M.A. Thesis:

The effect of biological fertilizer on allivation of salinity in sunflower ( Helianthus annuus L)

Salinity is one of the most important biological stress which affected about 1.2% of Iranian land. In order to study the effect of biological fertilizer on alleviation of salinity stress in sunflower an experiment was conducted as split plot design based on complete randomized block design with three replication at private form close 10km of sabzevar in 2014-2015. Factors were type of biological fertilizer (Kalferit and Saltrit) as main plot and amount of fertilizer (0, 50, 100, 150 and 200 kg/ha) as sub plot. The result showed that No. of achenes head-1 , 1000-achene weight, biological yield and seed yield were affected by type of biological fertilized which Kalferit was better than Salterit. Increasing fertilizer amount from 0 to 200 kg/ha-1 increased plant height (7.20%), head diameter (23.03%), No. of achenes head-1(38.32%) , 1000-achene weight (31.82%), biological yield 48.48%) and economic yield (41.03%) which hadn’t significant different with 150 kg.ha-1. Overall. The result indicated that application of 150 kg.ha-1 biological fertilizer as Kalferit form could recommended for the maximum seed yield in Sunflower.

Keywords: Biological fertilizer, Sunflower, Salinity, Yield