The effect of rotation and nitrogen fertilizer on yield and nitrogen, potasium and phosphorus concentrations in wheat
Subject Areas :
Shahram
Shoaei
1
(Scientific Board of Islamic Azad University, Ashtiyan Branch.)
folora
rafiei
2
(Ph.D. Student of Agricultural Plant Physiology, Islamic Azad University of Tehran, Science and Research Branch.)
ali
kashani
3
(Professor of University of Shahid Chamran, Ahvaz, Iran.)
Keywords: nitrogen, yield, Wheat, Rotation, Nutrient concentration,
Abstract :
In order to investigate the effect of rotation and two nitrogen fertilizer rates on yield and some agronomic characteristics of Chamran wheat cultivar, an experiment was conducted as factorial based on randomized complete block design with four replications in experimental field of agriculture faculty of Ahvaz Shahid Chamran University in 2002. Rotation treatments including wheat-wheat, corn-wheat, sudangrass-wheat, mixed forage-wheat, suger­beet-wheat and sudangrass-rape seed-wheat and nitrogen fertilizer requirement for producing 5 and 7 tons per hectare were considered as experimental factors. The results revealed significant effect of rotation and nitrogen levels on grain and stubble protein yield. The hieghest grain yield was obtained from sugeer­beet-wheat and corn-wheat rotations in nitrogen level for 7 ton per hectare grain production .Nitrogen, phosphorus and potasium uptake amounts had no significant variation under rotation in all treatments. Nitrogen and phosphorus uptake amounts were lower than optimum and potasium uptake amount was optimum in Ahvaz climate condition.
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