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THE IMPACTS OF IRRIGATION WATER SALINITY AND DEFICIT IRRIGATION ON SUNFLOWER | ||
| IRAQ JOURNAL OF AGRICULTURE | ||
| Article 1, Volume 19, Issue 3, 2014, Pages 0-0 | ||
| Authors | ||
| H.H. Hussien; M. I. Aoda; A.A. Alfalahi | ||
| Abstract | ||
| A field experiment was conducted to study the effects of irrigation water salinity and deficit irrigation on yield of sunflower (Helianthus annuus L.) CV Akmar, for autumn season of 2011 at Zaafaraniya field/ Horticulture Directorate /south of Baghdad. Three levels of irrigation water salinity (river water 1.35 “control”, 4 and 6 dS.m-1) were used and two treatments of irrigation [© complete irrigation “control” when depletion of 50-60% of available water, and deficit irrigation (Cutting two non consecutive irrigations) during stages of vegetative growth (V), flowering (F) and maturity (M)]. Nested Block design was used for this experiment with three replicates. Drip irrigation was used to irrigate all treatments. Separate plastic water tank was used as a container for each source of saline water. Weight of 500 seed and seeds yield decreased significantly with increase of the salinity of irrigation water, while the effect of deficit irrigation and the interactions between the salinity of irrigation water and deficit irrigation weren’t significant. Increasing the salinity of irrigation water to (6 ds.m-1) tended to decrease the weight of 500 seeds and yield significantly, but these two parameters were decreased in small percent when irrigated with saline water of 4 ds.m-1. Saving percent in irrigation water used when applied deficit irrigation reached to 8.5, 13.8, and 17.8% at the stages of vegetative growth, flowering and maturity when compared with complete irrigation, respectively. | ||
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