European Academic Research ISSN 2286-4822
ISSN-L 2286-4822
Impact Factor: 3.4546 (UIF)
DRJI Value : 5.9 (B+)
Article Details :
Article Name :
Effect of Foliar- Applied potassium Fertilizer on Sunflower Water use efficiency under deficit irrigation Concept
Author Name :
ADNAN SHBAR FALIH HUSAMULDEEN AHMED TAWFEEQ SADEQ J. H. DWENEE IBRAHIM B. RAZAQ
Publisher :
Bridge Center
Article URL :
Abstract :
Field experiment was conducted as randomized complete block design (RCBD) during the spring season 2015 at soil and water Resources center (Baghdad). The main objective was to evaluate enhancing sunflower water use efficiency using deficit irrigation practice with and without foliar- application of potassium. Treatments were two level of deficit irrigation namely, 20% and 40% of full applied irrigation water, without potassium fertilizer application and with potassium foliar application 20, 35 and 50 days after germination. Amount of soil water content to depth 0-0.3m was determined by using Diviner – 2000 sensor. Deficit irrigation practices of 20% and 40% reduction from applied irrigation water to full irrigation caused decreasing in irrigation water amount with 1180 and 2320 m3. ha1season-1 respectively as compared with full irrigation treatment (6180 m3. ha-1season-1). Water use efficiency was not affected significantly by using 20 and 40 % reducin in applied water. On the other hand, WUEf and WUEc. were increased significantly in each spraying treatments, when compared with the treatments before it was (0.61, 0.63 Kg. ha-1) at first spray and (0.66, 0.69 Kg.ha-1) in second spray, 0.70 and 0.73 Kg. ha-1 in third spray. While control treatment were 0.41and 0.40 kg. ha-1. Deficit irrigation treatments have significant effected on oil content percent and seed yield. Reducing 20% from applied irrigation water caused increased in oil content percent and seed yield with 4.5% and 12.6% respectively as compared to reduction 40% from applied irrigation water. The foliar spraying of potassium fertilizer effected positively with significant differences in oil content percent and seed yield. Oil content percent was increased by 12.2%, 20.4% and 26.8% respectively when compared with control, and the other hand the seed yield increased significantly in each spraying treatments when compared with the treatments before it was (2781.0 Kg / ha) at first spray and (3031.5 Kg/ ha) in second spray, (3242 Kg / ha) in third spray. While control treatment was ( 2431/ Kg. ha-1. The results showed that substantial increased in WUE, oil content percent and seed yield under three times foliar spraying potassium fertilized for sunflower.
Keywords :
Sunflower, Diviner-2000, Foliar K, WUE
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