University of Tehran Press Iranian Journal of Soil and Water Research 2008-479X 44 4 2013 12 22 Investigation of the Effects of Drought Stress on Top and Root Weight of Corn at Different Growth Stages Investigation of the Effects of Drought Stress on Top and Root Weight of Corn at Different Growth Stages 339 346 50406 10.22059/ijswr.2013.50406 FA Mehdi Gheysari Assistant Professor, Water Engineering Department, Agriculture College, Isfahan University of Technology, Isfahan, Iran Mohammad Mahdi Majidi Associated Professor, Agronomy Department, Agriculture College, Isfahan University of Technology, Isfahan, Iran Mohammad Javad Zareian PhD Student, Water Engineering Department, Agriculture College, Isfahan University of Technology, Isfahan, Iran Seyed Majid Mirlatifi Associated Professor, Irrigation a Drainage Department, Agriculture College, Tarbiat Modares University, Tehran, Iran 0000-0002-3828-5625 Hamzeh Dokoohaki Former MSc Student, Water Engineering Department, Agriculture College, Isfahan University of Technology, Isfahan, Iran Somayeh Amiri Former BSc Student, Water Engineering Department, Agriculture College, Isfahan University of Technology, Isfahan, Iran Journal Article 2013 07 10 This study was conducted to investigate the effects of applying deficit irrigation on aboveground biomass, leaf area and root biomass for maize Hybrid 704 single-cross. Experimental treatments included 4 different irrigation levels, 5 growth stages with three replicates in a completely randomized factorial statistical design. Aboveground biomass, leaf area and root biomass in 4 longitudinal sections of root length were measured at different growth stages. Results indicated that different irrigation levels had significant effect on aboveground biomass, leaf area, root biomass of sectional root lengths and total root biomass (P<0.05). The maximum aboveground biomass, leaf area and total root biomass were observed at milk stage in both years. These values were 318.9 and 465.1gr for aboveground biomass, 6497 and 6533cm² for leaf area and 32.3 and 36.6gr for total root biomass in 2009 and 2010, respectively. The optimum level of water stress with maximum root biomass for maize can provide useful information for scholars and engineers to increase irrigation water use efficiency under deficit irrigation management. This study was conducted to investigate the effects of applying deficit irrigation on aboveground biomass, leaf area and root biomass for maize Hybrid 704 single-cross. Experimental treatments included 4 different irrigation levels, 5 growth stages with three replicates in a completely randomized factorial statistical design. Aboveground biomass, leaf area and root biomass in 4 longitudinal sections of root length were measured at different growth stages. Results indicated that different irrigation levels had significant effect on aboveground biomass, leaf area, root biomass of sectional root lengths and total root biomass (P<0.05). The maximum aboveground biomass, leaf area and total root biomass were observed at milk stage in both years. These values were 318.9 and 465.1gr for aboveground biomass, 6497 and 6533cm² for leaf area and 32.3 and 36.6gr for total root biomass in 2009 and 2010, respectively. The optimum level of water stress with maximum root biomass for maize can provide useful information for scholars and engineers to increase irrigation water use efficiency under deficit irrigation management. https://ijswr.ut.ac.ir/article_50406_e440113dde9d989caff2c0f405ad1334.pdf