drip irrigation (tape) and 100% water requirement with furrow irrigation as main plots and method of planting (one and two rows), as well as three levels of crop density including: 75 000, 90 000 and 105 000 (plants ha−1) as subplots were considered. The highest average grain yield was 12.9 t ha−1 while the treatment was drip irrigation at level of 120% water requirement in a two-row planting pattern and crop density equal to 75 000 plants ha−1 (I3R2D1 treatment). The highest water use efficiency (WUE) was obtained in I3R2D1 treatment as 1.96 kg m−3, while the lowest was found in drip irrigation at a level of 80% water requirement in a two-row planting pattern and crop density equal to 75 000 plants ha−1 (I1R2D1 treatment) as 0.82 kg m−3. Variance analysis of the grain yield data indicated that both planting pattern and interaction of planting pattern and crop density significantly affected the yields. Generally, the planting of one row resulted in significantly higher grain yields than the other planting pattern. Copyright © 2010 John Wiley & Sons, Ltd.
Cette etude s'est penchee sur l'utilisation rationnelle de l'eau et le rendement dans le mais (SC 704) irrigues avec goutte a goutte (bande magnetique) et des systemes d'irrigation par rigoles a Ghazvin en Iran en 2006. Quatre niveaux d'irrigation, notamment: 80, 100 et 120% des besoins d'eau avec l'irrigation au goutte a goutte (ruban) et 100% avec un besoin en eau d'irrigation des parcelles comme sillon principal et la methode de plantation (une et deux lignes), outre trois niveaux de densite de peuplement, y compris: 75 000, 90 000 et 105 000 (plantes ha−1) en tant que sous-parcelles ont ete considerees. Le plus haut rendement en grain moyen etait de 12.9 t ha−1 alors que le traitement a ete l'irrigation au goutte a goutte au niveau des besoins en eau de 120% en deux lignes de plantation de modele et de la densite des cultures egal a 75 000 plants ha−1 (traitement I3R2D1). Les plus fortes efficacite de l'utilisation de l'eau (EUE) a ete obtenu dans le traitement I3R2D1 que 1.96 kg m−3 alors que le plus faible a ete constate dans l'irrigation au goutte a goutte au niveau des besoins en eau de 80% en deux lignes de plantation de modele et de la densite des cultures egal a 75 000 plantes ha−1 (I1R2D1 traitement) 0.82 kg m−3. Analyse de la variation des donnees de rendement en grain indique que les deux modeles de plantation et de l'interaction de la plantation de modele et de la densite des cultures sensiblement affecte les rendements. En regle generale, la plantation d'une rangee a donne des rendements significativement plus eleves du grain que dans le schema de plantation autres. Copyright © 2010 John Wiley & Sons, Ltd.
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