Effect of irrigation water quality and Zinc foliar spraying on flowering growth parameters and productivity in wheat

Abstract

This experiment was conducted on wheat plant ev. Ipa 95 from the period of 3/12/2004 until 6/5/2005 on Kufa region , Najaf . The aim was to study the effect of watering with different salinity water (river water E.C.=3.3 mlmo.cm−1, mixture water consist of water river and drainage water at aratio of 1:1 , and drainage water E.C.=6.55 mlmo.cm−1) and Zinc spraing as ZnSO4.7H2O at conc. of 2 and 4 g/l . Besides control treatment that was water sprayed on wheat seedlings at two intervals 65 and 95 days old . The interaction between the two factors were also studied on flowering parameters (i.e. spike length , numbers of total flowers , sterile flowers , total seeds , spike dry weight ) ; numbers of fruiting tillers , non - fruiting tillers the weight of 1000 grain and productivity per unit area . It could be concluded that :1- Flowering growth parameters and productivity were reduced in plant that grown with drainage water for all parameters . The productivity was reduced from 904.5 kg/D when plants watered with river water to 496.4 kg/D when plants watered with drainage water .2- Zinc spraying significantly affected the growth of flowering parameters and productivity characteristics . Productivity reduced from 820.0 kg/D . When plants were sprayed with zinc at 4 g/l. conc. to 584.6 kg/D . with control treatment .3- Watering wheat plant with drainag water with out zinc spraying had anegative effect on flowering parameters and productivity that reached (438.2 kg/D.) . Meanwhile , watering plants with drainage water with zinc spraying resulted in an important in studied characteristics , Productivity increased to 513.5 kg/D. with 4g/l. conc. compared with control treatment .