To evaluate the beneficial impact of biological and chemical fertilizers application on wheat (Triticum aestivum) some yield characters were investigated. Our objective in this study was the interactive effects of biofertilizer (BF) and chemical fertilizer (CF) applications on: quantity yield at Iran in 2006. In this respect, the experimental unit had designed by achieved treatments in factorial on the basis completely randomized block design with four replicates. Certain factors including five levels of fertilizer (100% CF application; 75% CF and 25% BF applications; 50% CF and 50% BF applications; 25% CF and 75% BF applications and 100% BF application respectively) and two wheat cultivars (Omid and Alvand) were studied. Our final statistical analysis was indicated that in the 50% CF and 50% BF applications, yield components were significantly higher. Those such as: biological yield, seed yield, stem dry weight, ear dry weight, awn dry weight, leaf dry weight, plant height, leaf number per main stem and spikelet number per spike were higher in unites by 50% CF and 50% BF applications together cultivated. Although thewheat cultivars treatment significantly increased yield components and harvest index. However highest yield components were produced by Alvand cultivar but highest plant height was obtained by Omid cultivar. Our finding may give applicable advice to farmers for management and concern on fertilizer strategy and carefully estimate chemical fertilizer supply by biofertilizer application.
Key words: Biofertilizer, chemical fertilizer, biological yield, seed yield, harvest index, wheat cultivars
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