In order to investigate tillage system and fertilization management in improving the quantitative and qualitative traits of corn, a split-plot experiment was laid out in the base of RCBD with four replications in Darrehshahr (Ilam province) during 2016 – 2017. Exp
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In order to investigate tillage system and fertilization management in improving the quantitative and qualitative traits of corn, a split-plot experiment was laid out in the base of RCBD with four replications in Darrehshahr (Ilam province) during 2016 – 2017. Experimental treatments consisted of three levels of tillage [zero-tillage (direct sowing), conservative tillage (using compound and furrower), conventional tillage (Moldboard plow + double discs + pellets furrower)] and nitrogen, phosphorus, potassium (NPK) in three levels [included not use of chemical fertilizer (NPK)0, 50% recommended NPK (NPK)50, 100% recommended NPK (NPK)100]. The results of mean comparisons showed that the highest nitrogen yield per grain (30.15 kg.kg-1) was obtained in conservative tillage which is more than the no-tillage system with the use of (NPK) 100. The highest grain yield (8401 kg.ha-1) was obtained in conservative tillage treatment with use of (NPK)100 while least grain yield (5239 kg ha-1) was obtained in no-tillage with use of (NPK)0. It can be concluded that conservative tillage improves the absorption of elements which has increased the nutrient use efficiency. Conservative tillage against no-tillage system had a positive effect on yield, yield components, and nutrient efficiency while in some traits, this increase was more than a conventional system.
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